
Millions of people use Freelancer to turn their ideas into reality.
Trusted by leading brands and startups
Underscore.js is a powerful JavaScript library that provides a suite of utility functions for common programming tasks. It offers functional programming helpers that make it easier to manipulate arrays, objects, and functions in your code. Whether you're handling data manipulation or complex algorithms, Underscore.js simplifies JavaScript development for both client-side and server-side applications.
Looking to boost your project with Underscore.js expertise? Freelancer is the best-rated platform for hiring Underscore.js developers. With professionals available for every budget, you can easily find the right talent. Plus, Freelancer's Milestone Payment system ensures you only pay when you're 100% satisfied.
Post your project for free and connect with skilled freelancers ready to start today. Compare bids, ratings and portfolios, and only pay when you're happy with the work.
~260 sec
to first bid
54+
bids per project
4k+
freelancers online
No upfront cost · pay only when you're happy with the work

8.3
8.3
94%

Karachi, Pakistan
$25 USD per hour
We build AI-powered software systems, intelligent automation workflows, AI agents, MCP servers, and scalable SaaS platforms for startups, agencies, and enterprises. Our expertise includes AI agent architecture, workflow automation, OpenAI integrations, multi-agent systems, MCP server development, CRM automation, business process automation, and enterprise-grade web applications. We help businesses automate operations, reduce manual work, improve customer experience, and scale faster using modern AI technologies. 🚀 Core Expertise: ✔ AI Agents & Autonomous Systems ✔ MCP Server Development ✔ OpenAI, Claude & Gemini Integrations ✔ AI Chatbots & Assistants ✔ n8n & Workflow Automation ✔ AI CRM & Business Automation ✔ SaaS Platforms & Enterprise Applications ✔ Laravel, React, Node.js & APIs ✔ Multi-Tenant Architectures ✔ Cloud Infrastructure & DevOps 💡 We specialize in: • AI-powered CRM systems • AI customer support agents • Business workflow automation • AI lead qualification systems • AI dashboards & analytics • AI-enhanced marketplaces • AI-integrated ERP/CRM platforms • Voice AI & AI chat systems • Custom MCP server implementations Our focus is delivering scalable, secure, maintainable, and revenue-driven AI software solutions with long-term business value.

9.7
9.7
98%

Gurugram, India
$45 USD per hour
Custom Software, AI and SaaS Product Studio. 14 Years, One Platform. We have built exclusively on Freelancer.com for 14 years. 500+ projects delivered. 5.0 rating across 512 reviews. 23% repeat hire rate. This is our only sales channel, so every project gets our full attention, not overflow from an agency spread across ten platforms. What we build Custom software and SaaS platforms. Full stack, scalable, built to hand off cleanly. AI native products. ChatGPT, Claude and Gemini integrations, AI chatbots, voice agents, workflow automation. Ecommerce and marketplaces. Shopify, WooCommerce, multivendor platforms. WordPress, Laravel, React, Next.js and Node.js. Production grade, not template work. You will work directly with Akash (CTO, 14 years on this platform) and Shubham or Divya (client relationship leads, named by clients in reviews going back years). The same people from your first message to final delivery. No account handoffs, no rotating project managers. 152 professional recommendations back that consistency. 100% in house team. No outsourcing. We treat every project as if we are the ones maintaining it three years from now, because often we are. Some clients have stayed with us since 2012. If your project does not need custom development, we will tell you before you spend the money. Core expertise Frontend: React, Next.js, Vue, Angular, TypeScript Backend: Node.js, Express, NestJS, Laravel, FastAPI, Core PHP Mobile: React Native, Flutter Databases: PostgreSQL, MongoDB, MySQL, Supabase Cloud: AWS, Google Cloud, Docker AI and Automation: OpenAI, Claude and Gemini APIs, RAG pipelines, LangChain, AI agents CMS and Ecommerce: WordPress, Shopify, WooCommerce, Wix, Squarespace, BigCommerce, Magento, Joomla, OpenCart, Weebly, Webflow, GoDaddy Website Builder, headless CMS Payments, Billing and Subscriptions: Stripe, Stripe Connect, PayPal, Razorpay, WooPayments, NOWPayments, ccBill, LemonSqueezy, Peppol Voice and Telephony: VAPI for inbound and outbound call orchestration with function calling, Twilio for phone number provisioning CRM and Automation: HubSpot, Zapier Lead Generation and Landing Pages: HubSpot, Odoo, Webflow, GoHighLevel, Apify, Outscraper Email and Communication: Postmark, Nodemailer, Mailivery, Gmail API, Microsoft Graph API, Yahoo IMAP, SendGrid AI Assisted Development: Cursor, Replit, Bubble, WeWeb, Lovable, Bolt, Base44 Let's talk about what you are trying to build.

