Top Tech Jobs & Startup Jobs in Belfast

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.

Defines Rapid7’s technical vision and architecture for LLM and agentic AI systems across security products. Leads model strategy, fine-tuning, post-training, inference optimization, evaluation standards, and high-risk initiatives. Builds critical training and inference code, resolves complex technical trade-offs, mentors senior engineers, and influences product and platform strategy. The role requires deep expertise in transformer-based models, PyTorch, distributed training, context engineering, model evaluation, scalable inference, classical ML, and production AI systems.

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.

Supports the planning, development, and improvement of aerospace manufacturing processes, tools, technologies, and production systems. Responsibilities include continuous improvement, waste reduction, automation and digital manufacturing initiatives, industrialisation of new products, production problem-solving, data analysis, and cross-functional collaboration with engineering, quality, operations, supply chain, and production teams.

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.

Develop and deliver Java/Kotlin swap-processing software for Citi’s Strategic Swaps Platform. Responsibilities include automated testing with TDD, Agile development, CI/CD, technical analysis, system design, documentation, production support, reliability improvements, and collaboration with operations and business teams. The role also involves technical leadership, continuous quality improvement, and coaching junior developers.

Leads monitoring and testing of risk controls, including control design assessments, operational effectiveness testing, tool evaluation, reporting, and issue closure sustainability. Reviews and challenges control effectiveness, identifies monitoring gaps, supports risk governance processes, and recommends enhancements. Requires strong operational risk, compliance, audit, control management, analytical, communication, and decision-making skills, with 6–10 years of relevant experience.

Designs and optimizes CI/CD pipelines, containerized platforms, cloud infrastructure, and observability systems. Manages Kubernetes and OpenShift workloads, develops Helm charts, supports Linux automation, and improves production reliability through monitoring, SLOs, and SLIs. Collaborates with engineering and business stakeholders, enforces delivery security standards, resolves complex technical issues, and mentors junior and mid-level engineers.

Develop and test Java/Kotlin components for a strategic swaps platform within an Agile, CI/CD environment. Responsibilities include technical design, task analysis, documentation, production support, root-cause resolution, system enhancements, quality improvement, and collaboration with technical and business teams. The role also provides coaching to junior developers and contributes to architecture, coding, testing, debugging, and implementation standards.

Build and maintain Java/Scala ETL systems supporting financial regulatory reporting across global jurisdictions. Collaborate with business analysts and QA teams to translate requirements into strategic technology solutions. Responsibilities include architecture, design, code reviews, production support, application maintenance, regulatory and audit compliance, data security, and issue resolution. The role also involves supporting complex financial calculations and ensuring accurate, secure reporting data delivery.