Senior Full Stack Developer (TypeScript / Node.js / React / AI)
First seen by Alion on Oct 31, 2026.
We are looking for an experienced Senior Full Stack Developer with a strong backend focus, deep expertise in TypeScript and Node.js, solid hands-on experience with React, and practical experience building AI-powered applications.
The ideal candidate is a backend-oriented full-stack engineer who can design scalable backend systems, develop APIs and integrations, and contribute to frontend development using React.
Key Responsibilities
Design, develop, and maintain scalable backend services using TypeScript and Node.js.
Build and optimize REST APIs, business logic, and third-party integrations.
Develop and maintain frontend features using React and TypeScript.
Design reliable, secure, and maintainable application architectures.
Integrate AI/LLM services such as OpenAI, Anthropic, or Azure OpenAI.
Build AI-powered features, intelligent workflows, and backend integrations.
Work with databases, asynchronous processing, and application performance optimization.
Collaborate with the team on technical decisions, code reviews, and architecture improvements.
Take ownership of features from design to production.
Required Skills
5+ years of professional software development experience.
Strong TypeScript and Node.js expertise, with a primary focus on backend development.
Solid hands-on experience with React and modern frontend development.
Strong experience designing and building backend APIs, services, and integrations.
Practical experience with AI/LLM integrations (OpenAI, Anthropic, Azure OpenAI, or similar).
Experience with SQL or NoSQL databases.
Good understanding of asynchronous programming, authentication, scalability, and software architecture.
Experience delivering production-ready full-stack applications.
Ability to work independently and take ownership of technical solutions.
Nice to Have
Experience with Next.js.
Experience with NestJS, Express, or Fastify.
Knowledge of LangChain, Vercel AI SDK, or LlamaIndex.
Experience with RAG, AI agents, embeddings, or vector databases.
Familiarity with Python-based AI services.
Experience with cloud platforms, Docker, and CI/CD pipelines.
Ideal Candidate
A senior full-stack engineer with a backend-first mindset, strong TypeScript/Node.js expertise, solid React experience, and proven experience integrating AI/LLM capabilities into real-world applications.
The role involves both backend and frontend development, with the primary focus on backend architecture, services, APIs, and AI integrations.
Project Details
Location: 100% Remote
Engagement: Full-time
Start: ASAP
Duration: To be confirmed
Interview Process: Fast-track