Top Tech Jobs & Startup Jobs in Belfast

Designs, builds, and operates automated deployment pipelines and production workflows for a batch processing platform. Responsibilities include parameterizing scripts, managing deployments across environments, supporting client implementations, troubleshooting run-day failures, automating AWS infrastructure and disaster recovery, creating monitoring and notifications, and documenting operational procedures. Collaborates with development, TechOps, and cloud infrastructure teams to improve platform scalability and sustainability.

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.

Processes global sales orders, captures contract data, reviews quotes, fulfills software subscriptions, and resolves transactional issues. Partners with Sales, Legal, IT, Commissions, Accounting, and Accounts Receivable to remove bottlenecks and ensure accurate bookings. Supports customer inquiries, system and SKU testing, and cross-functional operational improvements that enhance scalability and proposal-to-cash efficiency.

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

Provide expert technical advice on age assurance and digital identity technologies within online safety regulation. Lead research and evaluations, assess technical feasibility and risks, translate complex concepts for policy and leadership audiences, prepare briefings and demonstrations, monitor emerging trends, and engage with academia, industry, public bodies, and external technical groups.

Provide actuarial consulting and tailored advice to trustee and corporate clients on defined benefit pension schemes. Lead client meetings, presentations, technical reviews, project delivery, fee management, and team supervision. Develop strategies across funding, investment, risk transfer, and covenant matters while communicating complex actuarial topics clearly.

Provide actuarial consulting and tailored advice to trustees and corporate clients, primarily for defined benefit pension schemes. Responsibilities include leading client meetings, reviewing actuarial calculations, advising on technical topics, managing project resources and budgets, supervising and mentoring colleagues, and supporting funding, investment, risk transfer, and covenant solutions.

Provides actuarial consulting and tailored advice to trustees and corporate clients, primarily for defined benefit pension schemes. Responsibilities include leading client meetings, delivering technical guidance, reviewing actuarial calculations, managing project strategy and resourcing, supervising junior staff, mentoring, and monitoring fees. The role requires a fully qualified actuary with strong pension, analytical, communication, project management, and UK pension scheme knowledge.

Develop and maintain Java-based market access gateway systems connecting Citi’s trading infrastructure with EMEA exchanges. Responsibilities include application development, system enhancements, support and maintenance, vulnerability analysis, testing, debugging, troubleshooting, and stakeholder consultation. The role also provides technical guidance to junior analysts and requires independent problem-solving in a financial services environment. Desirable experience includes containerization, DevOps tools, Unix and shell scripting, and low-latency coding principles.

Develop enterprise-scale Python applications for Citi’s Wholesale Credit Risk Technology team. Build solutions using Python, FastAPI, Java, MCP, LLMs, and RAG architecture; collaborate with onshore, offshore, and matrix teams; manage CI/CD pipelines and Kubernetes deployments; investigate bugs, resolve complex issues, provide production support, and communicate progress to project leadership.

Analyze complex capital and related data for financial markets, delivering insights, visualizations, and recommendations to product desks and business partners. Identify trends, optimization opportunities, data-quality issues, and process improvements across multiple platforms. Collaborate with stakeholders and Technology to resolve complex requirements and systems issues, while communicating findings clearly and supporting capital-management initiatives.

Owns the roadmap, performance, and improvement of hardware and embedded software products for low-voltage distribution networks. Researches customer needs and market trends, develops business cases and priorities, analyzes product costs and margins, and translates customer problems into requirements. Collaborates with engineering, operations, quality, supply chain, sales, and marketing on product development, validation, certification, launches, and field trials.

Develop and maintain high-performance FX prime brokerage applications using Java and Kotlin. Design distributed, fault-tolerant systems and intersystem protocols, collaborate with business and quantitative stakeholders, coordinate requirements and delivery estimates, investigate production incidents, improve stability and monitoring, and contribute to platform architecture. The role also involves developing FX subject-matter expertise, supporting cloud-ready infrastructure, and potentially providing technical or people leadership.

Support corporate derivatives trade screening, pricing, profitability analysis, capital optimization, and risk-weighted asset management. Collaborate with Sales and Structuring teams on transaction analysis and documentation. Develop responsible AI use cases to improve trading, risk management, record-keeping, workflow efficiency, and front-office franchise activities while considering regulation, policy, and funding costs.

Processes global and international payrolls, supports new payroll implementations, maintains country-specific payroll knowledge and client documentation, and resolves complex payroll queries. The role also supports global partners, attends client meetings, assists junior team members, researches payroll solutions, and develops expertise in payroll systems while ensuring accuracy, compliance with departmental standards, and strong stakeholder communication.