Mustard Systems Ltd.

About the Company

We are a young fast growing company in London W6. We develop pricing models and use those models to provide various services to our clients who include renowned licensed bookmakers and professional gamblers.

Mustard Systems was founded in 2014 having spun out of a highly successful quantitative research and software business. With the experience from this great heritage combined with a young, aspiring and bright team, we are very well positioned to take advantage of market developments in both the short and long terms.

Listed Jobs

Company Name

Mustard Systems Ltd.

Job Title

Software Developer

Job Description

Job title: Software Developer Role Summary: Design, develop, and maintain low‑latency real‑time data feeds and web‑scraping solutions for liquidity providers. Own the entire software lifecycle—from architecture to production support—in a fast‑paced, outcome‑driven environment. Expactations: Deliver high‑quality code that drives measurable business value; collaborate cross‑functionally with traders and quants; participate in out‑of‑hours support; exercise independent decision‑making and thoughtful trade‑offs in implementation and architecture. Key Responsibilities - Build features aligned with business goals using Python, JavaScript/TypeScript, and Go. - Review, test, and maintain code quality across the team. - Own production stability, troubleshoot incidents, and provide rapid issue resolution. - Partner with trading and quant teams on cross‑functional projects. - Participate in out‑of‑hours support for mission‑critical systems. - Contribute to system observability using OpenTelemetry, Prometheus, Grafana, and Zabbix. Required Skills - Proficient in Python 3.10+; experience with JavaScript/TypeScript and Go. - Strong knowledge of web scraping and reverse engineering against bot‑protection mechanisms. - Experience with event‑driven architectures, RabbitMQ/Kafka, PostgreSQL, Redis, Linux. - Demonstrated ability in code review, testing, and production support. - Excellent written and verbal communication; ability to explain complex concepts to non‑technical stakeholders. - Sound decision‑making and trade‑off analysis in software design and implementation. - Minimum 3 years of professional software development experience. Required Education & Certifications - Bachelor’s degree in Computer Science or a quantitative discipline from a recognised university. - (Optional) Certifications in cloud technologies (AWS), containerisation, or observability tools.

London, United kingdom

Hybrid

Junior

02-12-2025