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Contact  
Robert Goffin
Job Ref: 
LI-152

Senior Python Engineer (AI/ML)

Date Added:  
May 15, 2026
Salary:  
£90,000 - £110,000
Type:  
Contract
Fixed Term
Permanent
Location:  
City Of London, England, United Kingdom
Vacancy Details

About the job

Senior Python Engineer wanted by a thriving production AI company who are seeing fantastic growth. They are seeking a senior python engineer / senior python developer with strong recent AI/ML development experience, to help build production-grade AI systems that power complex, real-world operations. This is not a research role: we’re looking for a capable software engineer who can design, build and ship scalable Python services that integrate advanced machine learning and LLM into live products used every day.

As a Senior Python Engineer, you’ll work at the intersection of backend engineering and applied AI. You’ll own systems end-to-end: from model training pipelines through to low-latency inference services, ensuring reliability, performance and clean architecture across the stack.

What you’ll be doing

  • Designing and building robust Python backend services (APIs, async systems, data pipelines)
  • Integrating large language models (Claude, GPT-4 etc) into production applications
  • Developing and maintaining LLM model training and evaluation workflows
  • Optimising inference performance and improving latency
  • Implementing monitoring, logging and resilience best practices
  • Contributing to system architecture and mentoring other engineers

Required experience

  • 6+ years building production systems in Python, as a Senior Python Engineer
  • Followed by strong recent experience (1-2 years+) integrating LLMs or advanced ML models into live products - production level hosting is required, not just local deployment
  • Strong backend/API development experience, ideally with FastAPI
  • Understanding of model training workflows and evaluation
  • Comfortable with containerisation / Docker and CI/CD deployment
  • Ability to write clean, tested, maintainable code

This is a high-impact opportunity for a Senior Python Engineer who enjoys building reliable systems as much as working with cutting-edge models. In return for your experience, the company offer a competitive salary between £90,000 and £110,000 per year, healthcare and medical benefits, and an excellent holiday allowance. They have a central London office and you would need to come in 1 day per week.

To apply for this position, send your CV to Rob Goffin at IT Recruitment Solutions now!

Senior Python Engineer, AI/ML Engineer, Senior Python Developer, Artificial Intelligence, Machine Learning, LLMs, FastAPI, Permanent, London 1 day per week

£90,000 - £110,000 / year + good benefits

Requirements added by the job poster

• 1+ years of work experience with Machine Learning

• No need for visa sponsorship

• Authorized to work in United Kingdom

• 5+ years of work experience with Python (Programming Language)

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