At a Glance
- Tasks: Develop and enhance trading systems, tackling complex engineering challenges.
- Company: Leading global investment firm with a collaborative and ownership-driven culture.
- Benefits: Competitive salary up to £350k, hybrid work flexibility, and direct exposure to traders.
- Other info: Enjoy significant autonomy and visibility in a fast-paced trading environment.
- Why this job: Join a dynamic team where your engineering skills directly impact live trading operations.
- Qualifications: Strong experience in platform or trading systems engineering and proficiency in C#.
A leading global investment firm is hiring a Senior Platform Engineer to join its front-office Trading Systems engineering group in London. This is a highly technical engineering role focused on the development and evolution of the systems that underpin live trading activity across execution, order management, market connectivity, risk workflows, and operational trading infrastructure.
The position sits directly alongside traders and PMs, but this is fundamentally an engineering-heavy seat. The firm is looking for someone who enjoys owning complex systems, solving difficult workflow and platform problems, and operating close to the commercial heartbeat of the business.
The Role
- Work across a broad range of front-office platform engineering challenges, including:
- OMS / EMS development
- Execution workflow engineering
- Trading infrastructure reliability
- Market data integration
- Position and PnL workflows
- Risk and operational tooling
- Platform modernisation initiatives
- Internal front-office application development
The work itself is intentionally varied. At any given time, priorities may shift between:
- Greenfield engineering
- Refactoring and modernisation
- Workflow optimisation
- Platform scalability
- Production reliability improvements
- Front-office tooling development
This is not a passive maintenance role. The expectation is that engineers proactively identify weaknesses in systems and workflows, drive technical decisions, and take ownership of problems through to resolution.
The Environment
The engineering culture is lean, collaborative, and highly ownership-driven. Developers are expected to operate as genuine partners to the business rather than isolated technical resources. The strongest engineers in the team are commercially aware, technically decisive, and comfortable working directly with traders and PMs in fast-moving environments. The role offers significant autonomy and visibility for someone who wants responsibility and enjoys solving real operational and architectural challenges inside a live trading business. The environment is more heavily focused on platform engineering, workflow orchestration, systems integration, and operational robustness than ultra-low-latency optimisation.
What They're Looking For
- Strong platform or trading systems engineering experience within hedge funds, prop trading firms, or front-office banking environments
- Deep experience developing production systems in C#
- Prior exposure to OMS/EMS platforms, execution systems, market data infrastructure, or operational trading workflows
- Strong understanding of distributed systems, integrations, and production environments
- Engineers who naturally take ownership and operate with urgency
- Strong communication skills and confidence working directly with front-office stakeholders
- Individuals who enjoy solving technically and commercially meaningful problems
What Makes Someone Successful Here
- Think independently
- Take initiative without waiting for direction
- Care deeply about system quality and operational stability
- Communicate confidently with both technical and non-technical stakeholders
- Enjoy understanding the business impact behind what they build
- Thrive in environments with high visibility and accountability
Interview Process
- Recruiter Screen
- Technical Assessment (C#)
- Hiring Manager Interview
- Final Onsite with engineering and trading stakeholders
Additional Information
- 4 days per week in-office
- Hybrid flexibility typically on Fridays
- Direct exposure to traders and PMs
- Significant technical ownership and autonomy
- Broad exposure across front-office trading infrastructure
This is an opportunity for a strong engineer to join a highly visible front-office engineering environment where technical quality, ownership, and commercial impact are valued equally.
Senior Platform Engineer – Front Office Trading Systems | London - Up to £350k TC employer: Mondrian Alpha
Join a leading global investment firm in London as a Senior Platform Engineer, where you'll thrive in a collaborative and ownership-driven culture that values technical excellence and commercial impact. With significant autonomy and direct exposure to traders and PMs, this role offers a unique opportunity to tackle complex engineering challenges in a dynamic trading environment, while enjoying hybrid flexibility and a commitment to employee growth and development.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Platform Engineer – Front Office Trading Systems | London - Up to £350k TC
✨Tip Number 1
Network like a pro! Reach out to your connections in the finance and tech sectors. Attend meetups or webinars related to trading systems and platform engineering. You never know who might have the inside scoop on job openings!
✨Tip Number 2
Prepare for those technical assessments! Brush up on your C# skills and be ready to showcase your experience with OMS/EMS platforms. Practising coding challenges can help you feel more confident when it comes to the technical interview.
✨Tip Number 3
Showcase your ownership mentality! During interviews, share examples of how you've taken initiative in past roles. Highlight situations where you identified problems and drove solutions, especially in fast-paced environments like trading.
✨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 are proactive about their job search!
We think you need these skills to ace Senior Platform Engineer – Front Office Trading Systems | London - Up to £350k TC
Some tips for your application 🫡
Show Off Your Technical Skills:Make sure to highlight your experience with C# and any relevant trading systems you've worked on. We want to see how you’ve tackled complex engineering challenges in the past, so don’t hold back!
Tailor Your Application:Take a moment to customise your CV and cover letter for this role. Mention specific projects or experiences that align with the responsibilities listed in the job description. It shows us you’re genuinely interested!
Communicate Clearly:Since you'll be working closely with traders and PMs, it’s crucial to demonstrate your communication skills. Use clear language and avoid jargon where possible to show you can bridge the gap between technical and non-technical stakeholders.
Apply Through Our Website:We encourage you 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. Plus, it’s super easy!
How to prepare for a job interview at Mondrian Alpha
✨Know Your Tech Inside Out
Make sure you’re well-versed in C# and any relevant technologies related to OMS/EMS platforms. Brush up on your understanding of distributed systems and market data infrastructure, as these will likely come up during technical assessments.
✨Understand the Business
Familiarise yourself with how trading systems impact the business. Be ready to discuss how your engineering decisions can affect trading operations and overall performance. This shows that you’re not just a techie but also understand the commercial side of things.
✨Show Ownership and Initiative
Prepare examples from your past experiences where you took ownership of complex problems and drove them to resolution. Highlight situations where you proactively identified weaknesses in systems and improved them, as this aligns perfectly with what they’re looking for.
✨Communicate Effectively
Practice explaining technical concepts in simple terms, as you’ll need to communicate with both technical and non-technical stakeholders. Being able to articulate your thoughts clearly will demonstrate your confidence and ability to work closely with traders and PMs.
