Freelancer logo
Log In Sign Up
Post a Project

EXPLORE

CSS HTML5 JavaScript jQuery / Prototype Website Design
Profile cover photo
User Avatar

Sven

@Sv3nie

monthly-level-four.svgverified-v3.svgpreferred-freelancer-v3.svg
5.0
108

6.5

6.5

96%

Blockchain | MERN | AI | Flutter | Games | Design

$50 USD / Hour

・

Flag of INDONESIA

Indonesia (11:59 PM)

・

Joined on August 18, 2019

・

9 Recommendations

Hello, I build end-to-end web applications and blockchain tooling, with a focus on the MERN stack (MongoDB, Express, React, Node.js) and Rust for performance-critical components. I'm also comfortable with TypeScript, Vue 3, Tailwind CSS, and Alpine.js on the frontend, and Flutter/Dart for mobile. My core specialty is DEX and DeFi tooling on Ethereum and Solana — from custom smart contracts to real-time analytics. My flagship project, [login to view URL], is a real-time DEX analytics platform (a DexScreener alternative) built with React, Node.js, MongoDB, and ethers.js, with a Rust-based scraper/aggregator and a MongoDB pipeline tracking per-wallet P&L with Decimal128 precision. I also bring prior professional experience with Python, Golang, and C# (Unity), plus a multimedia design background (2D animation, graphic design, UI/UX) that shows in the interfaces I ship. Let's brainstorm together and bring your vision to life. Contact me today to get started!

Verifications

On time

91%

On budget

98%

Accept rate

78%

Repeat hire rate

17%

Freelancer Website Designers Indonesia
See all Website Designers in Indonesia

Portfolio

Portfolio

14151738
VOIDLING is a 2D arcade climber for the web and Android. Gameplay • Fixed-seed procedural tower: every player climbs the same five zones, and it never ends • A rising Void with surges, checkpoints every ~100 m, revives, and a shop every 100 m • Stomp and dash combat, auto-aimed guns, throwable stones and bombs, power-ups (shield, wings, grapple hook, super jump) • Keyboard, mouse, gamepad and touch controls Visuals • Glossy sprites, squash-and-stretch animation, coded energy effects (lightning, plasma, fire), death animations, parallax depth • A Python art pipeline that cuts every object out of an Illustrator file, recolors licensed vector art to each zone's palette, and measures where characters can stand Tech • Plain JavaScript and HTML5 Canvas, with no game engine and no server • Offline-capable web app (PWA) on GitHub Pages; Android app built with Flutter • All sound is synthesized live in the browser (Web Audio) Play it: https://sv3nskie.github.io/voidling/

Voidling – 2D Arcade Space Climber

VOIDLING is a 2D arcade climber for the web and Android. Gameplay • Fixed-seed procedural tower: every player climbs the same five zones, and it never ends • A rising Void with surges, checkpoints every ~100 m, revives, and a shop every 100 m • Stomp and dash combat, auto-aimed guns, throwable stones and bombs, power-ups (shield, wings, grapple hook, super jump) • Keyboard, mouse, gamepad and touch controls Visuals • Glossy sprites, squash-and-stretch animation, coded energy effects (lightning, plasma, fire), death animations, parallax depth • A Python art pipeline that cuts every object out of an Illustrator file, recolors licensed vector art to each zone's palette, and measures where characters can stand Tech • Plain JavaScript and HTML5 Canvas, with no game engine and no server • Offline-capable web app (PWA) on GitHub Pages; Android app built with Flutter • All sound is synthesized live in the browser (Web Audio) Play it: https://sv3nskie.github.io/voidling/

Voidling – 2D Arcade Space Climber

14142760
A clean, conversion-focused website for Alexx Keukens, a Nijmegen-based company designing and installing German-quality kitchens and custom-made cabinets since 2006. The homepage leads with a strong headline and project photography, explains the 4-step process (showroom visit, design, measuring, installation), and showcases completed work in a clickable lightbox gallery. Includes an FAQ accordion, separate pages for kitchens, cabinets and contact, and multiple appointment calls to action to drive showroom visits. Fully responsive, SEO-friendly and fast. Designed, built and deployed end to end.

