Top Tech Jobs & Startup Jobs in Belfast

Architect and operate scalable cloud and virtualized security demonstration platforms for global sales engineering teams. Automate realistic threat scenarios, self-service lab tooling, product integrations, and deployment workflows. Lead technical readiness for conferences and evaluations, resolve infrastructure incidents, enforce security governance, and coordinate multi-quarter initiatives across engineering, product, information security, and go-to-market teams.

Supports the Programme Management team by coordinating daily internal and external issues, maintaining customer and functional relationships, and helping resolve programme problems. The role requires detailed planning, knowledge of programme phases from inception through delivery, effective communication, and familiarity with company processes. Applicants must hold an HNC in Engineering or a business-related subject and have at least three years of relevant project management experience in an engineering, supply chain, IT, customer service, or programme environment.

Coordinates Professional Services operations across the UK and Ireland, maintaining project portfolios, forecasts, billing, revenue, utilization, capacity, margins, backlog, dashboards, and KPI reporting. Supports Sales-to-Services handoffs, PMO governance, risk escalation, leadership reporting, and cross-functional collaboration with project management, sales, finance, billing, and resource teams. The role also improves processes, data quality, and reporting efficiency.

Monitors and triages alerts, conducts open-source research, identifies online threats and exposed personal information, coordinates PII removal, documents findings, and prepares risk assessment reports. The role also involves social media monitoring, client updates, escalation of complex issues, and applying cybersecurity, privacy, and intelligence principles while working onsite with the Belfast intelligence team.

Own the product strategy and roadmap for Apex’s API gateway and observability platforms. Define capabilities such as traffic management, rate limiting, logging, metrics, traces, alerting, dashboards, and reporting. Partner with engineering teams to prioritize work, manage technical and commercial tradeoffs, define measurable outcomes, write requirements and strategy documents, maintain the Jira backlog, and communicate progress to technical and executive stakeholders.

Develop and maintain production software for large-scale, real-time advertising systems. Responsibilities include writing tested code, addressing features and bugs, supporting production services, collaborating across teams, and contributing to system architecture and design. The role emphasizes systems programming, scalability, low-latency performance, concurrency, memory management, and reliable enterprise server applications, with opportunities to develop production Rust skills.

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

Lead the design, development, architecture, deployment, and support of scalable full-stack financial applications for a trade-processing platform. Responsibilities include Java and Spring Boot development, REST APIs, microservices, technical documentation, test-driven development, incident management, root-cause analysis, and regulatory and security compliance. The role may also involve React or Angular frontend development and responsible use of AI tools.

Lead development of enterprise Java applications, microservices, REST services, and event-driven systems using Kafka. Design scalable solutions, optimize SQL, implement testing and CI/CD practices, maintain code quality, and solve complex technical problems. Mentor and manage application developers while collaborating with technology and product teams on cloud-native systems and container orchestration.

Leads enterprise stability governance for Citi’s global Production Management organization. Owns stability metrics, KPI and SLO frameworks, executive reporting, data analysis, risk mitigation, application improvement programs, and governance of critical stability artifacts. Drives AI-enabled automation, operational excellence, and cross-functional preventative initiatives while managing team priorities, senior stakeholders, escalations, and mentoring engineers and analysts.

Develop and maintain Java-based microservices using Spring Boot, RESTful services, SQL, and enterprise software engineering practices. Build scalable solutions, optimize queries, contribute to CI/CD pipelines, manage source code, uphold code quality, and implement comprehensive testing. Collaborate with application developers to solve complex technical problems and deliver reliable corporate action event platforms.

Leads product ownership for an Insights and Enterprise Reporting development pod. Defines, maintains, and prioritizes the backlog, including user stories, enablers, technical debt, urgent requests, acceptance criteria, and documentation. Represents business and customer needs, coordinates dependencies, supports sprint and system demos, contributes to non-functional requirements, and assists with product demand costing. Requires strong business analysis, stakeholder influence, technical communication, data-driven decision-making, and familiarity with Jira, Confluence, SDLC, Scrum, and SAFe.