Senior .NET Engineer

Ocho; Belfast; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

A leading FinTech company in Belfast is seeking an experienced Senior .NET Engineer to design and develop high-performance solutions. You will work in a hybrid environment, contributing to architectural decisions and mentoring team members. The ideal candidate has over 5 years of experience and a passion for solving complex challenges. Competitive salary and benefits included.

Benefits

Competitive salary

Hybrid working model

Private healthcare

Generous holiday allowance

Qualifications

• 5+ years of commercial software engineering experience, ideally within .NET and modern distributed systems.
• Strong understanding of clean architecture, domain-driven design, and microservices.
• Experience with cloud deployments and performance optimisation.

Responsibilities

• Designing, developing and deploying high-performance .NET solutions within a cloud-native environment.
• Building modern microservices architectures using C#, .NET Core, and Azure.
• Contributing to architectural decisions and mentoring mid-level engineers.

Skills

.NET development

C#

Azure

Microservices

Job description

Senior .NET Engineer - FinTech Innovation | Belfast (Hybrid)

Are you ready to build the next generation of financial technology?

My client, a leading player in the global FinTech industry, is expanding rapidly in Belfast and is seeking experienced Senior .NET Engineers to be part of their exciting growth journey. This is your chance to work on high-impact systems that process complex financial data at scale, within a collaborative, engineering-driven culture.

What You'll Be Doing

• Designing, developing and deploying high-performance .NET solutions within a cloud-native environment.
• Building modern microservices architectures using C#, .NET Core, and Azure.
• Working closely with Product, DevOps, and QA teams to deliver secure, scalable applications.
• Contributing to architectural decisions and mentoring mid-level engineers within your team.
• Writing clean, testable, and maintainable code that drives innovation across the FinTech domain.

Tech Stack & Environment

• Languages: C#, .NET Core, ASP.NET
• Cloud: Azure (Functions, Service Bus, App Services)
• Databases: SQL Server, Entity Framework, and exposure to NoSQL a plus
• DevOps: CI/CD pipelines (Azure DevOps, GitHub Actions, or similar)
• Practices: Agile delivery, TDD/BDD, code reviews, and continuous improvement

About You

• 5+ years of commercial software engineering experience, ideally within .NET and modern distributed systems.
• Strong understanding of clean architecture, domain-driven design, and microservices.
• Experience with cloud deployments and performance optimisation.
• A passion for solving complex technical challenges and driving quality in everything you build.
• Excellent communication skills and a desire to contribute to a positive, collaborative engineering culture.

What's On Offer

• Competitive salary and annual bonus
• Hybrid working model - typically 2 days a week in the Belfast office
• Private healthcare, pension, and generous holiday allowance
• Clear progression paths - opportunities to move into Staff Engineer, Technical Lead, or Architecture roles
• The opportunity to work in a brand-new modern office with newest technology and a world-class engineering team

This is more than just a job - it's a chance to be part of something new. Belfast is fast becoming the heartbeat of this company's global engineering strategy, and they're looking for talented developers who want to help shape that journey.

If you have any further questions on the role, please feel free to reach out to Brendan McCrory directly.

Skills: .net c# azure aws