Top Tech Jobs & Startup Jobs in Belfast

Lead the design, development, modernization, and production delivery of enterprise-scale applications using Java and Python. The role includes building backend services, integrating frontend technologies and GenAI capabilities, applying cloud-native architecture, partnering with global business and technology teams, mentoring developers, and ensuring secure, stable, controlled applications in an Agile environment.

Leads the adoption and delivery of Generative AI capabilities across enterprise applications. Defines technical direction, architectures, and reusable patterns; builds LLM, RAG, and agentic solutions; owns production delivery and continuous improvement; mentors engineers; and ensures security, resilience, governance, evaluation, and responsible AI practices. Collaborates with global technology and business teams to support regulatory, risk, and transformation priorities.

Leads product management for a global corporate actions reference-data platform. Responsibilities include defining requirements, epics, user stories, and backlog priorities; data modeling, vendor mapping, profiling, transformation, and SQL validation; API and web interface strategy; vendor engagement; golden-copy governance; automation and AI-ready data initiatives; stakeholder management; roadmap delivery; training; and release governance.

Provide technical and business support for mission-critical FX trading applications across global markets. Responsibilities include monitoring systems, supporting trade lifecycle processes, troubleshooting issues, coordinating with technology teams and vendors, maintaining documentation, supporting releases, performing post-release checks, and participating in stability and efficiency projects. The role requires SQL, UNIX, Python, application support, cloud and DevOps knowledge, plus rotational weekend coverage and disaster recovery participation.

Develop and enhance the ASPEN asset servicing application using Java, Angular, and Oracle. Analyze, test, debug, and secure applications, work in an agile global team, identify system improvements, and implement solutions under deadlines.

Supports Citi’s commodities legal team by reviewing, drafting, and negotiating master agreements and related documentation for financial and physical commodities, emissions trading, and amendments. Engages institutional clients, counsel, business partners, Risk, and internal legal teams; advises on contractual risks and regulatory requirements; maintains negotiation records; and contributes to regulatory implementation, process improvements, and product initiatives.

Design, develop, and deploy real-time market data and analytics systems for equities trading. Lead KDB+/q development, deliver low-latency solutions, optimize performance, establish coding and testing standards, and collaborate with traders, quants, and global technology teams. Responsibilities include application design, implementation, debugging, production support, risk management, user consultation, and technical delivery with limited supervision.

Manage technical onboarding of external and internal clients onto Citi’s FX trading platforms. Responsibilities include gathering requirements, arranging network connectivity, delivering server and client components, maintaining FIX APIs, providing second-line support, improving platform stability, decommissioning unused connections, and coordinating with trading, sales, development, network, support, vendor, and client teams through production go-live.

Leads governance, oversight, tracking, and reporting for a portfolio of automation programs, projects, and strategic initiatives. Establishes KPIs, KRIs, risk frameworks, reporting cadences, and executive updates while resolving delivery roadblocks and coordinating cross-functional stakeholders. The role requires strong program management, data analysis, financial-services governance experience, knowledge of Citi systems, and the ability to influence senior leaders in a complex matrixed organization.

Provide transaction management support to Citi's Legal team by reviewing, drafting, and negotiating contracts; liaising with clients, internal counsel, and business partners; ensuring regulatory compliance; managing documentation and tight timelines; escalating complex issues to senior attorneys; and identifying process and product improvements.