Software Engineer III, WAN Core, Google Cloud
Dublin, Ireland
Onsite
mid-level
September 21, 2026
€160,000
€38,000
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Job Description
In most instances, this position requires in-person interviews as part of the hiring process.
Minimum qualifications:
- Bachelor’s degree or equivalent practical experience.
- 2 years of experience with software development or 1 year of experience with an advanced degree in an industry setting.
- 2 years of experience with developing large-scale infrastructure, distributed systems or networks, or experience with compute technologies, storage or hardware architecture.
- Experience programming in C++.
Preferred qualifications:
- Master's degree or PhD in Computer Science or related technical fields.
- 2 years of experience with data structures and algorithms.
- Experience optimizing software system performance.
- Experience debugging complex, distributed software systems.
- Experience or interest in networking technologies/concepts such as Software Defined Networking (SDN).
- Understanding of Internet routing technologies and router/switch telemetry.
About the job
Google's software engineers develop the next-generation technologies that change how billions of users connect, explore, and interact with information and one another. Our products need to handle information at massive scale, and extend well beyond web search. We're looking for engineers who bring fresh ideas from all areas, including information retrieval, distributed computing, large-scale system design, networking and data storage, security, artificial intelligence, natural language processing, UI design and mobile; the list goes on and is growing every day. As a software engineer, you will work on a specific project critical to Google’s needs with opportunities to switch teams and projects as you and our fast-paced business grow and evolve. We need our engineers to be versatile, display leadership qualities and be enthusiastic to take on new problems across the full-stack as we continue to push technology forward.
The WAN Core team is responsible for Google's B4 network, a unique and rapidly expanding global private SDN backbone. As the largest private WAN, B4 interconnects Google's datacenters and campuses, supporting the vast majority of our inter-datacenter traffic. Our mission includes evolving B4 into AlphaNet, combining B2 and B4 to deliver the foundational networking for all of Google's technical infrastructure. We value a growth mindset, close collaboration, believing in creating an environment where all team members can thrive and make a significant impact.
Google Cloud accelerates every organization’s ability to digitally transform its business and industry. We deliver enterprise-grade solutions that leverage Google’s cutting-edge technology, and tools that help developers build more sustainably. Customers in more than 200 countries and territories turn to Google Cloud as their trusted partner to enable growth and solve their most critical business problems.
Individual pay is determined by factors including job-related skills, experience, and relevant education or training.
Ireland: €100000 - €102000 (EUR) + 15% bonus target + equity + benefits
Learn more about benefits at Google.
Responsibilities
- Analyze production data to find gaps/error patterns/opportunities for existing system.
- Design, develop, integrate and test the features for B4 availability, scaling, NPIs.
- Debug in highly integrated B4 ecosystem including traffic engineering and admission control.
- Prioritize work and ensure that incremental progress is made even if the problems at hand are difficult to solve in a short period of time.
- Help team members and partner teams understand the broader context, and solve the right problems at the right time.
Google is proud to be an equal opportunity workplace and is an affirmative action employer. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. See also Google's EEO Policy and EEO is the Law. If you have a disability or special need that requires accommodation, please let us know by completing our Accommodations for Applicants form.
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