Full-Stack Engineer

Jobs for Humanity

Remote· senior

This is a senior full-stack role at an early-stage company, which means real ownership and fast iteration. You'll ship a real product, not maintain legacy code. If you want to see your work live quickly and learn by doing, this is the environment for it.

You'll own both the frontend and backend of the web application. That includes building the user interface in React, designing APIs and databases, handling authentication and data persistence, and integrating AI services into the product. You'll also work on real-time conversational features using WebSockets or Server-Sent Events. The scope is broad, which is the point—you'll touch the full stack and understand how pieces fit together.

This role expects 4+ years of full-stack experience and strong TypeScript or JavaScript skills. You should be comfortable with React on the frontend and have solid backend fundamentals. A portfolio of shipped work helps. You'll move fast in an undefined environment, so you need to balance shipping quickly with writing code you won't regret.

Ready to apply. Head to CareerJumpship.com, search this role, and submit your resume and a link to your portfolio or GitHub. Include a note about why early-stage product work appeals to you.

About this role

About the Role We're looking for a Full-Stack Engineer to build our web application end-to-end and bring the MVP to life. You'll own the user-facing product and the backend that supports it, working closely with the AI Engineer to weave intelligent, real-time AI interactions into a smooth, reliable experience. What You'll Do Build and ship the web application across frontend and backend, from UI components to APIs and data models Design and implement a responsive, real-time conversational interface (React, WebSockets/SSE) Develop backend services: authentication, session management, data persistence, and third-party integrations Integrate AI and multi-agent services into the product in partnership with the AI Engineer Design and maintain databases and API contracts that scale with product complexity Own performance, reliability, and security across the stack Translate product and design requirements into well-tested, maintainable features Move fast in an early-stage environment, balancing speed with quality 4+ years of full-stack software engineering experience Strong proficiency in TypeScript/JavaScript and a modern frontend framework (React preferred) Solid backend experience (Node.js, Python, or similar) building and consuming APIs Experience designing relational and/or NoSQL data models (PostgreSQL, MongoDB, etc.) Familiarity with real-time communication patterns (WebSockets, SSE) and streaming UIs Understanding of authentication, authorization, and secure data handling Experience integrating third-party APIs, ideally including LLM or AI services Comfort owning features end-to-end with minimal oversight Experience building with LLM APIs or AI-powered product features Familiarity with cloud platforms (AWS/GCP/Azure) and CI/CD pipelines Knowledge of caching, queuing, and background job processing Prior early-stage startup or 0-to-1 product experience Originally posted on Himalayas

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