Gen AI Developer w Warszawa, Polska

At Capgemini Invent, we believe difference drives change. As inventive transformation consultants, we blend our strategic, creative and scientific capabilities, collaborating closely with clients to deliver cutting-edge solutions. Join us to drive transformation tailored to our client's challenges of today and tomorrow. Informed and validated by science and data. Superpowered by creativity and design. All underpinned by technology created with purpose.

Your role

As a Gen AI Developer, you will build and optimize innovative AI solutions using LLMs, Generative AI technologies, and cloud platforms. You will collaborate with cross-functional teams to transform business needs into scalable, AI-powered applications and drive GenAI innovation.

Your tasks

• Design, develop, and deploy cutting-edge Generative AI solutions, leveraging state-of-the-art foundation models. 
• Fine-tune and optimize LLMs (Large Language Models) and other generative models for industry-specific applications. 
• Implement GenAI-driven applications, integrating NLP, image generation, and multimodal AI technologies. 
• Work with cloud platforms and distributed computing tools to build scalable AI solutions. 
• Collaborate with cross-functional teams, translating business needs into AI-powered innovations. 
• Participate in research and development initiatives to stay ahead in the evolving GenAI landscape. 

Your profile

• Passion for Generative AI and innovation, with hands-on experience developing AI-powered applications. 
• At least 1.5 year of experience in AI/ML, with expertise in LLMs, NLP, or computer vision models. 
• Strong programming skills in Python, with experience using frameworks such as LangChain, LangGraph, Hugging Face Transformers. 
• Knowledge of model fine-tuning, RLHF (Reinforcement Learning from Human Feedback), and prompt engineering. 
• Experience working with cloud platforms (AWS, Azure, GCP) and MLOps best practices. 
• Familiarity with data pipelines, vector databases (e.g., FAISS, Pinecone), and retrieval-augmented generation (RAG). 
• Team-player attitude with excellent communication skills (English is a must, German or Polish are a plus), and openness to working with international clients. 

What you'll love about working here

• Well-being culture: medical care with Medicover, private life insurance, and Sports card. But we went one step further by creating our own Capgemini Helpline offering therapeutical support if needed and the educational podcast "Let's talk about wellbeing" which you can listen to on Spotify.
• Access to over 70 training tracks  with certification opportunities (e.g., GenAI, Excel, Business Analysis, Project Management) on our NEXT platform. Dive into a world of knowledge with free access to Education First languages platform, Pluralsight, TED Talks, Coursera and Udemy Business materials and trainings.
• Continuous feedback and ongoing performance discussions thanks to our performance management tool GetSuccess supported by a transparent performance management policy.
• Enjoy hybrid working model  that fits your life - after completing onboarding, connect work from a modern office with ergonomic work from home, thanks to home office package (including laptop, monitor, and chair). Ask your recruiter about the details.

Get to know us

Capgemini is committed to diversity and inclusion, ensuring fairness in all employment practices. We evaluate individuals based on qualifications and performance, not personal characteristics, striving to create a workplace where everyone can succeed and feel valued.

Do you want to get to know us better? Check our Instagram — @capgeminipl or visit our Facebook profile — Capgemini Polska. You can also find us on YouTube. 

About Capgemini

Capgemini is the business transformation partner for enterprises in the age of AI. We help organizations imagine and build an intelligent, sustainable future, combining AI, technology and human ingenuity to transform how they operate, innovate and grow. With unique end-to-end capabilities spanning strategy, technology, engineering and intelligent operations, we bring together deep industry expertise and market-leading capabilities in AI, cloud and data to turn ambition into measurable business outcomes at scale. Supported by a robust ecosystem of partners and nearly 60 years of expertise, Capgemini is a responsible and diverse global organization of over 410,000 team members in more than 50 countries. The Group reported 2025 revenues of €22.5 billion.