Top Software Engineer Jobs in Belfast

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.

Lead architecture and technical strategy across core product suites, mentor senior engineers, drive AI-first SDLC adoption, own target architectures and roadmaps, support feature delivery and tech debt reduction, and ensure reliability, security, and compliance.

Own and drive architecture for a major backend domain in Chainguard's clearing house. Build production-ready Go services on GCP with Terraform, design data pipelines to ingest and deduplicate unstructured vulnerability reports, establish engineering best practices, and collaborate on interfaces, observability, and roadmap planning.

Own and build core backend components in Go on GCP, including customer onboarding, entitlement logic, and data ingestion pipelines. Drive ambiguous features from design to production with testing and observability, participate in on-call rotations, lead multi-engineer efforts, review code, and contribute Terraform and GCP operational tooling.

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.

Build and deliver internal data tools and platforms, support ingestion systems and promote operational excellence in a collaborative environment.

The Embedded Software Quality Engineer ensures the quality of software in the embedded systems market. Responsibilities may include testing, debugging, and validating software solutions to maintain performance standards.

Responsible for the technical deployment of the Guardian system, ensuring it meets requirements, integrating with client environments, and managing customer communications.

Build and maintain pipelines and web scrapers to create a large case-law dataset, implement metadata extraction (citations, overruling/appeals), ensure scraper reliability, optimize core utilities, expose data via APIs/websockets, and benchmark/evaluate tasks.

As a Senior Blockchain Engineer, you will design and optimize smart contracts and blockchain infrastructure, collaborate with teams to ensure secure solutions, and lead development efforts in the DeFi ecosystem. You will analyze technologies, mentor staff, and enhance performance while maintaining security best practices.

Optimize Ubuntu integration across latest IoT and server-class hardware, lead customer engagements, and work with open source communities in a remote, collaborative environment.

As a Software Support Engineer, you will troubleshoot and resolve complex issues related to Ubuntu and open source technologies, collaborate with teams, and contribute to community development.

The Senior Software Engineer at ClickHouse will design and build backend services for database management, contribute to automation, collaborate across teams, and improve operational processes.

The Sr. Software Engineer will develop public APIs, build integrations with HRIS, maintain platform services, and enhance code quality using Generative AI tools.

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.

Lead and own platform architecture across Infrahub ecosystem, implement high-impact architectural improvements, reduce technical debt, champion AI-first engineering, provide hands-on technical leadership, mentor engineers, and collaborate with product and leadership to ensure scalable, extensible systems.

Lead design, build, release, and maintain large-scale software solutions. Provide technical leadership, architecture, code review, mentorship, and operational stability. Drive CI/CD, DevOps practices, observability, and technical roadmap while collaborating with product and delivery teams.

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.

Design, implement, and maintain scalable Java-based software solutions. Collaborate across the SDLC, drive feature development, conduct code reviews, support CI/CD and DevOps practices, and ensure system performance, security, and reliability.

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.