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- Tasks: Own and enhance a real-time Python trading system, ensuring performance and reliability.
- Company: Join a dynamic trading tech company with a focus on innovation.
- Benefits: Competitive salary, performance bonuses, and flexible remote work options.
- Why this job: Make a real impact in the fast-paced world of trading technology.
- Qualifications: 5+ years of Python experience and expertise in real-time systems required.
- Other info: Collaborate closely with the founder and enjoy high ownership of your work.
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) employer: Beamost Ltd
Contact Detail:
Beamost Ltd Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Software Engineer (Python)
✨Tip Number 1
Network like a pro! Reach out to folks in the industry, attend meetups, and connect with other engineers on platforms like LinkedIn. You never know who might have the inside scoop on job openings or can refer you directly.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially those involving real-time systems or performance engineering. This gives potential employers a taste of what you can do and sets you apart from the crowd.
✨Tip Number 3
Prepare for technical interviews by brushing up on your Python and system design knowledge. Practice coding challenges and be ready to discuss your past experiences with low-latency systems. We want to see how you think and solve problems!
✨Tip Number 4
Don’t forget to 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)
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 include specific projects where you've used it to build or improve production systems. We love seeing concrete examples of your coding prowess!
Highlight Collaboration Experience: We value teamwork, especially in a remote setting. Share instances where you’ve worked closely with others, particularly in engineering or product development, to show us how you can partner effectively with our founder and team.
Apply Through Our Website: Don’t forget to submit your application through our website! It’s the best way for us to keep track of your application and ensure it gets the attention it deserves.
How to prepare for a job interview at Beamost Ltd
✨Know Your Stuff
Make sure you brush up on your Python skills and real-time systems knowledge. Be ready to discuss specific projects where you've improved latency or reliability, as this role demands proven experience in performance-critical environments.
✨Showcase Your Ownership Mindset
Prepare examples that highlight your ability to take ownership of a codebase. Talk about how you've handled incidents, monitored system performance, and implemented fast debugging techniques when things went wrong.
✨Understand the Trading Landscape
Familiarise yourself with trading systems and market data pipelines. If you have experience with Interactive Brokers or similar APIs, be sure to mention it, as it will show you're well-versed in the domain.
✨Ask Insightful Questions
During the interview, don't hesitate to ask questions about the company's architecture and roadmap. This shows your genuine interest in the role and helps you gauge how you can contribute effectively to the team.