Senior Backend Engineer - Python, AI, Equity & Distributed Systems

WeDoTech; City Of London; Hybrid; GBP 131,000 - 160,000; Full time

Job summary

WeDoTech is seeking a Senior Backend Engineer in London to join a high-growth AI startup. You will design and implement high-performance Python services, build scalable distributed systems, and own backend architecture from design to production.

You'll collaborate with founders, customers and engineers to solve complex problems and shape the platform's evolution as data volumes and usage grow. This hands-on role offers ownership and impact in a fast-growing AI company.

Qualifications

• 6+ years of software engineering experience.
• Strong commercial Python experience.
• Experience designing and operating distributed systems.
• Experience with high throughput or data intensive applications.
• Strong understanding of performance engineering and scalability.
• Experience identifying and resolving production bottlenecks.
• Strong API and systems integration experience.
• Experience with Docker and Kubernetes.
• Experience within cloud environments.
• Understanding of asynchronous processing and messaging architectures.
• Strong observability, monitoring and SLOs.
• Experience owning systems from initial architecture through to production.

Responsibilities

• Design and build high performance backend services primarily in Python.
• Build scalable distributed systems and APIs.
• Develop pipelines capable of processing large volumes of complex enterprise data.
• Integrate with external APIs and legacy enterprise systems.
• Design asynchronous and event driven architectures.
• Identify and solve performance bottlenecks across production systems.
• Think about throughput, latency, cost and scalability.
• Build resilient systems capable of handling failures and unreliable dependencies.
• Define and monitor SLOs around performance, reliability and availability.
• Work with engineers, founders and customers to turn problems into pragmatic solutions.
• Own what you build from architecture through deployment and production.

Skills

Python

Distributed systems

APIs

Performance engineering

Observability/SLOs

Production systems

System ownership

Communication

Async processing

Data intensive workloads

6+ years experience

Tools

Docker

Kubernetes

Cloud environments

Job description

WeDoTech is seeking a Senior Backend Engineer in London to join a high-growth AI startup. You will design and implement high-performance Python services, build scalable distributed systems, and own backend architecture from design to production.

You'll collaborate with founders, customers and engineers to solve complex problems and shape the platform's evolution as data volumes and usage grow. This hands-on role offers ownership and impact in a fast-growing AI company.