9.8
9.8
96%

Jodhpur, India
$25 USD per hour
Microlent is a 70+ member product engineering team. Since 2008, we've successfully delivered 390+ projects on Freelancer, specializing in SaaS platforms, mobile applications, custom web solutions, and AI integrations for founders, startups, and SMBs. Recent projects include: * Aetherius: React-based MSP platform * CAMS: Asset management SaaS for Complex Asset Management Solutions (complexam.com) * CleanSpace AI * Food delivery driver app used by 1,000+ active drivers We're the right partner if you're looking for a team that can own the entire product lifecycle from product strategy and UI/UX design to development, deployment, and 12 months of post-launch support without the hassle of managing multiple contractors. Typical engagement: 6-10 weeks (depending on project scope). Send us a brief overview of your project, and we'll get back to you within 1 hour with clarifying questions and a rough estimate. Our Services ✅ Custom Web Applications ✅ Mobile App Development (Android, iOS, Flutter & React Native) ✅ SaaS Platforms & Enterprise Software ✅ WordPress, Shopify & Custom eCommerce Development ✅ AI Integration & Business Automation ✅ API Development & Third-Party Integrations ✅ UI/UX Design ✅ SEO & Digital Marketing ✅ Cloud Deployment & DevOps Technologies We Work With • PHP, Laravel, ASP.NET Core, Node.js, Python • React, Next.js, Vue.js, HTML, CSS & JavaScript • Flutter, React Native, Android & iOS • WooCommerce, Shopify & Custom eCommerce Solutions • AWS, Azure, Docker & CI/CD Why Clients Choose Microlent ⭐ 390+ Successfully Delivered Projects ⭐ 4.9★ Client Satisfaction Rating ⭐ Transparent Communication & Agile Development ⭐ Secure, Clean & Scalable Code ⭐ On-Time Delivery with Dedicated Project Management ⭐ Long-Term Maintenance & Technical Support Whether you're launching a startup, modernizing an existing platform, building a SaaS product, automating business processes with AI, or growing your online presence through SEO and digital marketing, we're ready to help turn your vision into reality. Let's build something exceptional together.

9.8
9.8
93%

Dhaka, Bangladesh
$20 USD per hour
➡️ Mediusware | AI-Powered SaaS & Web Development Company | Automation & Scalable Systems Most projects fail due to slow execution, manual processes and poor scalability. We solve that with AI-powered development, automation systems and a dedicated expert team. I’m Shahin, CEO of Mediusware — an AI-powered software development company helping startups and growing businesses build, automate and scale products faster and more efficiently. We don’t just develop software. We combine AI, automation and engineering systems to build smarter, faster, and more scalable solutions. 💡 Why Mediusware → AI-powered development workflows for faster and more efficient delivery → Automation-first approach to reduce manual work and operational costs → Dedicated team model with project manager, developers, QA, and designer → System-driven execution with clear processes and predictable outcomes → Reliable communication and structured project tracking → Long-term scaling and optimization support 🛠️ Our Expertise → SaaS product development from MVP to scalable platform → AI-powered applications and intelligent systems → Automation systems using n8n, Zapier, Make and custom workflows → AI and Machine Learning integrations including LLMs, chatbots, and data-driven features → Business process automation and workflow optimization Web & Software Development → Frontend: React, Next.js, Vue → Backend: Node.js, Laravel, Python Django, Java, .NET → API development and third-party integrations Mobile Development → Cross-platform: Flutter, React Native → Native iOS: Swift, Objective-C → Native Android: Kotlin, Java → Hybrid frameworks: Ionic, Xamarin → Progressive Web Apps for mobile-ready web solutions CMS & No-Code Platforms → WordPress development and customization → Shopify stores and eCommerce solutions → Wix websites → Webflow design and development Design & Product → UI and UX design using Figma with product-focused approach Support & Scaling → Maintenance, optimization, and performance scaling ⚙️ How We Deliver → Understand your business goals and automation opportunities → Design system architecture and workflow strategy → Execute using AI-accelerated development and automation tools → Build scalable systems, apps, and automation pipelines → Provide regular updates with full transparency → Continuously improve performance and efficiency 📈 What You Get → Faster delivery with AI-powered execution → Reduced operational costs through automation → Scalable systems built for growth → Clean, maintainable, production-ready code → Reliable team with no single point of failure → Strong project management and accountability → A long-term technical and automation partner 🤝 Let’s Build If you're building a SaaS, automating your business, or scaling your product: → Send a message → Get a clear scope, automation plan, and execution roadmap

