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Series A Developer tools companies in San Francisco

IDEs, runtimes, frameworks, and platforms built primarily for engineers. Filtered to Series A-stage companies headquartered in San Francisco.

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Built from a search like: Top Series A Developer tools companies in San Francisco

Ranked by current headcount across Series A Developer tools companies in San Francisco. Refreshed daily.

  1. 1
    Anything· San Francisco, California, United States

    Anything turns English into apps.It's the AI product engineer for the next wave of entrepreneurs. Everything you need to make money on the internet built in.Our team is small and talent dense by design. We’ve built things people love. So we care that Anything lets anyone build things people love.

    • Series A
    • 2.9k employees
    • Founded 2021
  2. 2
    Humand· San Francisco, California, United States

    At Humand, we empower companies to digitize their internal communication, culture, and HR processes in one unified platform, recognizing that the future of mid market and enterprise software is mobile.Our platform connects your entire organization by digitizing and humanizing people management processes. This positively impacts employee experiences and provides valuable data for informed decision-making. We ensure that all employees, particularly those without direct access to computers, are engaged and connected with your company.We foster a digital community within your organization that enhances the work environment, promoting a greater sense of belonging, authentic connections, and collaboration among employees.Humand helps organizations become more agile, digital, and mobile, enabling instant and targeted communication with all employees through push notifications.Join us in transforming your workplace into a more connected and engaged environment!

    • Series A
    • 677 employees
    • Founded 2019
  3. 3
    Woflow· San Francisco, California, United States

    Woflow builds AI Agents for enterprises.Woflow is backed by investors including Base 10 Partners, Craft Ventures and Construct Capital.

    • Series A
    • 598 employees
    • Founded 2017
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  5. 4
    Printify· San Francisco, Minnesota, United States

    Printify is the technology platform that makes it possible for anyone anywhere to sell customized merchandise without the hassle and risks of having to hold inventory, negotiate contracts, or fulfill orders around the world. Because Printify works on an on-demand basis, sellers are not charged until an order is made, meaning anyone can become an overnight entrepreneur and start selling with minimal risk. So far, more than 12 million people have signed up to build businesses by putting their designs on the 1000+ customizable, high-quality products in the Printify catalog. This has generated tens of millions of orders that are fulfilled by the 85+ world-leading print houses in Printify’s trusted global network. In November 2024, Printify merged with production-on-demand powerhouse, Printful, to form one unified company. The two leading platforms remain, but they’re powered by one world-class team dedicated to helping eCommerce businesses around the world find their success.

    • Series A
    • 558 employees
    • Founded 2015
  6. 5
    Nexus· San Francisco, California, United States

    Traditional blockchains were designed for human users. Nexus Laboratories is building the verifiable infrastructure required for a future increasingly mediated by AI-powered systems and applications.As the core development team behind Nexus, we have engineered a next-generation blockchain purpose-built for verifiable finance and the emerging AI economy. Powered by the advanced Nexus zkVM and a unique dual-core architecture, our network enables autonomous agents, intelligent markets, and high-performance DeFi applications to execute with cryptographic trust at global scale.The Nexus Ecosystem Architecture:The Nexus Layer 1: A parallel, EVM-compatible chain with a built-in financial engine.The Nexus Exchange: An enshrined native coprocessor for ultra-low latency, verifiable execution.USDX: A native, institutional-grade margin stablecoin fully backed by U.S. Treasuries.Capping off a highly successful testnet phase that mobilized 3.2M+ verified users and generated over 77B zero-knowledge proofs, Nexus has officially launched its mainnet and native token ($NEX). We are rapidly expanding our ecosystem to support the next generation of financial and AI applications.Core Focus Areas: Layer 1 Blockchain • Zero-Knowledge Proofs (zkVM) • Agentic Finance • Enshrined Coprocessors • Web3 Infrastructure

    • Series A
    • 450 employees
    • Founded 2022

Find engineers at Series A Developer tools companies in San Francisco

Searching for “engineers at top Series A Developer tools companies in San Francisco” surfaces this slice of the market. The list above ranks Developer tools companies headquartered in San Francisco whose latest disclosed round is Series A, by current headcount, drawn from public LinkedIn and Crunchbase records. With 391 matching companies in Refolk’s index, this is a tight read on where the Developer tools talent in San Francisco is heating up.

Three filters at once narrows the field hard. The companies that survive all three - Series A, Developer tools, in San Francisco - are usually the most targeted recruiting pool a hiring manager can ask for. Senior engineers, founding designers, and product leads here are about to become Developer tools’s next operators and angel investors.

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How this list is built

Refolk pulled Developer tools companies headquartered in San Francisco whose latest disclosed funding round is Series A from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes once a day.

Last refreshed: Wed, 05 Aug 2026 12:58:36 GMT

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The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

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