GenAI Full Stack Engineer - Consultant / Senior Consultant - Digital Excellence

Capgemini Invent; Manchester; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

Capgemini Invent in the UK seeks a GenAI Full-Stack Developer to build cutting-edge GenAI and non-GenAI applications. You will design, develop and scale full-stack solutions, collaborating with teams to deploy robust end-to-end platforms.

The role emphasizes hands-on work with LangChain, LLMs, cloud hosting and modern CI/CD pipelines. You will grow technically by exploring emerging GenAI technologies, mentoring peers, and contributing to business development and internal initiatives while

Qualifications

• Active SC clearance or eligibility required.
• Experience building microservices with Python/FastAPI or TS/Express.
• Strong React/TypeScript frontend with Next.js or Vite.
• Experience with GenAI tooling and LLMs (OpenAI, Anthropic, etc.).

Responsibilities

• Collaborate to develop GenAI POCs for clients (RAG, intelligent agents).
• Scale POCs to production-ready solutions for customer use.
• Design and develop FullStack apps for GenAI and non-GenAI projects.
• Support infrastructure enabling end-to-end solutions.
• Explore and upskill in emerging GenAI technologies.
• Coach and mentor team members to grow skills.

Skills

Backend Development

Frontend Development

GenAI Frameworks

LLM Experience

Cloud Platforms

Containerization

Infrastructure as Code

Monitoring Tools

CI/CD

Tools

Docker

Kubernetes

Terraform

LangChain

Job description

Global Grade - B

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.

ROLE DETAILS

SBU - Invent

CU - Business Technology

Global Grade - B

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

Join our team as a key player in building cutting-edge GenAI full-stack applications. In this role, you will:

• Collaborate with the team to develop GenAI proof-of-concepts (POCs) for clients using technologies like Retrieval-Augmented Generation (RAG) and intelligent agents.
• Scale existing POCs to production-ready solutions for customer use.
• Design and develop FullStack applications for both GenAI and non-GenAI projects.
• Support the development of infrastructure to enable robust end-to-end solutions.
• Grow your skills by exploring and experimenting with emerging technologies, including GenAI.
• Share your expertise by coaching and mentoring team members, fostering skill development within the team.

Additional Opportunities

This role offers avenues for both personal and business growth through contributions in the following areas:

Business Development

• Lead or contribute to proposals, RFPs, bids, and client pitches.
• Develop innovative propositions and participate in client-hosting events.

Internal Initiatives

• Engage in campaign development, internal think tanks, and whitepapers.
• Contribute to practice operations, recruitment, and team-building activities.
• Help shape the organization’s offerings and capabilities.

Learning and Development

• Access training and certifications to enhance your career and align with company needs.
• Stay at the forefront of technological advancements by upskilling in high-demand areas like GenAI.

YOUR PROFILE

To be considered for this position you must meet below requirements:

Eligibility

• You need to hold an active SC (Security Check) Clearance or be eligible for such level of clearance.

Technical Expertise

• Backend Development: Experience in building microservices using either Python with FastAPI, or TypeScript with Express or equivalent
• Frontend Development: Experience in building React applications using TypeScript, leveraging frameworks such as Next.js or Vite.
• GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python or JavaScript).
• LLM experience: Practical experience with Large Language Models (LLMs) such as OpenAI, Anthropic, Mistral, or Llama, and tools like Ollama.
• Cloud Platforms: Proficiency in AWS or Azure for hosting and deployment.
• Containerization and Orchestration: Hands‑on experience with Docker, Kubernetes, and Docker Compose.
• Infrastructure as Code (IaC): Exposure to tools like Terraform.
• Monitoring Tools: Familiarity with LLM monitoring tools like Langsmith, Langfuse, or similar.
• CI/CD: Experience with continuous integration and deployment tools such as GitLab, GitHub, or Jenkins.

Database Management

• Vector Databases: Experience with and (but not limited to) ChromaDB, Pinecone, PGVector, MongoDB , Qdrant etc.
• NoSQL: Familiarity with NoSQL databases (e.g., MongoDB preferred).
• SQL: Experience working with SQL databases like PostgreSQL.

