Top Software Engineer Jobs in Belfast

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.

The Software Engineer will design, develop, and support the MEMX Trading system software, focusing on production support during US evening hours.

The Senior Software Engineer will develop high-quality software solutions, mentor junior engineers, and resolve production issues while collaborating with cross-functional teams.

Canonical seeks open-source enthusiasts to optimize Ubuntu for new silicon technologies, collaborating with teams and customers to enhance software quality and performance across various platforms.

The Lead Software Engineer will provide technical design, maintain the technical roadmap, document architectures, code, conduct reviews, mentor engineers, and support recruitment efforts.

As a Senior Software Engineer, you will lead your team in shipping features, making technical decisions, and mentoring others to scale products effectively.

The Principal Software Engineer I will focus on improving distributed systems for Elasticsearch, managing cluster coordination, and addressing performance issues.

The role focuses on enhancing Elasticsearch's distributed systems for performance, resilience, and managing data indexing across multiple nodes while diagnosing challenges and collaborating across teams.

As a Go Software Engineer for Identity Management, you will design, implement, and enhance identity management solutions, collaborate with a distributed team, and contribute to the development of authentication and authorization systems.

The Senior Software Engineer will build reliable APIs, deploy speech models, and contribute to software development, targeting voice interactions and multi-tenant infrastructure.

As a Staff Software Engineer, you'll enhance the Add-on Operations team by developing features, ensuring reliability, and mentoring junior engineers in an open-source environment.

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

Build backend features for restaurant partners, identify technical opportunities, own projects, collaborate with a team, and ensure service quality and performance.

The Lead Golang Software Engineer develops server solutions, leads technical designs and code reviews, mentors colleagues, and ensures the quality of engineering practices in the Commercial Systems unit.

The Python Software Engineer will develop and maintain test automation tools for hardware certification and improve Linux testing methods.

You will build and maintain container images, automate CI/CD processes, engage with the community, and mentor junior team members in a collaborative environment.

Lead Python Software Engineer responsible for developing solutions, collaborating on designs, mentoring team members, and enhancing engineering practices.

Develop and enhance dqlite, a distributed SQLite database, including debugging, implementing features, and engaging with the open source community.

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.

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 Staff Software Engineer, you will lead software development for payment solutions, enhance code quality, and ensure compliance standards.

As a Senior Backend Engineer at HubSpot, you'll design and build impactful features, collaborate across teams, and enhance user satisfaction while empowering SMBs with our technology.

Lead the architecture and implementation of the Libraries Platform, ensuring secure, reliable automation and service delivery for open-source libraries. Design shared services, build pipelines, and improve developer tools while promoting reliability and observability.

Join Reedsy to develop and improve a collaborative word processor, adding features and ensuring performance and security for users.

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