Security is a term used to describe the measures taken to protect data and systems from external threats. Security Engineers are professionals who have the expertise and skills to develop, secure and maintain systems and applications. They are essential for any business or organization that wants to protect their sensitive online information from any malicious attack or unauthorized access. Security Engineers are familiar with network architecture, firewall technology, cryptography, risk assessment and compliance procedures.

Here's some projects that our expert Security Engineers made real:

  • Assured user identity authentication using cryptographic means
  • Designed security protocols to understand and mitigate potential risks
  • Implemented safe cloud computing solutions with robust authentication
  • Developed secure authentication procedures for application development
  • Carried out penetration tests on corporate networks in order to test its security
  • Investigated security breaches and enabled threats resilience
  • Installed virus removal software and provided reliable back up solutions

At Freelancer.com, you can find experienced Security Engineers who can help you protect your data, assess risks, and create secure systems. We have a wide range of experts who can meet your needs for security, governance and risk projects. Our Security Engineers have the knowledge, skills and experience that you need have a successful project. If you're looking for professionals who can deliver reliable security solutions, post your project on Freelancer.com today and hire a qualified Security Engineer!

From 25,552 reviews, clients rate our Security Engineers 4.93 out of 5 stars.
Hire Security Engineers

Security is a term used to describe the measures taken to protect data and systems from external threats. Security Engineers are professionals who have the expertise and skills to develop, secure and maintain systems and applications. They are essential for any business or organization that wants to protect their sensitive online information from any malicious attack or unauthorized access. Security Engineers are familiar with network architecture, firewall technology, cryptography, risk assessment and compliance procedures.

Here's some projects that our expert Security Engineers made real:

  • Assured user identity authentication using cryptographic means
  • Designed security protocols to understand and mitigate potential risks
  • Implemented safe cloud computing solutions with robust authentication
  • Developed secure authentication procedures for application development
  • Carried out penetration tests on corporate networks in order to test its security
  • Investigated security breaches and enabled threats resilience
  • Installed virus removal software and provided reliable back up solutions

At Freelancer.com, you can find experienced Security Engineers who can help you protect your data, assess risks, and create secure systems. We have a wide range of experts who can meet your needs for security, governance and risk projects. Our Security Engineers have the knowledge, skills and experience that you need have a successful project. If you're looking for professionals who can deliver reliable security solutions, post your project on Freelancer.com today and hire a qualified Security Engineer!

From 25,552 reviews, clients rate our Security Engineers 4.93 out of 5 stars.
Hire Security Engineers

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    31 jobs found

    I need an Android app that allows me to remotely control another Android device. Essential Functionalities: - Access files and data: View, edit, and delete - Manage apps: Install/uninstall, open/close, and monitor usage - Control device settings Ideal Skills & Experience: - Android app development - Experience with remote access technologies - Strong security protocols knowledge - UI/UX design for user-friendly interfaces Please include examples of similar work and ensure robust security measures.

    $348 Average bid
    $348 Avg Bid
    47 bids

    Nexara Labs USA is looking for a principal-level backend engineer who wants something bigger than another short freelance ticket. We already have a live platform, CRM workflows, quoting logic, affiliate attribution, sales infrastructure, internal tools, and real operational users. We need someone capable of stepping into an existing production environment and strengthening the systems that determine whether the company scales safely. Potential ownership includes: • CRM state and ownership logic • Authentication, RBAC, and permissions • Quote and order integrity • Referral and commission attribution • Payment webhooks and reconciliation • APIs and integrations • Audit trails and observability • Idempotency and transactional integrity • Securit...

    $634 Average bid
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    332 bids

    I’m planning to roll out a small-footprint Identity and Access Management editor that my clients can use to create, view, and adjust their own policies without touching the underlying infrastructure. At its core the tool should let an administrator sign in, browse existing users and groups, and then add, change, or revoke permissions through an intuitive interface. Although I have not finalised the target environment yet, I want the architecture to stay flexible enough to plug into common cloud stacks such as AWS, Azure, or Google Cloud later on. If you already have presets or libraries that handle role definitions, access-control statements, or audit logs for any of those platforms, feel free to mention them in your approach. The deliverable I’m looking for is a working ...

