At a Glance
- Tasks: Design and build core platform components for trading systems.
- Company: Dynamic fintech firm revolutionising analytics for institutional clients.
- Benefits: Competitive salary, hybrid work model, and opportunities for professional growth.
- Other info: Collaborate closely with traders and quants in a fast-paced, innovative setting.
- Why this job: Make a real impact in a high-stakes trading environment with cutting-edge technology.
- Qualifications: 5+ years in platform engineering with strong Python skills; finance knowledge is a plus.
The predicted salary is between 70000 - 90000 £ per year.
A growing fintech business building advanced analytics and execution technology for institutional clients across the derivatives space. Their platform is used by leading hedge funds and asset managers to support relative value, volatility, and macro trading strategies. The environment combines strong engineering standards with close interaction between trading, research, and technology teams.
This is a senior engineering technology role focused on the core analytics platform that underpins pricing, screening, and execution workflows. You’ll play a key part in designing and evolving production systems used by traders, quants, and portfolio managers, with ownership across reliability, scalability, and performance.
The role would suit someone with strong platform engineering instincts who enjoys building robust systems in fast-moving trading environments. Direct derivatives knowledge is helpful, but strong engineering capability is the bigger priority.
What you will do:
- Design and build core platform components including pricing services, APIs, and data pipelines
- Develop scalable ingestion and processing systems for market, macro, and time-series data
- Build internal tooling that improves how analytics and trading signals are developed, tested, and deployed
- Own the full software lifecycle across design, coding, testing, monitoring, and continuous improvement
- Create performant screening and trade discovery tools
- Work closely with traders and quants to turn analytical requirements into production systems
- Improve observability, deployment processes, and developer experience across the platform
What you will need:
- Strong software engineering fundamentals across architecture, design, and quality practices
- 5+ years’ experience in platform engineering, quant development, data engineering, or software engineering within financial services
- Strong Python experience in production environments
- Exposure to C++ or Rust would be beneficial for performance-sensitive components
- Experience building data infrastructure such as APIs, pipelines, and time-series systems
- Good understanding of financial markets, ideally rates or derivatives
- Strong communication skills and ability to work across engineering, research, and trading stakeholders
Why consider it:
- High-impact role working directly on trading-critical systems
- Strong blend of engineering depth and business exposure
- Close collaboration with quants, traders, and portfolio managers
- Opportunity to shape a growing platform in a high-performing fintech environment
Contact Ciara Clarke at Harrington Starr with your CV for a confidential discussion.
Senior Python Developer in City of London employer: Harrington Starr
As a Senior Python Developer at this innovative fintech firm in London, you'll thrive in a dynamic hybrid work environment that champions engineering excellence and collaboration. The company offers a unique opportunity to work closely with traders and quants, driving impactful projects that enhance trading systems while fostering your professional growth through exposure to cutting-edge technology and financial markets.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Python Developer in City of London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Harrington Starr or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
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✨Tap into Online Developer Communities
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We think you need these skills to ace Senior Python Developer in City of London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Harrington Starr.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Harrington Starr and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Harrington Starr
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Harrington Starr uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