6.4
6.4
94%

Raniyala Dayalpur-2, India
$8 USD per hour
**✅ Typically replies within 2 hours** --- ## ? Why Work With Me? - I’m a **full-time freelancer** — committed to your project every day of the week. - Available **7 days a week**, including weekends. - I offer **unlimited revisions** — your satisfaction comes first, always. --- ## ? What I Do I design and develop websites that help your business: ✔️ Streamline operations ✔️ Increase conversions ✔️ Deliver a seamless user experience Whether you need a fresh build or a redesign, I aim to make your site **fast**, **SEO-friendly**, **responsive**, and **visually stunning** — across all devices. --- ## ?️ Services Offered - ✅ **Custom HTML5 / CSS3 Templates** - ✅ Responsive design with **Bootstrap & jQuery** - ✅ **PSD → Pixel-perfect HTML/CSS/JS** - ✅ **PSD → Fully functional WordPress website** - ✅ **Custom WordPress development from scratch** - ✅ **eCommerce websites** (WooCommerce, Shopify custom themes) - ✅ **Bug fixing & site repair** - ✅ **Mobile/tablet optimization** - ✅ **Website redesigns** - ✅ **Email templates** --- I bring a blend of **clean code**, **user-first design**, and **strong communication** to every project. Let’s build something exceptional together.

7.3
7.3
96%

Karachi, Pakistan
$50 USD per hour
بِسْمِ اللهِ الرَّحْمٰنِ الرَّحِيْمِ صل على محمدﷺ السلام عليك يا رسول اللهﷺ السلام عليك يا حبيبي يا نبي اللهﷺ 𝗦𝗼𝗳𝘁𝗲𝗰𝗵𝗶𝗲𝘀 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 has been delivering premium, production-ready software on this platform since 2012, with 24 client recommendations over 14+ years. We are a 𝗵𝗶𝗴𝗵-𝗰𝗮𝗹𝗶𝗯𝗲𝗿 𝗳𝘂𝗹𝗹-𝘀𝘁𝗮𝗰𝗸 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗮𝗴𝗲𝗻𝗰𝘆 that takes complex technical projects from initial architecture to global deployment and long-term infrastructure support. Clients work with us for our clear communications, meticulous code quality, and milestone-driven delivery. 𝗪𝗵𝗮𝘁 𝗪𝗲 𝗕𝘂𝗶𝗹𝗱 & 𝗦𝘂𝗽𝗽𝗼𝗿𝘁: 𝗪𝗲𝗯, 𝗦𝗮𝗮𝗦 & 𝗧𝗿𝗮𝗱𝗶𝗻𝗴 𝗦𝘆𝘀𝘁𝗲𝗺𝘀: Laravel, .NET Core, Node.js, React, Angular, Next.js, REST APIs, custom administration dashboards, Pine Script (v4/v5/v6), TradingView integrations, and quantitative logic replication. 𝗗𝗮𝘁𝗮 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻: Custom scraping pipelines, algorithmic engines, automation scripts, multi-threaded processing, and machine learning model training workflows (Python, PyTorch, TensorFlow). 𝗘𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲 & 𝗪𝗶𝗻𝗱𝗼𝘄𝘀: .NET 8 Windows Services, WinUI 3 desktop applications, IIS, SQL Server, and legacy software migrations. 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀: Cross-platform and native builds using Flutter, React Native, iOS, and Android ecosystems. 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀: Infrastructure optimization on Azure DevOps, AWS, Azure AD, GitHub Actions CI/CD setups, and secure Windows/Linux server management. 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 & 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: SCEP/EST protocol servers, certificate automation, code signing setups, SSL/TLS, PostgreSQL, MySQL, and SQLite integrations. 𝗖𝗠𝗦 & 𝗘-𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲: WordPress, Shopify, WooCommerce, Magento, and ultra-fast headless builds. We take on complex engineering tasks that require deep technical knowledge. Tell us about your project and we will provide a rigorous, honest analysis of your scope and timeline before any code is written.

