About the job

Senior Backend Engineer | Enterprise AI💰 £130k–£140k + Equity | London (On-site)

We're looking for a Senior Backend Engineer to join a fast-growing technology company building enterprise AI products used by some of the world's largest organisations.This role is focused on designing and scaling the backend systems that power complex AI applications. You'll work on everything from distributed services and high-performance APIs to data pipelines and cloud infrastructure, helping build reliable, secure, and scalable systems that support production AI workloads.

Beyond writing great code, you'll influence technical direction, mentor other engineers, and work closely with product, infrastructure, and machine learning teams to solve challenging engineering problems.

What you'll do day-to-day:Design, build, and maintain scalable backend services and APIs
Develop high-performance data pipelines and distributed systems
Build infrastructure that supports production AI and machine learning workloads
Optimise PostgreSQL databases for scale, reliability, and performance
Implement asynchronous processing, messaging systems, and event-driven architectures
Improve system reliability, observability, and operational performance
Collaborate with cross-functional teams to deliver new platform capabilities
Lead technical discussions, review code, and mentor other engineers
Contribute to engineering standards, architecture decisions, and best practices

What we're looking for:Strong backend engineering experience building production systems at scale (7+ years preferred)
Excellent Python skills, with experience using frameworks such as FastAPI, Flask, or Django
Strong knowledge of PostgreSQL, including performance tuning and database scaling
Experience building distributed systems and REST APIs
Familiarity with Redis, caching strategies, and asynchronous task processing (Celery or similar)
Experience with message brokers such as Kafka, RabbitMQ, or Azure Service Bus
Cloud experience (Azure preferred, AWS or GCP also considered)
Experience with Docker, Kubernetes, CI/CD pipelines, and modern engineering practices
Strong understanding of backend security, authentication, and data protection
Someone who enjoys solving complex technical challenges and taking ownership of systems from design through production

Responsibilities

About the job

Senior Backend Engineer | Enterprise AI💰 £130k–£140k + Equity | London (On-site)

What you'll do day-to-day:Design, build, and maintain scalable backend services and APIs
Develop high-performance data pipelines and distributed systems
Build infrastructure that supports production AI and machine learning workloads
Optimise PostgreSQL databases for scale, reliability, and performance
Implement asynchronous processing, messaging systems, and event-driven architectures
Improve system reliability, observability, and operational performance
Collaborate with cross-functional teams to deliver new platform capabilities
Lead technical discussions, review code, and mentor other engineers
Contribute to engineering standards, architecture decisions, and best practices

What we're looking for:Strong backend engineering experience building production systems at scale (7+ years preferred)
Excellent Python skills, with experience using frameworks such as FastAPI, Flask, or Django
Strong knowledge of PostgreSQL, including performance tuning and database scaling
Experience building distributed systems and REST APIs
Familiarity with Redis, caching strategies, and asynchronous task processing (Celery or similar)
Experience with message brokers such as Kafka, RabbitMQ, or Azure Service Bus
Cloud experience (Azure preferred, AWS or GCP also considered)
Experience with Docker, Kubernetes, CI/CD pipelines, and modern engineering practices
Strong understanding of backend security, authentication, and data protection
Someone who enjoys solving complex technical challenges and taking ownership of systems from design through production