Top Tech Jobs & Startup Jobs in Belfast

Student placement software engineering role developing Magnite’s advertising platform. Responsibilities include software development, quality assurance, test automation, deployment, and solving complex technical problems with experienced engineering teams. The role provides mentorship and exposure to a broad technology stack, including Java, Rust, Scala, JavaScript, Python, C++, SQL, Cassandra, Druid, Hadoop, and Kafka.

Software engineering student placement developing and testing a complex advertising technology platform. The role provides hands-on experience in software development, quality assurance, automation, deployment, and modern programming technologies. Students collaborate with experienced engineers, contribute production code, solve technical problems, and receive mentorship and professional development. The position is hybrid in Belfast and restricted to current Ulster University STEM students participating in the 2027 placement program.

Processes and reconciles daily purchase and sale transactions across equities, fixed income, and derivatives. Reviews trade exceptions, discrepancies, settlement issues, and posting errors; coordinates with internal teams, counterparties, and clients to resolve inquiries. Maintains regulatory and SLA compliance, performs supervisory oversight, provides operational metrics, and recommends process improvements.

Supports daily administration and execution of global Total Rewards and benefits programs. Responsibilities include employee inquiry support, benefits onboarding, vendor data transmissions, process documentation, communications, open enrollment assistance, invoice tracking, data checks, and compliance reporting. The role also supports identifying AI automation opportunities and requires attention to detail, confidentiality, adaptability, and proficiency with Google Workspace, Excel, or Workday.

As a Senior Site Reliability Engineer, you'll build resilient platforms, automate processes, mentor teams, and drive changes in a cloud-based environment.

Design, develop, modernize, test, deploy, and support full-stack enterprise applications using Java and modern frontend technologies. Own complex features end to end, troubleshoot performance and scalability issues, contribute to architecture and technical decisions, apply clean code and automated testing practices, and use AI tooling throughout the development lifecycle. Collaborate with product, QA, and UX teams, mentor junior engineers, document systems, and participate in Agile planning and process improvement.

Design, develop, modernize, test, deploy, and support full-stack enterprise applications using C# and .NET. Build backend services and frontend applications, troubleshoot complex issues, participate in architecture and code reviews, and champion clean code, automated testing, reliability, security, and AI-assisted development. Collaborate with product, QA, UX, and other stakeholders while mentoring junior engineers, documenting systems, and contributing to sprint planning and continuous improvement.

Build and maintain frontend software components using React, TypeScript, and WebGL. Responsibilities include API schema design, architectural and technology decisions, cross-team integration, code and design reviews, and improving system efficiency, scalability, and stability. The role also involves frontend testing, maintenance, and CI/CD within a hybrid Belfast-based team.

Lead quality engineering across multiple teams by building test frameworks, writing automated tests, defining test strategy, integrating CI/CD quality gates, and improving test reliability. Test backend services, APIs, front-end applications, cloud environments, and distributed systems. Mentor engineers, review code, develop test data, support performance testing, measure quality metrics, and collaborate cross-functionally to resolve customer issues and deliver reliable security products.

Own the strategy, roadmap, partner selection, integration, routing, and performance optimization for Tether Wallet’s fiat on-ramp and token swap experiences. Evaluate payment methods, providers, fees, conversion, compliance, and market coverage across global markets. Lead partner onboarding and collaborate with Legal, Compliance, Business Development, Engineering, Design, and expansion teams to deliver seamless USDT and XAUT purchasing. Track funnel KPIs, manage partner performance, and improve conversion and user experience.

Develop and deploy enterprise-scale public cloud solutions, including container fleet management services. Build automation, contribute to full-stack software development, improve cloud service consumption, and support service availability and reliability. Partner with cross-functional technology teams to execute Citi’s cloud strategy. The role requires hands-on expertise in AWS, GCP, software engineering, AI/ML technologies, CI/CD, distributed messaging, databases, and modern development practices.

Leads solution architecture strategy, roadmaps, and end-to-end design for scalable, secure, cloud-first services. Guides technology evaluations, requirements analysis, architecture documentation, and implementation using Azure, microservices, APIs, and enterprise software. Collaborates with stakeholders, product managers, technical teams, and senior leaders to align designs with enterprise architecture principles, user needs, and business objectives. Promotes Azure best practices, supports agile delivery, evaluates emerging technologies, and helps establish architecture standards and communities of practice.

Develop and maintain cash and exotic credit derivatives pricing and risk capabilities within Deutsche Bank’s Kannon platform. Build market and position analysis tools, develop quantitative models, and collaborate with Trading, Technology, and Operations to expand strategic analytics platforms. The role focuses on structured credit and credit solutions, including credit-linked notes, repacks, credit hybrids, and collateralized debt obligations.