Kitchen Company Website – Alexx

A clean, conversion-focused website for Alexx Keukens, a Nijmegen-based company designing and installing German-quality kitchens and custom-made cabinets since 2006. The homepage leads with a strong headline and project photography, explains the 4-step process (showroom visit, design, measuring, installation), and showcases completed work in a clickable lightbox gallery. Includes an FAQ accordion, separate pages for kitchens, cabinets and contact, and multiple appointment calls to action to drive showroom visits. Fully responsive, SEO-friendly and fast. Designed, built and deployed end to end.

Kitchen Company Website – Alexx

14142755
A modern, image-led website for LÓDZ, a designer fashion boutique in Oisterwijk, Netherlands. The site presents the store's seasonal looks and accessories in an editorial, magazine-style layout, with an animated brand gallery, a featured-event banner, and clear calls to action for visiting the store. Built fully responsive and optimized for fast loading with compressed WebP/responsive images. Content is written in Dutch for the local audience, with a separate contact page showing opening hours and directions. Designed, built and deployed end to end.

Fashion Boutique Website – LÓDZ

A modern, image-led website for LÓDZ, a designer fashion boutique in Oisterwijk, Netherlands. The site presents the store's seasonal looks and accessories in an editorial, magazine-style layout, with an animated brand gallery, a featured-event banner, and clear calls to action for visiting the store. Built fully responsive and optimized for fast loading with compressed WebP/responsive images. Content is written in Dutch for the local audience, with a separate contact page showing opening hours and directions. Designed, built and deployed end to end.

Fashion Boutique Website – LÓDZ

14120742
A developer portfolio shipped as a native Android app, built end-to-end in Flutter and published on Google Play. The brief: prove I build apps by handing the visitor one, not a brochure. What I built: • Six case studies (DEX, staking platform, BLE breathalyzer companion, documentation platform and more), each stating the engineering problem, what was built and its current status. • Offline-first content layer: everything is bundled and silently refreshed from the website, so new work appears without an app update. • Native polish: motion and haptics, edge-to-edge layout, predictive back, dark/light themes, reduced-motion support, localised in English, German and Dutch. • In-app contact form posting to a serverless endpoint, plus optional push notifications for new work. • Labs section: a live BLE radar that maps every Bluetooth advertiser nearby, an on-chain guestbook writing real gas-sponsored transactions to Base Sepolia (no wallet needed), and a 30-second game with a live leaderboa

Sv3n Portfolio – Native Flutter App

A developer portfolio shipped as a native Android app, built end-to-end in Flutter and published on Google Play. The brief: prove I build apps by handing the visitor one, not a brochure. What I built: • Six case studies (DEX, staking platform, BLE breathalyzer companion, documentation platform and more), each stating the engineering problem, what was built and its current status. • Offline-first content layer: everything is bundled and silently refreshed from the website, so new work appears without an app update. • Native polish: motion and haptics, edge-to-edge layout, predictive back, dark/light themes, reduced-motion support, localised in English, German and Dutch. • In-app contact form posting to a serverless endpoint, plus optional push notifications for new work. • Labs section: a live BLE radar that maps every Bluetooth advertiser nearby, an on-chain guestbook writing real gas-sponsored transactions to Base Sepolia (no wallet needed), and a 30-second game with a live leaderboa

Sv3n Portfolio – Native Flutter App

A developer portfolio shipped as a native Android app, built end-to-end in Flutter and published on Google Play. The brief: prove I build apps by handing the visitor one, not a brochure. What I built: • Six case studies (DEX, staking platform, BLE breathalyzer companion, documentation platform and more), each stating the engineering problem, what was built and its current status. • Offline-first content layer: everything is bundled and silently refreshed from the website, so new work appears without an app update. • Native polish: motion and haptics, edge-to-edge layout, predictive back, dark/light themes, reduced-motion support, localised in English, German and Dutch. • In-app contact form posting to a serverless endpoint, plus optional push notifications for new work. • Labs section: a live BLE radar that maps every Bluetooth advertiser nearby, an on-chain guestbook writing real gas-sponsored transactions to Base Sepolia (no wallet needed), and a 30-second game with a live leaderboa

