Lead FullStack Engineer; AI

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 Millennium, ING, Play, Edenred, Arabian Drilling, Fed Ex, Leroy Merlin, Truecaller, Volotea, Schmitz Cargobull, 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.

We are looking for a hands-on Technical Lead who combines strong software engineering skills with technical leadership, staying actively involved in writing production code while guiding a high-performing team of engineers.

You will be building modern, cloud-native digital products in the financial services sector, including AI-powered features such as conversational voice and chat experiences. Working in fast-paced, agile delivery teams, you will collaborate closely with product, design and consulting partners to deliver scalable, high-quality solutions.

This role combines hands-on development, architectural ownership and team leadership. You will be responsible for driving technical decisions, setting engineering standards and ensuring efficient delivery while remaining actively involved in complex frontend, backend and AI integration work.

• the role involves working closely with a US-based client, requiring availability until 6:00 PM CET daily and until 9:00 PM CET twice a week to accommodate collaboration across time zones,
• developing complex frontend, backend and AI integrations while leading by example through hands-on coding,
• designing and implementing technical solutions within a domain-driven architecture, including APIs and event-driven integrations,
• leading the development of AI-powered features using Claude, AWS Bedrock and Lang Graph, including orchestration, guardrails and evaluation,
• collaborating with designers to translate Figma designs into pixel-accurate, accessible user interfaces,
• establishing engineering standards for code reviews, testing and AI-assisted development,
• driving CI/CD pipelines using Git Hub Actions and infrastructure as code using AWS CDK,
• implementing and maintaining automated testing practices across unit, integration and end-to-end testing,
• mentoring engineers, removing technical blockers and maintaining high engineering standards during agile delivery cycles,
• collaborating with delivery leads, architects and product owners on technical decisions, risks and trade-offs,
• leading squads of 8-20 engineers while remaining actively involved in software development.

• the role involves working closely with a US-based client, requiring availability until 6:00 PM CET daily and until 9:00 PM CET twice a week to accommodate collaboration across time zones,
• expert-level knowledge of React, Next.js and Type Script,
• strong experience translating Figma designs into production-ready frontend applications,
• hands-on experience developing backend solutions using Type Script and AWS serverless services, including Lambda, API Gateway, Event Bridge, Step Functions and DynamoDB,
• strong API design skills and experience with event-driven integrations,
• production experience building LLM-powered applications, ideally using Claude through AWS Bedrock,
• practical experience with AI agent orchestration using Lang Graph, including RAG, tool use, prompt design, guardrails and evaluation,
• experience building CI/CD pipelines with Git Hub Actions and managing infrastructure as code using AWS CDK,
• experience implementing automated unit, integration and end-to-end tests,
• daily, effective use of AI-assisted coding tools such as Claude Code, Git Hub Copilot or Cursor, with an understanding of safe and productive usage in team environments,
• hands-on experience delivering software in agile teams,
• proven experience leading squads of 8-20 engineers while maintaining a hands-on technical role,
• practical experience using AI-powered assistants (e.g. Claude Code, Git Hub Copilot,…