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- Tasks: Own and enhance a real-time Python trading system, ensuring performance and reliability.
- Company: Dynamic trading tech firm focused on innovation and collaboration.
- Benefits: Competitive salary, performance bonuses, mostly remote work, and impactful projects.
- Why this job: Make a real impact in the fast-paced world of trading technology.
- Qualifications: 5+ years Python experience with real-time systems and strong performance profiling skills.
- Other info: Join a lean team with high ownership and influence over system design.
The predicted salary is between 70000 - 90000 £ per year.
We are hiring a Senior Software Engineer (Python) - Trading Systems to own and evolve a production options trading system. It runs during market hours, ingests real-time market data, and requires profiling-led performance engineering to keep p50/p99 latency, jitter, and reliability within tight bounds.
You will take meaningful ownership day-to-day, partnering closely with the founder and the engineering team to prioritise work, ship improvements quickly, and keep the system fast, reliable, and correct.
Who this is for
This role is for engineers who have built and owned real-time, performance-critical systems. It is not suitable for candidates whose experience is mainly web product development (frontend-heavy or CRUD backends). We are looking for proven experience with measuring and improving p99 latency/jitter and operating systems during time-critical windows. Must be based in the UK and have a legal right to work in the UK.
Location: UK-based
Working style: Mostly remote, occasional in-person days for planning/coordination
Support: Availability during core market hours required
What You’ll Do
- Own and improve a production Python codebase that runs during market hours.
- Build and optimise real-time market data pipelines (throughput, p50/p99 latency, jitter).
- Do profiling-driven performance work across ingestion, compute, messaging, and consumers.
- Improve reliability: freshness/staleness handling, safe degradation, back pressure, fault isolation.
- Strengthen developer leverage: replay/simulation tools, regression tests, and debugging tooling.
- Work with cloud infrastructure, deployment, monitoring, and incident response.
- Collaborate directly with the founder and engineering team on architecture and roadmap.
Essential Skills
- 5+ years professional Python experience; you’ve shipped and owned production systems.
- Built/owned a real-time / low-latency system (not batch ETL) with measurable performance goals.
- Strong understanding of async + multiprocessing trade-offs and performance profiling.
- Comfortable owning an existing codebase: refactors, tests, architecture improvements.
- Experience with messaging / event-driven systems and strong API/schema discipline.
- Production ownership mindset: incidents, monitoring, and fast debugging when it matters.
- UK-based preferred and able to support core market hours when required.
Desirable Skills
- Interactive Brokers (TWS/IB Gateway) or similar brokerage/execution APIs.
- Experience with trading, market data, or execution systems.
- Experience designing safety constraints/guardrails in automated systems.
What We Offer
- Competitive salary (negotiable) + performance-related bonus.
- Mostly remote, with some in-office collaboration days for coordination and planning.
- Lean environment, direct impact on a live system.
- High ownership and influence over system design and roadmap.
Senior Software Engineer (Python) in Leeds employer: Beamost Ltd
Contact Detail:
Beamost Ltd Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Software Engineer (Python) in Leeds
✨Tip Number 1
Network like a pro! Reach out to folks in the industry, attend meetups, and connect with potential colleagues on LinkedIn. You never know who might have the inside scoop on job openings or can put in a good word for you.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your work on real-time systems, performance improvements, and any cool projects you've tackled. This will give you an edge and demonstrate your hands-on experience.
✨Tip Number 3
Prepare for technical interviews by brushing up on your Python skills and understanding async/multiprocessing trade-offs. Practice coding challenges that focus on low-latency systems to impress the hiring team.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you're genuinely interested in joining our team and contributing to our trading systems.
We think you need these skills to ace Senior Software Engineer (Python) in Leeds
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with real-time, performance-critical systems. We want to see how you've tackled latency and reliability issues in the past, so don’t hold back on those details!
Showcase Your Python Skills: Since this role is all about Python, be sure to emphasise your 5+ years of professional experience. Include specific projects where you’ve owned and improved production codebases, especially in trading or market data contexts.
Highlight Performance Engineering Experience: We’re keen on your ability to measure and improve p99 latency and jitter. Share examples of profiling-led performance work you’ve done, and how it made a difference in your previous roles.
Apply Through Our Website: Don’t forget to apply through our website! It’s the best way for us to keep track of your application and ensure it gets the attention it deserves. We can’t wait to hear from you!
How to prepare for a job interview at Beamost Ltd
✨Know Your Stuff
Make sure you brush up on your Python skills, especially around performance profiling and real-time systems. Be ready to discuss specific projects where you've improved latency or reliability, as this will show you understand the core requirements of the role.
✨Showcase Your Ownership Mindset
Prepare examples that highlight your experience in owning production systems. Talk about how you've handled incidents, monitored performance, and made quick debugging decisions. This will demonstrate your readiness to take meaningful ownership in the new role.
✨Understand the Trading Environment
Familiarise yourself with trading systems and market data pipelines. If you have experience with Interactive Brokers or similar APIs, be sure to mention it. Showing that you understand the nuances of trading environments can set you apart from other candidates.
✨Ask Insightful Questions
Prepare thoughtful questions about the company's architecture, roadmap, and team dynamics. This not only shows your interest but also helps you gauge if the company aligns with your career goals. Plus, it gives you a chance to engage directly with the founder and engineering team.