Senior Backend Engineer, AI Platform & Secure APIs

digiLab; West of England; On-site; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Competitive Salary

Personal & professional development

BUPA private health care (via salary-s

Company Cashplan

Cycle to work scheme

Referral Program

Regular social events

Job summary

digiLab is a formative AI company building the Uncertainty Engine platform to power trustworthy AI for critical problems. We seek a Senior Software Engineer to design and implement scalable, secure backend systems, with an emphasis on reliability and product-minded collaboration.

You will lead architecture, deploy via IaC on AWS, and maintain RESTful APIs while supporting frontend tasks when needed. Exeter or Bristol on-site, with a fast-growing startup culture and strong emphasis on Scrum and

Qualifications

• Significant industry experience building production software.
• Deep Python expertise, with clean, logical, self-explanatory code.
• Proven experience building production APIs with FastAPI (or similar async Python frameworks).
• Hands-on experience deploying AWS infrastructure as code (IaC).
• Degree-level qualification in computer science or a related field.
• Experience with DevOps and MLOps.
• Solid grasp of software design patterns, SOLID and DRY principles, and architectural patterns.
• Confidence with Git/GitHub, Docker and containerisation, Linux, bash, and the command line.
• Command of the testing pyramid and automated testing types (unit, component, smoke, performance, load, end‑to‑end).
• Familiarity with modern statistical ML and AI tooling, including NumPy, SciPy, and Pandas.
• A track record of collaborating in a fast‑paced agile team, ideally using Scrum.

Responsibilities

• Lead the design, development, and maintenance of high-quality software, owning solutions from architecture through to deployment
• Build scalable systems using AWS, Python, MongoDB, and other modern technologies
• Embed security best practices across the full software development lifecycle
• Own and improve our CI/CD pipelines to keep deployments fast, reliable, and repeatable
• Apply site reliability engineering principles to strengthen system performance and resilience
• Partner with product management to translate business requirements into elegant technical solutions
• Design clean, consistent RESTful APIs
• Provide technical support and lead incident investigations
• Champion Scrum and drive continuous improvement in how the team works
• Foster a collaborative, learning‑oriented environment where engineers grow
• In addition to backend work, you may also be required to support tasks on the frontend — we value engineers who enjoy working across the stack
• Adopt AI tools to assist and accelerate your work

Skills

Python

REST APIs

AWS

Git/GitHub

Docker

Linux

CI/CD

MLOps

Scrum

Education

Degree in Computer Science

Tools

FastAPI

MongoDB

React

TypeScript

Terraform

Job description

digiLab is a formative AI company building the Uncertainty Engine platform to power trustworthy AI for critical problems. We seek a Senior Software Engineer to design and implement scalable, secure backend systems, with an emphasis on reliability and product-minded collaboration.

You will lead architecture, deploy via IaC on AWS, and maintain RESTful APIs while supporting frontend tasks when needed. Exeter or Bristol on-site, with a fast-growing startup culture and strong emphasis on Scrum and