Senior Developer (C#, .NET Core) in Belfast

Senior Developer (C#, .NET Core) in Belfast

Belfast Full-Time 60000 - 80000 £ / year (est.) Home office (partial)
Ocho

At a Glance

  • Tasks: Design and build scalable backend services for high-throughput payment systems.
  • Company: Leading tech organisation in the payments sector with a collaborative culture.
  • Benefits: Flexible hybrid working, private healthcare, and pension scheme.
  • Other info: Join a dynamic team focused on continuous improvement and high standards.
  • Why this job: Influence critical financial systems and elevate your engineering skills.
  • Qualifications: Strong C# and .NET experience, with mentoring abilities.

The predicted salary is between 60000 - 80000 £ per year.

At a Glance

  • Role: Senior .NET Engineer within a high-throughput payments backend team
  • Location: Belfast, hybrid working
  • Type: Permanent
  • Stack: C# / .NET, SQL, CI/CD, Agile
  • Level: Senior with mentoring responsibility
  • Focus: Scalable, mission-critical payment systems processing millions of daily transactions

Who You'll Work For

Our client is a technology-led organisation operating at significant scale in the payments space. Their engineering teams build and maintain backend systems that process millions of transactions every day, where reliability, performance, and security are non-negotiable. They have a collaborative engineering culture with high standards, and a genuine focus on continuous improvement.

As a .NET Engineer, you'll be embedded in a backend engineering team responsible for a high-throughput payment platform.

  • Designing and delivering backend services across the payment platform
  • Contributing to architectural decisions and system design discussions
  • Building scalable, secure, and highly available distributed systems
  • Improving development processes and raising engineering standards
  • Supporting deployments across test and production environments
  • Mentoring junior engineers through code reviews and pair programming
  • Collaborating closely with product and engineering stakeholders

Your Impact

In this role, you'll have real influence. You'll help shape the architecture of systems that underpin critical financial operations at scale. Beyond the technical work, you'll play a key role in elevating the team around you, contributing to a culture of quality, accountability, and continuous improvement.

What We're Looking For

Essential
  • Strong, demonstrable experience with C# and .NET backend development
  • Proven ability to design and build scalable, production-grade web services
  • Solid SQL and relational database experience
  • Experience with automated testing and CI/CD pipelines
  • A firm grasp of software design principles and clean code practices
  • Comfortable working within Agile delivery environments
Desirable
  • Experience in payments, fintech, or other high-throughput transaction processing domains
  • Familiarity with cloud infrastructure and deployment tooling
  • Prior experience formally mentoring or supporting junior engineers

What's In It For You

  • Work on genuinely mission-critical systems operating at large scale
  • Strong engineering culture with high standards and collaborative ways of working
  • Real opportunity to influence architecture and technical direction
  • Flexible, hybrid working from Belfast
  • Private healthcare and pension scheme included

If you're interested or have any further questions on the role, please feel free to reach out to Eve Geddis directly on LinkedIn.

Skills: C#, Distributed Systems, Architecture, SQL, CI/CD, Database Design
Benefits: Medical Aid / Health Care, Pension Fund

Senior Developer (C#, .NET Core) in Belfast employer: Ocho

Our client is an exceptional employer, offering a dynamic and collaborative engineering culture that prioritises continuous improvement and high standards. As a Senior Developer in Belfast, you'll not only work on mission-critical payment systems but also have the opportunity to mentor junior engineers, shaping the future of the team while enjoying flexible hybrid working arrangements and comprehensive benefits including private healthcare and a pension scheme.

Ocho

Contact Details:

Ocho Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior Developer (C#, .NET Core) in Belfast

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Ocho or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Ocho.

Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Ocho.

Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Ocho that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Senior Developer (C#, .NET Core) in Belfast

C#
.NET
SQL
CI/CD
Agile Methodologies
Backend Development
Scalable Web Services

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Ocho.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Ocho and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at Ocho

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Ocho uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.