126 to 150 of 165 Software Engineering Jobs in Belfast

Security-Focused Software Engineer: Cryptography & Quantum

Location
Belfast, Northern Ireland, United Kingdom
technology company in Northern Ireland is seeking a Software Engineer with 2-4 years of experience in software development. You will collaborate with firmware teams to develop advanced security solutions, create specifications, and ensure functionality through testing. A degree in engineering or computer science is required, along ...

Software Engineer, Java Backend

Location
Belfast, Northern Ireland, United Kingdom
About the job Software Engineer, Java Backend Job Description: Location: On-site, Hybrid. Start date: As soon as possible. Languages: Fluent in English. Join the Mineo Team Were Hiring! At Mineo, we are creating the future of recruitment with an innovative platform powered by artificial intelligence. Our AI-driven … fully remote team and help shape the future of hiring with cutting‐edge technology. Position: Senior Site Reliability Engineer (Hybrid) Your Role: As a Software Engineer Java Backend at Mineo, you’ll be part of a dynamic team working to enhance our AI‐powered platform. You will contribute ...

Senior Software Engineer - Python/C# for Cloud Integration

Location
Belfast City District, Northern Ireland, United Kingdom
Proofpoint is seeking a Senior Software Engineer to join the XFI team within the Cloud Integration Group. You’ll help integrate threat defence software with major email platforms, scale services, and advance with Microsoft and Google integrations. You’ll work in a fast-paced, security‐conscious environment, delivering ...

Senior Software Engineer - Quantum-Safe & AI-Driven Cloud

Location
Belfast City District, Northern Ireland, United Kingdom
Arqit Limited, a global pioneer in quantum-safe encryption, seeks engineers to join a fast-moving product team. You will contribute to scalable enterprise software, mentor peers, and apply AI tooling across design to deployment. The role involves customer interaction, agile delivery, and ensuring system resilience. Candidates should have ...

Software Engineer - Azure Cloud & AI-Driven Apps

Location
Belfast City District, Northern Ireland, United Kingdom
Intapp Belfast is seeking a Software Engineer to join the Belfast development team. You will work with Product and Engineering Managers to deliver new features, while building scalable software and cloud solutions. The role requires C#, .NET Framework/Core, and web tech like React or Angular ...

Remote Software Engineer II – POS Integrations (C#/.NET)

Location
Belfast City District, Northern Ireland, United Kingdom
hiring a Software Engineer II for the In-Store team, focused on POS integrations and reliability within the Olo ecosystem. This fully remote role supports a Belfast NI hub and an experienced squad of 8 engineers led by an Engineering Manager. You will work with .NET/C# ...

AI Native Software Engineer: Scale AI & Enable Change

Location
Belfast City District, Northern Ireland, United Kingdom
Aflac Northern Ireland is seeking an AI Native Software Engineer to help define how AI is used across the organisation. You will work across product, engineering and architecture to design, build and deploy software at pace, engineering the context and steering that enables AI models … deliver secure, scalable applications. This role focuses on AI facilitation, responsible usage, and enabling engineering teams to adopt AI powered workflows. #J-18808-Ljbffr ...

Senior Software Engineer - Billing Platform (Hybrid)

Location
Belfast City District, Northern Ireland, United Kingdom
Allstate NI is seeking a Product Engineer to help build the next generation of billing solutions. You will design, build, and operate software products powering critical billing experiences across cloud services, automation, and scalable systems. Responsibilities include contributing to architecture, executing strategy with customer needs in mind, and coaching ...

Senior Software Engineer - Safety-Critical Systems

Location
Belfast City District, Northern Ireland, United Kingdom
Expleo is seeking Software Engineers to join our Belfast team, delivering high-integrity software for safety-critical domains. You’ll design, develop, test, and integrate software across regulated environments, with training and mentorship for newcomers to safety-critical engineering. Experience in defence, aerospace, or similar industries ...

Hybrid Senior Full-Stack Engineer - AWS Fusion Platform

Location
Belfast City District, Northern Ireland, United Kingdom
ICAP Group in Belfast is seeking a Senior Software Engineer (Full Stack) to join a new AWS-enabled Fusion Platform team. You will design, develop, test and deploy software across frontend and backend, collaborating with AWS and other engineers. You will mentor juniors, own features ...

Engineer II

Location
Belfast City District, Northern Ireland, United Kingdom
quality, scalable code. You will spend your time technically hands-on, designing, coding, testing your code and working with the product team and your engineering peers on requirements and design discussions. If this sounds like you, or the engineer you want to be, we want to hear from … practical/industry experience. ****Nice to Haves:**** ● Experience working in a Linux environment.● Familiarity with networking protocols.● Desire to work in an environment where software engineers are full participants in shaping the product and the business.● Creative problem-solver who can draw on an array of expertise and technology ...

Backend Software Engineer – Python/Flask (TimeKeeper)

Location
Belfast City District, Northern Ireland, United Kingdom
Bright Software Group in Belfast is seeking a backend-focused Full Stack Software Engineer to strengthen the TimeKeeper platform. The role centres on Python-led development, API design and data layer work across web and mobile apps. You'll join a collaborative team, learn new tools quickly ...

