Founding Backend Engineer

jobster United Kingdom
Relocation
This Job is No Longer Active This position is no longer accepting applications
AI Summary

Founding Backend Engineer role at jobster involves designing and building core backend services and APIs in Python, architecting scalable data pipelines and distributed systems, and productionising ML models. The ideal candidate has 4+ years of backend engineering experience, strong Python experience, and experience in startups or high-growth environments.

Key Highlights
Design and build core backend services and APIs in Python
Architect scalable data pipelines and distributed systems
Productionise ML models in close collaboration with ML engineers
Key Responsibilities
Design and build core backend services and APIs in Python
Architect scalable data pipelines and distributed systems
Productionise ML models in close collaboration with ML engineers
Implement async processing, caching, and event-driven workflows
Set engineering standards and best practices from day one
Technical Skills Required
Python FastAPI Flask Django PostgreSQL Redis Async task queues Message brokers Azure AWS GCP
Benefits & Perks
Up to £200k base
Meaningful equity
Relocation support in London

Job Description


Founding Engineer

Location: London King's Cross (Relocation Supported) - onsite

Salary: Up to £200k base + meaningful equity

We are partnered up with an early-stage, well-funded AI platform company solving complex problems for large, highly regulated enterprises. The product is already live, customers are active, and the company is scaling fast but the engineering team is still growing.

This is a true founding engineering position with real ownership, influence, and long-term upside.

The Role

As a Founding Backend Engineer, you’ll help architect and build the core backend systems from the ground up. You’ll work across system design, data infrastructure, and production reliability, partnering closely with ML, product, and infrastructure teams.

You won’t be maintaining legacy systems - you’ll be shaping the foundations that everything else is built on.

What You’ll Be Doing


  • Designing and building core backend services and APIs in Python
  • Architecting scalable data pipelines and distributed systems
  • Productionising ML models in close collaboration with ML engineers
  • Making early architectural decisions that will scale with the company
  • Implementing async processing, caching, and event-driven workflows
  • Setting engineering standards and best practices from day one


What We’re Looking For


  • 4+ years backend engineering experience
  • Strong Python experience (FastAPI, Flask, or Django)
  • Previous experience in startups or high-growth environments
  • Comfort working with ambiguity, speed, and limited structure
  • Strong database knowledge (PostgreSQL, Redis)
  • Experience with async task queues and message brokers
  • Cloud experience (Azure, AWS, or GCP)
  • Builder mindset: ownership, pragmatism, and bias toward action


Why Join


  • Competitive salary + meaningful equity
  • Relocation support in London
  • Direct access to founders and real technical influence
  • Opportunity to help build a company from early scale to category leader


This role is not about perfect roadmaps or fixed requirements.

It’s about building fast, thinking deeply, and owning what you ship.

#Jobster

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