Sv3n Portfolio – Native Flutter App

14120693
Dragon Evolution is a real-time multiplayer browser game in the spirit of Slither.io, built solo from scratch. Players spawn as a larva, eat to gain mass, and evolve Larva → Serpent → Drake → Dragon along elemental paths. Combat is instant-kill and skill-based (body collision, headshots, fire breath), with boost, buffs, a dynamic circular world and tiered AI bots keeping every arena alive. No pay-to-win. STACK Backend: Rust, tokio, tokio-tungstenite WebSockets, 60 TPS in-memory simulation, MongoDB for persistence only. Frontend: TypeScript, PixiJS 8 (WebGL), Vite, snapshot interpolation, client-side prediction, HUD/menus, i18n. Infra: Docker Compose, Nginx, Playwright visual tests, bot simulator, load-test and packet-analysis tools. Process: 14 design documents and 30 Architecture Decision Records. KEY CHALLENGES SOLVED • Fair collision: moved the body model server-side, made it deterministic and tick-rate-independent, and sent the authoritative spine to clients so deaths always matc

Real-time Multiplayer Game - Snake

Dragon Evolution is a real-time multiplayer browser game in the spirit of Slither.io, built solo from scratch. Players spawn as a larva, eat to gain mass, and evolve Larva → Serpent → Drake → Dragon along elemental paths. Combat is instant-kill and skill-based (body collision, headshots, fire breath), with boost, buffs, a dynamic circular world and tiered AI bots keeping every arena alive. No pay-to-win. STACK Backend: Rust, tokio, tokio-tungstenite WebSockets, 60 TPS in-memory simulation, MongoDB for persistence only. Frontend: TypeScript, PixiJS 8 (WebGL), Vite, snapshot interpolation, client-side prediction, HUD/menus, i18n. Infra: Docker Compose, Nginx, Playwright visual tests, bot simulator, load-test and packet-analysis tools. Process: 14 design documents and 30 Architecture Decision Records. KEY CHALLENGES SOLVED • Fair collision: moved the body model server-side, made it deterministic and tick-rate-independent, and sent the authoritative spine to clients so deaths always matc

Real-time Multiplayer Game - Snake

Dragon Evolution is a real-time multiplayer browser game in the spirit of Slither.io, built solo from scratch. Players spawn as a larva, eat to gain mass, and evolve Larva → Serpent → Drake → Dragon along elemental paths. Combat is instant-kill and skill-based (body collision, headshots, fire breath), with boost, buffs, a dynamic circular world and tiered AI bots keeping every arena alive. No pay-to-win. STACK Backend: Rust, tokio, tokio-tungstenite WebSockets, 60 TPS in-memory simulation, MongoDB for persistence only. Frontend: TypeScript, PixiJS 8 (WebGL), Vite, snapshot interpolation, client-side prediction, HUD/menus, i18n. Infra: Docker Compose, Nginx, Playwright visual tests, bot simulator, load-test and packet-analysis tools. Process: 14 design documents and 30 Architecture Decision Records. KEY CHALLENGES SOLVED • Fair collision: moved the body model server-side, made it deterministic and tick-rate-independent, and sent the authoritative spine to clients so deaths always matc

