# Top 22 Engineering Startups Founded in 2021 by Funding (2026)

> The 22 best-funded engineering startups founded in 2021, ranked by total funding raised: $1.8B combined.

Source: https://millionrounds.com/top-lists/engineering-startups-founded-2021 (Millionrounds; every figure on the page links to its filing or article)

- 1 [**Gren** GREN is a clothing company that minimizes and recycles waste, invests in renewable energy, and offsets unavoidable emissions.](https://millionrounds.com/company/gren) GREN is a clothing company that minimizes and recycles waste, invests in renewable energy, and offsets unavoidable emissions. *Founded* 2021 Tartu, Estonia **$1.3B** last round May 2026
- 2 [**Colossal Biosciences** Colossal Biosciences is an American biotechnology and genetic engineering company founded in September 2021, recognized as the world's first dedicated de-extinc](https://millionrounds.com/company/colossal-biosciences) Colossal Biosciences is an American biotechnology and genetic engineering company founded in September 2021, recognized as the world's first dedicated de-extinc *Founded* 2021 Dallas, United States **$380M** last round Feb 2026
- 3 [**Mach9** Mach9 is building the fastest geospatial production platform for engineering and construction firms globally, starting with Digital Surveyor](https://millionrounds.com/company/mach9) Mach9 is building the fastest geospatial production platform for engineering and construction firms globally, starting with Digital Surveyor *Founded* 2021 Pittsburgh, United States **$46M** last round Oct 2026
- 4 [**Frontieras North America** Frontieras North America is an energy and environmental technology company that specializes in its patented FASFormTM Solid Carbon Fractionation technology.](https://millionrounds.com/company/frontieras-north-america) Frontieras North America is an energy and environmental technology company that specializes in its patented FASFormTM Solid Carbon Fractionation technology. *Founded* 2021 Houston, United States **$26M** last round Apr 2026
- 5 [**Quanscient** Quanscient is a Finnish technology company based in Tampere, founded in 2021.](https://millionrounds.com/company/quanscient) Quanscient is a Finnish technology company based in Tampere, founded in 2021. *Founded* 2021 Tampere, Finland **$17M** last round May 2026
- 6 [**Imperagen** Imperagen is a Techbio company founded in 2021, based in Manchester, UK.](https://millionrounds.com/company/imperagen) Imperagen is a Techbio company founded in 2021, based in Manchester, UK. *Founded* 2021 Manchester, United Kingdom **$11M** last round May 2026
- 7 [**Carbon Alpha** Carbon Alpha develops custom solutions for carbon capture and storage, aiding companies in reducing carbon emissions.](https://millionrounds.com/company/carbon-alpha) Carbon Alpha develops custom solutions for carbon capture and storage, aiding companies in reducing carbon emissions. *Founded* 2021 Calgary, Canada **$7.2M** last round Apr 2026
- 8 [**Krush** KRUSH is a sustainable, revolutionary oral care range.](https://millionrounds.com/company/krush) KRUSH is a sustainable, revolutionary oral care range. *Founded* 2021 Glasgow, United States **$6.5M** last round Jan 2012
- 9 [**Riverse** Riverse enables efficient and transparent carboncredit markets in Europe.](https://millionrounds.com/company/riverse) Riverse enables efficient and transparent carboncredit markets in Europe. *Founded* 2021 Lyon, France **$5.6M** last round May 2025
- 10 [**Sproutling** Sproutling is a consumer electronics company based in San Francisco, California.](https://millionrounds.com/company/sproutling) Sproutling is a consumer electronics company based in San Francisco, California. *Founded* 2021 Duesseldorf, United States **$5.2M** last round Sept 2013
- 11 [**Funga** Funga uses the forest fungal microbiome to improve forestry outcomes and address the climate crisis.](https://millionrounds.com/company/funga) Funga uses the forest fungal microbiome to improve forestry outcomes and address the climate crisis. *Founded* 2021 Austin, United States **$5.1M** last round Dec 2024
- 12 [**CalcTree** CalcTree is a Sydney-based startup focused on ConstructionTech, offering cloud-native engineering calculation management software.](https://millionrounds.com/company/calctree) CalcTree is a Sydney-based startup focused on ConstructionTech, offering cloud-native engineering calculation management software. *Founded* 2021 Sydney, Australia **$3.8M** last round May 2025
