Top Software Engineer Jobs in Belfast

Design, build, operate, and maintain scalable distributed systems supporting CrowdStrike’s Intelligence pipelines. Gather requirements from analysts, develop processing and data integration systems, make autonomous architecture decisions, maintain Go and Python codebases, deploy production services, document solutions, train users, and communicate technical details effectively. The role requires independent execution in a geographically distributed team and includes opportunities to work with cloud platforms, APIs, web interfaces, malware analysis, and AI technologies.

Design, build, and operate high-performance platform services for SailPoint’s Identity Security Cloud. Develop Golang microservices, Angular and TypeScript features, automated tests, and AWS-based distributed architectures. Collaborate with data scientists on AI-driven capabilities, optimize low-latency services and databases, improve CI/CD pipelines, participate in a 24x7 on-call rotation, and contribute to technical design, mentoring, and platform strategy.

As a Software Engineer on the Menu team, you'll develop and manage systems for accessing menu records, collaborate with Product, and own tasks while ensuring high-quality software delivery.

Lead the technical direction and architecture of the Foundations platform team, owning authentication, authorization, SSO, secrets management, tenancy, and core platform services. Design APIs, drive services through launch, make technical decisions, establish engineering standards, and mentor engineers without formal management authority. Partner with engineering and product leaders to align execution with priorities.

Design, develop, and deploy real-time market data and analytics systems for equities trading. Lead KDB+/q development, deliver low-latency solutions, optimize performance, establish coding and testing standards, and collaborate with traders, quants, and global technology teams. Responsibilities include application design, implementation, debugging, production support, risk management, user consultation, and technical delivery with limited supervision.

Develop and maintain native iOS features for Olo’s new restaurant app. Responsibilities include writing clean Swift code, code reviews, unit testing, debugging, deployment and production monitoring, roadmap collaboration, distributed systems reliability, and on-call support. The role also contributes to cross-platform mobile direction, delivery pipeline improvements, and adoption of AI coding tools.

Develop and evolve the Olo Android app, owning complex features from design through production. Responsibilities include mentoring engineers, leading code reviews, improving technical debt and performance, designing scalable systems, maintaining production services, optimizing CI/CD and testing automation, collaborating with Product, and participating in on-call support. The role also contributes to roadmap planning, architecture, shared components, development tooling, and continuous team improvement.

Develop and maintain native Android features for the Olo app, contributing to roadmap decisions, code reviews, testing, debugging, deployment, monitoring, and distributed systems reliability. The role involves collaborating with Product and mobile engineers, participating in on-call duties, improving delivery pipelines, and using modern AI coding tools such as Claude Code.

Develop and maintain the Olo iOS app, delivering complex features, improving architecture, addressing technical debt, and optimizing performance and reliability. Lead code reviews, mentor engineers, contribute to roadmap and technical decisions, improve CI/CD and testing automation, maintain production services, participate in architecture design, and support on-call operations. Collaborate with Product and stakeholders to deliver scalable, maintainable mobile software.

Leads platform engineering across multiple teams by designing scalable cloud-native infrastructure, reusable tooling, distributed systems, and AI/ML-enabled applications. Drives the full software development lifecycle, including architecture, coding, testing, deployment, maintenance, observability, and incident response. Provides technical leadership and mentorship, translates business needs into technical requirements, and ensures system reliability, performance, security, and continuous improvement.

Leads the design, development, deployment, and optimization of scalable data platforms and AI-driven applications. Builds data pipelines with Python, Scala, Spark, and Airflow on GCP; ensures data quality, governance, lineage, and reliability; and supports SAP e-commerce analytics. Develops RAG-based and agentic AI solutions using LangChain and LangGraph, mentors engineers, influences technical decisions, and drives full lifecycle delivery and continuous improvement.

Build and evolve core backend systems that review AI safety detections, identify ambiguous cases, automate triage, and close model feedback loops. Partner with product, design, and ML teams to own projects end-to-end, improve detection precision, and raise quality, operability, and engineering clarity across Samsara's Safety platform.

Develop and maintain PHP Laravel and JavaScript applications for web and cross-platform mobile clients. Responsibilities include writing tested code, refactoring legacy systems, optimizing database queries, participating in code reviews and sprint planning, documenting functionality, resolving production issues, and assisting with AWS deployments. The role also contributes to design patterns, coding standards, CI/CD practices, and ongoing product improvements.