Real-time Multiplayer Game - Snake

Dragon Evolution is a real-time multiplayer browser game in the spirit of Slither.io, built solo from scratch. Players spawn as a larva, eat to gain mass, and evolve Larva → Serpent → Drake → Dragon along elemental paths. Combat is instant-kill and skill-based (body collision, headshots, fire breath), with boost, buffs, a dynamic circular world and tiered AI bots keeping every arena alive. No pay-to-win. STACK Backend: Rust, tokio, tokio-tungstenite WebSockets, 60 TPS in-memory simulation, MongoDB for persistence only. Frontend: TypeScript, PixiJS 8 (WebGL), Vite, snapshot interpolation, client-side prediction, HUD/menus, i18n. Infra: Docker Compose, Nginx, Playwright visual tests, bot simulator, load-test and packet-analysis tools. Process: 14 design documents and 30 Architecture Decision Records. KEY CHALLENGES SOLVED • Fair collision: moved the body model server-side, made it deterministic and tick-rate-independent, and sent the authoritative spine to clients so deaths always matc

Real-time Multiplayer Game - Snake

14119592
My personal portfolio site, fully custom designed and built from scratch — no templates or themes. Full-stack build with React on the frontend, Node.js on the backend, and MongoDB for data. Styled with Tailwind CSS for a fully responsive layout across devices, and brought to life with GSAP animations for smooth, polished interactions throughout the site.

Sv3n.dev, Personal Portfolio Website

My personal portfolio site, fully custom designed and built from scratch — no templates or themes. Full-stack build with React on the frontend, Node.js on the backend, and MongoDB for data. Styled with Tailwind CSS for a fully responsive layout across devices, and brought to life with GSAP animations for smooth, polished interactions throughout the site.

Sv3n.dev, Personal Portfolio Website

My personal portfolio site, fully custom designed and built from scratch — no templates or themes. Full-stack build with React on the frontend, Node.js on the backend, and MongoDB for data. Styled with Tailwind CSS for a fully responsive layout across devices, and brought to life with GSAP animations for smooth, polished interactions throughout the site.

Sv3n.dev, Personal Portfolio Website

My personal portfolio site, fully custom designed and built from scratch — no templates or themes. Full-stack build with React on the frontend, Node.js on the backend, and MongoDB for data. Styled with Tailwind CSS for a fully responsive layout across devices, and brought to life with GSAP animations for smooth, polished interactions throughout the site.

Sv3n.dev, Personal Portfolio Website

14151738
VOIDLING is a 2D arcade climber for the web and Android. Gameplay • Fixed-seed procedural tower: every player climbs the same five zones, and it never ends • A rising Void with surges, checkpoints every ~100 m, revives, and a shop every 100 m • Stomp and dash combat, auto-aimed guns, throwable stones and bombs, power-ups (shield, wings, grapple hook, super jump) • Keyboard, mouse, gamepad and touch controls Visuals • Glossy sprites, squash-and-stretch animation, coded energy effects (lightning, plasma, fire), death animations, parallax depth • A Python art pipeline that cuts every object out of an Illustrator file, recolors licensed vector art to each zone's palette, and measures where characters can stand Tech • Plain JavaScript and HTML5 Canvas, with no game engine and no server • Offline-capable web app (PWA) on GitHub Pages; Android app built with Flutter • All sound is synthesized live in the browser (Web Audio) Play it: https://sv3nskie.github.io/voidling/

Voidling – 2D Arcade Space Climber

VOIDLING is a 2D arcade climber for the web and Android. Gameplay • Fixed-seed procedural tower: every player climbs the same five zones, and it never ends • A rising Void with surges, checkpoints every ~100 m, revives, and a shop every 100 m • Stomp and dash combat, auto-aimed guns, throwable stones and bombs, power-ups (shield, wings, grapple hook, super jump) • Keyboard, mouse, gamepad and touch controls Visuals • Glossy sprites, squash-and-stretch animation, coded energy effects (lightning, plasma, fire), death animations, parallax depth • A Python art pipeline that cuts every object out of an Illustrator file, recolors licensed vector art to each zone's palette, and measures where characters can stand Tech • Plain JavaScript and HTML5 Canvas, with no game engine and no server • Offline-capable web app (PWA) on GitHub Pages; Android app built with Flutter • All sound is synthesized live in the browser (Web Audio) Play it: https://sv3nskie.github.io/voidling/

