Top Software Engineer Jobs in Belfast

As a Software Engineer, you'll develop trading APIs and systems, enhance user experiences, and lead initiatives for blockchain support and new products.

As a Staff Software Engineer on the Developer Platform team, you will enhance CI/CD pipelines, improve developer experience, and productionize AI tooling while mentoring teammates and collaborating with engineering leaders.

The Senior Software Engineer will focus on backend development, designing and maintaining APIs and services, collaborating on features, and enhancing integrations at Motion.

The Senior Software Engineer will design and architect scalable software solutions, mentor engineers, drive technical decisions, and improve engineering practices within the team.

The Staff Software Engineer will develop AI tools integrated with game engines and services, focusing on C++ and automation for game development.

As a Software Development Engineer II, you will develop and maintain web services for navigation solutions, ensuring reliability and performance while collaborating with the team.

As a Senior SDET, you will enhance testing practices, improve CI pipelines, mentor engineers, and ensure platform reliability through comprehensive testing strategies.

Senior full‑stack engineer responsible for designing and delivering scalable, cloud‑native applications using Java or Python. Solve complex business problems, set coding standards, mentor mid‑level developers, integrate Gen‑AI capabilities (LLMs, prompt engineering, vector search) and third‑party Gen‑AI APIs, and collaborate with management to deploy new products while ensuring compliance and risk controls.

Lead design and delivery of order management and promising services: build resilient APIs and integrations, own features end-to-end, improve observability and operational excellence, mentor engineers, and shape technical direction to enable accurate delivery promises and scalable fulfilment.

Design, build, and operate backend platform capabilities for content and media: federated GraphQL, event-driven pipelines, APIs, automation, and developer/editor tooling. Lead architecture, deliver production-quality code, and enable teams via scalable, reliable services.

The Staff Software Engineer will design and build backend platforms for content and media, develop APIs, lead architecture design, and act as a technical authority.

The Staff Software Engineer will lead the design and delivery of robust order management solutions, ensuring reliability and scalability, while mentoring junior engineers and collaborating across teams.

Develop and maintain the macOS endpoint client for an endpoint security product. Design features, shape architecture, review code (including agentic AI-generated code), improve build/deploy/test automation, resolve customer issues, and track macOS/security technologies while mentoring peers and owning product areas.

Lead Bloomreach Professional Services integrations: design and implement solutions using Java and modern frontend frameworks, validate scope, assess technical risks, make architectural decisions, improve DXP add-ons and documentation, coach peers, and occasionally travel to EMEA clients.

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

Build and operate a managed PostgreSQL service for AI workloads: develop control plane and lifecycle automation in Go, tune PostgreSQL internals and ecosystem tooling, create migration tooling, integrate vector search, run SRE practices (SLOs, observability, incident response), and work directly with customers on architecture and escalations.

Lead backend and edge/IoT engineering, implementing scalable solutions and mentoring team members while collaborating with Data Science teams.

Design, implement, and maintain scalable Java-based software solutions. Collaborate across the SDLC with stakeholders and development teams, integrate DevOps and CI/CD practices, support operational tasks, ensure security and performance, drive feature development, conduct code reviews, and stay current with emerging technologies.

Lead Systems Engineer responsible for designing, implementing, and maintaining PLC/SCADA automation systems, industrial networks, and OT cybersecurity. Provides technical leadership, mentors teams, oversees system architecture, commissioning, risk assessments, and vendor/client coordination to deliver secure, standards-compliant projects on time and within budget.

Lead and grow an SDET team building reliable, scalable cloud storage solutions. Provide technical leadership, design and review architectures, plan sprints, implement deterministic functional and non-functional test suites in CI/CD/CT pipelines, collaborate on product specs, hire and mentor engineers, and continuously improve processes and systems.

Design and build extensible Dynamics 365 solutions: develop plug-ins, custom workflow assemblies and actions; implement integrations and concurrency handling; integrate Power Platform and Power BI; profile performance using Application Insights; and support CI/CD with Azure DevOps.

Own and deliver frontend trading features across web, mobile, and browser extension platforms. Lead new blockchain integrations and product initiatives, collaborate with product, design and trading teams, interface with users and developers, and help grow the engineering team and culture.

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.

Work on YDB distributed storage and database systems to maximize performance on modern and legacy hardware (NVMe, HDD, DPUs). Reengineer components for low-latency, high-throughput workloads, profile and debug production systems, and design resilient distributed storage primitives. Collaborate on incident resolution and production deployments to support Nebius cloud services.

Build and maintain a distributed, fault-tolerant, high-performance block and filesystem storage system. Work on virtualization (virtio-blk, virtio-fs, QEMU, vhost-user), high-throughput VM-to-storage networking (TCP, RoCEv2/RDMA), and core storage features like replication, consensus, self-healing, and data migration. Debug and optimize performance-critical I/O paths while writing reliable, maintainable code in a collaborative team environment.