senior frontend developer jobs in Belfast

Company Description Imaginaire is a boutique ecommerce agency based in Nottingham, specialising in ecommerce design and development, SEO, and PPC services. Focused on Shopify and Shopify Plus platforms, we help brands across the UK create tailored, high-quality headless ecommerce solutions. The Role We’re looking for a mid-level/senior frontend developer to join our ecommerce delivery team...

Frontend Developer - React / TypeScript About the Role We're partnered with a well-established SaaS company delivering innovative Business solutions to customers across the UK, Ireland and beyond. The team has built a reputation for exceptional customer service, technical excellence, and a genuine commitment to work-life balance. They're now looking for a Frontend Developer (React) to join their...

React / Next.js Developer – Contract (Outside IR35) Location: Remote (UK-based preferred) Contract Length: 2 months Contract Type: Outside IR35 Rate: £300 per day Start: ASAP Overview We're looking for an experienced React / Next.js Developer to join us on a short-term contract to help deliver and enhance a modern, high-performance web application. You'll be working closely with product...

Frontend Software Engineer (React) – Fully Remote (UK) 💷 Up to £85,000 + Benefits 🌍 Fully Remote (UK) 🚀 High growth company – Great Future prospects Build modern user experiences for data driven technology used at scale A fantastic opportunity to join a growing international technology business building next generation software that automates and streamlines complex data workflows. The...

Senior Frontend Engineer - Belfast (Hybrid) MCS Group is working exclusively with a global financial services organisation building out their engineering team in Belfast. We're looking for a Senior Frontend Engineer to help deliver business-critical platforms used across international markets. You'll work closely with architects and principal engineers, owning the design and build of modern...

Overview We're seeking a Senior Frontend Engineer with a strong React/TypeScript background, passionate about crafting exceptional AI product experiences. You'll own the user-facing layer of our next generation Developer Productivity platform at Citi, transforming complex AI capabilities—from chat interfaces to rich data visualizations—into intuitive, trustworthy experiences. You'll collaborate...

## For additional information, please review .We're seeking a Senior Frontend Engineer with a strong React/TypeScript background, passionate about crafting exceptional AI product experiences. You'll own the user-facing layer of our nextgeneration Developer Productivity platform @ Citi, transforming complex AI capabilities - from chat interfaces to rich data visualizations - into intuitive,...

Senior Backend Developer (.NET | AI-First SaaS Platform) Compensation: Competitive, based on location and experience Location: UK or Turkey (Hybrid – Office & Remote) Keepnet is an AI-driven SaaS platform experiencing strong, sustained growth in the UK with growing global momentum, helping organisations manage human cyber risk at scale. With Agentic AI live in production, Keepnet runs...

About Prighter Prighter is a fast-growing LegalTech company building productised services and SaaS solutions for compliance with data protection as well as AI & digital governance regulations. With the mission to enable companies around the world to comply with regulatory requirements for their digital business, our services and SaaS solutions guide our global clients through the increasingly...

🚀 About Webigence and Spark Travel Webigence has 25 years of experience crafting UX‑first, often highly complex software. Our engineers pair forward‑thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is anything but. Alongside a handful of long‑standing third‑party clients, we’re scaling our own SaaS...

Senior Software Developer Salary: £36,122 + £7,542 annual salary supplement Location: Belfast We are seeking an experienced Senior Software Developer to join a well-established in-house technology team supporting a large, complex organisation with critical digital services. This role offers the opportunity to work on a wide range of systems-from workflow-based database applications to highly...

MCS Group is delighted to be partnering with a leading global technology firm building a cutting-edge engineering hub in Belfast, focused on delivering innovative software solutions used worldwide. As part of an exciting growth phase, the Belfast office is seeking experienced Senior React Engineers to help design and develop next-generation web applications that drive critical business outcomes....

A global financial firm based in Belfast is seeking a Senior Frontend Engineer to enhance AI product experiences using React and TypeScript. This role entails collaborating with a dedicated team to deliver advanced user interfaces, optimizing developer productivity in a dynamic environment. Candidates should possess extensive experience in frontend technologies and a passion for innovation....

FrontEnd Engineer - Hybrid (Belfast) About the Company: My client is a global leader in market infrastructure, driving innovation through data solutions and digital transformation. Operating at scale and trusted worldwide, they are redefining how modern systems power global markets. Role Overview: My client is seeking a FrontEnd Engineer with strong experience in building modern, cloud-native...

Senior Python/Django Engineer - 100% Remote Role (Please note: candidates should only apply if they currently reside or plan to reside in Northern Ireland) Salary: Up to £90k base + package About the Company Join a hyper-growth, VC-backed SaaS company that's building a world-class engineering function in Northern Ireland. With a decade of proven success and a strong track record of innovation,...

Senior .Net Developer Location: Belfast (Hybrid) | Type: Full-Time | Permanent A leading global technology firm is seeking a Senior Software Developer to help manage and evolve its mission-critical trading systems. This role involves building scalable systems that directly impact market access on a global scale. What you'll do? Develop, enhance, and maintain complex systems using C# (.NET Core),...

Senior Java Developer - 100% remote. * Salary: up to £70k + bonus+ benefits. About the Company: Our client is a global technology company operating in the payments space. They're investing heavily in their engineering capability across Northern Ireland, with a focus on building modern, scalable platforms that support businesses in managing and growing their operations. Their engineering teams...

Senior .NET Developer Full-time | Belfast | Hybrid Salary: £50,000 - £65,000 MCS Group is delighted to once again partner exclusively with a growing solutions provider as they continue to expand their talented development team. This company delivers cutting-edge software solutions to a diverse range of clients across the UK and beyond. They are now seeking an experienced Senior Developer to take...

About the Company: Our client is a fast-growing global trading firm with deep expertise across traditional and digital asset markets. Built by technologists and financial engineers, their platforms are designed for scale, resiliency, and high performance. They are now establishing a new engineering hub in Belfast as part of a long-term investment to build core trading systems and infrastructure...

MCS Group is proud to be partnering with the Northern Ireland Assembly, in their search for a Temporary Senior Software Developer: The role: Plan and lead the analysis and development of sets of related user stories using Agile processes, including liaison with users throughout the organisation to create work item technical specifications; Contribute to the system design and have an understanding...