Senior Back End Engineer

W Talent; City Of London; On-site; GBP 80,000 - 100,000; Full time

Job summary

A stealth startup in the United Kingdom is looking for a Senior Backend Engineer to help design and scale core infrastructure for AI-driven data systems. The ideal candidate will have over 5 years of backend experience and strong SQL skills. This is an exciting opportunity to impact a data-driven technology landscape.

Qualifications

• 5+ years of backend experience, preferably with Python, Go, or Kotlin.
• Strong SQL and data modelling skills required.
• Experience with distributed systems and event-driven design is essential.

Responsibilities

• Build and optimise ingestion pipelines, APIs, and query engines.
• Own data performance across PostgreSQL, ClickHouse, and Kafka.
• Shape architecture for AI-powered data processing.

Skills

Backend experience (Python, Go, or Kotlin)

Strong SQL skills

Data modelling skills

Experience with distributed systems

Curiosity about AI

Job description

Senior Backend Engineer AI x Data Systems

Salary 80 to 100K plus equity

A stealth start up backed by top investors is reimagining how data-driven workflows are built and automated with AI ( FS and Fintech ). We're looking for a Senior Backend Engineer to help design and scale core infrastructure powering next-gen, high-throughput data systems.

The role:

• Build and optimise ingestion pipelines, APIs, and query engines
• Own data performance across PostgreSQL, ClickHouse, and Kafka
• Shape architecture for large-scale, AI-powered data processing
• Work closely with product and AI teams to ship fast and iterate

You'll bring:

• 5+ years of backend experience (Python, Go, or Kotlin preferred)
• Strong SQL and data modelling skills
• Experience with distributed systems, streaming, or event-driven design
• Curiosity about AI, data pipelines, and intelligent automation

If you're excited by building reliable systems for AI-driven products and want to make an impact at an early stage - let's talk.