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.

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.

Own Keet’s long-term vision, strategy, growth, and execution as a private peer-to-peer messaging and calling platform. Lead product and engineering teams, manage sprint delivery and cross-functional dependencies, guide P2P architecture decisions, oversee voice/video quality, rapidly prototype with AI tools, and manage mobile and desktop releases. Present strategy to executives and the board while driving the product toward one billion users.

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.

Design, build, and operate resilient, secure GCP-based infrastructure for customer-facing SaaS. Own networking, CI/CD/GitOps, Kubernetes deployments, monitoring, autoscaling, incident response, and compliance. Collaborate cross-functionally, use AI/LLM tools to automate runbooks and diagnostics, and ensure high availability and performance.

Leads technical delivery of high-performance kdb+ solutions for financial institutions. Designs scalable architectures for billions of time-series data rows, collaborates with quants and traders, mentors developers, and owns application development, testing, support, and maintenance. Drives innovation across kdb+, q, and related technologies while translating business needs into performant code.