Voidling – 2D Arcade Space Climber

14142760
A clean, conversion-focused website for Alexx Keukens, a Nijmegen-based company designing and installing German-quality kitchens and custom-made cabinets since 2006. The homepage leads with a strong headline and project photography, explains the 4-step process (showroom visit, design, measuring, installation), and showcases completed work in a clickable lightbox gallery. Includes an FAQ accordion, separate pages for kitchens, cabinets and contact, and multiple appointment calls to action to drive showroom visits. Fully responsive, SEO-friendly and fast. Designed, built and deployed end to end.

Kitchen Company Website – Alexx

A clean, conversion-focused website for Alexx Keukens, a Nijmegen-based company designing and installing German-quality kitchens and custom-made cabinets since 2006. The homepage leads with a strong headline and project photography, explains the 4-step process (showroom visit, design, measuring, installation), and showcases completed work in a clickable lightbox gallery. Includes an FAQ accordion, separate pages for kitchens, cabinets and contact, and multiple appointment calls to action to drive showroom visits. Fully responsive, SEO-friendly and fast. Designed, built and deployed end to end.

Kitchen Company Website – Alexx

14142755
A modern, image-led website for LÓDZ, a designer fashion boutique in Oisterwijk, Netherlands. The site presents the store's seasonal looks and accessories in an editorial, magazine-style layout, with an animated brand gallery, a featured-event banner, and clear calls to action for visiting the store. Built fully responsive and optimized for fast loading with compressed WebP/responsive images. Content is written in Dutch for the local audience, with a separate contact page showing opening hours and directions. Designed, built and deployed end to end.

Fashion Boutique Website – LÓDZ

A modern, image-led website for LÓDZ, a designer fashion boutique in Oisterwijk, Netherlands. The site presents the store's seasonal looks and accessories in an editorial, magazine-style layout, with an animated brand gallery, a featured-event banner, and clear calls to action for visiting the store. Built fully responsive and optimized for fast loading with compressed WebP/responsive images. Content is written in Dutch for the local audience, with a separate contact page showing opening hours and directions. Designed, built and deployed end to end.

Fashion Boutique Website – LÓDZ

14120742
A developer portfolio shipped as a native Android app, built end-to-end in Flutter and published on Google Play. The brief: prove I build apps by handing the visitor one, not a brochure. What I built: • Six case studies (DEX, staking platform, BLE breathalyzer companion, documentation platform and more), each stating the engineering problem, what was built and its current status. • Offline-first content layer: everything is bundled and silently refreshed from the website, so new work appears without an app update. • Native polish: motion and haptics, edge-to-edge layout, predictive back, dark/light themes, reduced-motion support, localised in English, German and Dutch. • In-app contact form posting to a serverless endpoint, plus optional push notifications for new work. • Labs section: a live BLE radar that maps every Bluetooth advertiser nearby, an on-chain guestbook writing real gas-sponsored transactions to Base Sepolia (no wallet needed), and a 30-second game with a live leaderboa

Sv3n Portfolio – Native Flutter App

A developer portfolio shipped as a native Android app, built end-to-end in Flutter and published on Google Play. The brief: prove I build apps by handing the visitor one, not a brochure. What I built: • Six case studies (DEX, staking platform, BLE breathalyzer companion, documentation platform and more), each stating the engineering problem, what was built and its current status. • Offline-first content layer: everything is bundled and silently refreshed from the website, so new work appears without an app update. • Native polish: motion and haptics, edge-to-edge layout, predictive back, dark/light themes, reduced-motion support, localised in English, German and Dutch. • In-app contact form posting to a serverless endpoint, plus optional push notifications for new work. • Labs section: a live BLE radar that maps every Bluetooth advertiser nearby, an on-chain guestbook writing real gas-sponsored transactions to Base Sepolia (no wallet needed), and a 30-second game with a live leaderboa

