Senior Lead Software Engineer - Java & Python (Low-Latency)

JPMorgan Chase & Co.; Greater London; On-site; GBP 120,000 - 170,000; Full time

Job summary

JPMorganChase in London is seeking a Sr Lead Software Engineer (Java/Python) to help design, build, and deliver high-performance trading software within Digital Markets Execution Technology. You’ll contribute as a core technical member of an agile team, guiding architecture, coding, testing, and operations to meet ambitious objectives.

The role emphasizes secure, observable, and resilient systems, with leadership in code reviews, API design, and deployment across distributed environments.

Qualifications

• Formal training or certification in software engineering concepts and advanced applied experience in Java/Python.
• Hands-on experience delivering system design, application development, testing, and operational stability for mission-critical platforms.
• Advanced in one or more programming languages with deep hands-on expertise in Java (17+).
• Experience designing clean APIs and rollout strategies for distributed systems.

Responsibilities

• Executes and oversees end-to-end software solutions, engineering standards, architecture, and technical troubleshooting for trading systems.
• Designs and builds high-performance, latency-sensitive services with awareness of upstream/downstream dependencies.
• Develops secure production code and reviews code written by others.
• Leads technical analysis, estimation, planning, code reviews, architecture sessions, and retrospectives.

Skills

Java (17+)

Python

Spring/Spring Boot

Kubernetes

Linux

API design

CI/CD

Microservices

AI-assisted tooling

Security practices

Distributed systems

Code reviews

Tools

Docker

Kafka

MQ/Solace

FIX

CI/CD pipelines

Job description

JPMorganChase in London is seeking a Sr Lead Software Engineer (Java/Python) to help design, build, and deliver high-performance trading software within Digital Markets Execution Technology. You’ll contribute as a core technical member of an agile team, guiding architecture, coding, testing, and operations to meet ambitious objectives.

The role emphasizes secure, observable, and resilient systems, with leadership in code reviews, API design, and deployment across distributed environments.