Cosmoxyn
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// join us

Build the future with us.

We're a small AI-native studio shipping production software for founders worldwide. If you want your work to matter from week one, keep reading.

// why cosmoxyn

Why work here.

Real ownership
Ten people, no layers. You own features end to end — schema to UI — and see them ship to real clients in days, not quarters.
AI-native tooling
We build with the tools we sell. You will work with LLM APIs, RAG pipelines, and agents as everyday materials, not side projects.
Direct client exposure
No PM relay. You talk to the founders whose products you are building — requirements, demos, feedback, all first-hand.
Ship weekly, learn fast
Fixed-scope projects in 1–5 week cycles. You will touch more stacks and domains in a year than most engineers do in five.
// open roles

Open roles.

Full Stack Engineer

Full-time · Hybrid · Ahmedabad, Gujarat, India · 0–3 years experience

We're looking for a Full Stack Engineer who is comfortable owning features end to end — from database schema to polished UI. You'll work across multiple client projects, building web applications with React/Next.js on the front end and Node.js on the back end, often integrating AI capabilities (LLM APIs, RAG pipelines, automation workflows) along the way.

What you'll do
  • Design, build, and ship full stack features across client projects using Next.js, React, and Node.js
  • Build and consume REST/GraphQL APIs; model data in SQL (MySQL/Postgres) and NoSQL databases
  • Integrate third-party services and AI APIs (OpenAI, Anthropic, AWS Bedrock) into production applications
  • Deploy and maintain applications on AWS (EC2, S3, Lambda, RDS); write clean CI/CD pipelines
  • Collaborate directly with clients and internal stakeholders to translate requirements into technical solutions
  • Write maintainable, well-tested code and participate in code reviews
  • Contribute to architecture decisions and technical estimates for new engagements
What we're looking for
  • 0–3 years of professional full stack development experience
  • Strong proficiency in JavaScript/TypeScript, React, and Node.js
  • Hands-on experience with Next.js (App Router preferred) and modern frontend tooling
  • Solid understanding of relational databases, API design, and authentication patterns
  • Experience deploying and operating applications on AWS or similar cloud platforms
  • Ability to work independently, manage priorities across projects, and communicate clearly in English
  • A pragmatic, product-minded approach — you care about shipping value, not just writing code
Nice to have
  • Experience integrating LLM APIs, building RAG systems, or working with vector databases
  • Familiarity with Python for scripting or ML workflows
  • Exposure to Docker, serverless architectures, or infrastructure-as-code
  • Prior agency or client-facing consulting experience
  • Open-source contributions or a portfolio of shipped side projects
Apply via Email View on LinkedIn

No opening that fits? We still want to hear from you — tell us what you'd build with us.

career@cosmoxyn.com