# Weeefiner: Machinery, Jyvaeskylae, Finland

> Weeefiner: Weeefiner, founded in 2017 and based in Jyväskylä, Finland, is a greentech and cleantech company specializing in innovative water treatment and...

Source: https://millionrounds.com/startup/weeefiner (Millionrounds; every figure on the page links to its filing or article)

Finland · [Machinery startup](https://millionrounds.com/companies)

# Weeefiner

Weeefiner, founded in 2017 and based in Jyväskylä, Finland, is a greentech and cleantech company specializing in innovative water treatment and material recovery solutions.

Email

Funding reported Last round: Seed

Machinery Jyvaeskylae, Finland

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Company summary

- **Founded:** - not reported
- **Team:** 19 11 to 50 people
- **Funding reported:** 550k as listed, currency not stated
- **Last round:** Seed Oct 2025

How sure we are

- ✓ **Listed** We know it exists and what it does
- 2 **Funding reported** A company dataset reports a raise
- 3 **Observed** A filing or a dated announcement confirms a round

No round for Weeefiner has been confirmed by a filing or an announcement yet, so nothing here counts toward an investor's record. [How we decide](https://millionrounds.com/methodology)

## About Weeefiner

Weeefiner, founded in 2017 and based in Jyväskylä, Finland, is a greentech and cleantech company specializing in innovative water treatment and material recovery solutions.

The company focuses on extracting dissolved metals and nutrients from industrial wastewater and mining effluents, promoting the circular use of raw materials. Their proprietary technology, the 4D Scavenger®, utilizes 3D-printed, chemically porous filters to selectively recover valuable materials from water streams. Weeefiner offers a range of products and services, including 4D Scavenger® filters, modular material recovery systems, and sustainable water treatment solutions. They serve energy and water-intensive industries such as mining, metal processing, chemicals, energy, and electronics recycling. The company aims to reduce costs for industries while minimizing environmental impact and enhancing material efficiency. With a growing team and recent funding to support their development, Weeefiner is positioned to lead in the recovery of dissolved materials by 2030.

## What company datasets say Weeefiner raised

Funding, as reported

Reported in all **550k** in the source's currency

Last round **Seed**

Last round size **550k**

Last round date **Oct 2025**

## Founders and team

From Weeefiner's own website: 14 on the team.

- **Mikko Hänninen** Chief Executive Officer
- **Elmeri Lahtinen** Chief Technology Officer
- **Mirja Yli-Erkkilä** Chief Sales Officer
- **Paula Timonen** Chief Financial Officer
- **Ari Stjerna** Sales Manager
- **Ari Väisänen** Board member
- **Janne Frimodig** Operations Manager
- **Jari Rautjärvi** Chairman of the Board
- **Jenna Taskinen** R&D Manager
- **Jukka-Pekka Nikula** Board member
- **Peter Malmström** Board member
- **Roope Pietilä** Board member
- **Sanna Lindeman** Communications and Administration Manager
- **Timo Galkin** Business Director

## On a portfolio page

Investors who name them

- [Midinvest](https://millionrounds.com/fund/midinvest)

Each firm lists Weeefiner on its own website. That is the firm's claim, a weaker thing than a round we watched, but a named source.

## The company, in detail

What they build

Known for

water reuse dissolved metal recovery 4d scavenger skid distribution manufacturing remote operation sustainable water solutions water treatment technology recovery of rare earth elements water treatment collaboration material recovery secondary resources process development low metal concentration water treatment industrial water challenges resource efficiency

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- **Sector:** Machinery
- **Industry code:** NAICS 33331, 541620, 541715, SIC 3829
- **Region:** Central Finland
- **Full record:** [Every detail in the company directory](https://millionrounds.com/directory/weefiner)

## Machinery in Finland

Startups like it

- [**Tamturbo** Tampere · founded 2010](https://millionrounds.com/startup/tamturbo)
- [**Savcor** Mikkeli · founded 1981](https://millionrounds.com/startup/savcor)
- [**SpinDrive** Lappeenranta · founded 2015](https://millionrounds.com/startup/spindrive)
- [**Savroc** Kuopio · founded 2013](https://millionrounds.com/startup/savroc)
- [**Mekitec** Oulu · founded 2005](https://millionrounds.com/startup/mekitec)
- [**Sofi Filtration** Lappeenranta · founded 2011](https://millionrounds.com/startup/sofi-filtration)
- [**Teraloop Oy** Helsinki · founded 2014](https://millionrounds.com/startup/teraloop-oy)
- [**Helmee Imaging Ltd** Tampere · founded 2013](https://millionrounds.com/startup/helmee-imaging-ltd)

## Is this your company?

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