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- Tasks: Own and enhance a high-performance Python trading application with real-time data processing.
- Company: Join a dynamic tech team focused on innovative trading solutions.
- Benefits: Competitive salary, performance bonuses, mostly remote work, and significant ownership.
- Why this job: Make a real impact on a live system while collaborating closely with the founder.
- Qualifications: 5+ years of Python experience and a strong background in low-latency systems.
- Other info: Enjoy a lean environment with excellent opportunities for influence and career growth.
The predicted salary is between 36000 - 60000 ÂŁ per year.
We’re expanding our engineering team and hiring a Senior Python Software Engineer to help own and develop an established trading-related application. The system runs in production, processes high-frequency real-time data, and needs careful performance engineering and disciplined testing to keep latency and reliability where they should be. You’ll 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.
Location: UK-based preferred
Working style: Mostly remote, occasional in-person days for planning/coordination
Support: Availability during core market hours when needed
What You’ll Do:
- Own and improve a production Python codebase that runs during market hours.
- Build and optimise real-time data pipelines (throughput, p50/p99 latency, jitter).
- Do profiling-driven performance work across ingestion → compute → messaging → 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 tradeoffs 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:
- Experience with trading, market data, or execution systems.
- Familiarity with Interactive Brokers TWS or other brokerage APIs.
- 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 Python Engineer in Watford employer: Beamost Ltd
Contact Detail:
Beamost Ltd Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Python Engineer in Watford
✨Tip Number 1
Network like a pro! Reach out to your connections in the tech world, especially those who work in trading or finance. A personal introduction can make all the difference when you're looking to land that Senior Python Engineer role.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your past projects, especially those involving real-time data processing or low-latency systems. This will give potential employers a taste of what you can bring to the table.
✨Tip Number 3
Prepare for technical interviews by brushing up on performance profiling and async programming. We know these are key skills for the role, so be ready to discuss your experience and tackle some coding challenges.
✨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, we love seeing candidates who take the initiative to connect directly with us.
We think you need these skills to ace Senior Python Engineer in Watford
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with Python and any real-time systems you've worked on. We want to see how your skills align with our needs, so don’t be shy about showcasing relevant projects!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Tell us why you’re excited about the role and how your background makes you a perfect fit for our team. Keep it conversational but professional – we love a bit of personality!
Showcase Your Problem-Solving Skills: In your application, mention specific challenges you've faced in previous roles and how you tackled them. We’re all about ownership and improvement, so let us know how you’ve made an impact in your past positions.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it’s super easy – just a few clicks and you’re done!
How to prepare for a job interview at Beamost Ltd
✨Know Your Python Inside Out
Make sure you brush up on your Python skills, especially around performance profiling and async programming. Be ready to discuss specific projects where you've optimised code or improved latency in real-time systems.
✨Showcase Your Production Experience
Prepare examples of how you've owned and maintained production systems. Highlight any incidents you've managed and how you ensured reliability and quick debugging during market hours.
✨Understand the Trading Landscape
Familiarise yourself with trading systems and market data. If you have experience with brokerage APIs like Interactive Brokers TWS, be sure to mention it. This knowledge will show your potential employer that you can hit the ground running.
✨Be Ready for Technical Challenges
Expect technical questions or coding challenges related to low-latency systems. Practice solving problems under time constraints, as this reflects the high-pressure environment you'll be working in.
