In this article, we have highlighted the startups that secured capital in September 2025, some of which are currently expanding their teams.
Amsterdam’s startup ecosystem continues to attract substantial investment in September 2025, reinforcing the city’s position as one of the leading European hubs for innovation.
Home to around 1,219 startups—nearly 45 per cent of the Netherlands’ total—the city remains central to the growth of the Dutch tech sector.
Although Amsterdam experienced a slight drop in the 2025 Global Startup Ecosystem Index, it continues to attract both talent and capital, ranking 26th worldwide and leading nationally in areas such as fintech. As per Dealroom, in 2025, Dutch startups have raised nearly $926M in funding from 126 rounds.
In September 2025, Amsterdam-based companies such as Actuals.io, Sympower, and Avantium secured funding and announced hiring plans, reflecting ongoing activity in the city’s startup ecosystem. In this article, we have highlighted those startups. Check them out below!
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Note: Certain details of these startups, such as founders’ names and the funding amount, have been sourced from Dealroom.
Actuals
Founders: Peter Engel, Stefan de Kraker, Peter Lem
Funds raised: €3M in Series A round
Hiring: Yes, apply here
Actuals.io is a tech company that offers a software platform designed to automate transaction reconciliation for businesses with high transaction volumes. The platform integrates order, payment, settlement, and accounting data to create a unified financial record, reducing the need for manual reconciliation processes.
Insify
Founder: Koen Thijssen
Funds raised: €16.3M in a Series B round
Hiring: Yes, apply here
Insify aims to transform business insurance by making it simpler, faster, and more affordable for entrepreneurs and SMEs.
The company has developed an intuitive end-to-end digital insurance platform designed specifically for Europe’s entrepreneurs and SMEs. The platform allows SMEs to receive a business insurance quote in two minutes rather than weeks or months. Policies are refreshed regularly through automated checks and underwriting, evolving as SMEs scale.
Brineworks
Founders: Gudfinnur Sveinsson, Dr. Joseph Perryman,
Funds raised: €5M in new funding and another €2M in the same month
Hiring: Yes, apply here
Brineworks has developed electrolysis technology that enables sustainable and affordable extraction of CO2 from the atmosphere while coproducing H2. The company aims to build a scalable solution to decarbonise hard-to-abate sectors like aviation and maritime.
PromptWatch
Founders: Gijs de Groot, Klaas Foppen
Funds raised: €1.2M in seed funding
Hiring: Yes, looking for a full-stack developer. Apply here
Promptwatch is a Generative Engine Optimisation (GEO) and AI visibility platform. GEO is the practice of optimising content and brand presence for AI-powered search engines and conversational AI platforms.
The platform monitors, analyses, and optimises a brand’s presence in AI-generated search results and conversations across platforms like ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews. Promptwatch provides real-time monitoring of brand mentions, identifies content gaps, analyses prompt performance, and offers optimisation recommendations.
Caeli
Founder: Martin Smit
Funds raised: Undisclosed
Hiring: Currently not hiring
Caeli uses satellite data and technology to address climate change and air pollution. The company tracks air quality and greenhouse gas emissions, supplying data that governments, companies, and organisations can use to manage environmental impact, evaluate health risks, and comply with regulations.
Caeli’s work supports global efforts to reduce emissions, improve air quality, and manage natural resources. The company applies its technology across multiple sectors, including agriculture, urban development, and environmental monitoring.
Naq
Founders: Nadia Kadhim, Chris Clinton
Funds raised: €6M in Series A round
Hiring: Currently not hiring
Amsterdam and London-based Naq is an automated healthcare compliance platform that automates over 80 per cent of compliance tasks. This simplifies the process of achieving, monitoring, and managing digital health compliance, allowing innovators to bring their solutions to market more quickly.
PAIX Data Centres
CEO: Hemen Shah
Funds raised: $4M in Series B round
Hiring: Yes, apply here
PAIX Data Centres is a company that provides colocation services—meaning it allows businesses to place their servers and IT equipment in PAIX’s facilities rather than maintaining their own data centres.
The company is Pan-African, operating across multiple countries in Africa. Its services are cloud- and carrier-neutral, which means customers are not restricted to a specific cloud provider or telecom carrier.
Sympower
Founders: Simon Bushell, Georg Rute
Funds raised: €19M in funding
Hiring: Yes, apply here
Sympower provides energy flexibility services to help balance electricity grids. Using its software platform, it manages electricity supply and demand across networks.
The company enables businesses, grid operators, and energy stakeholders to generate revenue, reduce costs, and integrate renewable energy.
Sympower serves energy-intensive industries such as paper, greenhouses, data centres, and wood mills by optimising the flexibility of electrical assets and processes.
Avantium
Founders: Claude Stoufs
Funds raised: €84.8M and €65M through a fully committed and underwritten rights offering
Hiring: Yes, apply here
Avantium is a commercial-stage company specialising in renewable and circular polymer materials. It develops and commercialises technologies to produce materials from sustainable carbon feedstocks, such as biomass and CO2. It’s leading YXY Technology converts plant-based sugars into FDCA (furandicarboxylic acid), the key component of the sustainable plastic PEF.
Factris
Founders: Brice Laurent, Marcel Meijer
Funds raised: €100M funding facility
Hiring: Currently not hiring
Factris is a fintech company that provides invoice financing solutions to SMEs. It operates in several European countries and combines technology with customer support to provide financing for growing businesses.
Factris operates through several key components. Its technology includes the FAB (Finance Automation for Business) platform and an AI-powered risk management system, with plans to develop additional financing tools.
Asperitas
Founders: Rolf Brink, Markus Mandemaker
Funds raised: Undisclosed
Hiring: Currently not hiring
Asperitas is a provider of thermal management solutions focused on making efficient use of energy for computation.
The company provides immersion-cooling systems and modular integrations for both core and edge data centres, improving Power Usage Effectiveness (PUE), Water Usage Effectiveness (WUE), and Environmental Resource Factor (ERF), allowing for more available power for IT.
The company aims to help customers sustainably grow their digital infrastructure with effective thermal management solutions, including immersion cooling.
Treasury
Founders: Khing Oei
Funds raised: Launched with initial funding of €126M
Hiring: Currently not hiring
Treasury is a euro-denominated Bitcoin treasury company building a transparent, institutional-grade structure for Bitcoin exposure in Europe. The company focuses on systematic Bitcoin accumulation and generating yield through equity and debt strategies.
Treasury plans to list on Euronext Amsterdam via a reverse listing and promotes wider Bitcoin adoption across the Netherlands and Europe.
Clear.bio
Founders: Madelon Bracke, Piet Hein van Dam
Funds raised: €1.7M in fresh funding
Hiring: Currently not hiring
Clear.bio has developed a digital self-help tool that helps users to put together a fully personalised diet and to follow it in their day-to-day lives. The company collaborates with healthcare professionals, investors, academic institutions and insurers to make personalised care widely accessible.
Recently, Clear.bio announced two new features — Smart Swap and Smart Signal. These features deliver real-time, personalised advice at scale – based on each user’s individual glucose data.