Sv3n Portfolio – Native Flutter App

A developer portfolio shipped as a native Android app, built end-to-end in Flutter and published on Google Play. The brief: prove I build apps by handing the visitor one, not a brochure. What I built: • Six case studies (DEX, staking platform, BLE breathalyzer companion, documentation platform and more), each stating the engineering problem, what was built and its current status. • Offline-first content layer: everything is bundled and silently refreshed from the website, so new work appears without an app update. • Native polish: motion and haptics, edge-to-edge layout, predictive back, dark/light themes, reduced-motion support, localised in English, German and Dutch. • In-app contact form posting to a serverless endpoint, plus optional push notifications for new work. • Labs section: a live BLE radar that maps every Bluetooth advertiser nearby, an on-chain guestbook writing real gas-sponsored transactions to Base Sepolia (no wallet needed), and a 30-second game with a live leaderboa

Sv3n Portfolio – Native Flutter App

14120693
Dragon Evolution is a real-time multiplayer browser game in the spirit of Slither.io, built solo from scratch. Players spawn as a larva, eat to gain mass, and evolve Larva → Serpent → Drake → Dragon along elemental paths. Combat is instant-kill and skill-based (body collision, headshots, fire breath), with boost, buffs, a dynamic circular world and tiered AI bots keeping every arena alive. No pay-to-win. STACK Backend: Rust, tokio, tokio-tungstenite WebSockets, 60 TPS in-memory simulation, MongoDB for persistence only. Frontend: TypeScript, PixiJS 8 (WebGL), Vite, snapshot interpolation, client-side prediction, HUD/menus, i18n. Infra: Docker Compose, Nginx, Playwright visual tests, bot simulator, load-test and packet-analysis tools. Process: 14 design documents and 30 Architecture Decision Records. KEY CHALLENGES SOLVED • Fair collision: moved the body model server-side, made it deterministic and tick-rate-independent, and sent the authoritative spine to clients so deaths always matc

Real-time Multiplayer Game - Snake

Dragon Evolution is a real-time multiplayer browser game in the spirit of Slither.io, built solo from scratch. Players spawn as a larva, eat to gain mass, and evolve Larva → Serpent → Drake → Dragon along elemental paths. Combat is instant-kill and skill-based (body collision, headshots, fire breath), with boost, buffs, a dynamic circular world and tiered AI bots keeping every arena alive. No pay-to-win. STACK Backend: Rust, tokio, tokio-tungstenite WebSockets, 60 TPS in-memory simulation, MongoDB for persistence only. Frontend: TypeScript, PixiJS 8 (WebGL), Vite, snapshot interpolation, client-side prediction, HUD/menus, i18n. Infra: Docker Compose, Nginx, Playwright visual tests, bot simulator, load-test and packet-analysis tools. Process: 14 design documents and 30 Architecture Decision Records. KEY CHALLENGES SOLVED • Fair collision: moved the body model server-side, made it deterministic and tick-rate-independent, and sent the authoritative spine to clients so deaths always matc

Real-time Multiplayer Game - Snake

Dragon Evolution is a real-time multiplayer browser game in the spirit of Slither.io, built solo from scratch. Players spawn as a larva, eat to gain mass, and evolve Larva → Serpent → Drake → Dragon along elemental paths. Combat is instant-kill and skill-based (body collision, headshots, fire breath), with boost, buffs, a dynamic circular world and tiered AI bots keeping every arena alive. No pay-to-win. STACK Backend: Rust, tokio, tokio-tungstenite WebSockets, 60 TPS in-memory simulation, MongoDB for persistence only. Frontend: TypeScript, PixiJS 8 (WebGL), Vite, snapshot interpolation, client-side prediction, HUD/menus, i18n. Infra: Docker Compose, Nginx, Playwright visual tests, bot simulator, load-test and packet-analysis tools. Process: 14 design documents and 30 Architecture Decision Records. KEY CHALLENGES SOLVED • Fair collision: moved the body model server-side, made it deterministic and tick-rate-independent, and sent the authoritative spine to clients so deaths always matc

