Top Software Engineer Jobs in Belfast

The Junior Ubuntu Software Engineer will design, build, and ship software, focusing on quality and resilience, while engaging with the open source community.

The Senior Software Engineer will design and build scalable backend services, work with cloud platforms, mentor engineers, and contribute to system architecture and CI/CD processes.

As a Principal Engineer at M&S, you'll drive technical strategy, influence architecture, and mentor engineers while delivering on personalization, search, and machine learning features in collaboration with cross-functional teams.

The Senior Software Engineer will enhance Speechify's product experience by building foundational services, collaborating with product teams, optimizing functionality, and developing backend services using Kotlin.

As a Senior Software Engineer, you will build scalable distributed systems, improve developer experience, mentor peers, and lead incident responses.

Lead architecture for large-scale, high-availability distributed systems using Domain Driven Design. Provide project-embedded consultation, prioritize platform capabilities, drive CI/CD and cloud practices, and communicate technical strategy to stakeholders to ensure scalable, secure, and observable systems.

The role involves developing, testing, and deploying Python microservices, solving complex technical problems, and contributing to architectural decisions. Engineers will work with a product team and ensure code quality through reviews and testing, while continuously learning and improving practices.

The Senior Software Engineer will collaborate in small teams to develop and maintain backend and frontend components, focusing on high-availability systems, writing tests, and continuous delivery on Google Cloud Platform.

The Senior Software Engineer leads project subsystems, mentors junior engineers, and designs scalable SaaS solutions while optimizing performance and ensuring code quality.

Build and operate cloud-based Financial Services features end-to-end: design, implement, test, and deploy reliable services; ensure observability, security, and performance; lead complex deliveries; mentor engineers; participate in on-call support; and improve CI/CD and tooling.

The Senior Software Cybersecurity Engineer analyzes software for security, performs threat modeling, leads security efforts, mentors teams, and integrates security throughout the development lifecycle.

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.

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.

Lead the Market Making Engineering team in developing real-time quoting systems, collaborate with stakeholders, and enhance software and processes.

Lead decomposition of a PHP monolith into Go microservices, design and operate scalable distributed systems (Kafka, Temporal, OpenSearch, Memgraph), integrate network telemetry and third-party APIs, maintain Terraform-managed cloud infrastructure, enforce SLAs/SLOs and CI/CD quality, mentor engineers, participate in on-call rotations, and drive platform architecture and reliability.

The Senior Software Engineer II will design and implement generative AI services, drive architectural standards, mentor engineers, and collaborate across teams to enhance data solutions.

Lead architecture and technical direction across the full stack, solve ambiguous cross-cutting problems, deploy LLM-powered features into production, improve reliability and scale, mentor engineers, and make strategic build/buy and platform decisions that shape long-term product delivery.

As a Staff Software Engineer, you will lead the development of Mural's Canvas platform, ensuring high performance and reliability in real-time collaboration and document editing.

As a Senior Software Engineer, you will develop and maintain Alpaca's platform services, including event streaming infrastructure and authentication systems, while ensuring software quality and reliability.

The Senior Software Engineer ensures the reliability and performance of the Mural editor, collaborates on technical projects, and designs APIs for real-time collaboration. Responsibilities include product engineering, mentoring, and improving team processes while focusing on performance and developer experience.

Design, develop, and enhance Cority's software and client solutions. Lead technical decisions, produce production-ready code, mentor junior developers, collaborate with Product Owners, ensure CI/CD and testing automation, and provide support and maintenance for assigned functional areas.

Senior Software Engineer will own end-to-end delivery in a Learner Experience pod, work full-stack to shape and ship AI-first edtech features, coach engineers, collaborate with stakeholders, and maintain high engineering standards (TDD, code review).

Design, build, and operate scalable, resilient payment services and APIs for high-volume ecommerce. Own end-to-end features, improve observability and reliability, champion engineering best practices, and support production systems.

The Lead Software Engineer designs and develops software solutions, leads teams, mentors junior members, and interacts with customers while integrating AI or ML technology.

Design, build, and operate scalable backend microservices and APIs for pricing and promotions. Implement Kafka-based event-driven architectures, GraphQL/REST APIs, and resilient low-latency solutions using MongoDB, Redis, and PostgreSQL. Own features from design through deployment and production support.