Software Engineer Jobs in Northern Ireland, United Kingdom

Network Software and Services for AI (nssAI) team at SpaceXAI builds cutting‑edge software, services, and frameworks to empower Network Development Engineers, focusing on metric collection, configuration, zero‑touch provisioning, monitoring, and auto‑remediation. The role designs and implements scalable, reliable tools for large GPU supercomputing network fabrics, enhances IaC pipelines, and ensures secure service delivery.

Quality Engineering team building the quality infrastructure that enables developers to deliver reliable software at scale. Designs and enhances automated testing frameworks, CI/CD pipelines, and AI‑assisted quality solutions across a modern cloud‑native platform.

Platform Engineering at Klaviyo builds infrastructure primitives, platforms, tooling, and guidance for engineering teams. The Software Engineer II designs and develops core platform services, improving availability, scalability, latency, and cost efficiency using Python, Go, AWS, and Kubernetes.

Software Localization & Release Engineering team at Apple builds and maintains automation testing frameworks to ensure high-quality software for international users. The Software Automation Engineer creates and runs automated test suites, leverages GenAI and large language models to enhance testing capabilities, and designs comprehensive test strategies across Apple platforms.

Privacy Engineering team at OpenAI builds secure systems to meet legal obligations and protect user data. The role designs, builds, and operates backend tools and data pipelines for lawful data access request workflows, partnering with Legal and Operations to ensure auditability and privacy.

Employee Engagement & Engineering team within Apple IS&T builds high‑scale, user‑centred tools for Apple employees. As a Swift Software Engineer you will design and deliver native macOS, iOS, and iPadOS applications in Swift/SwiftUI, integrating AI/ML features and platform interoperability.

Privacy Engineering team builds secure, reliable systems that help OpenAI meet legal obligations while protecting user data. The Software Engineer will design, build, and operate backend systems and data pipelines for lawful data access request workflows, partnering with Legal and Operations.

Triage Intelligence and Debug Engineering team at Apple builds automation and intelligent tooling to improve OS reliability across iPhone, Mac, and Apple Silicon. The Software Engineer will investigate crashes, develop automation pipelines, and apply ML/AI techniques to enhance triage logic.

Elasticsearch - Storage Engine team at Elastic builds core storage and query technologies for observability workloads. The Senior Software Engineer designs, implements, and optimizes Elasticsearch's storage engine, leads performance initiatives, and mentors engineers across a fully remote, globally distributed team.

Platform Engineering at Klaviyo builds infrastructure primitives, platforms, tooling, and guidance for engineering teams. The Senior Software Engineer designs and develops core platform services to improve availability, scalability, latency, and cost efficiency, mentoring engineers and driving cost‑optimization.

Elasticsearch - Storage Engine team builds core storage and query technologies for observability workloads, focusing on storage efficiency, ES|QL processing, and object‑storage data layouts. The Senior Software Engineer designs, implements, and optimizes Elasticsearch's storage engine, leads cross‑team initiatives, mentors engineers, and contributes modern Java code.

Anthropic seeks a Senior Software Engineer to enhance AI reliability by designing SLOs, monitoring, high‑availability infrastructure, automated failover, incident response, and cost optimization for large‑scale language model serving.

Reinvention Deployment Engineering pods at Accenture build the largest Forward Deployed Engineer capability, embedding AI platform expertise directly inside client enterprises. The role leads end‑to‑end AI platform deployments, owns programme‑level outcomes, architects full‑stack solutions, and shapes AI adoption strategy for C‑suite stakeholders.

Public Cloud Engineering – Infrastructure Platforms at J.P. Morgan builds market‑leading, secure, and scalable cloud services for the firm. As a Lead Software Engineer you will design and deliver high‑quality production code, drive adoption of AI‑assisted development tools, and mentor the team on responsible AI use.

Network Engineering team at Google builds and maintains the WAN core infrastructure that connects Google services worldwide. The role designs, develops, tests, and deploys high‑performance networking software, leads design reviews, and troubleshoots system issues to ensure reliability and scalability.

As a Software Engineer III on JPMorgan Chase's Corporate Sector agile data engineering team in Glasgow, Lanarkshire, United Kingdom, you will help build and scale a trusted Global Know Your Customer (KYC) and Risk Assessment Data Platform. Day-to-day, you will develop secure, high-quality production code for data-intensive applications, define architecture and engineering standards, mentor engineers, and collaborate across teams to deliver scalable, enterprise-grade solutions.

Google's Site Reliability Engineering (SRE) team in Dublin, Ireland is hiring a Software Engineering Manager, Site Reliability Engineering, AI Security to lead a team of SREs focused on secure-by-default principles for Cloud AI products and infrastructure. Day-to-day, you will define and execute technical strategy and roadmaps to address top security risks, design and deliver software to improve availability, scalability, latency, and efficiency, mentor the team, and participate in on-call rotat

REDAPL Graph Engine team at Datadog builds the core platform that tracks customers’ infrastructure resources and relationships, powering Cloud Security Posture Management, Cloud Cost Management, and Service Catalog. As a Senior Engineer you design and implement a high‑performance query engine for relationship traversals, lead architectural decisions, and collaborate with product teams to scale the platform across multiple regions.

Mastercard seeks a Senior Software Engineer specializing in Performance Engineering to design and operate scalable, resilient payment platforms. The role involves defining non-functional requirements, conducting performance assessments, and mentoring junior engineers within the Dublin office.