Real-time Multiplayer Game - Snake

Dragon Evolution is a real-time multiplayer browser game in the spirit of Slither.io, built solo from scratch. Players spawn as a larva, eat to gain mass, and evolve Larva → Serpent → Drake → Dragon along elemental paths. Combat is instant-kill and skill-based (body collision, headshots, fire breath), with boost, buffs, a dynamic circular world and tiered AI bots keeping every arena alive. No pay-to-win. STACK Backend: Rust, tokio, tokio-tungstenite WebSockets, 60 TPS in-memory simulation, MongoDB for persistence only. Frontend: TypeScript, PixiJS 8 (WebGL), Vite, snapshot interpolation, client-side prediction, HUD/menus, i18n. Infra: Docker Compose, Nginx, Playwright visual tests, bot simulator, load-test and packet-analysis tools. Process: 14 design documents and 30 Architecture Decision Records. KEY CHALLENGES SOLVED • Fair collision: moved the body model server-side, made it deterministic and tick-rate-independent, and sent the authoritative spine to clients so deaths always matc

Real-time Multiplayer Game - Snake

14119592
My personal portfolio site, fully custom designed and built from scratch — no templates or themes. Full-stack build with React on the frontend, Node.js on the backend, and MongoDB for data. Styled with Tailwind CSS for a fully responsive layout across devices, and brought to life with GSAP animations for smooth, polished interactions throughout the site.

Sv3n.dev, Personal Portfolio Website

My personal portfolio site, fully custom designed and built from scratch — no templates or themes. Full-stack build with React on the frontend, Node.js on the backend, and MongoDB for data. Styled with Tailwind CSS for a fully responsive layout across devices, and brought to life with GSAP animations for smooth, polished interactions throughout the site.

Sv3n.dev, Personal Portfolio Website

My personal portfolio site, fully custom designed and built from scratch — no templates or themes. Full-stack build with React on the frontend, Node.js on the backend, and MongoDB for data. Styled with Tailwind CSS for a fully responsive layout across devices, and brought to life with GSAP animations for smooth, polished interactions throughout the site.

Sv3n.dev, Personal Portfolio Website

My personal portfolio site, fully custom designed and built from scratch — no templates or themes. Full-stack build with React on the frontend, Node.js on the backend, and MongoDB for data. Styled with Tailwind CSS for a fully responsive layout across devices, and brought to life with GSAP animations for smooth, polished interactions throughout the site.

Sv3n.dev, Personal Portfolio Website

5.0 · 108 Reviews
108 Reviews
User Avatar
Flag of DENMARK

Henrik

5.0

$250 USD

7 days ago

Global Tourist Webcam JSON Compilation

Fully understood the problem - with the best solution, clear communication. Good work!

Data Processing
Web Scraping
Web Services
JSON
Web Development

+5 more

Share

L
Flag of NETHERLANDS

Leon

5.0

€315 EUR

13 days ago

Website alexxkeukens.nl

Sven heeft mij via de mail heel netjes gevraagd of hij iets voor mij kon betekenen met betrekking tot mijn verouderde website. Aangezien ik hier al langer iets mee wilde doen, maar nooit wist welke partij dit netjes voor mij zou kunnen aanpakken ben ik akkoord gegaan met het voorstel van Sven. Sven heeft mij super geholpen en fantastische input geleverd, zowel grafisch als ook de teksten en lay-out. Bedankt voor de prettige communicatie!!!

JavaScript
Website Design
CSS
Blockchain

+1 more

Share

I
Flag of SPAIN

Gerard

5.0

€309 EUR

16 days ago

Website Lodz.nl

I was suprised about the friendlyness and the easy way Sven is understanding yours needs. And working toghether with him was a very nice experience! His expertise and skills where for me an amazing eyeopener Thanx amigo. I will do my best to give you more work . Thanx again. ??

