Note: The job is a remote job and is open to candidates in USA. Concentrate AI provides an OpenAI-compatible API to manage models across leading AI providers. They are seeking a Full-Stack Software Engineer who will own features end-to-end, working across the stack to build customer-facing products and internal tools.

Responsibilities

• Design and implement full-stack features using modern TypeScript across the frontend and backend
• Architect, build, and maintain robust RESTful APIs with proper authentication, validation, and error handling
• Maintain high engineering standards through comprehensive testing, including unit, integration, and end-to-end tests
• Containerize and deploy services using Docker and CI/CD pipelines
• Collaborate closely with the founding team on product direction, architecture, and technical strategy
• Contribute to scalable, maintainable system architecture in a fast-moving startup environment

Skills

• 2+ years of experience
• Strong proficiency with TypeScript and Node.js
• Experience building production-grade frontends with React; Next.js preferred
• Familiarity with modern frontend tooling, such as Tailwind and component libraries
• Backend development experience with frameworks like Fastify or similar
• Solid understanding of PostgreSQL, including schema design and query performance
• Familiarity with Docker, CI/CD workflows, and cloud deployment environments
• Experience implementing secure authentication flows, such as JWT or OAuth
• Strong testing discipline — you write tests as part of building features, not after the fact
• Experience with type-safe ORMs such as Kysely, Drizzle, or similar
• Knowledge of Redis for caching and performance optimization
• Comfort with Nginx configuration, reverse proxies, and SSL/TLS setup
• Experience with monorepo tooling such as Turborepo or Nx
• Prior work on SaaS platforms or multi-tenant architectures

Benefits

• Early-stage equity
• The opportunity to influence both our product and culture

Company Overview