Senior C# WPF Developer - PnL and Risk team

MARGO; City Of London; On-site; GBP 65,000 - 90,000; Full time

Job summary

A leading financial institution is seeking a Senior C# WPF Developer to build and enhance high-performance desktop applications. The role requires 6+ years of experience in a trading environment, deep expertise in WPF and C#, and a collaborative mindset. You will work closely with trading desks and contribute to compliance standards while participating in Agile processes. This position offers opportunities for growth in an inclusive work environment.

Benefits

Equal employment opportunities

Inclusive work environment

Qualifications

• 6+ years’ experience building WPF C# desktop applications in a high-performance trading environment.

Responsibilities

• Build and enhance high-performance WPF C#.
• Work closely with trading desks and global infrastructure teams.
• Participate in sprint planning and status reporting.
• Develop unit tests and automated test suites.

Skills

Deep expertise in WPF

Deep expertise in C#

Agile delivery mindset

Systematic reasoning

Continuous learner

Education

Degree in Computer Science or related field

Job description

MARGO is partnering with a leading financial institution to find a Senior C# WPF Developer with experience in Risk and Profit and Loss. The knowledge of Greeks is important in this role.

💼 What you’ll do:

• Design & Development: Build and enhance high-performance WPF C#.
• Collaboration & Delivery: Work closely with trading desks, pricing heads, and global infrastructure teams.
• Participate in sprint planning, estimation, and regular status reporting.
• Maintain accurate technical documentation, topology diagrams, and release records.
• Quality & Compliance: Develop unit tests and automated test suites.
• Follow all legal, regulatory, and internal compliance standards (e.g. market‑abuse regulations).
• Contribute to change‑management processes, ensuring minimal business disruption.

🛠 Tech stack & skills:

• Deep expertise in WPF and C#.
• Agile delivery mindset; rapid prototyping and iterative improvement.
• Systematic reasoning, transparency, and accountability.
• Ability to juggle competing priorities with a solutions‑driven attitude.
• Continuous learner: eager to adopt new technologies and share insights.

🧠 Technical fit – what we’re looking for:

• Degree (or equivalent) in Computer Science, Engineering, Mathematics, or related field.
• 6+ years’ experience building WPF C# desktop applications in a high‑performance trading environment.

💡 What’s next?

First meeting: You will meet with a Talent Acquisition Manager and a member of the executive committee to discuss your background, professional goals, and learn more about MARGO and the opportunities we offer.

Challenge yourself: Participate in commercial negotiation simulations with one of your future managers, who will also provide feedback based on their experience.

Final motivation interview: You will meet MARGO’s partners to confirm our mutual fit and discuss your vision and aspirations. If you’re looking to take on more responsibilities by managing your Business Unit and contributing to the growth strategy of a company that values its human capital.

APPLY NOW

As an employer, MARGO offers equal employment opportunities regardless of gender, ethnicity, religion, sexual orientation, social status, disability, or age. MARGO is committed to fostering an inclusive work environment that reflects the diversity of its teams, and several actions are taken daily to achieve this!