Top Software Engineer Jobs in Belfast

Seeking a Senior Software Engineer with expertise in Kotlin or Java to enhance developer platforms and internal tools at Citi's CTO organization, focusing on server-side engineering and modern databases.

As a Senior Software Engineer at KoBold, you'll develop innovative data systems for mineral exploration, collaborating closely with geologists and data scientists to improve exploration success rates. You'll own projects end-to-end, engage with users, and create scalable, production-quality solutions for complex geological challenges.

Design and develop software solutions from scratch, collaborating on government projects, and participating in the software development lifecycle.

The Junior Software Engineer Internship involves supporting vessel data processing software, performance analysis, software deployment, and documentation, within a graduate framework at Artemis Technologies.

The Senior Software Engineer will manage full software development life cycle, focusing on data engineering, project leadership, code quality, and customer-centric development.

As a Senior Software Engineer on the Localization Team, you will develop localization tools and libraries, improve internationalization in Firefox, and collaborate with the community and peers to support Mozilla's mission.

Develop microservices and cloud services for Magnify's platform, collaborate with data science, and lead complex software projects in a startup environment.

Design, develop, and maintain mobile applications using React Native, focusing on user onboarding and experience optimization while mentoring other engineers and influencing technical strategies.

As a Senior Software Engineer at Kraken, you will collaborate with teams to develop onchain services, optimize applications, and mentor engineers, focusing on blockchain and DeFi technologies.

Design, develop, and maintain payment processing systems. Optimize user experiences, ensure security, mentor engineers, and influence technical decisions.

As a Senior Software Engineer at Kraken, you will design and maintain backend systems, SDKs, and APIs, enabling efficient growth engineering. You will improve internal tools, enhance developer workflows, and ensure system reliability across multiple teams.

As a Staff Software Engineer on the Growth team, you will lead technical projects impacting user acquisition, mentor engineers, and ensure system reliability and scalability.

As a Senior Software Development Engineer, you will develop complex mapping software, collaborate on tasks, design systems, and promote operational excellence.

As a Senior Software Engineer, you'll tackle high-impact problems by creating full-stack applications, collaborate across teams, and drive user engagement through strategic engineering solutions fitted for growth.

Design and implement robust Rust services for Kraken's core infrastructure, focusing on security, maintainability, and operational resilience in production environments, while collaborating with product teams and debugging issues across the stack.

The Staff Software Engineer will build backend capabilities for Kraken's platform, focusing on distributed systems and integrating AI functionalities while ensuring high standards of reliability.

Design, build, and optimize high-performance AI infrastructure systems to support intelligent agents, ensuring reliability and scalability for millions of users.

Design and implement robust Rust services for trading and payments, focusing on performance and user impact while collaborating on distributed systems architecture.

The role involves designing and implementing security solutions for AI applications, collaborating across teams, and optimizing security capabilities against adversarial attacks.

The Sr. Software Engineer (FE) will lead the development of scalable frontend applications using React. Responsibilities include systems design, testing strategy, performance optimization, AI integration, and mentoring.

The Sr. Software Engineer will design and maintain public APIs and integrations with HRIS systems, ensuring high availability and performance while using Generative AI tools to improve code quality.

As a Senior Software Engineer, you will design and implement distributed storage components for streaming tables, improve performance and reliability, and contribute to the Apache Fluss project.

As a Staff Software Engineer, you will develop backend services for the agentic platform, integrating AI capabilities and ensuring system reliability, security, and developer usability.

The Senior Staff Software Engineer will lead the architecture of the agentic platform, define shared service designs, partner with teams for reusable capabilities, provide technical leadership, and implement cost-management and evaluation pipelines.

The Senior Software Engineer will build and maintain backend services while ensuring operational excellence, monitoring, and incident response, applying strong engineering principles and innovation.