Software Developer, Software Engineer, Backend Developer

Job Overview

At Mustard, we value quick delivery and real‑world impact over perfect code. If you thrive on solving problems quickly and enjoy a flexible, outcome‑focused culture, this role could be a great fit.

• Expand access to new liquidity providers using advanced web‑scraping and reverse‑engineering techniques.
• Develop and maintain low‑latency real‑time data feeds to support trading strategies.
• Enhance system visibility for our teams, providing insights into integration issues and improvements.

• Design and build impactful features that align with business goals, delivering high‑quality code that adds measurable value.
• Collaborate on code quality: review, test, and ensure functionality, maintainability, performance, and quality standards.
• Take ownership of production software, ensuring stability and addressing issues quickly.
• Collaborate cross‑team, partnering with traders and quants to design solutions to real business problems.
• Participate in out‑of‑hours support for our software systems.

• Languages:
  
  Python 3.10+, JavaScript/Type Script for frontend, Go for select infrastructure.
• Tools:
  Rabbit
  
  MQ, Kafka, Postgre
  
  SQL, Redis.
• Environment:
  Linux servers.
• Observability:
  Open Telemetry, Prometheus, Grafana, Zabbix.

• Strong background in software development with extensive experience in Python.
• A degree in Computer Science or a numerical subject from a top university.
• Exceptional communication skills, able to convey complex technical ideas clearly to technical and non‑technical audiences.
• Strong decision‑making abilities, adept at making thoughtful trade‑offs in implementation and architecture.
• Experience with web‑scraping and reverse‑engineering techniques, including working against bot‑protection tooling.

• Familiarity with building event‑driven systems.
• Comfort with Linux/Unix environments.
• Track record of driving successful cloud migrations, ideally to AWS, including setting up secure, scalable accounts and access structures.

• Competitive salary with significant bonus potential.
• Enhanced pension match with salary sacrifice option.
• Health insurance and life assurance.
• Sabbatical leave after five years.
• 33 days of annual leave (including bank holidays).

Mid‑Senior level

Full‑time

Engineering and Information Technology

London, England, United Kingdom