Back End Developer

Start Date: ASAP

Rate: Circa £450 - £500

IR35: Outside

Contract length: 6months

Location: 1-2 days per week on site

My client is requiring the support of a senior backend engineer (Python) who will work on expanding a deployed "version 1" PDF document processor, which uses Microsoft Document Intelligence and OpenAI to extract data for human validation.

The task involves extending the rules to handle a wider variety of PDFs, supported by robust tests, to create a reliable human-in-the-loop pipeline that ensures high confidence in the extracted data.

Key skills:

• Expert in Python 3, with experience in testable architectures, TDD, CI, and modularisation
• Proficient in writing PyTests and using real-world example data
• Experience with deployed Python and cloud best practices
• Independent, self-driven, and able to collaborate with domain experts
• Focused on team success and comfortable with constructive feedback

Desired skills:

• Pandas
• Experience with Microsoft Document Intelligence JSON, especially for table structures (or equivalent)
• Azure Functions, MLOps best practices
• Experience with OpenAI APIs, including handling hallucinated results
• Participation in code reviews and promoting best engineering practices
• Collaboration with data science teams and mentoring less experienced members
• Experience with NLP embeddings
• Interest in AI, computer vision, and natural language processing
• Familiarity with accounting terms in private equity or venture capital
• Experience with Postgres SQL (or equivalent) and FastAPI