Principal Engineer jobs in Ireland

• Collaborate with multi-functional engineering teams to deliver the platform and contribute to open-source projects.

• Work on building a very resilient distributed system at eBay's edges that can proxy all eBay traffic and also eBay's service mesh for all of our services with unparalleled observability.

• Work with other developers in different phases of system development.

• Build and debug large scale distributed systems and help with observability and monitoring of the system.

• Contribute your knowledge and experience of the networking topology (TCP and HTTP stack) to solve any network related issues encountered by the system, deploying and troubleshooting large scale infrastructure.

• Hands-on development experience with strong analytical skills.

• Familiarity and proven understanding of networking technologies like BGP, anycast is a must, experience with TCP/IP networking and familiarity with TCP, UDP, SSL and HTTP Protocols.

• Hands-on experience with various programming languages like C/C++, GoLang to build the system and also build automation around it for better observability and remediation, any experience with kernel programming and experience with Python is a plus!

• Distributed systems with design and implementation of network communication using container networking technologies.

• Multi-threaded programming: Telemetry infrastructure to accumulate and export statistical information.

• Excellent debugging and triaging skills and strong expertise in agile development.

• Familiarity with L4 Networking layer and Kubernetes is a plus.

What you will accomplish

• Lead the full lifecycle of software projects — from requirements gathering through design, development, testing, and deployment.

• Build and maintain tools that automate network lifecycle management and infrastructure deployment.

• Develop and configure monitoring systems to support network engineering operations.

• Implement new features, fix issues, and maintain high standards of software quality and test coverage.

• Model, manage, and analyze network data to improve automation and operational efficiency.

• Collaborate with engineers across infrastructure, operations, and AI teams to develop innovative solutions.

What you will bring

• 5+ years of software development experience, with at least 3 years in project or functional leadership.

• Proficiency in Go, Java, and Python , with strong debugging and problem-solving skills.

• Experience with CI/CD pipelines , Docker , Kubernetes , and time-series databases (TSDB).

• Proficient in SDLC protocols, data modeling, and systems integration.

• Working knowledge of UNIX/Linux environments and familiarity with network protocols (TCP/IP, routing, switching).

• Bachelor’s or Master’s degree in Computer Science or related field, or equivalent experience in the field.

Preferred qualifications

• Familiarity with LLM-based tools (e.g., ChatGPT, Claude Code) for engineering productivity.

• Experience with Cisco Nexus Dashboard Fabric Controller or Adobe Flex .

• Strong understanding of network automation, monitoring frameworks , and large-scale distributed systems.

The cool part

• Work on modern automation technologies powering one of the world’s largest e-commerce infrastructures.

• Collaborate with experienced engineers across networking, AI, and systems development.

• Compose eBay’s next-generation network management and monitoring solutions — at global scale.

• Design, develop, and maintain both client-side and server-side applications for eBay’s data platforms.

• Build responsive, accessible web applications using ReactJS , JavaScript , and modern UI frameworks.

• Develop and optimize backend services and RESTful APIs using Java and Spring Boot .

• Deploy, monitor, and manage cloud-native applications using Kubernetes and Docker .

• Collaborate closely with product, design, DevOps, and data engineering teams to deliver robust, integrated solutions.

• Conduct code reviews, testing, and performance tuning to ensure quality and scalability.

• 7+ years of experience as a Full Stack Engineer or in a similar software development role.

• Strong proficiency in Java , Spring Boot , and REST API design and integration.

• Expertise in ReactJS , JavaScript (ES6+), HTML, and CSS for dynamic, responsive UI development.

• Hands-on experience with Kubernetes , Docker , and CI/CD pipelines.

• Familiarity with cloud platforms such as AWS, GCP, or Azure.

• Excellent problem-solving, communication, and collaboration skills.

• Experience with microservices architecture and GraphQL .

• Familiarity with Agile/Scrum methodologies and modern testing frameworks.

• Proficiency in distributed systems and standard methodologies for scalable web services.

• Work on impactful applications that support eBay’s data and analytics ecosystem.

• Collaborate with a multi-functional team encouraging innovation across eBay’s data platforms.

• Build modern, cloud-native systems that power insights for one of the world’s largest commerce platforms.

