Senior Software Engineer - C# - (Hybrid Remote) in City of London
Senior Software Engineer - C# - (Hybrid Remote)

Senior Software Engineer - C# - (Hybrid Remote) in City of London

City of London Full-Time 90000 - 100000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Lead the digitalisation of global financial markets by building resilient systems.
  • Company: Join a global powerhouse in FinTech Infrastructure with a modern engineering culture.
  • Benefits: Competitive salary, performance bonus, hybrid work model, and top-notch healthcare.
  • Why this job: Make a real impact on the future of finance with cutting-edge technology.
  • Qualifications: Expertise in C#, .NET Core, and experience in financial services.
  • Other info: Dynamic team environment with opportunities for mentorship and career growth.

The predicted salary is between 90000 - 100000 £ per year.

On behalf of a global powerhouse in FinTech Infrastructure, we are seeking a Senior Software Engineer. Our client operates one of the largest financial networks, serving as the digital backbone for thousands of global financial institutions. This is a senior-tier appointment for an engineer who excels at building resilient, high-concurrency systems and wants to lead the digitalization of global financial markets.

The Technical Stack

  • Expert-level C# and .NET Core mastery.
  • Deep understanding of SOA (Service Oriented Architecture) and complex Object-Oriented design patterns.
  • Specialized knowledge of concurrency, asynchrony, and parallelism — essential for real-time transactional processing.
  • High proficiency in SQL Server, Web API design, and modern front-end fundamentals (HTML/CSS/JS).
  • A strict practitioner of TDD (Test Driven Development) and robust CI/CD processes.

Desired Innovations

  • Exposure to Azure ecosystems, Docker, and Kubernetes (AKS).
  • Enterprise systems like Azure Service Bus or NServiceBus.
  • Experience with Blockchain development or Cryptographic concepts is a significant plus.
  • TypeScript and Angular for responsive, data-heavy interfaces.

Your Impact

  • You will participate in defining the technology and process strategy, occasionally leading high-level innovation or software design initiatives.
  • Design, document, and communicate system solutions that balance high performance with security and cost-effectiveness.
  • Act as a "Technical Enabler," bridging the gap between deep engineering and business-led requirements while mentoring junior talent.
  • Drive the modernization of global financial infrastructure, replacing frictional legacy processes with fast, efficient, and scalable digital services.

Who You Are

  • You have a deep commercial background in Financial Services, Payments, or Transactional Systems. You understand the stakes of high-volume, regulated data.
  • You thrive in an Agile environment where team dynamics and peer reviews are taken seriously.
  • You can contextualize your technical work for non-technical stakeholders and have a passion for "big picture" system evolution.

Package & Culture

  • Salary: £90,000-£100,000 per annum + Performance-related Bonus.
  • A balanced Hybrid model out of a state-of-the-art Central London office.
  • Industry-leading pension, private healthcare, and a culture that prioritises professional growth.

Senior Software Engineer - C# - (Hybrid Remote) in City of London employer: Retelligence

Join a leading global FinTech powerhouse that champions innovation and professional growth in a modern, engineering-first culture. With a competitive salary and a balanced hybrid work model from a state-of-the-art Central London office, you will have access to industry-leading benefits including a robust pension and private healthcare. This is an exceptional opportunity for a Senior Software Engineer to make a significant impact on the digitalization of global financial markets while mentoring junior talent and driving technological advancements.
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Contact Detail:

Retelligence Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Software Engineer - C# - (Hybrid Remote) in City of London

✨Network Like a Pro

Get out there and connect with people in the FinTech space! Attend meetups, webinars, or even just grab a coffee with someone in the industry. You never know who might have the inside scoop on job openings or can put in a good word for you.

✨Show Off Your Skills

Don’t just talk about your experience; demonstrate it! Create a portfolio showcasing your projects, especially those involving C#, .NET Core, or any of the modern tech stacks mentioned. This will give potential employers a tangible sense of what you can bring to the table.

✨Ace the Interview

Prepare for technical interviews by brushing up on your coding skills and system design knowledge. Practice common interview questions related to concurrency, TDD, and SOA. Remember, it’s not just about getting the right answer but also how you approach problem-solving.

✨Apply Through Us!

We’ve got your back! Apply through our website for the best chance at landing that Senior Software Engineer role. We’re here to help you navigate the process and connect you with top employers in the FinTech sector.

We think you need these skills to ace Senior Software Engineer - C# - (Hybrid Remote) in City of London

C#
.NET Core
Service Oriented Architecture (SOA)
Object-Oriented Design Patterns
Concurrency
Asynchrony
Parallelism
SQL Server
Web API Design
HTML
CSS
JavaScript
Test Driven Development (TDD)
Continuous Integration/Continuous Deployment (CI/CD)
Azure
Docker
Kubernetes
Azure Service Bus
NServiceBus
Blockchain Development
Cryptographic Concepts
TypeScript
Angular
Agile Methodologies
Technical Leadership
Collaboration
Mentorship

Some tips for your application 🫡

Tailor Your CV: Make sure your CV reflects the skills and experiences that match the job description. Highlight your expertise in C#, .NET Core, and any relevant FinTech experience to catch our eye!

Craft a Compelling Cover Letter: Use your cover letter to tell us why you're the perfect fit for this role. Share specific examples of your past projects, especially those involving high-concurrency systems or cloud technologies.

Showcase Your Technical Skills: Don’t just list your skills; demonstrate them! If you’ve worked with Azure, Docker, or have experience in TDD, make sure to include concrete examples of how you've applied these in your previous roles.

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 this exciting opportunity!

How to prepare for a job interview at Retelligence

✨Master the Technical Stack

Make sure you brush up on your C# and .NET Core skills before the interview. Be ready to discuss your experience with SOA, concurrency, and TDD. Practising coding challenges related to these topics can really help you demonstrate your expertise.

✨Showcase Your Leadership Skills

Since this role involves technical leadership, prepare examples of how you've led projects or mentored junior engineers in the past. Think about specific situations where you bridged the gap between technical and non-technical stakeholders.

✨Understand the FinTech Landscape

Familiarise yourself with current trends in FinTech, especially around digitalisation and modernisation. Being able to discuss how your skills can contribute to the evolution of financial services will set you apart from other candidates.

✨Prepare for Cultural Fit

This company values a team-centric and Agile environment. Be ready to talk about your experiences working in teams, how you handle peer reviews, and your approach to collaboration. Highlighting your adaptability and strategic thinking will resonate well.

Senior Software Engineer - C# - (Hybrid Remote) in City of London
Retelligence
Location: City of London

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