Top Tech Jobs & Startup Jobs in Belfast

Develop complex Java and Spring Boot applications, RESTful microservices, SQL solutions, and automated tests. Apply software engineering principles, CI/CD, source control, and code quality practices while solving complex technical problems. Lead, mentor, and manage application developers. Preferred experience includes big data, cloud-native development, container orchestration, and Jira.

Develop and maintain React-based user interfaces and Java backend services. Write clean, tested code, debug issues, participate in code reviews, collaborate with designers and stakeholders, and assist with database queries while following best practices.

Lead design, engineering and delivery of cloud-native, Databricks/AWS-based data services. Drive migration to Databricks, build scalable Spark/Scala pipelines, optimize performance, mentor teams, manage technical delivery, and enable AI/GenAI integrations while ensuring governance, security and regulatory compliance.

Lead design, development, and optimization of high-performance ETL pipelines using Ab Initio for Oracle ledger processing. Collaborate with business and cross-functional teams, drive SDLC within Agile, perform SQL-based data investigations, build automation utilities, monitor/resolve production issues, and manage testing and deployments.

Senior full‑stack engineer responsible for designing and delivering scalable, cloud‑native applications using Java or Python. Solve complex business problems, set coding standards, mentor mid‑level developers, integrate Gen‑AI capabilities (LLMs, prompt engineering, vector search) and third‑party Gen‑AI APIs, and collaborate with management to deploy new products while ensuring compliance and risk controls.

Lead design and implement data strategy and architectures for Funds (IBOR/ABOR, fund accounting, ETFs). Drive data modeling, governance, lineage, integration, and enable reporting while collaborating with engineering and stakeholders.

Lead development and enhancement of a trade cost analytics platform; design trade and cost analytics, reconciliation processes, and metrics; manage requirements and projects across the software delivery lifecycle; engage global stakeholders across Front, Middle, Operations, and Technology to deliver reporting, onboarding, and process improvements for transaction expense management.

The Engineering Lead will provide technical leadership, mentor engineers, and drive cultural changes in software engineering practices. Responsibilities include building AI-powered applications, enhancing developer tooling, and ensuring adherence to best practices.

Develop and enhance the Global Market Data low-latency platform for Equities: design microservices, implement new functionality, support production systems, coordinate exchange changes, and troubleshoot with traders and support teams.

Backend Java Developers will design, develop and maintain application systems across the full lifecycle. Roles span Assistant Vice President to Senior Vice President levels and may include technical leadership. Candidates must have strong Core Java experience, knowledge of end-to-end application lifecycles, and will undergo a technical assessment for appropriate role placement within Citi Belfast.