Top Series C SaaS companies

Software-as-a-service vendors selling subscription cloud software to other businesses. Filtered to companies whose latest disclosed round is Series C.

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Ranked by current headcount across Series C SaaS companies. Refreshed daily.

1
Amazon Fulfillment Technologies & Robotics· North Reading, Massachusetts, United States
On the Fulfillment Technologies & Robotics Team, we build dynamic partnerships between people and intelligent machines. This intricate collaboration helps Amazon fulfill orders with unmatched accuracy. Since we began working with robotics, we've added over a million new jobs worldwide.Working in symphony with our robotic technology, employees have the opportunity to extend their technical capabilities by working alongside some of the industry’s most advanced technologies. This includes our fleet of autonomous mobile robots, sophisticated control software, and technologies like language perception, machine learning, object recognition, and semantic understanding of commands. These technologies help employees deliver an ever-improving customer and employee experience, as well as improve the safety of our facilities. Explore opportunities across the entire Fulfillment Technologies & Robotics team to find the right fit for you.
- Series C
- 18k employees
- Founded 2003
2
Twitch· San Francisco, California, United States
Twitch is where thousands of communities come together for whatever, every day. Together for streamers. Together for games we love. Together for each other.
- Series C
- 14.9k employees
- Founded 2011
3
Hotmart· Amsterdam, North Holland, Netherlands
Impactar desde o dia um. Foi com essa certeza que João Pedro Resende e Mateus Bicalho fundaram a Hotmart em 2011. Nascemos como uma startup mineira e nos tornamos uma empresa global de tecnologia com soluções inovadoras que transformam conteúdos em negócios digitais de sucesso. Somos pioneiros e líderes da Creator Economy (Economia dos Criadores de Conteúdo), possibilitando que milhões de pessoas vivam de suas paixões, transformando sua audiência em clientes, suas habilidades em produtos, e sua influência em negócios. Hoje somos +1.700 Troopers (é assim que chamamos nossos colaboradores e colaboradoras) espalhados pelo Brasil, Espanha, Colômbia, México, Estados Unidos, França e Países Baixos, onde fica localizada a nossa sede. Somos talentos diversos, movidos por encorajar as pessoas a compartilharem seus conhecimentos e ganharem o mundo. E fazemos isso com Liberdade, Autonomia e Love. Já são +200 mil criadores de conteúdo, com vendas registradas em +188 países. Impactar, pra nós, é permitir sonhar, mas também realizar. É ver milhões de vidas serem transformadas. É fazer parte de uma verdadeira revolução no mercado digital, que está só começando. Nós somos a Hotmart. Nosso trabalho impulsiona e fortalece negócios digitais, gerando empregos, disseminando conhecimento e impactando de verdade!
- Series C
- 12.6k employees
- Founded 2011
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4
Mercor· San Francisco, California, United States
We find the best experts in every professional domain and put their knowledge to work training frontier models. Through APEX, we measure whether those models can actually perform economically valuable work. We're also bringing that expertise to enterprises: deploying custom AI agents, staffing teams with vetted domain experts, and helping organizations encode their own knowledge into AI systems.
- Series C
- 8.7k employees
- Founded 2023
5
HighRadius· Houston, Texas, United States
HighRadius provides a single Agentic AI platform for the Office of the CFO. It integrates 180+ agents that orchestrate end-to-end processes across Order-to-Cash, Close & Reconciliation, Consolidation & Reporting, Accounts Payable, B2B Payments, and Treasury. HighRadius guarantees operational KPI improvements by mapping them to specific agents on the platform. With a 3-6 month go-live period, HighRadius drives value creation at 1300+ enterprises such as 3M, Unilever, Bristol-Myers Squibb Company, Red Bull, Lufthansa, and more. HighRadius has been consistently recognized as a market leader by Gartner, IDC, and Forrester.
- Series C
- 4.6k employees
- Founded 2006

6
Clipboard· San Francisco, California, United States
Our Why:At Clipboard, our mission is to uplift as many communities as possible. We do this by connecting healthcare professionals with the workplaces that need amazing workers, helping people achieve financial stability for themselves and their families while providing essential care to people all across the U.S.Our How:Clipboard is an app-based marketplace where workplaces post calls for help and workers answer. Every year, we help hundreds of thousands of workers fill millions of shifts across the U.S. We’re the leader in Long-Term Care staffing and are rapidly expanding into Home Health, Hospitals, and more.Our Team:Founded in 2016, we are a remote-first team of over 1,000 people working to uplift communities across the country.Today, healthcare facilities and schools are understaffed, which can result in poor patient care, student outcomes, and employee burnout. Meanwhile, local professionals have time and want to pick up extra shifts. These two parties don’t know each other and aren’t sure if they can work together (licenses, qualifications, or even trust might get in the way). Clipboard exists to solve this problem.
- Series C
- 4k employees
- Founded 2016
7
Miro· San Francisco, California, United States
Miro is the collaborative workspace where agents and teams converge to think, decide, and build together. As AI accelerates work, the challenge for organizations isn't doing more; it's turning individual output into scaled impact. Serving more than 100 million users across 250,000 customers, Miro’s shared, secure canvas surfaces the context that empowers teams to solve harder problems, make better decisions, and move work forward faster. Founded in 2011, Miro currently employs 1,600 people in 13 hubs around the world.
- Series C
- 2.8k employees
- Founded 2011
8
Guru· Oman
Guru connects, governs, and delivers trusted knowledge everywhere you work. It’s the AI Source of Truth that unifies company data, delivers cited, permission-aware answers, and keeps information accurate automatically.
- Series C
- 2.6k employees
- Founded 2013
9
lala
- Series C
- 2.5k employees
- Founded 2005
10
NinjaOne· Austin, Texas, United States
NinjaOne unifies IT to simplify work for nearly 40,000 customers in 140+ countries. The NinjaOne Unified IT Operations Platform delivers endpoint management, autonomous patching, backup, and remote access in a single console to improve efficiency, increase resilience, and reduce spend. By automating IT and managing all endpoints, organizations give employees a great technology experience at work. NinjaOne is obsessed with customer success and has retained a 98% customer satisfaction score for more than 5 years. NinjaOne is a Leader in the Gartner Magic Quadrant for Endpoint Management tools, a Leader in two IDC MarketScape reports, and a Champion in the Canalys RMM and PSA Leadership Matrix. NinjaOne is #1 in 14 categories in the G2 Winter Report, including autonomous endpoint management, patch management, RMM, and Online Backup. See why we're a leader in the 2026 Gartner Magic Quadrant for Endpoint Management Tools: https://see.ninjaone.com/ujvXA
- Series C
- 2.4k employees
- Founded 2013

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Find engineers and founders at Series C SaaS companies

Series C SaaS companies are some of the most active hirers in the market. The list above ranks the largest SaaS companies whose latest disclosed round is Series C, by current headcount, drawn from public LinkedIn and Crunchbase records. Across 1,166 matching companies, you’ll find senior engineers, founding designers, and operators worth tracking.

Companies at this stage in SaaS share a profile: a working product, fresh capital, and a hiring plan that wants senior people yesterday. Looking at headcount, last round, and HQ side by side gives you a quick read on where SaaS talent is concentrating right now.

Refolk converts this list into a search. Ask for “Series C SaaS founders hiring senior engineers” or “design leads at Series C SaaS companies” and Refolk returns a fresh ranked shortlist with the sources behind each match.

How this list is built

Refolk pulled SaaS companies whose latest disclosed funding round is Series C from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 5 employees. The list refreshes once a day.

Last refreshed: Wed, 05 Aug 2026 12:57:03 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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