About the Position

Xebia is a global AI-first, digital transformation, and engineering partner. With over 25 years of experience and a team of 5,000 professionals across 16 countries, we help organizations design and build scalable products, platforms, and data-driven solutions.

We specialize in Artificial Intelligence, Data and Cloud, Intelligent Automation, and Digital Products, combining deep technical expertise with a strong focus on engineering excellence and a people-first culture.

In the CEE region, we’re a team of nearly 1,000 experts delivering modern applications, data platforms, and AI solutions for clients such as McLaren, Aviva, Deloitte, Spotify, Disney, ING, UPS, Tesco, Truecaller, AllSaints, Volotea, Schmitz Cargobull, Allegro, InPost, and many, many more. We work with leading technologies including AWS, Azure, GCP, Databricks, and Snowflake, and combine strong engineering culture with a consulting mindset and a continuous focus on growth and knowledge sharing.

Join a small, tight-knit product team building an AI-powered, autonomous accounting platform for the smallest businesses and the accountants who serve them.

You'll own features end-to-end - from an idea in a conversation, through the API and data model, to what the customer actually sees and trusts. A core part of the work is building AI agents and the tools and workflows around them, in a product that's live in production, not a pilot. This is a Senior-level role.

Responsibilities

Build and improve the product experiences small business owners and accountants use every day
Develop backend services and integrations with the systems accounting runs on
Design and ship reliable AI-powered workflows (LLM APIs, tool calling, streaming, agent flows) where "usually right" is not good enough
Improve reliability and performance, and keep the codebase a good place to work
Work closely with product, engineering, and domain experts to take ideas all the way to customers

Requirements

Minimum 6 years of commercial experience in fullstack software development
Backend: Node.js + Express, strong command of TypeScript
Frontend: React and Next.js (SSR/SSG, App Router)
Designing and building REST APIs (GraphQL a plus)
PostgreSQL - data modeling and query optimization
Testing: unit and integration tests (e.g. Jest/Vitest)
CI/CD and containerization (Docker)
Experience with the cloud (AWS / GCP / Azure)
Hands-on AI/LLM production experience: LLM APIs, tool calling, streaming, prompting, or agent workflows
AI-native: daily work with AI development tools (e.g. Cursor, GitHub Copilot, Claude Code)
Ability to verify, debug, and refactor AI-generated code

Nice to Have

Experience with NoSQL databases (e.g. MongoDB, Redis)
Building AI features: RAG, embeddings, prompt engineering, agents
End-to-end testing (Playwright / Cypress)
Microservices architecture and monorepo experience (Nx / Turborepo)
Cloud certifications (AWS/GCP/Azure)
ORM familiarity (e.g. Prisma, TypeORM)

Recruitment Process

CV review – HR call – Interview – Client Interview – Decision

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Senior Full-stack Developer (AI-Native)

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