Group AI Senior Developer

We are an independent global marketing communications group with a human-first approach. We connect strategy, creativity, technology and operations to help brands and organisations grow with purpose. Our global network supports more than 1,200 clients across 34 countries, backed by over 35 years of experience. Under the mci group umbrella, our agencies bring together world-class talent in strategy, creative development, account leadership, technology, production and research to shape meaningful, lasting impact.

mci group’s AI Team builds AI products for back-office and front-office use, with one ambition: transforming mci group into an AI-powered organisation. We’re looking for a Senior Developer to join us as a hands-on peer, bridging product and engineering.

What you’ll do

Build and ship features and AI agents, taking on the most complex parts

Turn product needs into clear, well-sized tasks with the Product Manager

Help fellow developers move faster through pairing, code reviews and shared tooling

Keep quality high across products, including measurable AI quality (evaluations, guardrails, cost tracking)

Work in tandem with our DevOps Engineer on CI/CD, infrastructure as code and monitoring

What you bring

5+ years building and shipping production software

Strong full-stack skills: TypeScript/React (Next.js) and Python or C#

Hands-on experience with production LLM applications (RAG, agents, evaluation)

Cloud experience on Azure and solid PostgreSQL data modelling

A collaborative, low-ego approach and a track record of making teams more effective

Fluent English; Spanish or French are strong assets

Able and willing to travel occasionally

Nice to have

Azure AI Foundry agents, Copilot Studio, vector search, AI-assisted development.

mci group is where you can bring your true self to work and be proud of what you do. Join us and make a difference!

5+ years building and shipping production software

Strong full-stack skills: TypeScript/React (Next.js) and Python or C#

Hands-on experience with production LLM applications (RAG, agents, evaluation)

Cloud experience on Azure and solid PostgreSQL data modelling

A collaborative, low-ego approach and a track record of making teams more effective

Fluent English; Spanish or French are strong assets

Able and willing to travel occasionally

Nice to have

Azure AI Foundry agents, Copilot Studio, vector search, AI-assisted development.