Senior Web Application Developer jobs in Belfast

You will work closely with Managers and Partners, taking ownership of key areas on site and progressing towards leading smaller audits.

You will have a truly global reach, which will provide you with new experiences and development opportunities right here in Belfast’s iconic Titanic Quarter. Check below to see if you have what is needed for this opportunity, and if so, make an application asap. Engineer the future of global finance.

You will have a truly global reach, which will provide you with new experiences and development opportunities right here in Belfast's iconic Titanic Quarter. Engineer the future of global finance. At Citi, our Tech team doesn't just support finance - we are helping to redefine it.

You will contribute to exciting projects in digital agriculture, ensuring the quality and reliability of our web-based systems.

You will independently take on the following responsibilities: Plan, implement, and execute automated tests for web applications (frontend, backend, and database) using Robot Framework BrowserLibrary or Cypress within a CI/CD pipeline.

On a mission to help people who have been diagnosed with chronic kidney disease, this start-up are looking to bring on a Senior TypeScript Developer, who’s fully embraced AI-assisted development. Their mission is to make life better for people suffering from kidney disease by building one of the first algorithm-based behavioural change programmes. The application that does this brings together...

You will be working in a fast-paced environment to develop new website themes and add new features in a complex Next. js-based codebase (including a CMS). This is a great opportunity for the right person to take on a challenging and broad role. Homeflow is operating on a fully remote basis but occasional travel will be required for our company meet ups (bi-annually at most in the UK).

🚀 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...

You will be a hands-on player-coach, owning outreach and qualification while also helping to design the BDR/SDR process, playbooks and best practices.

You will use modern tools (HubSpot, Clay, Instantly, Lemlist, etc.) and AI to build signal-based, multi-channel plays that generate qualified meetings and pipeline across both partners and direct prospects.

BRAND NEW ROLE - Senior Exec Level - Marine Geo Director of Business Development - Geotechnical Engineering & Geoscience Consulting About the Company Our client are a growing offshore geotechnical services and consulting unit, focused on delivering high-quality, technically robust solutions across the offshore, nearshore, and onshore environments. While offshore geotechnical investigations...

Salary: £40-£45k (DOE) Reporting to: Technical Director Location: Hybrid or fully remote (UK only) Role type: Full time Who we are We’re Field — a design-first Shopify Plus e-commerce agency working with premium, high-growth brands. We’re a small, senior, tight-knit team of designers and developers who genuinely enjoy working together, and our retention rate (both team and clients) reflects...

Position: Front End JavaScript Developer Reports to: Front End Development Team Lead Hours: 40 hours Location: 3 days in North London office (Monday – Wednesday) Salary: £60 - £80,000 + eligibility for performance bonus Start date: ASAP Purpose of the role: As a Front End Developer you will join one of our multinational Scrum teams to create state-of-the-art software solutions. In all...

You will report directly to the Deputy Director for Finance and Operations, one of two Deputy Directors responsible for the Corporate Operations Group, and lead the finance function for the department.

You will be a trusted advisor to key decision makers and provide regular updates to the senior team including the Permanent Secretary.

You must speak, write and be able to understand fluent English. - Deep knowledge and regular usage of Firebase suite, especially Firestore. - Strong proficiency in TypeScript and modern JavaScript (ES6+).

You must enjoy constantly learning and researching to improve your level of expertise.

About us Founded in 2008, CitNOW is an innovative, enterprise-level software product suite that allows automotive dealerships globally to sell more vehicles and parts more profitably. CitNOW’s app-based platform provides a secure, brand-compliant solution – for dealers to build trust, transparency and long-lasting relationships. CitNOW Group was formed in 2021 to unite a portfolio of 12 global...

Senior Tech Ops Engineer (Saturday - Wednesday + shift allowance) We have an opening for an ambitious IT professional to join our Technology Operations Command Centre, the hub of global technology operations at CME Group. This is a troubleshooting focused role, where the successful candidate will gain exposure to a wide range of the latest technologies across systems, networks and software in a...

You will be responsible for the entirety of the back end features of the products.

You will be in charge of building scalable backend services and awesome messaging queues.

You will be responsible for developing a Python-based back end platform that's handling 100,000+s of interactions daily.

You will design, develop, and maintain our platform’s backend infrastructure, focusing on multi-tenant architectures, security, and efficient LLM integration. This role requires a strong understanding of Python web frameworks, cloud services (particularly AWS), and modern AI approaches including working with agentic architecture.

You will be responsible for the entirety of the back end features of the products.

You will be in charge of building scalable backend services and awesome messaging queues.

You will be responsible for developing a Python-based back end platform that's handling 100,000+s of interactions daily.

You will be part of a global engineering team delivering innovative, integrated solutions that improve safety, efficiency, and performance across people, facilities, and assets.

You will contribute to scalable solutions deployed across on-premise, cloud, and edge environments.

About the Team: Data Solutions Technology strives to provide measurable competitive advantage to our business by delivering high quality, innovative and cost effective reference data technology and operational; solutions in order to meet the needs of the business, our clients, our regulators and stakeholders. Olympus is a next generation Data Fabric to streamline data sources across SMBF and...