principal infrastructure engineer jobs in Belfast

A leading global engineering firm in Belfast seeks a Principal Economics Consultant or Associate Director/Senior Associate to shape infrastructure investment and policy decisions. This role involves leading advisory projects across transport, energy, and housing, influencing national strategies and delivering measurable outcomes. The ideal candidate will combine technical excellence with...

📍 Remote | Full-time 👋 Overview We’re looking for a pragmatic Full Stack Engineer who can lead the evolution of our infrastructure while keeping systems simple, reliable, and maintainable. This is a remote role for someone who enjoys owning infrastructure decisions without stepping away from hands-on product development. Medify Engineering is a team of ten engineers across two teams, and...

You will play a key role in the delivery of infrastructure and workplace projects, supporting hybrid environments and contributing to the adoption of modern technologies that enhance security, resilience, and productivity. This is a hands-on technical role, suited to someone comfortable working across both on-premise and cloud platforms.

You will play a key role in shaping platform architecture, improving engineering standards, and supporting teams delivering critical systems across multiple regions.

Senior/Principal Software Engineer - Cloud Platform (Hybrid, Belfast) We're partnered with a global software company seeking a Senior Software Engineer to join their Cloud Platform team in Belfast. You'll be part of a group driving transformation across the manufacturing and engineering sector through cutting-edge cloud solutions. What you'll be doing: Designing and building new features for a...

You will define technical strategy, design scalable data systems, mentor senior engineers, and partner closely with product, engineering, analytics, and business leaders to transform strategic goals into robust, data-driven solutions.

You will have the flexibility you need to do your best work with hybrid work options.

You will help us foster a safe and respectful workplace, where we invite everyone to bring their whole selves to work using their unique talents, backgrounds and expertise to create transformational outcomes for our clients.

As a product-driven company founded by engineers, we know the value of a great engineering culture, and we're looking for a Principal DevOps Engineer to join a team built from the ground up on trust, teamwork and tight feedback loops. As a Principal DevOps Engineer you'll work collaboratively using a pragmatically-chosen modern tech stack (Kubernetes, AWS, Terraform, .NET) to help Gearset run a...

You will be a vital part of this evolution, contributing your expertise to our strategy and helping us redefine what services we offer our clients.

You will ensure buildings are designed to minimise fire risks, through contributing to the development of fire strategy reports, calculations and fire risk assessments.

You will be part of a global team building innovative, integrated technology that powers critical financial and analytical systems.

You will build and maintain automated testing frameworks, drive quality standards within the team, collaborate with software and data engineers, and ensure systems are thoroughly validated through unit, integration, and end-to-end testing.

MCS Group is thrilled to be partnering exclusively with fast-growing technology company in the energy sector. They are expanding their Belfast engineering team and are looking for a Staff Software Engineer to join and hit the ground running. The company builds a platform connecting businesses with external partners, helping large-scale operations work more efficiently and reliably. Day-to-day...

You will work closely with product, design, and engineering leadership to deliver scalable features, drive engineering best practice, and support the development of junior engineers.

You will design and build scalable backend services, APIs, and integrations, while working closely with Product and UX to scope features, refine requirements, and contribute to roadmap direction.

A leading tech company in Northern Ireland is seeking a Principal Dev Ops Engineer. This role focuses on building and maintaining scalable and secure infrastructure powered by AWS and Kubernetes. As part of a collaborative team, you'll ensure the seamless operation of critical production infrastructures while enabling continuous deployment strategies. Ideal candidates will have significant...

You will influence architecture and delivery end-to-end, working closely with architects, senior engineers and business stakeholders across regions. The role combines hands-on technical leadership with ownership of delivery, mentoring engineers and championing modern engineering practices across distributed, cloud-native systems.

Principal QA Engineer - Python Automation - Hybrid (Belfast) Role Overview As Principal QA Engineer, you will be the technical authority for automation strategy within a complex, distributed, low latency environment. You'll take ownership of evolving Liquidnet's automated testing ecosystem, shaping best practice, and introducing high impact Python driven automation across the SDLC. This role sits...

Principal & Staff Software Engineers At a glance Principal or Staff Software Engineer role on a mission-critical payments platform Lead engineers and influence architecture, design, and delivery Remote-first with a Belfast city centre office Strong salary, excellent benefits, and genuine technical ownership About the Company Our client is a global payment technology business operating at...

You will work on large scale platforms used daily across physical and digital environments, partnering closely with product, backend, and design leaders to shape long term frontend strategy.

You will remain hands on while providing architectural leadership, mentoring senior engineers, and ensuring high quality, scalable UI solutions are delivered consistently.

You will set technical direction, influence architecture, and lead engineering standards across complex Rates and FX platforms. This role suits someone who wants real impact, scale, and accountability, not just delivery. Working in an Agile environment, you will partner closely with architects, engineers, and stakeholders across regions to drive resilient, high-quality systems.

You will play a key role in defining and executing QA strategy, building robust automated testing frameworks, and ensuring high-quality delivery across back-end services, APIs and data pipelines.

Principal Front-End Engineer (React) Experience level: 10+ years Have you spent years building front-end systems that scale - and now want a role where your decisions genuinely shape how products and teams operate? My client is looking for a Principal React Engineer to take ownership of front-end architecture, set engineering standards, and act as a technical authority across multiple product...