London Prism Digital Ltd 1-2 Paris Garden London SE1 8ND
Senior Data Engineer 2026-07-02 Senior Data Engineer | Python, Vector Databases & AI Data Pipelines | Early Engineer at an AI Platform Rebuilding an Entire Industry's Back Office There's a particular kind of frustration that comes from watching an entire industry run on spreadsheets, phone calls and email chains long after the technology to fix it exists. Penpole 2026-08-02

Senior Data Engineer

£70,000 - £100,000

London
Lauren Millane

70000 DAY

£70,000 - £100,000

GBP
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Senior Data Engineer | Python, Vector Databases & AI Data Pipelines | Early Engineer at an AI Platform Rebuilding an Entire Industry's Back Office

 

  • Salary: £70,000 - £100,000
  • Location: Victoria, central London. 4 days a week on-site, Wednesdays from home

 
There's a particular kind of frustration that comes from watching an entire industry run on spreadsheets, phone calls and email chains long after the technology to fix it exists. That's the gap this company is closing. They've built an AI assistant that takes over the operational grind for property managers, letting agents and build-to-rent teams: the compliance chasing, the maintenance coordination, the scheduling, the endless admin that eats up most of a property manager's week. Pilot customers are already live across thousands of units, and the feedback has been strong enough that the business is now gearing up for its next funding round.
 
The team sits at 20-30 people globally, with engineering at around 13 and mostly remote outside the core London group. It's a flat set-up: leads are simply the engineers who've earned it, and everyone reports into the Head of Engineering. Data hasn't had a dedicated owner yet, and you'd be joining right at the point where that's being built, working alongside the team defining the architecture rather than dropping into something already set in stone.
 
Day to day you'll be building and scaling the systems behind the AI product: real-time pipelines, analytics infrastructure, vector databases and the data workflows that feed the machine learning side of the platform. You'll work closely with the AI and backend engineers to make sure the platform can handle serious volumes of operational data reliably, and you'll have real input into the tooling and technical decisions as the function takes shape.
 
What They're Looking For (Non-Negotiables)

  • 5 years in data engineering or backend engineering
  • Strong track record designing and building data pipelines and distributed data systems
  • Relational databases (PostgreSQL preferred, MySQL or similar acceptable)
  • NoSQL databases
  • Vector databases used in modern AI systems
  • Strong Python

 
What You'll Work With

  • Apache Spark
  • Apache Airflow
  • Kafka
  • Elasticsearch / OpenSearch
  • MongoDB
  • Vector databases such as Qdrant, Milvus or pgvector
  • Pandas and Polars

 
Nice to Haves

  • JavaScript / Node.js alongside Python
  • Experience on AI or machine learning platforms
  • Stream processing and event-driven architectures
  • Cloud infrastructure (GCP, AWS or Azure)
  • Time in a high-growth startup or early-stage company

 
Why Join / Projects
You're joining at the point where the data function still has more questions than answers, which means your fingerprints end up on the actual architecture rather than just the code that runs on top of it. You'll get real exposure to the AI and ML side of the business through the vector search and retrieval work, not just traditional pipeline building, and you're close enough to the founders and core engineering team that good ideas don't get lost in layers of process.
 
If this role peaks your interest, please apply and I’ll give you a call if I think you’re suitable.
 
Senior Data Engineer | Python, Vector Databases & AI Data Pipelines | Early Engineer at an AI Platform Rebuilding an Entire Industry's Back Office

 

Job reference: #BH-12455