Lead Software Engineer

Capgemini; Województwo mazowieckie; On-site; PLN 260,000 - 420,000; Full time

Job summary

Capgemini is seeking a Full Stack Lead Engineer for the Neo enterprise AI platform. You will design and implement end-to-end solutions and collaborate with product, design, and engineering leadership.

This role combines architecture, product thinking, and hands-on coding to build scalable systems that matter across Capgemini globally.

Qualifications

• Proven technical leadership with mentoring experience.
• Hands-on with React and Node.js/NestJS in cloud environments.
• Experience designing scalable AI-powered platforms is a plus.

Responsibilities

• Drive end-to-end product development with Product, Design, and Engineering leadership.
• Lead full-stack initiatives across front-end, back-end, cloud infra, and AI UX.
• Shape architecture, DevOps practices, and platform growth for scalability.

Skills

Full stack engineering

React

Tailwind CSS

Node.js/NestJS

Cloud platforms (GCP/AWS/Azure)

Tools

GCP

AWS

Azure

NestJS

API development

Job description

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of technology and build a more sustainable, more inclusive world.

Your role

This is not your typical engineering role.

We’re looking for a Full Stack Lead Engineer to our group wide enterprise platform NEO, who doesn’t just write code, but thinks in systems, builds fast, and helps shape the future of both product and team. You’ll partner closely with the Global Product Design Director to define what’s next.

This isn’t just code. It’s architecture, product thinking, challenging the status quo, problem framing, fast iteration, and building systems that scale with intelligence and intent. It’s about leading the charge in building something that actually matters. It’s ambitious. The vision is clear, but there's ambiguity too — and that's where you thrive.

Neo is an internal AI platform for Capgemini employees that help to find relevant information in knowledge bases, perform specific actions in internal systems (for example requesting a day off) or solving business problems via connecting to custom programming interfaces (APIs). The mission is to increase professional efficiency by having a centralized place where users can solve their problems using AI.

About Group IT

At Group IT, we believe that difference drives change. Our vision is bold, and our mission is clear: to empower the business through technology that enables efficiency, profitability, and sustainable growth. We deliver enterprise-wide solutions by harmonizing global standards and integrating all business units into a unified IT services model.

As a strategic partner to the business, Group IT translates complex needs into actionable initiatives, advocating for our stakeholders across the global technological landscape. We are currently driving a series of transformative rollouts and initiatives that enhance security, streamline operations, and elevate digital experiences for every Capgemini employee around the globe.

Our ambition is to build a connected, intelligent, and inclusive IT enterprise—accessible to anyone, anytime, anywhere. This is your opportunity to lead changes, shape the future, and build technology that matters.

In this role you will play a key part in

• Drive end-to-end product development by partnering with Product, Design, and Engineering leadership to define MVPs, rapidly prototype solutions, and evolve a scalable AI platform into a market-leading product experience.
• Lead full-stack engineering initiatives across front-end, backend, cloud infrastructure, and AI-powered user experiences, leveraging technologies such as React, Node.js, GCP, Tailwind CSS, Micro-Frontends, Nx, Jest, and Cypress.
• Design and develop AI-centric platform capabilities, including custom middleware, backend services, session management, prompt orchestration, permissions models, data workflows, integrations, connectors, agents, and workflow automation solutions.
• Champion engineering excellence and scalability by fostering a culture of ownership, autonomy, technical quality, and innovation while contributing to architectural decisions, DevOps practices, infrastructure strategy, and platform growth.
• Operate effectively in a fast-moving environment, embracing ambiguity, making informed decisions with incomplete information, and bringing curiosity, creativity, and a continuous experimentation mindset to keep the organization at the forefront of AI technologies.

Your profile

• Strong full-stack engineering expertise with hands-on experience in React, Tailwind CSS, Node.js/NestJS, and cloud platforms such as GCP, AWS, or Azure.
• Solid backend and integration experience, including Java and/or .NET, API development, middleware architecture, and building high-performing, scalable connections between front-end and back-end systems.
• Proven technical leadership capabilities, with experience mentoring or leading engineers and a strong desire to help build teams, shape engineering culture, and drive transformational technology initiatives.
• Strategic and innovative mindset, combining hands-on software development with architectural thinking, curiosity for emerging technologies, and the ability to balance execution with long-term vision.
• Experience with modern AI and enterprise technologies, including AI agents, MCP, Agent-to-Agent frameworks, LLMs, RAG architectures, conversational interfaces, authentication protocols (OAuth2, SAML, OpenID Connect, SSO), and ideally exposure to solution architecture, networking, UX/product design, or zero-to-one product development.

What we believe you will enjoy about working here:

• Being at the forefront of Capgemini's AI transformation, helping shape the future of how thousands of employees work through Neo, our enterprise AI platform.
• Working with cutting-edge technologies including Generative AI, AI Agents, Large Language Models (LLMs), and intelligent automation solutions.
• Collaborating with a diverse network of business leaders, product managers, AI engineers, designers, and technology experts across the globe.
• Having the opportunity to influence strategy, product direction, and innovation while seeing your ideas translate into tangible business value.
• Joining a highly collaborative environment that encourages continuous learning, experimentation, and personal growth in one of the fastest-evolving areas of technology.

Application:

As part of our recruitment process, identity verification will be conducted through inspection of your ID card, and background checks may be carried out as required.

Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organizations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2024 global revenues of €22.1 billion.