Top Software Engineer Jobs in Belfast

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.

Build and maintain high-throughput, reliable database integrations to replicate data into ClickHouse. Debug production issues, improve observability and reliability, participate on-call, collaborate with customers and cross-functional teams, and influence product roadmap.

Lead design and delivery of core platform services (orders, baskets, checkout, promotions). Drive architecture, reliability, performance tuning, incident response, CI/CD and infrastructure improvements. Mentor engineers, coordinate cross-team initiatives, and contribute hands-on code to scalable, distributed microservices.

Build and maintain the control planes, automation, and observability for a global fleet of machines. Develop production-quality Go services for provisioning, health checks, upgrades, and incident remediation. Architect high-throughput, low-latency networking, improve utilization and power-to-performance, and collaborate with product and platform teams on storage-aware scheduling and developer-facing features.

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

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.

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.

Design, build and deliver Endpoint Privilege Management features across the stack. Use AI-assisted tools, collaborate with distributed cross-functional teams, diagnose and resolve complex production issues.

Build and operate backend systems enabling enterprise deployments of Coder. Design and implement scalable backend architecture, improve upgrade and migration reliability, investigate and resolve production scalability issues, own operator-facing backend features, document tradeoffs, participate in design reviews and on-call rotations.

Design, build, and operate Order Management platform features across checkout, fulfilment, returns, amendments and cancellations. Own end-to-end delivery including design, development, CI/CD, monitoring, production support, and platform architecture improvements to ensure scalable, resilient integrations and observable systems supporting retail fulfilment.

Design, build, and evolve order management capabilities across checkout, fulfilment, returns, amendments, and cancellations. Own features end-to-end from design through production support, improve platform architecture, integrations, reliability, and observability. Champion engineering excellence, CI/CD, monitoring, and operational excellence while mentoring engineers and collaborating with product and fulfilment stakeholders to deliver scalable, resilient systems.

Design, build, and operate scalable Order Management capabilities for checkout, fulfilment, returns, amendments, and cancellations. Own end-to-end features, shape platform architecture, improve integrations and automation, and drive observability, resilience, and operational excellence in a high-volume retail environment.

Design, build, and own end-to-end order management capabilities for checkout, fulfilment, returns, amendments, and cancellations. Drive platform architecture, integrations, CI/CD, observability, resilience, and operational excellence. Mentor engineers, collaborate with product and fulfilment stakeholders, and continuously improve engineering standards and tooling.

Design, build, and maintain backend API and database services for a cloud PBX platform. Drive architecture, performance optimization, debugging, CI/CD and test automation, and collaborate with QA. Mentor peers and raise engineering standards while safely evolving high-load, networked systems.

Provide technical leadership across multiple teams by shaping technical strategy, designing scalable distributed backend architectures, guiding architectural decisions, mentoring senior engineers, and improving reliability, observability, testing, and operational excellence. Partner with Product and Operations and contribute hands-on to critical systems powering millions of payment transactions.

Join an early engineering pod to own end-to-end delivery of EDUKATE.ai features. Work full-stack, collaborate with stakeholders, use AI-assisted development, uphold TDD and code-review standards, coach teammates, and help shape engineering practices and product outcomes.

Lead technical direction for a multi-ecosystem libraries platform: design ecosystem-agnostic indexing, build orchestration, and remediation automation from CVE detection to verified release. Drive AI/agentic patching strategy, mentor senior engineers, define SLOs, own reliability and incidents, and onboard .NET, Go, and Rust ecosystems while partnering across org teams.

Design, build, test, deploy and operate backend services for the Contact Centre. Integrate CCaaS platforms (Zendesk, Twilio, Azure/GCP), design APIs and event-driven solutions, and deliver customer self-service/FAQ capabilities while collaborating with product, data, security and customer stakeholders.

Lead backend-focused engineering for Contact Centre platforms, designing and operating secure, scalable services and integrations (Zendesk, Twilio, Azure/Google). Provide technical direction, write production-quality Java code, define APIs and event-driven workflows, and collaborate with Product, Data, Security and Customer Service to deliver reliable customer and colleague experiences.

Lead backend engineering for Contact Centre technology, designing, building and operating secure, resilient services and integrations (Zendesk, Twilio, Azure, Google). Provide technical direction across teams, implement APIs, event-driven workflows, and responsible AI automation while staying hands-on with production-quality Java code.

Backend-focused senior engineer to design, build and operate Contact Centre services. Build APIs and event-driven integrations with CCaaS platforms (Zendesk, Twilio), develop self-service/FAQ solutions, and ensure CI/CD, testing and live operation.

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.

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.