    $361 / hr Average bid
    $361 / hr Avg Bid
    15 bids
    Secure Ubuntu Droplet & SSL
    6 days left
    Verified

    I need my Ubuntu droplet on DigitalOcean fully hardened and served behind Cloudflare SSL. Your first task is to configure Cloudflare so the site loads over HTTPS without warnings; Full or Full (Strict) is fine as long as it’s end-to-end encrypted. Once SSL is sorted, lock the server down. SSH is the only exposed service, so it must be bullet-proof: key-only logins, non-standard port (if practical), root login disabled, fail2ban (or similar) in place, and an automatic e-mail that alerts me—showing IP, user, date, and time—every time someone successfully authenticates. Complement that with: • UFW/iptables rules limiting inbound traffic to the essential ports. • Unattended security updates. • Log rotation and basic integrity checks (e.g., Lynis report or equ...

    $35 Average bid
    $35 Avg Bid
    26 bids

    Build a secure web-based background verification platform Like Verify24x7 that allows an authorized user or organization to request a person's court/criminal-record verification. The platform should search available lawful court/public-record sources, identify potentially matching records, verify the identity match using the information provided by the requester, and generate a clear verification report. The system must distinguish between: - No matching court record found - Case found / pending - Case disposed - Acquittal/discharge where available - Conviction where officially recorded - Record requiring manual review - Unable to verify The application must never automatically label a person as a criminal merely because a case/FIR/complaint appears in a database.

    $135 Average bid
    $135 Avg Bid
    50 bids

    WordPress Website Developer + SEO Expert Required We are looking for an experienced WordPress developer with strong SEO and UI/UX skills to build a professional corporate website of approximately 40 pages. Project Requirements WordPress website – approx. 40 pages Modern, clean & professional corporate design Fully responsive — mobile, tablet & desktop High-quality, clean & optimized coding Professional animations and interactive elements without affecting speed On-page SEO for all important pages Technical SEO & website speed optimization Keyword research and complete keyword planning SEO strategy focused on improving Google search rankings Knowledge of AI search / AI answer engines and optimization for platforms such as Google AI Overviews and other AI sear...

    $159 Average bid
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    128 bids

    I need my existing website rebuilt from the ground up so it mirrors the current content and structure yet outperforms it in search rankings. The copy, images and overall page count will stay the same, but every template and asset must be refreshed into a modern-looking, fully responsive layout with a noticeably smoother user interface. Throughout the rebuild, on-page SEO is the main driver. Clean code hierarchy, fast load times, schema markup, accessible HTML5/CSS3, and well-structured meta data all need to be baked in from day one so rankings can climb the moment we flip the switch. Google Search Console and Analytics integration should be part of the launch checklist. Security comes right after SEO. The finished site must safeguard user privacy, protect any stored data, and include...

    $571 Average bid
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    426 bids

    I need a full-featured matrimonial site tailored to one specific state. The core flow is straightforward: visitors register, their photo is cleared through automated verification software, they pay a yearly membership fee, and they can then search for matches using an extensive set of filters. Key functions to build • Registration with e-mail / mobile OTP, automated photo authentication, and an admin queue for any doubtful images. • Secure payment gateway that charges a single, renewable yearly fee and records all invoices in the admin panel. • Powerful search: caste, tribe, religion (these are non-negotiable), spoken language, mother tongue, education, occupation, siblings, physical measurements, present and permanent addresses, marital status, and medical history. R...

    $393 Average bid
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    147 bids

    Backend development for ShineU Analytics — a serverless AWS solution enabling parents to manage students, upload academic reports, and generate AI‑powered performance insights. Scope of Work Authentication: Secure JWT‑based login, registration, password management. Parent & Student Management: CRUD APIs for parent profiles and student records. Report Management: Secure file uploads (PDF, Excel, images) via presigned S3 URLs, metadata storage, selection/deselection of reports. AI Analytics: Python service for document extraction, OCR, normalization, and AI‑driven analysis (strengths, weaknesses, trends, recommendations). Generated Reports: Asynchronous report generation using SQS, save/view/delete reports. Dashboard APIs: Latest saved report, quick insights, performance tren...

    $105 Average bid
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    44 bids

    I'm seeking an experienced freelancer to help recover $1100 worth of stolen wallet funds on Steam. Key Requirements: - Proven track record in recovering stolen funds or assets - Familiarity with Steam's security protocols and recovery processes - Strong analytical and problem-solving skills - Ability to provide references or detailed past work Please include any relevant experience in your application.

