Fern logo
DevTools/Cloud
Enterprise SaaS

Fern

Open-source SDK & API documentation platform

CORE INFO

$22.3M
Total Funding
Other / Unspecified
Round
2022
Founded
20-50
Team Size
New York, NY, United States
Headquarters

Fern is an innovative open-source platform designed to streamline the development process by enabling developers to generate software development kits (SDKs) and application programming interface (API) documentation from API definitions. By supporting a range of API specifications such as OpenAPI, AsyncAPI, OpenRPC, and gRPC, Fern allows users to produce type-safe SDKs in multiple programming languages, including TypeScript, Python, Go, Java, Ruby, C#, and PHP. The platform is tailored to enhance the developer experience by integrating with popular tools like GitHub, Postman, NPM, PyPI, NuGet, and RubyGems. This integration facilitates the creation of interactive, brand-tailored API documentation, making it easier for companies to provide high-quality developer experiences. Fern's mission is to democratize the process of offering best-in-class developer tools, enabling companies of all sizes to deliver robust API infrastructures without extensive internal resources.

WHY WE WOULD WORK AT FERN

Innovative Mission

Join a company dedicated to democratizing developer tools, enabling businesses to deliver robust API infrastructures effortlessly.

Dynamic Team Culture

Collaborate with a diverse team of 20-50 talented individuals, fostering a vibrant and innovative work environment.

Strong Financial Backing

Benefit from $22.3M in funding and support from top investors like Y Combinator and Bessemer Venture Partners.

Cutting-Edge Technology

Work with a platform that supports leading API specifications and integrates with tools like GitHub and Postman.

Impactful Clientele

Contribute to projects for industry leaders such as Nvidia, Adobe, and Square, enhancing your professional portfolio.

Growth Opportunities

Expand your skills in a fast-paced environment, leveraging technologies like TypeScript, Python, and more.

MARKET AND TRACTION

NOTABLE CUSTOMERS

  • Fern's platform is utilized by prominent companies, including Nvidia, Adobe, and Square.

  • Other notable clients include Twilio, Dropbox, and Auth0, showcasing the platform's wide acceptance in the tech industry.

  • Companies like Intuit, Intercom, and LaunchDarkly also leverage Fern's capabilities, indicating its versatility across different sectors.
  • GROWTH TACTICS

  • Fern integrates with popular tools like GitHub, Postman, and NPM to streamline the development process and enhance the developer experience.

  • By supporting a range of API specifications such as OpenAPI and gRPC, Fern allows users to produce type-safe SDKs in multiple programming languages, broadening its appeal to developers.

  • The platform's open-source nature and mission to democratize developer tools enable companies of all sizes to deliver robust API infrastructures without extensive internal resources.
  • KEY METRICS

    ✦ KEY METRIC
  • Fern has raised approximately $22.3 million in funding, backed by Y Combinator and Bessemer Venture Partners.

  • Founded in 2022, the company has grown to a team size of 20-50 employees, indicating rapid expansion.

  • Fern's headquarters are located in New York, NY, United States, positioning it in a major tech hub.
  • COMPETITIVE ADVANTAGE

  • Fern's ability to generate SDKs in multiple programming languages, including TypeScript, Python, and Go, sets it apart from competitors.

  • The platform's integration with tools like NuGet and RubyGems enhances its utility for developers, providing a seamless workflow.

  • By offering interactive, brand-tailored API documentation, Fern elevates the developer experience, making it a preferred choice for companies seeking high-quality API management solutions.
  • PRODUCT AND TECH

    Open-Source SDK Platform

    Fern provides an open-source platform that allows developers to generate software development kits (SDKs) from API definitions, supporting a wide range of API specifications. This streamlines the development process, enabling efficient and type-safe SDK production.

    API Documentation Generation

    Fern facilitates the creation of interactive, brand-tailored API documentation, enhancing the developer experience. This feature allows companies to provide high-quality, user-friendly documentation that integrates seamlessly with popular tools.

    Multi-Language SDK Support

    The platform supports SDK generation in multiple programming languages, including TypeScript, Python, Go, Java, Ruby, C#, and PHP. This versatility ensures that developers can work in their preferred language, broadening the platform's applicability.

