> Markdown version of [/jobs/ext/3404698-senior-software-engineer-platform-engineering](https://www.wearedevelopers.com/jobs/ext/3404698-senior-software-engineer-platform-engineering). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer, Platform Engineering - **Company:** IREN LLC - **Location:** Seattle, WA, United States - **Experience:** Expert - **Salary:** $152,000.0 - $228,000.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Microsoft Azure, Cloud Computing, Code Review, Continuous Integration, Information Engineering, Software Design Documents, Programming Tools, Distributed Systems, Machine Learning, Software Engineering, Management of Software Versions, Large Language Models, Kubernetes, Terraform, Stream Processing, Data Pipelines, Api Management - **Published:** September 22, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=cfeb2809307cf5cb ## About the Role * 6 or more years of professional software engineering experience, including several years operating in production what you built. * A record of owning system level design rather than components alone. You have been the person accountable for how a whole system fits together. * Deep experience with distributed systems, including failure modes you have personally debugged rather than only read about. * Demonstrated coaching. Be ready to name engineers who grew because of how you worked with them, and to say what actually changed. * Experience owning APIs that other teams depend on, including versioning and breaking change migrations. * Excellent communication, particularly in writing. You can write a design document another team can act on without a meeting. * Depth in at least one domain relevant to this team: data engineering, automation, developer tooling, AI enablement, or product engineering. * Experience leading delivery across more than one team, without formal authority over the people involved. * Strong fundamentals, and the judgement to recognize when the simple answer is the right one. Nice to have: * Experience as a formal tech lead, or in a staff level role. * Experience with cloud infrastructure, containers, and infrastructure as code (AWS, Azure, or GCP; Kubernetes; Terraform). * Experience with high volume data pipelines, streaming systems, or telemetry and time series data. * Experience putting machine learning or LLM systems into production. * Experience working close to physical infrastructure, where the software must account for hardware that fails. ## Description Because Platform Engineering builds for other teams, the boundaries matter as much as the internals. You will own the interfaces between your systems and everyone else's, negotiate what those contracts guarantee, and manage versioning and compatibility when something has to change. That work is as much communication as design, so we expect you to write clearly and to be comfortable in a room where people disagree. We also expect depth: senior engineers here are the person the company asks about a particular domain, whether that is data engineering, automation, developer tooling, AI enablement, or product engineering. Engineers at every level at IREN stay hands on, senior ones included., * Own system design from end to end: the problem statement, architecture, interfaces, data model, and rollout, including the parts other engineers will build. * Coach and develop the engineers around you. Give review that teaches, pair on hard problems, and hand over work that stretches people rather than keeping it because you would finish it faster. * Own the API contracts between your systems and other teams: negotiate what they guarantee, version them, and manage the migration when they change. * Set technical direction for your area, and write it down so other teams can build against it without needing a meeting first. * Break large, ambiguous problems into work that a team can sequence, estimate, and deliver. * Lead delivery across team boundaries, including the coordination and follow up that this actually requires. * Stay hands on. Write and review code, and carry the pager for what you own. * Own operations for your systems: monitoring, on-call, incident response, and the follow up that stops the same incident recurring. * Be the person the company can ask about your domain, and make what you know available to others rather than holding it. * Raise the standard through the systems around the code: CI/CD, observability, testing practice, and documentation., IE US Operations, Inc. "IREN" participates in E-Verify and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the United States. By applying for this position and submitting your resume and application materials, you consent to the processing of your personal information in accordance with our Job Applicant Privacy Statement available on our website at www.iren.com.