Version Control

• Proficient in Git and version control platforms like GitHub, GitLab, etc.

Work Methodology

• Experience working in an agile team environment.

Communication Skills

• Ability to effectively communicate with internal and external stakeholders, adapting your approach based on the audience and context.

WHAT YOU'LL LOVE ABOUT WORKING HERE?

We are delighted to have received the “Glassdoor Best Places to work in the UK’ accolade for 4 consecutive years. To see what it’s like to work at Capgemini Invent, visit our Glassdoor page. Capgemini Invent offers Consultants a culture of learning, ownership, and focus on value.

• You’ll gain exposure to high-profile transformations and gain hands‑on exposure to leading technologies.
• Our consultants are formally trained by industry experts in consulting and client delivery. Consultants have access to a vast array for different training and certifications in a variety of areas: Cybersecurity (CISSP, CISM), cloud technologies (AWS, Azure, GCP), and Agile delivery (Scrum Master, Product Owner, Scaled Agile Framework). Capgemini Invent offers you the flexibility to develop various areas of knowledge in technical domains aligned both to your interests and our client’s outcomes.
• Les Fontaines: Capgemini Invent has a unique training environment just outside of Paris, where we can immerse ourselves in thought‑leadership, share knowledge and build capabilities that will help us and our clients to succeed.
• We hold monthly showcases of our digital transformation initiatives, sharing knowledge and showing off how the power of technology is impacting our clients.
• There are monthly team drinks, and it’s a chance to connect face‑to‑face with the wider team over a few drinks in the city. Team away days are always a chance to connect with the team, have fun and learn something new.
• We hold monthly showcases of our digital transformation initiatives, sharing knowledge and showing off how the power of technology is impacting our clients.
• There are monthly team drinks, and it’s a chance to connect face‑to‑face with the wider team in the city. The monthly team breakfasts give you a different, more relaxed setting to meet up in the office to hear from the leadership, meet colleagues and discuss the trends and insights within the market. Team away days are always a chance to connect with the team, have fun and learn something new.

NEED TO KNOW

At Capgemini we don’t just believe in Diversity & Inclusion, we actively go out to making it a working reality. Driven by our core values and Active Inclusion Campaign, we build environments where you can bring you whole self to work.

We aim to build an environment where employees can enjoy a positive work‑life balance. We embed hybrid working in all that we do and make flexible working arrangements the day‑to‑day reality for our people. All UK employees are eligible to request flexible working arrangements.

Employee wellbeing is vitally important to us as an organisation. We see a healthy and happy workforce a critical component for us to achieve our organisational ambitions. To help support wellbeing we have trained ‘Mental Health Champions’ across each of our business areas. We have also invested in wellbeing apps such as Thrive and Peppy.

We are a Disability Confident Employer

Capgemini Is Proud To Be ADisability Confident Employer (Level 2)under The UK Government’s Disability Confident Scheme. As Part Of Our Commitment To Inclusive Recruitment, We Will Offer An Interview To All Candidates Who

• Declare they have a disability, and
• Meet the minimum essential criteria for the role.

Please opt in during the application process.

CSR

We’re also focused on using tech to have a positive social impact. So, we’re working to reduce our own carbon footprint and improve everyone’s access to a digital world. It’s something we’re really serious about. In fact, we were even named as one of the world’s most ethical companies by the Ethisphere Institute for the 10th year. When you join Capgemini, you’ll join a team that does the right thing.

Whilst you will have London, Manchester or Glasgow as an office base location, you must be fully flexible in terms of assignment location, as these roles may involve periods of time away from home at short notice.

We offer a remuneration package which includes flexible benefits options for you to choose to suit your own personal circumstances and a variable element dependent grade and on company and personal performance.

About Capgemini

Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 350,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end‑to‑end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, cloud and data, combined with its deep industry expertise and partner ecosystem. The Group reported 2024 global revenues of €22.1 billion.