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Principal Software Engineer Python AI - FinTech

Client ServerThe City, Central London🇬🇧United Kingdom

Quick overview

Salary£120k/yr
SeniorityLeader
Employment typeTemporary/Casual
Work modeHybrid
LocationThe City, Central London, United Kingdom
DjangoFastAPILLMPython

Job description

Principal Software Engineer / Developer (Python AI) London / WFH to £120k

Do you have expertise with backend Python combined with a strong knowledge of Agentic AI?

You could be progressing your career at an established FinTech business specialising in automated investment reporting .

As a Principal Software Engineer you'll be in a product focused engineering role, combining hands-on Python development with technical ownership. You'll lead projects end to end, shape architecture and drive the delivery of new product capabilities, working across backend engineering, data processing and complex financial systems.

The business is also embracing AI and LLM technologies and is looking for someone who can bring a modern approach to engineering, identify practical applications and help drive adoption across the team.

Location / WFH:

You'll join the team in the London, City based office three days a week with flexibility to work from home the other two days.

About you:

  • You have a strong academic background, educated at Oxbridge or a Russell Group university, having achieved a 2.1 or above in a STEM discipline, Computer Science preferred
  • You have strong commercial software engineering experience, at Senior or Principal level
  • You have expertise with Python development combined with experience using Django or FastAPI (happy to use Django going forward)
  • You can lead the design and delivery of software products and take projects from initial concept through to production
  • You have experience with AI and LLMs, with a genuine interest in applying them to products and development workflows
  • You have experience shaping technical architecture and influencing engineering decisions
  • You have a product focused mindset, with the ability to balance new development with improving existing systems
  • Experience in FinTech, financial services or investment technology would be advantageous but not essential

What's in it for you:

  • Salary to £120k
  • Healthcare
  • Pension
  • Hybrid working
  • Impactful role with excellent development opportunities

Apply now to find out more about this Principal Software Engineer / Developer / Developer opportunity.


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