Java Software Engineer — Hybrid, AI-Driven Fintech

Location
Belfast City District, Northern Ireland, United Kingdom
Harrington Starr invites applications for a Software Engineer in Belfast to join a leading global fintech software company. You will contribute to modernising systems, with strong Java backend and AI-focused initiatives, while engaging with front-end and back-end teams in a hybrid setup. The role offers ...

Principal Software Engineer - Remote, AI-Driven Impact

Location
Belfast City District, Northern Ireland, United Kingdom
Group in Northern Ireland is establishing a new engineering presence and seeks a Principal Software Engineer who enjoys building software, solving complex problems, and leveraging modern AI tools to improve workflows. This senior Individual Contributor role offers genuine ownership, technical autonomy and a chance to shape … growing engineering team. The position is nearly fully remote with occasional in-office days in NI. #J-18808-Ljbffr ...

Senior Software Engineer – AI-Driven SaaS (Hybrid Belfast)

Location
Belfast City District, Northern Ireland, United Kingdom
Group is partnering with a growing Belfast product company to recruit a Senior Software Engineer. You will own features across backend services and frontend interfaces, build APIs and cloud-based services, and contribute to system design. The role embraces AI and learning across languages and tools, with strong emphasis ...

Frontend Software Engineer (Vue/TypeScript) – Azure Platform

Location
Belfast City District, Northern Ireland, United Kingdom
Regulatory Ltd. is expanding its Belfast-based technology team and seeks an experienced Frontend Software Engineer. You will build intuitive, high-performing user interfaces and collaborate with Product Managers, Designers and AI Engineers to translate user needs into reliable software. The role offers opportunities to contribute to backend services ...

Principal Software Engineer

Location
Belfast City District, Northern Ireland, United Kingdom
/Turborepo monorepoDrive technical strategy for the platform — evaluate new tools, plan migrations, and make build-vs-buy decisions with clear rationaleSet and enforce engineering standards: testing strategy (Vitest, Playwright, MSW), code quality (Biome, Knip, dependency-cruiser), and observability (Grafana Faro, OpenTelemetry)Design solutions for complex problems: real-time ...

Principal Software Engineer

Location
Belfast City District, Northern Ireland, United Kingdom
monorepo Drive technical strategy for the platform — evaluate new tools, plan migrations, and make build-vs-buy decisions with clear rationale Set and enforce engineering standards: testing strategy (Vitest, Playwright, MSW), code quality (Biome, Knip, dependency-cruiser), and observability (Grafana Faro, OpenTelemetry) Design solutions for complex problems: real-time ...

Senior Full-Stack Java Engineer — AI‐Driven Backends

Location
Belfast City District, Northern Ireland, United Kingdom
Screen is seeking a Senior Full Stack Software Engineer (Java) to join our engineering team in Belfast. You will design, develop, and evolve backend services and frontend applications across our enterprise product suite—a hands‐on role blending new feature development with modernising complex, established codebases. … driven engineering organisation, this role expects you to use AI tooling by default across the full development lifecycle, from design to testing and deployment. #J-18808-Ljbffr ...

Senior Backend Engineer - Scalable SaaS & AI Security

Location
Belfast City District, Northern Ireland, United Kingdom
Proofpoint is seeking a highly motivated Sr. Software Engineer to join the Threat Response product engineering team. You will design distributed systems, tackle scalability challenges, and build high-performance backend services operating at scale. Key requirements include extensive enterprise/SaaS development, strong Java/Python skills ...

Fintech Full-Stack Engineer: Build Tokenization APIs

Location
Belfast City, Northern Ireland, United Kingdom
ctrl-alt.co in Belfast City is looking for a Software Engineer to join their team, focusing on tokenization. You will design, build, and maintain high-performing software solutions while mentoring others. The role requires 3+ years of experience with TypeScript/JavaScript and collaboration within development teams. This ...

Senior Backend Engineer — 35-Hour Week, AI Tools

Location
Belfast City District, Northern Ireland, United Kingdom
Group is helping a growing Belfast team recruit a Senior Software Engineer. You will play a central role in a major platform programme, owning complex integrations and guiding the platform's future. The role focuses on full-stack development with a backend lean, using React, Ruby … offers significant ownership within an expanding Belfast team, with opportunities to work with US engineering counterparts and incorporate AI coding assistants throughout the development lifecycle. #J-18808-Ljbffr ...

AI Strategy Lead & Principal Software Engineer

Location
Belfast City District, Northern Ireland, United Kingdom
Global Payments is seeking a Principal Software Engineer and AI thought leader to define and drive the AI strategy across the Integrated engineering organisation. You will provide technical vision, strategic direction, and practical leadership to deliver AI-enabled capabilities that improve customer experiences, accelerate productivity, and strengthen resilience. ...

Senior Software Engineer — Scalable Backend & APIs

Location
Belfast City District, Northern Ireland, United Kingdom
Bazaarvoice is a global software company building the future of product discovery. We are seeking a seasoned software engineer to join the C&C team and help evolve our consumer app used by millions worldwide. Collaborate with cross-functional teams to deliver scalable backend services, APIs and dashboards. ...

Associate Software Engineer — MedTech SaaS, Hybrid

Location
Belfast, Northern Ireland, United Kingdom
MedTech company is looking for an Associate Software Engineer based in Belfast, Northern Ireland, to join their engineering team. The successful candidate will work with a modern cloud-native stack, contributing to the development of SaaS features that enhance patient care. This hybrid role offers the opportunity ...