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- Tasks: Lead a team to design and develop a cutting-edge software platform using C# and .NET.
- Company: Join a fast-growing Fintech with a strong leadership team and innovative projects.
- Benefits: Competitive salary, autonomy in your role, and opportunities for mentorship.
- Other info: Dynamic work environment with a focus on professional growth and collaboration.
- Why this job: Be part of a greenfield project and make a real impact from the ground up.
- Qualifications: 8+ years in software engineering with expertise in C# and .NET.
The predicted salary is between 43200 - 72000 £ per year.
New Year, new challenge? If you are a Lead or Senior software engineer with a track record of using C#, and the .NET framework we would love to talk to you. We have been retained by our London client to help them find a senior leader for their engineering team as they look to re-engineer a highly successful platform relied on by some of the biggest names in asset management and banking. Core to the solution is their selection of C# / .NET framework to build the next generation of their software.
This is a rare opportunity to join a greenfield project as the company looks to design their runaway success application from the ground up. New stack (C#, .NET) and new architecture - this represents a great chance to put your design and programming skills to work right at the start.
Our client is a successful Fintech, underwritten by P.E. investment, growing 30% YoY, which has a very strong balance sheet and highly focused and motivated leadership team.
We are looking forward to speaking to senior and lead C#, .NET engineers with the following profile:
- A minimum of 8 years of professional software engineering experience, with extensive experience working with C# and the .NET framework.
- Comfortable working in cloud environments; our client has selected AWS, but experience with other cloud technologies - Azure, GCP - is also of interest.
- Proven track record as a hands-on senior frontend engineer - you design and deliver production features while supporting team development.
- Strong software engineering fundamentals: Object-oriented programming, design patterns, SOLID principles, automated testing, CI/CD.
- API integration: Experience consuming REST APIs, handling asynchronous data, error handling, and loading states.
- Modern database knowledge: Strong SQL skills, database design, and optimisation.
You will be happy producing high-quality code and collaborating closely with key stakeholders, including Product. As a senior C# developer, you will also be comfortable guiding and mentoring more junior engineers. This is a role that comes with a high degree of autonomy and there is an expectation that you will be passionate about your craft and build that culture around you.
If this sounds like the move you are looking for in 2026, please get in touch with us and we would be happy to share further details with you.
Lead Software Engineer in London employer: The Difference Engine
Contact Detail:
The Difference Engine Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Lead Software Engineer in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the industry, attend meetups, and engage in online forums. You never know who might have the inside scoop on a Lead Software Engineer role that’s not even advertised yet.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially those using C# and .NET. This is your chance to demonstrate your expertise and passion for software engineering, so make it shine!
✨Tip Number 3
Prepare for interviews by brushing up on your technical knowledge and soft skills. Practice common interview questions and coding challenges related to C# and cloud environments. We want you to feel confident and ready to impress!
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets noticed. Plus, we’re here to support you every step of the way in landing that dream job as a Lead Software Engineer.
We think you need these skills to ace Lead Software Engineer in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with C# and the .NET framework. We want to see how your skills align with the role, so don’t be shy about showcasing your past projects and achievements!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you’re excited about this opportunity and how your background makes you the perfect fit for our client's greenfield project.
Showcase Your Leadership Skills: Since this is a Lead Software Engineer position, we’d love to see examples of how you’ve guided and mentored junior engineers in the past. Share specific instances where your leadership made a difference!
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 ensure it gets into the right hands quickly. Plus, we’re excited to hear from you!
How to prepare for a job interview at The Difference Engine
✨Know Your Tech Inside Out
Make sure you brush up on your C# and .NET framework knowledge. Be ready to discuss specific projects where you've used these technologies, and don't shy away from diving into the details of your design choices and coding practices.
✨Showcase Your Leadership Skills
As a Lead Software Engineer, you'll need to demonstrate your ability to guide and mentor junior engineers. Prepare examples of how you've supported team development in the past, and be ready to discuss your approach to fostering a collaborative environment.
✨Understand the Business Context
Since this role is within a Fintech company, it’s crucial to understand the industry landscape. Familiarise yourself with current trends in asset management and banking, and think about how your technical skills can contribute to the company's success.
✨Prepare for Problem-Solving Questions
Expect to face technical challenges during the interview. Practice coding problems and system design scenarios that reflect real-world applications. This will not only showcase your problem-solving skills but also your ability to think critically under pressure.