RoleResponsibilities:

• Perform field-based installation, configuration, maintenance, and upgrades of complex Applied Materials equipment, ensuring compliance with technical specifications and operational standards
• Use digital analytics fortroubleshooting
• Apply basic diagnostic techniques to assess equipment and address technical issues
• Perform preventative and corrective maintenance on electrical, vacuum, mechanical, plasma, hydraulic, and gas systems (training provided)
• Coordinate and communicate directly with customers
• Fulfil additional duties, as assigned

MinimumQualifications:

• Successful completion of an Associate Degree (or higher) in a relevant field.
• At least 2 years of work experience in customer/field service support, or a related technical field
• Ability to read and interpret electrical and mechanical schematics
• Experience diagnosing and resolving basic technical challenges
• Basic mechanical aptitude with pneumatics, hydraulics, electronics, vacuum, or thermodynamics
• Familiarity with hand tools and their appropriate usage, including digital multimeters
• Effective written and verbal communication skills
• Basic knowledge of Microsoft Excel, Word, andPowerPoint
• Able to meet all on-site requirements, including safety and environmental guidelines

Physical Requirements:

This position often requires extensive walking, standing for extended periods of time, working in tight spaces, bending, squatting, twisting, kneeling, reaching, climbing stairs and ladders, working at height, lifting up to 35 lbs., the ability to distinguish between colors and working with electricity, the ability to work in an environment with noise that may be difficult for some individuals with sensitivity to noise, and the use of hand and power tools.

Additionally, because this position generally involves working in a clean room, it requires the use of appropriate Personal Protective Equipment such as coveralls, hoods, booties, safety glasses, gloves, respirators, chemical aprons, and face shields.

As a on the Dublin team, you’ll play a key role in building, optimizing, and maintaining our Hadoop-based data warehouse and large-scale data pipelines. This is a hands-on engineering role where you’ll collaborate closely with data engineers, analysts, and platform teams to ensure our data platforms are scalable, reliable, and secure.

What you will accomplish

• Design, develop, and maintain robust, scalable data pipelines using Hadoop and related ecosystems.

• Implement and optimize ETL processes for both batch and streaming data needs across analytics platforms.

• Collaborate cross-functionally with analytics, product, and engineering teams to align technical solutions with business priorities.

• Ensure data security, reliability, and compliance across the entire infrastructure lifecycle.

• Troubleshoot distributed systems and contribute to performance tuning, observability, and operational excellence.

• Continuously learn and apply new open-source and cloud-native tools to improve data systems and processes.

What you will bring

• 6+ years of experience in data engineering, with a strong foundation in distributed data systems.

• Proficiency with Apache Kafka, Flink, Hive, Iceberg, and Spark SQL in large-scale environments.

• Working knowledge of Apache Airflow for orchestration and workflow management.

• Strong programming skills in Python , Java (Spring Boot) , and SQL across various platforms (e.g., Oracle, SQL Server).

• Experience with CI/CD, monitoring, and cloud-native tools (e.g., Jenkins, GitHub Actions, Docker, Kubernetes, Prometheus, Grafana).

• Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent practical experience).

The cool part

• Work on one of eBay’s most impactful data infrastructure platforms, supporting global analytics and insights.

• Join a collaborative, innovative engineering culture that embraces open-source and continuous learning.

• Solve complex, high-scale data challenges that directly shape how eBay makes data-driven decisions.

As a Senior Software Engineer, you will help shape the next generation of our Hadoop-based analytics infrastructure. eBay operates one of the world’s largest Hadoop deployments, with . You’ll join a team of passionate engineers who thrive on building at scale and contributing to open-source innovation.

• Lead the design and development of scalable, secure analytics infrastructure aligned with eBay’s platform vision.

• Build and optimize production-grade frameworks and features using Hadoop, Spark, and Iceberg.

• Contribute to open-source projects that advance both eBay and the broader data community.

• Collaborate across engineering teams to drive innovation, resiliency, and performance at massive scale.

• Solve complex system challenges with creativity, data-driven thinking, and technical depth.

• 7+ years of software engineering experience with proven expertise in Java and distributed systems design.

• Strong knowledge of Hadoop ecosystem technologies such as Hadoop, Spark, Iceberg, and YuniKorn.

• Deep understanding of computer science fundamentals, performance tuning, and concurrency.

• Experience working in Linux environments with strong networking and troubleshooting skills.

• A collaborative mindset with excellent communication and analytical abilities.

• Bachelor’s or Master’s degree in Computer Science, or equivalent experience in the field.

• Shape the future of eBay’s Hadoop ecosystem and big-data infrastructure.

• Work at global scale, driving analytics that power millions of eBay experiences.

• Join a culture that encourages open-source contribution, innovation, and collaboration.