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.

Design electrical building services systems for commercial, healthcare, education, residential, industrial, and public infrastructure projects. Prepare calculations, specifications, reports, and design documentation; coordinate multidisciplinary designs; support projects from concept through handover; attend client and site meetings; ensure regulatory compliance; solve technical challenges; and mentor junior engineers while meeting quality, budget, and schedule requirements.

Leads the electrical engineering discipline across healthcare, education, and school building-services projects. Provides technical governance, design review, compliance oversight, and delivery leadership across all RIBA stages. Oversees electrical systems including LV/HV distribution, lighting, fire alarms, emergency systems, security, ICT, and BMS/BAS. The role also develops teams, supports recruitment and succession planning, drives sustainable design and innovation, and serves as a senior client-facing technical expert.

Advises individuals, families, entrepreneurs, landowners, and international clients on private client matters, including wills, probate, estate administration, trusts, tax structuring, succession planning, and wealth preservation. The role involves managing client relationships, collaborating across tax, real estate, and corporate teams, mentoring junior lawyers, and supporting business development and networking activities.

Supports private client legal matters involving wills, estate planning, probate, estate administration, trusts, and succession planning. Responsibilities include drafting routine legal documents, conducting legal research, liaising with clients and professional contacts, assisting fee earners, maintaining case files, and managing confidential information in accordance with regulatory requirements.

Develop and maintain high-quality, scalable software applications across multiple application layers. Apply security, performance, and development best practices; contribute to architecture, estimation, product planning, and requirements; make technical decisions; troubleshoot applications; and mentor junior engineers. The role also involves collaboration with technical and non-technical stakeholders, knowledge sharing, and evaluating cloud platforms and modern delivery practices.

Leads technical architecture and software design for modern multi-tier applications. Owns architecture, estimation, product planning, requirements, and non-functional concerns while advising customers on technical decisions. Uses public cloud platforms such as AWS and Azure, communicates designs clearly, and makes decisions in fast-paced delivery environments. Manages, coaches, and develops team members, supporting performance and career growth.

As a Senior Platform Engineer, you'll design and support digital service platforms, ensuring quality, scalability, and security while collaborating with teams to improve services.