    API Specification Compatibility

    Fern is compatible with various API specifications such as OpenAPI, AsyncAPI, OpenRPC, and gRPC. This compatibility ensures that developers can work with the most suitable specification for their project needs.

    Tool Integration

    Fern integrates with widely-used tools like GitHub, Postman, NPM, PyPI, NuGet, and RubyGems. This integration simplifies the development workflow, allowing for seamless transitions between different stages of the API lifecycle.

    COMPANY CULTURE

    Values

  • Democratizing access to high-quality developer tools

  • Commitment to open-source innovation

  • Emphasizing collaboration and community engagement
  • Operating Principles

  • Prioritize seamless integration with popular developer tools

  • Focus on delivering type-safe SDKs across multiple languages

  • Ensure brand-tailored, interactive API documentation
  • Benefits

  • Opportunity to work with leading tech companies like Nvidia and Adobe

  • Access to a dynamic and supportive team environment

  • Participation in Y Combinator and backing by top venture partners
  • Team Cadence

  • Agile development cycles to adapt to evolving tech landscapes

  • Regular team syncs to align on project goals and milestones

  • Encouragement of cross-functional collaboration
  • Learning & Growth

  • Exposure to cutting-edge API technologies and practices

  • Opportunities for professional development and skill enhancement

  • Support for continuous learning and innovation
  • COMPENSATION SNAPSHOT

    Cohort too small to score (n < 5). Per-role bands shown below.
    Based on publicly available compensation ranges from job postings; exact compensation may vary.
    Engineering IC3n = 3
    $210K – $240Kmedian $225K
    Los Angeles / Bay Area
    Engineering IC4n = 5
    $200K – $240Kmedian $220K
    Los Angeles / Bay Area
    Engineering Managern = 4
    $210K – $263Kmedian $237K
    Los Angeles / Bay Area
    Sales ICn = 3
    $180K – $260Kmedian $220K
    New York
    US-only in v1 · only categories with n > 2 shown · in-person / hybrid / remote treated separately where n ≥ 3

    HIRING SIGNAL

    0
    Open roles on their careers page
    Snapshot via live ATS poll
    —
    Net new roles in the last 90 days
    Available once weekly history accrues
    90-Day VelocityV2 · BACKFILL
    Trend builds weekly as historical rows accrue
    SourcesGreenhouseLeverAshbyWorkableSmartRecruitersRipplingRecruiteeFallback · Wellfound, YC Work-at-a-Startup, careers-page scrape

    KEY COMPANY ANNOUNCEMENTS

    Filter
    12 announcements · ranked by importance
    Jan 8, 2026MILESTONEPostman acquires Fern | Postman Blogblog.postman.com
    Apr 10, 2025FUNDINGFern raises a Series A to meet the growing demand for SDKs and API Docs | Fernbuildwithfern.com
    Apr 10, 2025FOUNDER PROFILEMeet the founders of Fern: CEO Danny Sheridan and CTO Deep Singhvi - Bessemer Venture Partnersbvp.com
    Apr 1, 2023FUNDINGFern: Funding, Team & Investorsstartupintros.com
    Sep 1, 2026PRODUCTHow we built Fern Agentbuildwithfern.com
    May 18, 2026ESSAYI'm making our documentation agent-friendly (and how I'm not)buildwithfern.com
    Feb 5, 2025INTERVIEWBeyond API Documentation with Fern - YouTubeyoutube.com
    Feb 1, 2023PRESSLaunch YC: Fern - SDKs for your API ⚡ | Y Combinatorycombinator.com
    Oct 8, 2024PRODUCTShow HN: Generate SDKs with gRPC and RESTbuildwithfern.com
    Mar 1, 2026EXEC HIREExcited to share I've joined the Fern team as Head of GTM/Revenue. AI is fueling exponential increases in API creation and adoption, and a world-class API experience has never been more critical to… | Nate Repensky | 70 commentslinkedin.com
    Sep 30, 2025CUSTOMER WINMultiple products, one docs site: Webflow case study | Fernbuildwithfern.com
    May 19, 2026PRODUCTIntroducing Fern Replaybuildwithfern.com