Senior Fullstack Engineer (AI App Builder)

TL;DR

Senior Fullstack Engineer (AI App Builder): Building an AI platform that allows anyone to create functional applications through natural interaction with AI with an accent on architecture, interface, and AI integration layer. Focus on shaping the product's direction and driving the team toward scalable solutions.

Location: Fully Remote

Salary: to be discussed

Company

Our client is building an AI App Builder — a platform that allows anyone to create functional applications through natural interaction with AI.

What you will do

• Lead the design and development of core platform features from concept to production.
• Define technical architecture for frontend and backend systems, ensuring scalability and stability.
• Collaborate with AI engineers and product designers to turn ideas into user-ready functionality.
• Take ownership of engineering quality, process efficiency, and release cadence.
• Mentor and guide other developers; participate in technical decision-making and planning.
• Continuously improve system performance, UX, and developer workflows.

Requirements

• 5+ years of professional experience as a Full-Stack Engineer or Tech Lead.
• Expertise in React / Next.js / Vue, TypeScript, and Node.js.
• Strong understanding of API architecture, databases, and modern development tooling.
• Experience working with serverless / edge environments (Cloudflare Workers, AWS Lambda, etc.).
• Practical exposure to AI-driven products (builders, agents, generative apps, etc.) — even up to one year is valuable.
• Preference for Russian-speaking engineers with experience in Western AI products
• Experience building fast-moving products from scratch in startup environments.

Nice to have

• Familiarity with LLM APIs (OpenAI, Anthropic, Mistral, etc.).
• Experience with Supabase, Docker, AWS, Vercel, or Cloudflare AI.
• Background in real-time collaboration, Web IDEs, or AI agent architectures.

Culture & Benefits

• Build at the edge of AI innovation – creating tools that help others build with AI.
• Influence not just the codebase but the entire direction of the product and engineering team.
• Work in a lean, ambitious environment with full autonomy and real impact.
• Become part of the core leadership group shaping a platform designed to redefine how software is created.