    $281 Average bid
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    11 bids

    Senior Full-Stack Developer — Private Enterprise Messaging Platform We are seeking an experienced developer/small team to build a secure, web-first internal communication platform for 10–100 users, inspired by WhatsApp/Discord but not a clone. Core Requirements • Admin-controlled registration using unique invitation/registration codes • Email-based accounts; no phone number required • Unique username-based search only; users must not be discoverable by name/email/phone • Restricted profiles showing only approved information • Real-time 1-to-1 messaging, file sharing, audio/video calling • Granular per-user permissions for messaging, calling, files, groups, etc. • Admin control over users, sessions, access, logging and security monitoring &bull...

    $405 Average bid
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    237 bids

    FinTech Mobile App — Development Project Overview We are looking for an experienced mobile app developer or small development team to help us build the of a new FinTech product. This is a serious startup project, and we are looking for someone who can work carefully with financial functionality, security, APIs, and a modern mobile UI. Important: Due to the confidential nature of the product, the public project description intentionally does not disclose the complete business model or proprietary financial mechanism. Detailed product specifications will be shared with the selected developer after an NDA/confidentiality agreement. What We Need We need a developer to build the technical foundation for a modern financial mobile application, including: * Modern mobile UI/UX * User ...

    $11 / hr Average bid
    $11 / hr Avg Bid
    253 bids

    I need a concise, practical set of coding rules that zero in on secure-by-design practices. The end product should read like an internal standard any developer on my team can pick up and apply immediately, regardless of project size or framework. What matters most to me is clarity and real-world applicability: guidelines that flag common attack surfaces, prescribe safe patterns, and illustrate both “do” and “don’t” examples. Feel free to draw on OWASP, MITRE, or other respected references if they strengthen the reasoning, but every rule must be expressed in my own organisation’s plain language so it slots straight into a living style guide. Deliverables • A structured rules document (Markdown or Google Doc) covering secure coding practices from ...

    $11 / hr Average bid
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    58 bids

    1. Looking For: - Fractional CTO / Senior Solutions Architect – Technical Planning for Saudi Technology Startup 2. Project Description: - I am building a technology company in Saudi Arabia and need an experienced Fractional CTO / Senior Solutions Architect to design the company’s technical foundation from the ground up. - The goal is to determine what technical services the company should offer, how those services should be structured and delivered, what technical roles and technologies are required, and how technical risks should be managed. - The company will initially use a contractor/freelancer-based delivery model and focus mainly on software and digital services. Hardware supply or installation is not planned at the startup stage. - The consultant should be capable ...

    $667 Average bid
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    113 bids

    We are seeking an experienced freelance developer or development team to create Electronic Health Record (EHR) and Appointment Scheduling software. The goal is to implement a responsive web or desktop platform that is intuitive, secure, and efficient for daily use by healthcare professionals. Key functionalities include: Patient Management for registering, editing, and searching personal data, contact information, and medical history; an Electronic Health Record module for uploading medical progress notes, diagnoses, prescriptions, and consultation notes; a Files and Documents module for uploading and storing clinical analyses, studies, and images (PDF, JPG, PNG) directly linked to the patient's record; and an Appointment Scheduling System with an interactive calendar for assigning, c...

    $265 Average bid
    $265 Avg Bid
    391 bids

    We are looking for an experienced full-stack developer or development team to build a production-ready e-commerce platform with a unique Sales Partner system. This is NOT a standard e-commerce website. The initial products will be physical products such as watches, but the system must be configurable so products, categories, prices, stock and commission structures can be changed easily from the admin panel. The platform will have separate interfaces and permissions for Customers, Sales Partners, Admin, Finance Staff, IT Staff, Stock Keepers and Delivery Staff. We are open to technology recommendations. Please propose the most suitable, secure and maintainable architecture for this project. 1. E-COMMERCE * Homepage, categories and product listing * Product search/filter * Product deta...

    $1660 Average bid
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    160 bids

    I’m looking for a fresh, expert set of eyes on my already-launched SaaS. The priority is a thorough check of both Security and Performance. I’ll share the exact tooling, checklists, and testing methodologies I currently use so you can step straight into the review process without guessing which scanners, profilers, or penetration-testing suites to run. Here’s how I see the engagement unfolding: you explore every security layer—from authentication flow to data storage—and benchmark performance under realistic load. When you’re done, I’d like a concise report that highlights the key findings, high-impact risks, and the quick wins that will give me the most immediate improvement. No need for a long-form narrative or slide deck; a sharply written summ...

