Software Developer

Mustard Systems is a team of roughly 65 people dedicated to developing market leading sports models and trading strategies. Applications of our research are widespread across multiple sectors including betting, insurance, finance and the media, as well as giving advice to coaches and owners of sporting teams. Our aim is to predict sport as accurately as possible, and we achieve this by combining large, rapidly changing datasets with home grown software and statistical models.

We enjoy a fast-paced, ever-changing environment, offering fresh challenges which are both rewarding and enjoyable. Our ambitions are high, aiming to create best-in-class systems in a highly competitive field. In the coming year, we will be working on expanding our trading strategies and data feeds.

What You’ll Work On:

• Develop and support real-time data feeds to support trading strategies
• Integrate with new liquidity providers and optimize existing connections
• Collaborate with quants, traders, and other engineers on trading strategies and analytics
• Gather data to improve predictive capabilities, including improving the queryability and quality of existing data.
• Enhance system visibility for our teams to make informed decisions

We work with an agile approach, following a flexible plan that adapts to new information and opportunities as they arise. Developers are a core part of this process, taking full ownership of their software throughout its lifecycle—from design and development to testing, review, and production support.

At Mustard, we value quick delivery and real-world impact over perfect code. If you’re an engineer who thrives on solving problems quickly and enjoys a flexible, outcome-focused culture, you’ll fit right in.

Key Responsibilities:

• Design and Build Impactful Features: Develop new features that align with and drive our business goals, delivering high-quality code that brings measurable value.
• Collaborate on Code Quality: Review and test code from teammates to ensure functionality, maintainability, performance, and quality standards.
• Support in Production: Take ownership of your team’s software in production, ensuring stability and quickly addressing any issues that arise.
• Cross-Team Collaboration: Work closely with other development teams on cross-functional projects, and partner with traders and quants to design and implement the best solutions to real business problems.

Core Tech Stack:

• Languages: Python (Python 3.10+), JavaScript/TypeScript for frontend work, and Go for select infrastructure
• Tools: RabbitMQ for messaging, PostgreSQL for data storage, Websockets for frontend communication
• Environment: Linux servers
• Observability: Prometheus, Grafana and Zabbix

What we’re looking for:

• Strong background in software development, ideally with Python.
• Exceptional communication skills, enabling you to convey complex technical ideas clearly to both technical and non-technical audiences.
• Strong decision-making abilities, with a knack for making thoughtful trade-offs in both implementation and architectural choices, balancing innovation and practicality.

Nice-to-Haves:

• Familiarity with building event-driven systems
• Comfort with Linux/Unix environments
• Experience working with JavaScript and/or TypeScript
• Knowledge of relational databases, including both querying and schema design.

Why join Mustard Systems?

• Work on cutting-edge systems in a competitive and innovative field.
• Collaborate with a smart, driven team, where your contributions directly impact business performance.
• Opportunity to drive the company’s technical direction and double its revenue in the next three years.

Comprehensive benefits, including:

• Competitive salary and significant bonus potential (up to 30%).
• 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).

We have a hybrid working approach at Mustard Systems. We enjoy working and collaborating together and require people to be in our Hammersmith office three days a week on a Monday, Tuesday and Thursday. If you require any additional flexibility, please let our hiring team know as part of the recruitment process.

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