Senior Software Engineer - API Platform & Client Tooling

CoreWeave; Livingston (NJ); On-site; USD 153,000 - 204,000; Full time

Benefits offered by this job

Medical Insurance

Life Insurance

Disability Insurance

Flexible Spending Account

Health Savings Account

Tuition Reimbursement

Employee Stock Purchase Program

Mental Wellness benefits

Family-Forming support

Parental Leave

Childcare support

401(k) with employer match

Flexible PTO

Catered lunch

Job summary

CoreWeave is building the API Platform & Client Tooling team to create a go-based code-generation pipeline that turns a proto contract into Go SDKs, CWIC commands, and Terraform resources. This Senior Engineer will own end-to-end components from proto to generated artifacts used by multiple teams.

You’ll partner across teams to enforce API standards, improve developer experience, and shape authentication-related contracts as they flow into generated clients.

Qualifications

• Production experience writing Go.
• Experience designing and evolving APIs: versioning, backwards compatibility, deprecation.
• Experience building or maintaining client tooling: SDKs, CLIs, or infrastructure providers (Terraform, Pulumi, or Crossplane).
• A track record of owning a project or initiative end to end and operating independently.
• Clear communication about your technical contributions and how you collaborate.

Responsibilities

• Own components of our API services framework and its generated artifacts: proto-driven code generation that emits Go SDKs, CWIC commands, and Terraform resources from a single source of truth.
• Design and ship proto and API contracts, applying schema evolution and backwards-compatibility discipline, and help author and enforce CoreWeave API Standards in CI.
• Champion developer experience across the CLI, SDKs, and Terraform provider: ergonomics, release cadence, and the quality bars that make every other CoreWeave team faster.
• Work across authentication and identity, understanding how auth contracts flow from proto into generated clients.
• Act consultatively: help other teams design and ship good APIs and services.
• Drive team-level technical initiatives to completion and mentor junior and mid-level engineers.

Skills

Go

APi design

Client tooling

End-to-end ownership

Communication

Tools

Terraform

Pulumi

Crossplane

Buf

ConnectRPC

Cobra

Terraform Plugin Framework

Job description

What You’ll Do:

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.

About the role:

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.

In this role, you will:

• 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.
• Design and ship proto and API contracts, applying schema evolution and backwards‑compatibility discipline, and help author and enforce CoreWeave API Standards in CI.
• Champion developer experience across the CLI, SDKs, and Terraform provider: ergonomics, release cadence, and the quality bars that make every other CoreWeave team faster.
• Work across authentication and identity, understanding how auth contracts (access keys, service accounts, JWKS, mTLS, and OIDC) flow from proto into generated clients.
• Act consultatively: help other teams design and ship good APIs and services.
• Drive team-level technical initiatives to completion and mentor junior and mid-level engineers.

Who You Are:

• Production experience writing Go.
• Experience designing and evolving APIs: versioning, backwards compatibility, and deprecation.
• Experience building or maintaining client tooling: SDKs, CLIs, or infrastructure providers (Terraform, Pulumi, or Crossplane).
• A track record of owning a project or initiative end to end and operating independently.
• Clear communication about your technical contributions and how you collaborate.

Preferred:

• Experience with code generation of any kind: codegen pipelines, templating, AST manipulation, or compiler/plugin work.
• Experience with gRPC and protocol buffers, or another strongly‑typed API/IDL toolchain.
• Familiarity with the Buf toolchain, ConnectRPC, the Terraform Plugin Framework, or Cobra.

The base salary range for this role is $153,000 to $204,000. The starting salary will be determined based on job-related knowledge, skills, experience, and market location. We strive for both market alignment and internal equity when determining compensation. In addition to base salary, our total rewards package includes a discretionary bonus, equity awards, and a comprehensive benefits program (all based on eligibility).

What We Offer

The range we’ve posted represents the typical compensation range for this role. To determine actual compensation, we review the market rate for each candidate which can include a variety of factors. These include qualifications, experience, interview performance, and location.

In addition to a competitive salary, we offer a variety of benefits to support your needs. The benefits below reflect our US-based offerings; for roles in other locations, benefits vary and are shared during the hiring process. These include:

• Medical, dental, and vision insurance – 100% paid for by CoreWeave
• Company-paid Life Insurance
• Voluntary supplemental life insurance
• Short and long-term disability insurance
• Flexible Spending Account
• Health Savings Account
• Tuition Reimbursement
• Ability to participate in Employee Stock Purchase Program (ESPP)
• Mental Wellness Benefits through Spring Health
• Family‑Forming support provided by Carrot
• Paid Parental Leave
• Flexible, full-service childcare support with Kinside
• 401(k) with a generous employer match
• Flexible PTO
• Catered lunch each day in our office and data center locations
• A casual work environment
• A work culture focused on innovative disruption

California Applicants

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Equal Opportunity & Accommodations

CoreWeave is an equal opportunity employer, committed to fostering an inclusive and supportive workplace. All qualified applicants and candidates will receive consideration for employment without regard to race, color, religion, sex, disability, age, sexual orientation, gender identity, national origin, veteran status, or genetic information.

As part of this commitment and consistent with the Americans with Disabilities Act (ADA), CoreWeave will ensure that qualified applicants and candidates with disabilities are provided reasonable accommodations for the hiring process, unless such accommodation would cause an undue hardship. If reasonable accommodation is needed, please contact: [e-mail].

Export Control Compliance

This position requires access to export controlled information. To conform to U.S. Government export regulations applicable to that information, applicant must either be (A) a U.S. person, defined as a (i) U.S. citizen or national, (ii) U.S. lawful permanent resident (green card holder), (iii) refugee under 8 U.S.C. § 1157, or (iv) asylee under 8 U.S.C. § 1158, (B) eligible to access the export controlled information without a required export authorization, or (C) eligible and reasonably likely to obtain the required export authorization from the applicable U.S. government agency. CoreWeave may, for legitimate business reasons, decline to pursue any export licensing process.