10.0
10.0
98%

Ahmedabad, India
$20 USD per hour
✨ Welcome to Our Profile!✨ AIS Technolabs is a leading developer of: ❖ Mobile Applications (Native & Hybrid) ❖ Multi-player Games (Unity 3D, Unreal Engine 5) ❖ Responsive Websites (Open Source, HTML, CSS, JavaScript) ❖ Advanced Solutions in IoT, VR, and AR ✅ Since 2010, we've successfully completed 3200+ projects and built an impressive portfolio that continues to grow. Specialties ✨ We excel in a diverse range of technical expertise—from a simple HTML page to robust Enterprise Solutions. ✅ Website Development: - Front-End: HTML, CSS, JavaScript, Angular.js, React.js, jQuery, SASS - Back-End: PHP, C++, Java, Python, Node.js, Express.js, Django, Ruby on Rails, Laravel, Spring ✅ Mobile App Development: - iOS/Android Apps (Java, Swift) - Cross-Platform Apps (React Native, Ionic App) ✅ Game Development: - Unity3D, Unreal Engine 5 ✅ IoT, Virtual Reality (VR), and Augmented Reality (AR): - Cutting-edge solutions tailored for innovative and immersive experiences ✅ Blockchain & Cryptocurrency Solutions: - Custom Cryptocurrency Development - Cryptocurrency Wallets - Exchange Applications ✅ Worked With Blockchain Leaders: - Tron, Binance Chain, and Ether Chains Successful Projects Completed ★ Games: - RPG, FPS, Casino, Slot Machine, Crash Game, Jackpot, Roulette, Poker, Coinflip, NFT, Sports Betting, Ludo, Card Game, Action, Adventure, Arcade, Shooting, Bingo, Dice, Lottery, Cricket, Racing, Soccer ★ Apps: - Flight Booking, Hotel Booking, Social Media, Dating, Taxi, Live Streaming, IPTV, Money Transfer, Food Delivery, Courier, Chat, Auction, Trading, Booking, Fintech, Finance, Productivity, etc. ★ Software: - ERP, CRM, Project Management, HR Management, Fleet Management, Employee Management, Vendor Management, Inventory Management, Task Management, Staff Management ★ Websites: - Dating, Social Media, Real Estate, eCommerce, Construction, Bakery, Informative, Blog, Business, Corporate ✱ Why Choose Us? We aim to build long-term relationships with our clients. Your satisfaction is our mission! We are just a click away to assist you!

6.7
6.7
99%

Howrah, India
$75 USD per hour
We are Codesigma Technology Services, a full-stack development agency based in India with 10+ years of delivering complex, production-ready applications. Our founder and top developers have experience working with Inc. 5000 companies and professional teams across the world, bringing a strong understanding of diverse, multicultural work environments to every project. We are a tight team of experienced developers - small enough to move fast, experienced enough to build right. You always work with the most senior person, not a project manager who delegates to juniors. What we've built: -> Cross-platform POS system - React, Firebase, Flutter, Electron - running on Web, Android, iOS, macOS, and Windows with full offline-first functionality and real-time sync -> Multi-channel e-commerce aggregator - unified management of Amazon, Flipkart, Shopify, Meesho, Nykaa orders, inventory, warehouse, and payment reconciliation -> Real-time audio/video interpretation SaaS - Twilio Voice/Video, Task Router, BoostLingo integration, serving a global user base -> Booking systems, media streaming platforms, headless CMS websites, Shopify applications, and WordPress plugins across industries Our technical stack: Frontend: React, Next.js, Angular, JavaScript, TypeScript Backend: Node.js, PHP (Laravel, CodeIgniter), Python Mobile & desktop: Flutter, React Native, Electron.js Real-time: Twilio, Firebase, WebSockets Data: MySQL, MongoDB, PostgreSQL, Firestore Integrations: Stripe, PayPal, Razorpay, Shopify API, Amazon SP-API, GraphQL Infrastructure: AWS, Linux server management, deployment We are the right fit if you need: - A long-term development partner, not a one-off freelancer - End-to-end ownership from architecture to deployment - Cross-platform delivery (web + mobile + desktop from one team) - Complex integrations with third-party APIs and platforms - Clean, documented, maintainable code that your team can take over We work on fixed-price and hourly engagements. For ongoing projects, we offer monthly retainer arrangements. Let's discuss your project.

