Top Tech Jobs & Startup Jobs in Belfast

Design, develop, and optimize Citi’s ultra-low-latency risk engine for cash equities electronic trading. Build real-time pre-trade risk checks, position limits, and exposure controls using high-performance concurrent architectures. Integrate risk services with connectivity, market access, and market data systems while tuning JVM, native code, operating systems, networking, and hardware for minimal latency and jitter. Mentor engineers, guide architecture, coordinate global delivery, and collaborate with trading, quantitative, infrastructure, QA, and support teams.

Provides HR partnership and day-to-day support to senior Risk Management leaders across global regions. Responsibilities include employee lifecycle delivery, employee relations, talent and performance management, compensation processes, collaboration with HR advisors and centers of excellence, risk assessment, cross-company project leadership, and training team members.

Participate in Citi’s 10-week Chief Operating Office Summer Analyst Program, supporting enterprise-wide transformation, risk and controls initiatives, and central operations. Work with senior COO professionals and business teams on analytical and problem-solving projects. Receive formal training, mentorship, and opportunities for professional development while building skills in data storytelling, project management, teamwork, and operational improvement.

Develop and deploy enterprise-scale public cloud solutions, including container fleet management services. Build automation, contribute to full-stack software development, improve cloud service consumption, and support service availability and reliability. Partner with cross-functional technology teams to execute Citi’s cloud strategy. The role requires hands-on expertise in AWS, GCP, software engineering, AI/ML technologies, CI/CD, distributed messaging, databases, and modern development practices.

Build, evaluate, prototype, and deploy production AI applications across Citi’s business lines. Integrate LLMs and agentic systems with enterprise APIs, data pipelines, and lightweight interfaces; assess emerging AI platforms; move successful proofs of concept toward production; and communicate technical impact to business and technology stakeholders. The role requires full-stack software engineering, applied LLM experience, rapid technology adoption, and comfort working in a regulated financial institution.

Provides frontline technical and business support for critical Prime Finance applications covering prime brokerage and securities lending. Responsibilities include incident resolution, ticket management, monitoring, system onboarding, stability projects, change management, automation, and proactive resilience improvements. The role collaborates with global support teams, developers, business analysts, and financial business users while serving as a subject matter expert for securities lending applications.

Lead business analysis for an intraday liquidity solution within Citi’s Markets Treasury Technology team. Analyze data using Python and Excel, assess existing systems, translate business requirements into technology designs, define testing scenarios and acceptance criteria, and support software delivery through production rollout. The role partners with business, operations, technology teams, and senior stakeholders, requiring expertise in cash management, intraday liquidity, SWIFT payment and statement messages, Markets products, financial cash flows, and modern software engineering practices.

Develops and improves counterparty credit risk systems and reporting focused on Loans Stress Loss. Analyzes credit exposure data, validates risk calculations, investigates data anomalies, and partners with Risk, Technology, underwriters, and business teams to resolve issues. The role gathers requirements, documents solutions, coordinates user acceptance testing, recommends process improvements, and ensures decisions comply with risk and regulatory standards.

Supports stability and resiliency governance for critical banking applications by preparing metrics, monitoring KPIs, analyzing stability data, improving data quality, documenting best practices, and assisting with attestations, improvement programs, strategy initiatives, and ad hoc projects. The role works under senior guidance and develops foundational expertise in production management, IT governance, and risk management.

Develop and deliver Java/Kotlin swap-processing components for Citi’s Strategic Swaps Platform. Responsibilities include test-driven development, automated testing, Agile delivery, CI/CD, technical analysis, system design, documentation, production support, and reliability improvements. The role also involves collaborating with management and technical leadership, resolving complex application issues, contributing to architecture and process enhancements, and coaching junior developers. Experience with cloud, messaging, databases, observability tools, and swaps or prime brokerage is advantageous.