    $212 Average bid
    $212 Avg Bid
    65 bids

    I need a secure, clinician-facing web application that lets authorised prescribers create a digital prescription, apply a legally valid electronic signature, and transmit the order straight to my GPhC-registered pharmacy for tracked-courier fulfilment. Primary users will be general practitioners and independent prescribers, who need to create an account and have their licence verified before being able to prescribe. The flow should be simple—search or add a patient, create a prescription, sign, and click “send”. Behind the scenes the platform should store an immutable audit trail, maintain patient records, and push the signed prescription to the pharmacy via secure API (FHIR, HL7 or a custom JSON schema—happy to discuss the best fit). Key requirements • Dig...

    $2124 Average bid
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    364 bids

    We are looking for an experienced Full-Stack Web Developer to build a digital Expert Pool platform for our Swiss healthcare company. The purpose of the platform is to manage a flexible pool of qualified healthcare professionals who can accept individual assignments when additional capacity is required. We want to replace manual coordination through phone calls, WhatsApp messages, spreadsheets and separate availability lists with one simple, modern and efficient web platform. The platform will have two main areas: 1. Administration Portal - Manage healthcare professionals / Pool Partners - Profiles, qualifications and permitted activities - Availability and working regions - Create one-time and recurring assignments - Intelligent search and matching of suitable professionals - Send assi...

    $1551 Average bid
    $1551 Avg Bid
    504 bids

    About the project We are building, a legal practice management platform designed specifically for small UK law firms. The product has been founder-built and has now developed into a substantial application. It is already well beyond prototype stage, but it has reached the point where I want an experienced senior engineer to review the architecture, challenge previous decisions, identify technical risks and help establish a maintainable engineering direction. This is not a greenfield project and I am not looking for someone to rewrite the application from scratch. I am looking for someone who is particularly good at inheriting existing systems, understanding them quickly and deciding what should be kept, simplified, improved, removed or deferred. Current technology The application is ...

    $885 Average bid
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    231 bids

    Financial Literacy & Lead-Generation App — Project Description Overview We are building a mobile-friendly application for a bank that helps everyday users understand insurance products and other financial instruments (savings, investment, and protection products) in a simple, friendly, and multilingual way. The app is educational and lead-focused: users learn about products, get their questions answered by an AI assistant, and can submit an enquiry that is routed to the bank's sales/agent team for follow-up. This is a non-transactional platform — no purchases, payments, or account opening in this phase. Goal Improve financial literacy, present the bank's products in an accessible format, and generate qualified leads — while giving the bank full control to ...

    $3812 Average bid
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    52 bids

    I need architect advice for a no-code/configurable enterprise SaaS currently under development. It will have multiple modules, with each module purchased separately. Please advise on: 1. Multi-tenancy: Should we use Hybrid Multi-Tenant architecture? Compare shared DB/schema, separate schema, separate DB and hybrid approaches considering GxP, security, scalability, performance and cost. 2. Customer/Site model: A corporate customer may have 10+ branches/sites, each with different electronic processes. Should the hierarchy be Customer → Sites → Modules → Processes → Users? Should sites be separate tenants, sub-tenants or part of one tenant? 3. Environments & DB: Each customer may require DEV, VALIDATION and PROD. For a customer with 10+ sites: - How many DBs are r...

    $44 Average bid
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    5 bids

    MVP Build — Quote Request We're looking for a freelance developer or small team to quote an initial MVP build. This is a rough-scope request to get a ballpark quote — not a full technical spec. Additional phases/tiers will be scoped separately once we're underway. What we're building (high level) A web platform that connects to third-party business software a client already uses (accounting/ERP-type systems, CRM/marketing platforms, etc.), pulls their data into a secure cloud environment, and gives the client a simple portal to log in and view/query that data — including an AI-assisted question-answering feature over their own data. Core skills required Backend development (Node.js/Express or equivalent) — building and hardening API routes, workin...

    $627 Average bid
    $627 Avg Bid
    186 bids

    Paid pre-tender collaboration for a U.S.-based nonprofit WordPress partner, with a larger award-contingent workstream. TinyOps Studio LLC is preparing a proposal for Sepsis Alliance, a U.S. nonprofit. The public RFP covers a $40,000 to $60,000 redesign of , due 16 August 2026. The current WordPress site includes 258 published pages, 8,159 media items, and 2,307 Faces of Sepsis stories. The work includes content inventory and migration, accessibility, SEO and AI discoverability, integrations, performance, security, and staff-ready administration. The selected bidder will be hired through Freelancer, within this listing's $30 to $250 budget, for a focused pre-tender package: - review the public RFP and TinyOps proposal draft - provide a concise firm profile and key team bios - provide...