6.9
6.9
91%

SAS Nagar, India
$20 USD per hour
I'm a Mobile App Developer, Flutter and React Native Specialist, AI and LLM Engineer (OpenAI API, GPT-4o, Claude, LangChain, RAG Systems, AI Agents, Fine-tuning, Prompt Engineering, Vector Databases, Embeddings, AI Model Deployment), Automation Engineer (n8n, Make, Zapier, Workflow Automation, Python Automation, RPA, API Integration, Webhooks, Data Pipelines) and Mobile and Automation with Python and Full AI Solutions Architect with solid experience in web and mobile app development. I have mastery level expertise in mobile app development with Flutter, React Native, Kotlin, Swift, iOS Development, Android Development, Firebase, RESTful APIs, GraphQL, State Management, CI/CD for Mobile and Mobile UI/UX Design. I manage complex requirements within open source CMS and MVC frameworks such as WordPress, Webflow, Laravel and CodeIgniter. I also develop eCommerce solutions on WooCommerce, Shopify, PrestaShop and Magento platforms. I create UI/UX design in Figma and Adobe XD for responsive design, wireframe and prototype. ✔ WordPress CMS Expertise & Moodle • Custom Theme Development • Plugin Development & Customization • Elementor & Page Builder Design • Website Speed Optimization • Security & Maintenance • API Integration • Migration & Backup ✔ AI Automation & LLM Integration • AI/LLM: OpenAI API (GPT-4o, GPT-3.5), Claude, LangChain, RAG Systems, AI Agents • Automation: n8n, Make, Monday, Zapier, Workflow Automation • Custom chatbot implementation • AI powered content generation • Natural language processing features • LangChain & vector database setup ✔ Mobile App Development • Cross-platform: Flutter, React Native • Native: Kotlin (Android), Swift (iOS) • Firebase integration • REST API integration • Real-time features & push notifications ✔ Web, MERN & Python Development • MERN Stack: MongoDB, Express.js, React.js, Node.js • Frontend: React.js, Next.js • Backend: Node.js (Express.js/NestJS), Python (Django, Flask, FastAPI), PHP (Laravel, CodeIgniter) • CMS & Open Source: WordPress, Webflow • API development & automation with Python • Databases: MongoDB, MySQL, PostgreSQL ✔ eCommerce Development • WooCommerce • Shopify • PrestaShop • Magento • Custom eCommerce solutions ✔ Cloud & DevOps • AWS, Google Cloud, Azure • Docker • GitHub Actions • Jenkins ✔ Security & Integrations • JWT, OAuth 2.0, Firebase Auth • REST APIs, GraphQL • WebSockets ✔ UI/UX Design • Figma, Adobe XD • Responsive design • Wireframing & prototyping ✔ Additional Expertise • PHP, MySQL • REST API Integration • Third-party Plugin Integration • Hosting & Cloud Deployment • Payment gateway integration • App store deployment • Performance optimization • Code review & debugging • Third party API integration Note: I'm available full time and can start immediately. Please connect with me to discuss your project requirements. My priority is quality work and bug free code. I do not move to next step without proper test.
An Underscore.js developer is a JavaScript programmer who uses the Underscore.js utility library to write cleaner, faster, and more functional code for handling arrays, objects, collections, and data transformations in web applications. Hiring an Underscore.js developer means bringing in a JavaScript specialist who can simplify complex data manipulation, refactor legacy code, and integrate utility-driven logic into modern front-end and Node.js projects.
Underscore.js remains a widely used helper library for projects that depend on functional-style JavaScript without the overhead of larger frameworks. A skilled Underscore.js developer writes performant, readable code that handles iteration, filtering, mapping, grouping, throttling, and templating with minimal boilerplate. The commercial value is straightforward: cleaner data layers, fewer bugs, faster feature delivery, and easier maintenance of JavaScript codebases that already rely on Underscore or its sibling library Lodash.
Most engagements involve building or maintaining JavaScript applications where Underscore underpins the data layer. That includes single-page applications, Backbone.js projects (where Underscore is a hard dependency), Node.js services, and legacy enterprise apps that need careful refactoring rather than a full rewrite.
An Underscore.js expert typically handles a mix of new development, code review, and modernization. Specific deliverables include:
An effective Underscore.js developer brings strong general JavaScript fundamentals along with familiarity with the surrounding ecosystem. Expect proficiency with:
Underscore.js is most often found in established codebases across SaaS platforms, fintech dashboards, e-commerce back offices, healthcare data tools, ad-tech reporting interfaces, and content management systems. It is also common in any product that originated during the Backbone.js era and continues to be maintained. Typical use cases include reporting dashboards with heavy client-side aggregation, admin panels that manipulate JSON collections, real-time interfaces that need throttled event handling, and data-driven internal tools where utility functions reduce code volume significantly.
