Python Engineer

Job description

Python Engineer – Institutional Trading Platform

Up to £140,000 Base + ~20% Bonus + Equity

London (Hybrid – 4 days/week)

No sponsorship available

We are an exclusive hiring partner for an institutional trading firm building the next generation of its core execution and order-lifecycle infrastructure.

This team owns systems that sit directly on the critical path of live markets. The mandate is to design, build, and operate low-latency, high-throughput trading services under strict performance and reliability constraints.

You’ll be part of a small, senior-leaning engineering group responsible for:

• Core Order Management Systems (OMS)
• Exchange gateway connectivity
• Market data ingestion
• Real-time risk
• Internal orchestration and tooling that supports live trading

These systems handle real capital, real counterparties, and real-time failure scenarios.

• Python (~80%) – core services, orchestration layers, tooling, and system glue
• Rust (~20%) – latency-critical paths and performance-sensitive components

Heavy use of:

• Concurrency & multithreading
• Network-level programming
• Distributed systems under load

Engineers are expected to reason deeply about latency, determinism, throughput, failure modes, and back-pressure.

This is not application-layer feature development.

The work is:

• Highly hands-on and ownership-driven
• Focused on systems where microseconds matter
• End-to-end: design → implementation → testing → production behaviour
• Pragmatic, with minimal process overhead and fast iteration cycles

Seniority

• 4 open roles ranging from Junior (2+ years) to Lead (6+ years)

Interview Process (3 Stages)

1. 60 min Video call – Engineering Manager
2. 90 min Video call – Technical deep dive with Tech Lead
3. 60 min Video call – Final cultural interview with C-Suite

If you’re interested in core trading infrastructure, low-latency systems, and technically demanding work, I’d be happy to share more details in a conversation.

Extra information

Status

Open

Education Level

Secondary School

Location

London Area

Type of Contract

Full-time jobs

Published at

18-02-2026

Profession type

Accountancy

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English