    $184 Average bid
    $184 Avg Bid
    157 bids

    Job Title: End-to-End E-commerce Website Development for Hardware Equipment Store Category: Web Development / E-commerce Project Overview: We're looking for an experienced full-stack developer or agency to build a complete e-commerce website for selling hardware equipment (tools, machinery, industrial/construction hardware, etc.). The platform should be fully functional, secure, and ready for real customer transactions from day one. Scope of Work: 1. Core E-commerce Platform Product catalog with categories, subcategories, filters (brand, price, specifications, etc.) Product detail pages with images, descriptions, specs, and stock availability Search functionality with autocomplete/suggestions Shopping cart and wishlist User registration/login (email, phone OTP, and/or social logi...

    $809 Average bid
    $809 Avg Bid
    62 bids

    Job Title: End-to-End E-commerce Website Development for Hardware Equipment Store Category: Web Development / E-commerce Project Overview: We're looking for an experienced full-stack developer or agency to build a complete e-commerce website for selling hardware equipment (tools, machinery, industrial/construction hardware, etc.). The platform should be fully functional, secure, and ready for real customer transactions from day one. Scope of Work: 1. Core E-commerce Platform Product catalog with categories, subcategories, filters (brand, price, specifications, etc.) Product detail pages with images, descriptions, specs, and stock availability Search functionality with autocomplete/suggestions Shopping cart and wishlist User registration/login (email, phone OTP, and/or social logi...

    $779 Average bid
    $779 Avg Bid
    75 bids

    I need a robust desktop application that mirrors PlanSwift’s core strength—fast, accurate on-screen takeoffs paired with instant cost calculations—while running natively on both Windows and Mac. Core scope • Upload architectural drawings in PDF, TIFF, or common CAD formats. • Let users set the plan scale, then measure counts, linear runs, areas, and volumes with click-and-drag tools. • Each measured item should drop straight into an estimating worksheet where labour, material, and markup values can be edited on the fly. • Calculations must refresh in real time, and the finished estimate should export cleanly to Excel or CSV. User experience I’m after a professional, detail-rich interface: dockable panels, layered plan view, colour...

    $3910 Average bid
    $3910 Avg Bid
    180 bids

    # eChampz — Senior Full-Stack Developer (Fiverr brief, v2) > Paste each block into the matching Fiverr field. Notes to Ahmed are in `>` blocks and must be deleted before posting. --- ## ABOUT THE CLIENT The client operates a gaming and esports marketplace serving Saudi Arabia and the wider GCC. The platform connects gamers, talent scouts, studios, teams, and brands. The founder is hiring a senior developer to take technical ownership of the codebase while the founder leads the business. --- ## THE ROLE We need a Senior Full-Stack Developer to take technical ownership of an established React and PostgreSQL platform currently in closed beta and moving toward public launch. This is a six-month engagement structured in three stages: a paid scoped trial, a defined first mile...

    $44 / hr Average bid
    $44 / hr Avg Bid
    188 bids

    I need help with my laptop to check and delete unauthorized access. Ideal skills and experience: - Experience with security and access management - Familiarity with various operating systems - Ability to work efficiently and securely

    $212 Average bid
    $212 Avg Bid
    41 bids
    Plivo Account Setup With Email
    5 hours left
    Verified

    My existing Plivo account is locked and every attempt to register a fresh one—whether with Gmail or another address—has been rejected automatically. I need a working, fully-verified Plivo account plus the email inbox that is tied to it, so I can manage both credentials myself. What I tried: I already attempted registering with a non-Gmail address and Plivo still denied the signup, so the usual work-arounds are exhausted on my side. Here’s what I need from you: • Create a brand-new Plivo account that passes Plivo’s phone/SMS and email verification steps. • Register it with an email service that reliably receives Plivo messages (any reputable provider is fine as long as it works). • Hand over the login credentials for both Plivo and the new emai...

    $27 Average bid
    $27 Avg Bid
    32 bids

    A higher-education institution is seeking a delivery partner for two related workstreams on an internally-hosted AI chat platform used by its staff and researchers. The work is fixed-price and milestone-based, run with weekly working sessions and a review at each milestone gate. Workstream 1 — Security assessment and hardening An independent assessment of the platform, carried out with and reviewed by the client's internal security team, supporting a decision to allow the platform to handle sensitive institutional data. The work covers threat modelling and data-flow documentation, review of identity, access and sharing controls, tooling and egress risk, session and administrative access, and the platform's position relative to the organisation's existing compliance b...

    $35168 Average bid
    $35168 Avg Bid
    79 bids

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