Strong candidates demonstrate deep JavaScript fluency, not just familiarity with a utility library. Look for portfolio evidence of production JavaScript work, contributions to open-source repositories, and clear examples of refactoring or performance optimization. Public GitHub activity, npm package authorship, and prior Backbone.js or Node.js experience are reliable signals.
When screening, focus on how candidates think about immutability, composition, and trade-offs between Underscore and native methods. Sample interview questions you can use directly:
Freelancer.com gives you access to a global pool of JavaScript professionals with verified profiles, public ratings, and detailed work histories. You can compare freelancers on Freelancer.com side by side using portfolio evidence, completed project counts, and written client reviews before committing. Whether you need a short refactor, a long-running maintenance contract, or a senior engineer to lead a Backbone.js migration, the platform's bidding model surfaces relevant talent quickly. Clients set their own budgets, receive competitive bids, and use Milestone Payments to release funds only when work meets the agreed standard. The scale and reach of Freelancer.com mean you can fill roles across time zones, which is useful for both rapid turnaround and ongoing support.
Ready to bring functional, maintainable JavaScript to your codebase?
Hiring the right Underscore.js developer comes down to writing a clear brief, reading bids carefully, and verifying past work before awarding. The process below is built around the specifics of JavaScript utility work, where small details about your codebase make a big difference to bid accuracy.
The brief is the single biggest determinant of bid quality. A vague post attracts generic proposals; a specific one filters for developers who genuinely understand Underscore.js, Backbone.js, and modern JavaScript trade-offs. Head to the
Bids are short proposals, not just price quotes. They reveal how the freelancer interprets your brief, what approach they would take, and whether their timeline is realistic. Read each bid carefully and shortlist developers whose understanding of utility-style JavaScript and your specific stack matches what you described.
The final decision combines proposal quality with profile evidence. Look at consistency across past JavaScript projects rather than relying on one strong example. For Underscore.js work specifically, you want to see sustained experience with functional JavaScript, refactoring, and library-driven development.
Underscore.js and Lodash share a similar API, but Lodash was originally a fork that prioritized performance and added more functions. Most experienced Underscore developers are equally comfortable with Lodash, and many projects use them interchangeably or migrate from one to the other.
Yes. Short refactoring engagements are common, especially for teams modernizing legacy Backbone.js or jQuery codebases. A clear brief with the target files, current pain points, and desired outcome lets freelancers scope the work accurately and submit focused bids.
Not always. Native methods cover many of Underscore's features, but functions like _.groupBy, _.debounce, _.throttle, _.template, and deep object utilities still save meaningful time. A skilled developer can advise on whether to keep Underscore, swap in Lodash, or rely on native methods.
For utility-focused JavaScript work, an individual freelancer is usually faster and more cost-effective than an agency. Agencies make sense only when you need a full product team. For targeted refactors, library upgrades, or feature additions, a single experienced freelancer is typically the better fit.
Small refactors and bug fixes can be completed in a few days, while larger migrations or feature builds may run several weeks. Timelines depend on codebase size, test coverage, and the complexity of the data transformations involved.

Freelancer Enterprise
Use our workforce of 89.2 million to help your business achieve more.

Freelancer API
Why hire people when you can simply integrate our talented cloud workforce instead?
Post a project today and get bids from talented freelancers
Get some inspiration from Underscore.js projects

Website Design.
$540 USD in 7 days.

App Design.
$100 USD in 1 day.

Website.
$430 USD in 1 day.

Website Design.
$140 USD in 13 days.

App Design.
$200 USD in 19 days.

Website.
$150 USD in 13 days.

Website.
$240 USD in 1 day.

Website.
$100 USD in 1 day.
Millions of users, from small businesses to large enterprises, entrepreneurs to startups, use Freelancer to turn their ideas into reality.
89.2M
89.2M
Registered Users
25.7M
25.7M
Total Jobs Posted