JavaScript
Website Design
CSS
jQuery / Prototype

+3 more

Share

User Avatar
Flag of UNITED STATES

Joe

5.0

$30 USD

29 days ago

Simple website update

Fast and responsive! The best dev I've worked with! I will rehire again!

JavaScript
Website Design
CSS
HTML

Share

User Avatar
Flag of UNITED STATES

Joe

5.0

$30 USD

1 month ago

Rust data science and algorithms programmer needed

Great job, fast delivery, fully working as per requirement. Thank you!

Data Processing
Algorithm
Statistical Analysis
Data Science
Rust

Share

Experience

Sv3n

Jul, 2015 - Present

•

11 years, 2 months

App Developer (React Native & Flutter)

Jul, 2015 - Present

•

11 years, 2 months

Experienced in building cross-platform mobile apps with React Native and Flutter, focusing on performance and user experience. Proficient in developing seamless, responsive apps for iOS and Android, leveraging each framework's strengths. Skilled in API integration, secure authentication, and app optimization. With a strong design background, I create visually engaging, intuitive UIs that enhance user experience.

Flag of NETHERLANDS

Maastricht, Netherlands

MERN Stack Developer

Jul, 2015 - Present

•

11 years, 2 months

Proficient in the full MERN stack, with expertise in MongoDB, Express for API development, React for dynamic front-end interfaces, and Node.js for server-side scripting. Experienced in building secure login systems, integrating payment gateways, and ensuring data protection. With a strong background in graphic design, I excel in creating pixel-perfect UI/UX designs, delivering visually appealing and user-friendly applications.

Flag of NETHERLANDS

Maastrich, Netherlands

User Avatar

Joe

@joevarghese21

 ·

CEO of dexmarketcap. Sven was lead developer

Sv3n was the lead developer on DexMarketCap.app, our real-time DEX analytics platform. He built the core stack across React, Node.js, and MongoDB, developed our Rust-based scraper/aggregator, and handled Web3/ethers.js integration including complex MongoDB aggregation pipelines for wallet P&L tracking. Reliable, technically strong, and easy to communicate with throughout.

Blockchain Developer

Jul, 2015 - Present

•

11 years, 2 months

Specialized in EVM-based blockchain development with extensive experience in customizing nodes, building and interacting with smart contracts, and developing advanced blockchain solutions. Proficient in creating arbitrage bots, DEX analytics tools, and decentralized applications (dApps). Skilled in the development of NFT P2E games and a wide range of blockchain technologies, consistently delivering high-quality, innovative solutions.

Flag of NETHERLANDS

Maastricht, Netherlands

Jul, 2015 - Present

•

11 years, 2 months

Multimedia designer

Feb, 2011 - Jun, 2015

•

4 years, 4 months

KRACH12

Feb, 2011 - Jun, 2015

•

4 years, 4 months

As a Multimedia Designer, I led video production projects from concept to completion, including storyboard creation, planning, and team management. My expertise extends to animation, web design (HTML, CSS, JavaScript), and graphic design. I am skilled in crafting engaging user interactions and delivering high-quality multimedia content across various platforms.

Feb, 2011 - Jun, 2015

•

4 years, 4 months

Certifications

US English - Level 1

US English

P

Preferred Freelancer Program SLA

Algorithms - Level 2

Algorithms

JavaScript - Level 3

JavaScript

JavaScript - Level 1

JavaScript

Freelancer logo US (International) / English
Help & Support

Freelancer

Categories Projects Contests Freelancers Enterprise Innovation Challenges AI Development Membership Preferred Freelancer Program Project Management Local Jobs Photo Anywhere Showcase API for Developers Get Verified

About

About us How it Works Security Investor Sitemap Stories News Team Awards Press Releases Careers

Terms

Privacy Policy Terms and Conditions Copyright Policy Code of Conduct Fees and Charges

Partners

Escrow.com Loadshift Warrior Forum

Apps

Apple App Store logoGoogle Play logo

Registered Users

Total Jobs Posted

Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)

Copyright © 2026 Freelancer Technology Pty Limited (ACN 142 189 759)