Backend Software Engineer – Python

Backend Software Engineer – Python

Location: London (in-office 4 days per week, non-negotiable) – Office is near Holborn EC1 – Please do not apply if you cannot get to the office 4 days (Mon-Thursday) per week

Type: Full-time

Reports to: Head of Engineering

Salary: £90,000-£105,000 + benefits

Are you a Senior Python Backend Engineer who thrives on designing and scaling complex systems? Do you enjoy working on data-intensive platforms involving real-time pipelines, streaming architectures, and graph-based services?

This is a hands‑on role within a small, research‑driven engineering team working on high‑complexity systems. You will take ownership of key components from architecture through to production, while contributing to the overall technical direction.

Key Responsibilities

• Design, build, and own backend services and data pipelines in Python
• Develop and operate streaming systems using Kafka or similar technologies
• Work with graph‑based data structures and algorithms to support analytics and decision‑making
• Build reliable, scalable systems that process real‑time data from distributed edge devices
• Lead technical decisions across architecture, tooling, and system design
• Collaborate with data scientists and ML engineers to deploy models into production
• Mentor engineers and contribute to engineering best practices
• Improve observability, monitoring, and incident response processes
• Write maintainable, well‑tested code and contribute to code reviews

Requirements

• In depth experience of building and operating backend systems in production
• Strong proficiency in Python
• Experience with streaming systems (Kafka, Pulsar, or similar)
• Familiarity with graph data structures and algorithms
• Experience working with databases (MongoDB or similar)
• Solid understanding of distributed systems concepts and trade‑offs
• Proven experience owning systems end‑to‑end
• Experience with Git and collaborative development workflows
• Ability to make independent technical decisions and clearly communicate trade‑offs
• Comfortable working in a small, high‑ownership team environment

Compensation & Benefits

• Private health and dental coverage
• 25 days holiday
• Enhanced parental leave
• High‑quality hardware
• Additional perks (workspace benefits, team events, and more)

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