Leads the architecture, implementation, security, scalability, and operation of enterprise identity and access management platforms. Serves as the technical authority for authentication, authorization, federation, and identity lifecycle management. Provides architectural guidance across teams, establishes engineering standards, mentors engineers, evaluates technologies, and improves platform observability and reliability. The role also advances AI-assisted development practices and long-term engineering strategy for secure, scalable SaaS services.

Develop, test, and maintain backend services, REST APIs, integrations, and workflow automation for customer-facing cloud platforms. Troubleshoot backend services, databases, and integrations; participate in code reviews, testing, and technical discussions; and collaborate with product, UX, data, security, QA, and platform teams. The role emphasizes maintainable code, enterprise systems, cloud technology, and continued backend engineering development.

Design, prototype, implement, test, deploy, and improve scalable intelligent software systems using agentic coding tools. Build multi-agent workflows with coordination and dynamic task execution, establish observability and traceability, and improve systems through real-world feedback. Collaborate across business, product, and engineering teams, contribute to AI-native development practices, and train others on agentic application development.

Build, launch, and maintain gameplay features for Driving Empire on Roblox. Responsibilities include writing performant Roblox Lua code, designing scalable systems, translating product requirements into technical tasks, collaborating with designers and artists, monitoring live features, improving reliability and workflows, participating in code reviews, and playtesting to improve player experience.

Build and maintain Ruby on Rails backend features for vulnerability management, including security dashboards, reports, and ingestion pipelines. Improve system performance, reliability, and scalability; collaborate across backend, frontend, product, design, and security teams; review code; address technical debt; and participate in on-call rotations. The role requires relational database experience, distributed-team collaboration, technical problem-solving, and contributions across the stack when needed.

Research, design, and develop algorithms and software systems for AI-driven CNC machining, including toolpath optimization, cutting strategies, and automated CAM workflows. Collaborate with manufacturing experts, data scientists, and software engineers to convert advanced concepts into reliable production software. The role emphasizes high-performance C++ development, computational geometry, numerical methods, optimization, and modern software engineering practices.

Develop software for CloudNC’s AI-powered CAM Assist product, collaborating with computer science and manufacturing experts to solve complex machining and toolpath-generation challenges. The role requires C++ development and experience with UI frameworks such as TypeScript, Angular, or React. Employees will receive training in factory operations and software capabilities; manufacturing experience is not required.

Build and maintain full-stack products using Python, React, GraphQL, and modern cloud technologies. Develop APIs, integrate internal and third-party services, create performant frontend applications, and deliver robust, scalable software across browsers and devices. Collaborate within cross-functional teams, contribute to design systems and component libraries, own features from inception through delivery, and promote maintainable coding practices. Bonus experience includes TypeScript, Next.js, AWS, infrastructure as code, event-driven systems, and AI tooling.

Design and develop clean, maintainable software for automated document-processing products. Collaborate with business stakeholders to translate requirements into product improvements, conduct code reviews, guide technical direction, mentor colleagues, and improve engineering practices. The role uses Golang, MySQL, Docker, Kubernetes, cloud infrastructure, and GitHub CI/CD while emphasizing product ownership, clean architecture, software craftsmanship, and technical communication.

Build and maintain front-end, full-stack, and mobile applications supporting financial crime workflows. Develop scalable cloud-native services, improve AML and customer screening systems, monitor operational and business metrics, and collaborate with product and engineering teams. The role requires secure, well-tested, maintainable software and contributes to preventing fraud, money laundering, KYC violations, and sanctions breaches.

Build and maintain Samsara's Cloud Governance Platform across AWS and GCP, focusing on cloud IAM guardrails, automated compliance controls, and software supply-chain security. Implement SAST/DAST and secure CI/CD patterns, design scalable, reliable systems, translate regulatory requirements into automated controls, collaborate cross-functionally, and own components end-to-end while mentoring teammates and shaping the roadmap.

Designs, builds, and maintains platform software and deployment tooling across desktop, on-premise, cloud, and air-gapped environments. Responsibilities include production container images, stateful distributed-system upgrades, CI/CD pipelines, infrastructure self-service capabilities, deployment instrumentation, testing strategy, application security, and customer releases. The engineer contributes to architecture, validates specifications, and oversees the quality of AI-generated code while collaborating with engineers, architects, designers, product managers, and stakeholders.