Senior Software Engineer - API Platform & Client Tooling

About this role

<div class="content-intro"><div> <div> <div class="gmail_quote"> <div> <div><span id="m_1770241969069985273m_-2746164444908759431gmail-docs-internal-guid-131e4fb0-7fff-b4e9-ff50-e8cf32449b1b">CoreWeave is The Essential Cloud for AI™. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to accelerate breakthroughs and turn compute into capability. Founded in 2017, CoreWeave became a publicly traded company (Nasdaq: CRWV) in March 2025. Learn more at <a href="http://www.coreweave.com/" target="_blank" data-saferedirecturl="https://www.google.com/url?q=http://www.coreweave.com&source=gmail&ust=1762613132717000&usg=AOvVaw3D-UOhNaqEvF5BEWxjYyAU">www.coreweave.com</a>.</span></div> </div> </div> </div> </div></div><h3 class="font-claude-response-body break-words whitespace-normal" data-sourcepos="1:1-1:20;0-19"><strong>What You'll Do:</strong></h3> <p class="font-claude-response-body break-words whitespace-normal" data-sourcepos="3:1-3:624;21-644">The Cloud Platform API team builds the API platform and the tooling that every other engineering team at CoreWeave uses to ship and consume APIs. This role sits with the group that owns CoreWeave's Go framework for building API services (server code and tooling), and the client surface it generates: SDKs, the CWIC command-line tool, and the Terraform provider. The team's charter is "one proto definition should produce every client surface, generated and released the day the API ships." Today that tooling is written by hand, one service at a time, and it lags the API; this role helps make generation the default path.</p> <h3 class="font-claude-response-body break-words whitespace-normal" data-sourcepos="5:1-5:20;646-665"><strong>About the role:</strong></h3> <p class="font-claude-response-body break-words whitespace-normal" data-sourcepos="7:1-7:650;667-1316">As a Senior Engineer on API Platform & Client Tooling, you'll design and build the code-generation pipeline that turns a single proto contract into Go SDKs, CWIC commands, and Terraform resources. You'll own components end to end, from the proto and API contract through the generated artifacts other teams depend on, and raise the quality bar for the developer experience across that whole surface. Because this team is CoreWeave's internal API consultancy, you'll also partner with other teams early in their design process to help them ship good, consistent APIs. Expect a mix of hands-on Go engineering, API design, and cross-team collaboration.</p> <p class="font-claude-response-body break-words whitespace-normal" data-sourcepos="9:1-9:24;1318-1341">In this role, you will:</p> <ul class="[li_&]:mb-0 [li_&]:mt-1 [li_&]:gap-1 [&:not(:last-child)_ul]:pb-1 [&:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3" data-sourcepos="11:1-16:98;1343-2251"> <li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="11:1-11:221;1343-1563">Own components of our API services framework (server code and tooling) and its generated artifacts: proto-driven code generation that emits Go SDKs, CWIC commands, and Terraform resources from a single source of truth.</li> <li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="12:1-12:168;1564-1731">Design and ship proto and API contracts, applying schema evolution and backwards-compatibility discipline, and help author and enforce CoreWeave API Standards in CI.</li> <li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="13:1-13:173;1732-1904">Champion developer experience across the CLI, SDKs, and Terraform provider: ergonomics, release cadence, and the quality bars that make every other CoreWeave team faster.</li> <li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="14:1-14:170;1905-2074">Work across authentication and identity, understanding how auth contracts (access keys, service accounts, JWKS, mTLS, and OIDC) flow from proto into generated clients.</li> <li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="15:1-15:79;2075-2153">Act consultatively: help other teams design and ship good APIs and services.</li> <li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="16:1-16:98;2154-2251">Drive team-level technical initiatives to completion and mentor junior and mid-level engineers.</li> </ul> <h3 class="font-claude-response-body break-words whitespace-normal" data-sourcepos="18:1-18:17;2253-2269"><strong>Who You Are:</strong></h3> <ul class="[li_&]:mb-0 [li_&]:mt-1 [li_&]:gap-1 [&:not(:last-child)_ul]:pb-1 [&:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3" data-sourcepos="20:1-24:82;2271-2704"> <li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="20:1-20:36;2271-2306">Production experience writing Go.</li> <li class="font-claude-response-body…