Senior Software Engineer - API Platform & Client Tooling
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<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>
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</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>
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<h3 class="font-claude-response-body break-words whitespace-normal" data-sourcepos="18:1-18:17;2253-2269"><strong>Who You Are:</strong></h3>
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<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 whitespace-normal break-words pl-2" data-sourcepos="21:1-21:96;2307-2402">Experience designing and evolving APIs: versioning, backwards compatibility, and deprecation.</li>
<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="22:1-22:129;2403-2531">Experience building or maintaining client tooling: SDKs, CLIs, or infrastructure providers (Terraform, Pulumi, or Crossplane).</li>
<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="23:1-23:91;2532-2622">A track record of owning a project or initiative end to end and operating independently.</li>
<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="24:1-24:82;2623-2704">Clear communication about your technical contributions and how you collaborate.</li>
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<h3 class="font-claude-response-body break-words whitespace-normal" data-sourcepos="26:1-26:15;2706-2720"><strong>Preferred:</strong></h3>
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<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="28:1-28:121;2722-2842">Experience with code generation of any kind: codegen pipelines, templating, AST manipulation, or compiler/plugin work.</li>
<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="29:1-29:90;2843-2932">Experience with gRPC and protocol buffers, or another strongly-typed API/IDL toolchain.</li>
<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="30:1-30:92;2933-3024">Familiarity with the Buf toolchain, ConnectRPC, the Terraform Plugin Framework, or Cobra.</li>
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<p class="font-claude-response-body break-words whitespace-normal" data-sourcepos="32:1-32:36;3026-3061"><strong>Wondering if you're a good fit?</strong></p>
<p class="font-claude-response-body break-words whitespace-normal" data-sourcepos="34:1-34:289;3063-3351">We believe in investing in our people, and value candidates who can bring their own diversified experiences to our teams – even if you aren't a 100% skill or experience match. Here are a few qualities we've found compatible with our team. If some of this describes you, we'd love to talk.</p>
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<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="36:1-36:60;3353-3412">You love building tools that make other engineers faster.</li>
<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="37:1-37:116;3413-3528">You're curious about how a single source of truth can drive many downstream surfaces without falling out of sync.</li>
<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="38:1-38:130;3529-3658">You care about developer experience: clear error messages, sensible defaults, and interfaces that stay consistent as they grow.</li>
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<p class="font-claude-response-body break-words whitespace-normal" data-sourcepos="40:1-40:19;3660-3678"><strong>Why CoreWeave?</strong></p>
<p class="font-claude-response-body break-words whitespace-normal" data-sourcepos="42:1-42:327;3680-4006">At CoreWeave, we work hard, have fun, and move fast! We're in an exciting stage of hyper-growth that you will not want to miss out on. We're not afraid of a little chaos, and we're constantly learning. Our team cares deeply about how we build our product and how we work together, which is represented through our core values:</p>
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<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="44:1-44:26;4008-4033">Be Curious at Your Core</li>
<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="45:1-45:20;4034-4053">Act Like an Owner</li>
<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="46:1-46:20;4054-4073">Empower Employees</li>
<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="47:1-47:43;4074-4116">Deliver Best-in-Class Client Experiences</li>
<li class="font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="48:1-48:24;4117-4140">Achieve More Together</li>
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