Freelance Full Stack Jobs

Improve the path from account creation to a working AI agent by finding where new users struggle and building measurable fixes. This role combines frontend focused full stack engi…

Build and maintain web applications and services as a senior full stack engineer, working across .NET back-end systems and TypeScript front ends. The role combines hands-on delive…

Lead the design and delivery of production agentic AI and intelligent automation for enterprise technology operations and cybersecurity. The work spans full-stack engineering, AI…

Take ownership of application security for an AI-powered consumer platform, working directly with product engineers to find and resolve weaknesses in the web application. This is…

Lead application security for an AI-powered consumer product, focusing on practical code review, vulnerability discovery, and remediation across the web application. You’ll work w…

Own hands-on application security for an AI-powered consumer platform, helping teams find, understand, and fix vulnerabilities throughout the web application. You’ll set security…

Own hands-on application security for a widely used AI companionship product, finding meaningful vulnerabilities in code and driving remediation across the application stack. As t…

Own hands-on application security for a widely used AI companionship product, finding meaningful vulnerabilities in code and driving remediation across the application stack. As t…

Evaluate and improve advanced language models by applying software engineering expertise and fluency in French. The work focuses on testing technical reasoning in realistic coding…

Own application security for a growing AI powered web product, working hands on across code review, vulnerability discovery, and remediation. You will set priorities and guide sec…

Own application security for an AI-powered consumer platform, working hands-on across its web application code. You’ll identify and prioritize vulnerabilities, guide engineers thr…

Own application security for a growing AI powered web product, working hands on across code review, vulnerability discovery, and remediation. You will set priorities and guide sec…

Help improve advanced language models by testing their software engineering knowledge in German. You will use coding expertise to assess technical correctness and reasoning, evalu…

Evaluate AI-generated software work across frontend and backend development, using your full stack experience to judge code quality and architectural choices. You’ll identify erro…

Own application security for a growing AI powered web product, working hands on across code review, vulnerability discovery, and remediation. You will set priorities and guide sec…

Use software engineering expertise and Latin American Spanish fluency to evaluate and improve AI responses to coding tasks. You’ll examine technical problem solving in Spanish, ch…

Create and assess realistic software engineering exercises for a part-time, remote consulting engagement. The work focuses on backend and full-stack scenarios, including bug fixes…

Create and assess realistic software engineering exercises for a part-time, remote consulting engagement. The work focuses on backend and full-stack scenarios, including bug fixes…

Create and assess realistic software engineering exercises for a part-time, remote consulting engagement. The work focuses on backend and full-stack scenarios, including bug fixes…

Create and assess realistic software engineering exercises for a remote, part-time project engagement. The work spans backend and full-stack scenarios, from fixing bugs and implem…

Create and assess realistic software engineering exercises for a part-time, remote consulting engagement. The work focuses on backend and full-stack scenarios, including bug fixes…

Create and assess realistic software engineering tasks for project-based expert evaluation work. Assignments cover backend and full-stack scenarios such as bug fixes, feature deve…

Build and improve backend services and integrations for a long-term delivery engagement supporting an insurance client. The work connects customer and case-management systems, dat…

Join an early engineering team building AI-enabled recruiting and workflow products for enterprise, federal, and regulated customers. Working directly with company founders, you’l…

Build and maintain the web experiences and integrations that support marketing campaigns, lead generation, and analytics. This hands-on contract role owns assigned work from imple…

This post-sales engineering role owns the technical path from a customer’s signed agreement through deployment, active use, and measurable value. You’ll build and integrate produc…

Lead full-stack development for responsive business applications supporting a large government user community. You will deliver features across web interfaces, secure services, an…

As a Tier 2 Technical Support Agent, you will investigate complex escalations for enterprise software customers, covering issues that require deeper analysis than first-line suppo…

Build and support full stack enterprise applications for legal operations, matter and document management, and regulatory processes. The work spans user interfaces, backend servic…

Lead the engineering work that adapts software for enterprise customers, balancing urgent deal needs with product priorities and long-term maintainability. You’ll manage and devel…

Own software features from technical kickoff through release, translating validated product problems, prototypes, and specifications into architecture, implementation plans, and v…

Build and operate enterprise workflow and role-based applications across the full stack. You will contribute to frontend interfaces, backend services, APIs, cloud deployment, and…

Remote technology role with responsibilities and requirements described in the listing. Responsibilities The original listing contains the role-specific day-to-day scope. Requirem…

Remote technology role with responsibilities and requirements described in the listing. Responsibilities The original listing contains the role-specific day-to-day scope. Requirem…

Build and refine AI agents that help businesses handle customer questions, appointments, support, and online services. You’ll use AI-assisted development tools to create working p…

Work across engineering and customer engagements to turn complex business needs into working integrations, AI workflows, and lasting product capabilities. You’ll lead technical di…

Build and maintain customer-facing subscription product features across a TypeScript application, from initial requirements through production release and follow-up. You’ll work a…

Own customer-facing product areas from early planning through production for software that helps government and industry teams work with public-sector contracting data. The role c…

Lead a strategic initiative to build consumer shopping products that help people track deals and price changes. You’ll shape the problem with business stakeholders, then own the p…

Deliver full-stack features for a part-time product project that uses AI to analyze events in video. You will work directly with the project’s technical lead in a shared codebase,…

Design and deliver web and mobile applications across the full development cycle, from data modeling and technical planning to interfaces, testing, and release. You will build bus…

Create bespoke websites using WordPress’s native block editor, building custom themes and blocks that are maintainable, fast, and straightforward for clients to edit. The work inc…

Lead hands-on development of applications, APIs, and integrations that support pricing and commercial workflows in a wholesale and distribution environment. Partner with product,…

Help assess and improve AI coding systems by creating realistic full-stack software tasks, evaluating generated implementations, and producing professional reference solutions. Th…

Remote technology role with responsibilities and requirements described in the listing. Responsibilities The original listing contains the role-specific day-to-day scope. Requirem…

Remote technology role with responsibilities and requirements described in the listing. Responsibilities The original listing contains the role-specific day-to-day scope. Requirem…

Build and maintain full-stack services that connect customer-management and data platforms with legacy financial systems. The work includes strengthening an asynchronous client du…

Build and run experiments, automation, and AI agents that help marketing and sales generate measurable growth. This is a hands-on engineering role: you’ll turn commercial ideas in…