Senior Software Engineer, Full Stack - AI

Senior Software Engineer, Full Stack – AI

Location: London or Manchester

This role is part of Fitch Group Technology’s agile teams delivering world‑class solutions for our BMI business.

What We Offer

You will join a talented, bright and driven team, leveraging modern cloud, containerised, serverless, microservices technology to build innovative solutions. The role is hybrid (in‑office / WFH) with a supportive environment that values ideas and contributions.

We’ll Count On You To

• Design and build ML/AI solutions (classical ML + modern deep‑learning / LLM approaches) aligned to product outcomes.
• Demonstrate proficiency in full‑stack technologies for enterprise‑scale websites and applications.
• Work as part of an agile team in design, development, debugging, and deployment while addressing security, cross‑browser and cross‑platform expectations.
• Translate design best practices to code, implementing appropriate API/data layer integration.
• Partner with Product Owner and stakeholders to understand business needs, define and develop applications/architecture, design, review, implement and optimise engineering processes.
• Build data expertise and own data quality for allocated areas of ownership.
• Maintain and enhance microservices‑based components for the application suite.
• Recommend, create and maintain development best practices and guidelines for use across various applications.
• Write automated unit, integration, performance and visual regression test cases.
• Promote, implement, and evolve development best practices, especially regarding commits, versioning and dependency management.

What You Need To Have

• 7+ years of experience designing and developing distributed application architecture of moderate‑to‑high complexity.
• 5+ years in software engineering or applied ML building real‑world AI/ML systems; strong Python proficiency and backend development expertise.
• Hands‑on experience building GenAI apps with LangChain and LangGraph, including agent design, state/memory management, and graph‑based orchestration.
• Proficiency in ML/NLP and generative models; experience with embeddings, vector stores, RAG, and LLM integration/fine‑tuning (OpenAI, LLaMA, Cohere, etc.).
• Strong coding in Python and experience with frameworks/tools such as FastAPI, PyTorch/TensorFlow, MLflow.
• 3‑5+ years of experience designing and developing scalable web applications using modern front‑end frameworks such as React/TypeScript.
• Experience working in high‑performance teams using Agile methodologies.
• Experience with CI/CD concepts and implementing build and deployment pipelines incorporating security, automation and quality (DevSecOps).
• Familiarity with modern data architecture and engineering technologies.
• Excellent communication skills with the ability to articulate ideas clearly and concisely.

Why Fitch?

At Fitch Group, our global network drives innovation and collaboration. We value diversity, encouraging a free exchange of ideas where every voice matters. Fitch is building incredible things and invites you to join our journey.

Additional Information

Learn more: fitchsolutions.com/bm

Fitch Group is a global leader in financial information services with operations in more than 30 countries. Wholly owned by the Hearst Corporation, we comprise Fitch Ratings, Fitch Solutions and Fitch Learning.

Fitch Group respects your privacy and ensures a conflict‑free work environment. Successful candidates will be asked to disclose any potential conflicts prior to employment commencement.

Fitch Group is proud to be an Equal Opportunity and Affiliated Action Employer. We evaluate qualified applicants without regard to race, color, national origin, religion, sex, sexual orientation, gender identity, disability, protected veteran status and other protected classes.

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