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.

Provides technical leadership for PLC-based control, power, and thermal monitoring architectures. Designs scalable systems, selects frameworks and tools, guides software teams, integrates PLCs, HMIs, gateways, and SCADA with hardware, and establishes validation and compliance practices. Supports sales teams and customers through specification reviews, technical guidance, architecture development, design reviews, and strategic project development.

Drive manufacturing transformation across EMEA plants through Industrial Engineering, Lean, digitization, and automation. Lead shopfloor improvement, line balancing, capacity analysis, material-flow optimization, MES and robotics initiatives, production ramp-ups, and process stabilization. Coach plant teams, develop standard work, validate measurable business benefits, and deploy repeatable solutions across multiple manufacturing sites. The role requires approximately 50% travel across EMEA.

Leads Vertiv’s EMEA digital manufacturing transformation across multiple plants. Owns digital roadmaps, maturity assessments, technology pilots, Industry 4.0 and AI/ML initiatives, IT/OT integration, data governance, operational dashboards, and change management. Evaluates and scales solutions including MES, IoT, digital twins, predictive maintenance, computer vision, and paperless shop-floor tools. Partners with plant, IT, engineering, quality, and leadership teams to deliver measurable operational improvements. The role requires approximately 50% travel across EMEA.

Lead architecture and hands-on development of Java and Spring Boot microservices for enterprise vendor and market data ingestion, reconciliation, and REST API platforms. Design relational data models, transactional pipelines, APIs, and cloud-native deployments while mentoring engineers and shaping technical strategy. Collaborate with product and architecture teams, oversee full-stack integration with React and TypeScript interfaces, and promote AI-assisted development using tools such as Devin, GitHub Copilot, and Cursor.

Build and maintain high-throughput Java and Spring Boot microservices, REST APIs, data ingestion and reconciliation pipelines, relational data models, and transactional processing systems. Optimize SQL and enterprise integrations while applying TDD, CI/CD, containerization, and secure coding practices. Collaborate on React and TypeScript interfaces, use AI-assisted development tools, mentor engineers, and deliver features independently within a global agile team.

Designs and manages CI/CD pipelines, containerized platforms, cloud infrastructure, and observability solutions. The role uses Kubernetes, OpenShift, Helm, and monitoring tools to deliver reliable production systems. Responsibilities include evaluating technical problems, enforcing software delivery security, collaborating with stakeholders, and mentoring engineers. Required experience includes DevOps or software engineering, Linux administration, shell scripting, project delivery, and a relevant degree or equivalent experience. AWS, APM, and SLO/SLI experience are beneficial.

Designs and supports pilot and large-scale carbon capture plants, including process calculations, equipment sizing, P&IDs, process simulations, safety reviews, vendor document reviews, and FEED/EPC project deliverables. The role develops engineering philosophies, specifications, utility summaries, and design tools while supporting proposals, customer needs, project timelines, and business growth. Requires chemical engineering expertise, industrial process design experience, and knowledge of gas processing and CO2 removal technologies.