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Senior Software Engineer - Systems Ireland Jobs

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Senior Software Engineer - Integrations & Partnerships
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Join a high-impact Integrations & Partnerships Team as a Senior Software Engineer. Leverage your 5+ years of Java expertise and event-driven architecture to build scalable APIs and cloud-native solutions using Docker and Serverless. Based in Ireland, you’ll shape a distributed system impacting mi...
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Ireland
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Phorest
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Senior Software Development Engineer
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Ireland , Galway
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50000.00 - 125000.00 EUR / Year
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CVS Health
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Senior Software Development Engineer - Frontend
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Senior Frontend Software Engineer sought by CVS Health to transform healthcare technology in Galway, Ireland. You will build a connected health hub using React, TypeScript, and modern tools like Vite, Nx, and Tailwind. This role requires 6+ years of experience, CI/CD expertise, and mentoring juni...
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Ireland , Galway
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CVS Health
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Senior Software Data Engineer
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Senior Software Data Engineer sought for a Galway, Ireland-based role. Leverage 6+ years of enterprise experience in RDBMS, AWS, and object-oriented programming to build custom data pipelines. Proficiency in Python, Java, or C# with Pandas/NumPy is key, alongside CI/CD and REST API integration. J...
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Ireland , Galway
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68.75 EUR / Hour
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Nicoll Curtin
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Senior Software Engineer
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Join Fidelity's Asset Management Technology team in Galway as a Senior Software Engineer. You will design and deploy AWS applications using Java, Spring Boot, Kafka, and Angular. This role involves full-stack development in an Agile CI/CD environment, translating business needs into high-quality,...
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Ireland , Galway
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Fidelity Investments
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Senior Software Engineer- Video Signalling
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Join our team in Ireland as a Senior Software Engineer specializing in Video Signalling. Design and optimize core infrastructure for real-time video using Java and cloud platforms like AWS. Ensure high performance and scalability for secure video communications, with benefits including competitiv...
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Ireland
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Stytch
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Senior Software Engineer
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Join Microsoft Security in Dublin as a Senior Software Engineer. Develop critical authentication and authorization components using .NET, C#, and distributed services. Collaborate cross-functionally to build secure, scalable solutions for a global security cloud. This role requires a background i...
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Ireland , Dublin
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Microsoft Corporation
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Senior Software Engineer - Self-Hosted Infrastructure
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Join Tines in Ireland as a Senior Software Engineer for Self-Hosted Infrastructure. You will design and build features and tooling for seamless customer installations, focusing on containerized environments like Kubernetes. This role offers competitive salary, equity, private healthcare, and full...
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Ireland
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Tines
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Senior Software Engineer
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Join Twilio's Voice Connectivity Trust team in Ireland as a Senior Software Engineer. Design and implement high-throughput, low-latency services using Java and cloud infrastructure (AWS/GCP). You'll own the full lifecycle, from design to on-call support, for distributed systems. We offer competit...
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Ireland
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Stytch
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Agentic AI - Senior Software Engineer
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Join Mastercard's Foundry R&D in Dublin as a Senior Software Engineer on the Agentic AI team. Apply your expertise in Generative AI, LLMs, and frameworks like LangGraph to build scalable tooling and services. You'll design AI-enabled applications and developer workflows using Java/Python, React, ...
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Ireland , Dublin 18
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Mastercard
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Senior Software Engineer
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Join Twilio as a Senior Software Engineer in Ireland. Design and operate the critical, high-scale infrastructure powering billions of webhooks globally. Leverage your 5+ years of backend experience with Java and cloud technologies to build reliable, scalable systems. Enjoy competitive pay, genero...
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Ireland
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Stytch
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Senior Full-Stack Software Engineer
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Ireland , Dublin
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93280.00 - 139920.00 EUR / Year
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Citi
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Senior Software Engineer - AI Agents
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Ireland , Dublin
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Microsoft Corporation
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Senior Software Engineer
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Join our Hybrid Cloud CTO team in Galway as a Senior Software Engineer. Drive high-impact incubation projects in AI and cloud-native technologies, leveraging your expertise in Python, LLMs, and Kubernetes. This senior individual contributor role offers a chance to shape the future of emerging sof...
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Ireland , Galway
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Hewlett Packard Enterprise
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Senior Software Engineer - Customer Experience Platform
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Ireland
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Hopper
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Senior Software Engineer, Full Stack - Fintech
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Ireland , Dublin
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Hopper
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Senior Software Engineer - Acquisition & Monetization
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Ireland
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Tines
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Senior Software Engineer
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Ireland , Dublin
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Microsoft Corporation
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Senior Software Engineer- Identity
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Ireland , Dublin
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Microsoft Corporation
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Senior Software Development Engineer in Test
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Ireland , Dublin
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ResMed
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About the Senior Software Engineer - Systems role

Explore Senior Software Engineer - Systems jobs and discover a pivotal role at the intersection of software development and core infrastructure. Professionals in these positions are the architects and builders of the foundational platforms, services, and frameworks that power large-scale, reliable, and performant applications. Unlike roles focused solely on end-user features, Senior Software Engineers in Systems delve into the underlying engine, optimizing for scalability, resilience, and efficiency to support millions of users and complex data flows.

Typically, individuals in this profession are responsible for designing, developing, and maintaining critical system-level software. This includes creating distributed systems, high-throughput data pipelines, low-latency services, and robust platform infrastructure. Common responsibilities involve architecting scalable solutions, conducting deep-dive performance analysis and debugging across the entire software stack, establishing engineering best practices and standards, and providing technical leadership and mentorship to other engineers. They own the full lifecycle of system components, from conceptual design and implementation to deployment, monitoring, and iterative improvement.

The role demands a unique blend of deep technical expertise and strategic vision. Typical skills and requirements include extensive experience with systems programming languages such as C++, Go, Java, or Rust, and a profound understanding of computer science fundamentals like data structures, algorithms, operating systems, and networking. Expertise in distributed systems concepts—including consensus, consistency, and fault tolerance—is paramount. These engineers are proficient in profiling and debugging complex systems, often needing to trace issues from high-level application logic down to native code or kernel interactions. A performance-first mindset, experience with cloud-native technologies and containerization, and a strong grasp of CI/CD pipelines and observability tools are standard expectations. Leadership skills are crucial, as these senior professionals champion technical excellence, drive architectural decisions, and elevate the entire engineering organization through mentorship and the establishment of a culture focused on robustness and scalability.

For those seeking to solve the most challenging engineering problems and build the bedrock upon which digital experiences stand, exploring Senior Software Engineer - Systems jobs offers a career path defined by high impact, continuous learning, and shaping the technological future of an organization.

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