Mustard Systems Ltd.
Python Backend Developer

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Mustard Systems
At Mustard Systems, we leverage statistical modeling to dive into sports events and help us make informed predictions about future outcomes. By utilising our unique datasets, advanced statistical models, and custom-built software, we strive to accurately forecast sports results.
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.
What You’ll Work On
- Expand our access to new liquidity providers, through advanced web scraping and reverse engineering techniques.
- Develop and maintain low-latency real-time data feeds, based on the data extracted, to support trading strategies
- Enhance system visibility for our teams to provide insight into integration issues and improvements.
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.
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.
- Participate in Out of Hours Support for our Software Systems.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
See breakdownIt searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Core Tech Stack
- Languages: Python (Python 3.10+), JavaScript/TypeScript for frontend work, and Go for select infrastructure
- Tools: RabbitMQ and Kafka for messaging, PostgreSQL and Redis for data storage
- Environment: Linux servers
- Observability: OpenTelemetry, Prometheus, Grafana and Zabbix
Requirements
Must-Haves:
- Strong background in software development, with strong experience with Python.
- A degree in Computer Science or a numerical subject from a top university.
- 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.
- Experience with web scraping and reverse engineering techniques, including working against bot protection tooling.
- At least 3 years experience in software development


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Nice-to-Haves
- 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 account and access structures.
Benefits
Why join Mustard Systems?
- Hybrid working environment. We're in the office every Monday, Tuesday and Thursday, and work from home every Wednesday and Friday
- 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
- 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).
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
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