Top Software Engineer Jobs in Belfast

The Software Engineer will design, develop, and maintain software components for Windows Endpoint protection while collaborating within an Agile team.

As a Senior Software Engineer, you'll develop high-quality software solutions, mentor junior members, apply best practices in design and build, and contribute to technical decisions in a collaborative environment.

Design and develop server-side payment processing gateway products, lead technical work and mentor teams, improve development processes, collaborate across lifecycle from requirements to production, and assist deployments while ensuring high-quality, testable solutions.

Design and implement backend services for a high-throughput payments platform. Contribute to architecture and roadmap features, ensure code quality and test automation, support CI/CD and deployments, investigate production issues, mentor junior engineers, and collaborate in Agile teams to deliver scalable, reliable payment services.

Design, build and maintain automated test frameworks for multi-cloud (AWS/GCP) enterprise products. Develop and run API, backend and frontend automation, create mock servers, integrate tests into CI/CD, troubleshoot automation jobs, estimate test effort, and own QA sign-off and release coordination.

Responsible for building and maintaining Android applications with AI features. Focus on performance, UX design, and collaboration with backend and ML engineers.

As an iOS Developer, you will build and maintain AI-powered iOS applications focusing on performance, reliability, and user trust. Collaborate with engineers to integrate AI features, design UX patterns, and optimize app performance.

The Software Engineer will develop and maintain cross-platform desktop applications, focusing on performance, reliability, and integration of AI features. Responsibilities include optimizing applications, managing local data, and ensuring stability on macOS and Windows.

As a Frontend Software Engineer at Twilio, you will design, develop, and deploy new features for the Twilio Console platform, manage code through GitHub, and collaborate within a SCRUM team to improve the platform's capabilities while maintaining high engineering standards.

As a Senior Software Engineer, you'll design, build, and scale the core systems and APIs of The Flex platform, focusing on automation, reliability, and performance.

The role involves optimizing hardware support within a software stack for AI model deployment, collaborating with teams and hardware vendors to enhance performance and portability across platforms.

As a Frontend Engineer, you'll craft user interfaces, write engineering requirement documents, build test suites, and integrate analytics for product success.

As a Backend Engineer, you will design scalable APIs, create Engineering Requirement Documents, and build test suites for product analytics and performance.

We are looking for a Senior Fullstack Software Engineer to join our team, working on building and optimizing systems for electric car leasing.

Lead design and implementation of C++ software for secure embedded payment terminals, handling EMV/contactless/mobile transactions, cryptography and POS integrations. Drive full SDLC delivery, mentor engineers, improve CI/CD and tooling, troubleshoot embedded stacks, and collaborate with product and test teams to deliver production-grade solutions.

As a Backend Engineer, you will build and maintain backend services, write maintainable code, review peers' work, and learn from experienced engineers while leveraging AI tools.

Analyze and optimize ClickHouse database performance, develop performance tests, support engineering teams, collaborate with core teams, and engage with the open-source community.

As a Software Engineer, Platform, you'll design and maintain scalable infrastructure, develop backend services, manage cloud resources, and enhance development velocity, all within a remote and flexible environment.

The Software Test Engineer at Citi will focus on automation testing, creating test plans and cases, and ensuring quality through rigorous testing practices across applications.

Lead the design and development of complex Rails features, mentor junior engineers, define technical direction, and ensure high-quality code while collaborating with stakeholders.

The Senior Software Engineer will lead the design and management of cloud infrastructure, automate systems, ensure security, and enhance developer experience while mentoring the team.

The Senior Software Engineer will build robust technical solutions, focusing on RESTful APIs, TDD principles, and contribute to a strong engineering culture in a fast-paced environment.

Develop and test control-system software for advanced vehicles across the product lifecycle. Design, verify and validate control architectures, collaborate with teams and suppliers, and support structured engineering and quality-driven processes to deliver safe, reliable vehicle control systems.

Responsible for building scalable distributed systems, mentoring teammates, innovating on technical solutions, and improving team processes. Requires expertise in backend languages, especially Golang and Typescript.

Design and develop scalable applications and services, translating business requirements into technical solutions while ensuring code quality and performance. Collaborate within an Agile team, participate in code reviews, and mentor junior developers.