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Senior AI Solutions Engineer

Location: Wimbledon, United Kingdom; Stockholm, Sweden

Contract Type: Full Time Permanent

Job Reference ID: 11494

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Our DevOps culture is strong: we believe in “release small, release often.” Thanks to our fully automated CI/CD pipelines, we push over 13,000 releases to production every year, delivering value to customers in real time. We use modern technologies across backend, frontend, apps, data and infrastructure, and we’re continuously evolving. We tackle complex engineering challenges such as real-time scalability, database migrations with no downtime, and peak transaction loads, all while maintaining an exceptional and safe customer experience.

Turning skills into thrills

    Turning skills into thrills

  • Technical Expertise
  • Strategic Thinking and Innovative
  • Adaptive Problem-Solving & Experimentation
  • Cross-Functional Collaboration
  • Agility & Adaptability
  • Curiosity & Continuous Learning

United by our three values

illustration of a heart Passion to succeed

Striving for excellence and beyond

illustration of a scale Accountability

Taking ownership and upholding high standards every day

illustration of a group of people Collective Spirit

As one team, we achieve more

Senior AI Solutions Engineer

About the role

As a Senior AI Solutions Engineer, you'll design, build, and run AI solutions that make a real difference in day-to-day decision-making across the business. This is a hands-on engineering role focused on shipping AI into production, not prototypes.

You'll work across Python + Java microservices, LLM/RAG systems, vector search, and data pipelines, deploying to AWS (incl. Bedrock) and Azure (Azure AI Foundry). You'll partner closely with the Lead AI Solutions Engineer, platform engineers, analysts, and data teams to deliver scalable capabilities that are secure, observable, and maintainable.

What you'll do

Build production AI systems (LLMs + RAG)

  • Design and implement RAG-powered services (assistants, chat experiences, semantic search) using modern LLM patterns

  • Improve retrieval quality through embeddings, metadata enrichment, ranking strategies, and evaluation feedback loops

  • Build modular components that can be reused across multiple use cases and domains

Develop scalable APIs and microservices

  • Build and maintain backend services and APIs using Python (FastAPI/LangChain/Hugging Face) and Java

  • Create clean service boundaries, versioned APIs, and secure integration patterns for enterprise environments

  • Produce high-quality documentation and maintain an engineering standard that scales beyond one team

Engineer reliable data and embedding pipelines

  • Build and operate pipelines for ingestion, embedding generation, chunking strategies, and metadata processing

  • Orchestrate ETL/ELT workflows using Airflow for batch and near-real-time use cases

  • Ensure governance, security, and privacy requirements are met (and provable)

Operate in cloud with strong engineering hygiene

  • Deploy solutions across AWS and Azure, using CI/CD and IaC to keep releases safe and repeatable

  • Containerise and run workloads with Docker and Kubernetes, working with Platform Engineering on Kindred Cloud

  • Build with production realities in mind: logging, monitoring, failure handling, scalability, and cost controls

Own semantic search and vector database performance

  • Implement and optimise vector search using PGVector / ChromaDB, including indexing strategies and query performance

  • Work with Sentence Transformers / OpenAI embeddings and similarity techniques (e.g., cosine similarity) to improve precision/recall

Collaborate, influence, and raise the bar

  • Work across teams to align on design choices, integration patterns, and shared reusable components

  • Mentor others through reviews, pairing, and knowledge-sharing sessions

  • Bring pragmatic innovation: test new approaches, keep what works, and productise it

What success looks like

  • AI features move from idea → production with measurable adoption and value

  • RAG systems deliver relevant, trustworthy outputs with clear performance indicators

  • Services are secure, observable, and operationally stable (not fragile demos)

  • Engineers and stakeholders trust the platform and can build on it without reinventing the wheel

What we're looking for

  • 5+ years in backend engineering, data engineering, or AI/ML integration roles

  • Strong hands-on skills in Python and solid experience with Java (or deep JVM ecosystem experience)

  • Practical experience building with LLMs, embeddings, semantic search, and RAG-style architectures

  • Experience with vector databases (PGVector/ChromaDB or similar) and retrieval optimisation

  • Strong delivery habits: CI/CD, Docker, Kubernetes, and Infrastructure as Code (Terraform/CloudFormation)

  • Cloud experience across AWS (EC2, S3, Lambda, Bedrock, CodePipeline etc.) and/or Azure AI Foundry

  • Comfortable working with stakeholders, ambiguity, and trade-offs — you can turn fuzzy problems into shipped outcomes

Nice to have

  • Experience fine-tuning or adapting models for domain use cases

  • Experience building internal developer platforms or reusable AI components

  • Experience with evaluation/observability for GenAI systems (quality, latency, cost, drift, safety)

  • Prior experience in regulated environments or with identity/security integrations (SSO, IAM)

Why join

  • Work on real AI products used across the organisation — not proofs of concept

  • Modern stack: LLMs, RAG, vector search, Kubernetes, multi-cloud

  • Strong cross-functional collaboration with data, platform, and product teams

  • Space to innovate, improve foundations, and build capabilities that scale

Apply

Testimonials

  • Bertrand Le Piolot
    Photo de profil Bertrand Le Piolot

    My mission is to position cybersecurity as a business enabler, by finding the right balance between security requirements and business development objectives.

    Bertrand Le Piolot
    Group Cybersecurity Director
  • Lesya Liskevych
    Photo de profil Lesya Liskevych

    Our team turns every customers interaction into mainingful insights, leveraging AI to personalise and enhance the user experience on our gaming platform.

    Lesya Liskevych
    Head of Product Insights & AI Automation Technology
  • From improving product features to enhancing safe gaming practices, data isn't just information, it's a catalyst for innovation and maintaining the Group's integrty.

    Nonna Shakhova
    Cloud Data Engineer
    Nonna Shakhova
    Photo de profil Nonna Shakhova

A European gaming champion

FDJ UNITED is a European leader in betting and gaming, trusted for its iconic brands and technological strength across around 15 regulated markets. We’re rapidly digitising our lottery business and expanding our sports-betting footprint, creating exciting opportunities to build the next generation of player experiences. Here you’ll work on high-impact projects: modernising platforms, scaling data-driven personalisation, and developing tools that both delight customers and protect them. Our goal is to strengthen customer relationships through smarter identification and insights. That means meaningful, purpose-driven work, from customer service to marketing, product design, compliance and more. All within an international, innovation-focused environment. We are shaping the future of gaming, join us!

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