Lead FullStack Engineer (AI)

Poland and Middle-Eastern Europe; Polska; On-site; PLN 260,000 - 420,000; Full time

Job summary

Xebia is seeking a hands-on Technical Lead who blends strong software engineering with technical leadership, writing production code while guiding a high-performing team of engineers.

You will work with a US-based client, require availability until 6:00 PM CET daily and 9:00 PM CET twice a week, and lead frontend, backend and AI integrations using React, Next.js, TypeScript, AWS Bedrock, Claude and LangGraph.

Qualifications

• Expert-level frontend skills with React/Next.js and TypeScript.
• Experience delivering AI-powered features and LLM integrations.
• Ability to work with US-based clients and align across time zones.
• Strong API design and event-driven integration experience.

Responsibilities

• Write production code and guide a high-performing engineering team.
• Lead design and implementation of AI-powered features.
• Establish engineering standards and review processes.
• Drive CI/CD pipelines with GitHub Actions and AWS CDK.
• Mentor engineers and collaborate with delivery leads and product owners.

Skills

React

Next.js

TypeScript

Figma-to-UI translation

AI-powered development

Leadership in agile teams

Tools

AWS Bedrock

Claude

LangGraph

GitHub Actions

AWS CDK

Lambda/API Gateway

Job description

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, FedEx, 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.

You will be:

We are looking for a hands‑onTechnical 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:

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 LangGraph, 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 GitHub 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.

Your profile:

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 TypeScript,

strong experience translating Figma designs into production-ready frontend applications,

hands‑on experience developing backend solutions using TypeScript and AWS serverless services, including Lambda, API Gateway, EventBridge, 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 LangGraph, including RAG, tool use, prompt design, guardrails and evaluation,

experience building CI/CD pipelines with GitHub 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, GitHub Copilot or Cursor, with an understanding of safe and productive usage in team environments,

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, GitHub Copilot, Cursor) to improve productivity, quality, or decision‑making in software delivery,

Work from the European Union region and a work permit are required.

Nice to have:

experience applying GenAI in a more structured way within the SDLC, including defined workflows, prompt patterns, or tool integrations embedded into daily work.

• interest in and familiarity with emerging AI‑driven practices (e.g. agent‑based workflows, automation patterns, AI‑augmented development), with a willingness to explore and experiment beyond standard approaches.