- 13 [**dClimate** dClimate is a decentralized marketplace and climate data infrastructure network that standardizes, monetizes, and distributes climate data, forecasts, and models.](https://millionrounds.com/company/dclimate) dClimate is a decentralized marketplace and climate data infrastructure network that standardizes, monetizes, and distributes climate data, forecasts, and models. *Founded* 2021 New York, United States **$3.5M** last round Apr 2021
- 14 [**PhaseTree** PhaseTree is a deep-tech startup based in Copenhagen, Denmark, focused on the accelerated discovery of sustainable materials for clean energy applications.](https://millionrounds.com/company/phasetree) PhaseTree is a deep-tech startup based in Copenhagen, Denmark, focused on the accelerated discovery of sustainable materials for clean energy applications. *Founded* 2021 Soborg, Denmark **$3.2M** last round Mar 2025
- 15 [**Things** 株式会社Things is a Japan-based company founded in 2021 that focuses on developing a product lifecycle management platform called PRISM.](https://millionrounds.com/company/things) 株式会社Things is a Japan-based company founded in 2021 that focuses on developing a product lifecycle management platform called PRISM. *Founded* 2021 Shibuya City, Japan **$2.2M** last round Jul 2025
- 16 [**Kubik** Kubik is an environmental technology company that uses plastic waste to make low-carbon, durable, and affordable buildings.](https://millionrounds.com/company/kubik) Kubik is an environmental technology company that uses plastic waste to make low-carbon, durable, and affordable buildings. *Founded* 2021 - **$1.9M** last round Apr 2024
- 17 [**INITION ENERGY** INITION ENERGY is a deep-tech cleantech startup founded in 2021 and based at the Harwell Science and Innovation Campus in Didcot, Oxfordshire, UK.](https://millionrounds.com/company/inition-energy) INITION ENERGY is a deep-tech cleantech startup founded in 2021 and based at the Harwell Science and Innovation Campus in Didcot, Oxfordshire, UK. *Founded* 2021 Didcot, United Kingdom **$984K** last round Apr 2026
- 18 [**Bageera** Bageera is a London-based fintech startup founded in 2021 that operates an investment platform focused on natural capital assets.](https://millionrounds.com/company/bageera) Bageera is a London-based fintech startup founded in 2021 that operates an investment platform focused on natural capital assets. *Founded* 2021 London, United Kingdom **$687K** last round Sept 2021
- 19 [**Armory Technologies, Inc.** We make stronger, lighter, and smarter products with our patented technology.](https://millionrounds.com/company/armory-technologies-inc) We make stronger, lighter, and smarter products with our patented technology. *Founded* 2021 Worcester, United States **$600K** last round Sept 2013
- 20 [**Thermolic** Thermolic turns agricultural waste into two premium industrial products: renewable syngas and Thermolic Carbon.](https://millionrounds.com/company/thermolic) Thermolic turns agricultural waste into two premium industrial products: renewable syngas and Thermolic Carbon. *Founded* 2021 Denver, United States **$500K** last round Sept 2026
- 21 [**Fourier Audio** Fourier Audio is a live audio processing company.](https://millionrounds.com/company/fourier-audio) Fourier Audio is a live audio processing company. *Founded* 2021 London, United Kingdom **$326K** last round Jul 2022
- 22 [**Resting Reef** Resting Reef is an environmental firm that designs and develops urns to regenerate marine biodiversity and filter water.](https://millionrounds.com/company/resting-reef) Resting Reef is an environmental firm that designs and develops urns to regenerate marine biodiversity and filter water. *Founded* 2021 London, United Kingdom **$157K** last round Jul 2026

**Total funding** how the list is ranked

**15 November 2026** updated nightly

**Rounds we track** source: Millionrounds

Companies founded in 2021 whose funding rounds we classed in this sector, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.

## Who backed them?

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## More engineering lists

[See all](https://millionrounds.com/top-lists?t=Engineering)

[*C* *PR* *P* **Engineering startups in the United States** 109 companies · $10B](https://millionrounds.com/top-lists/engineering-startups-united-states)[*C* *PR* *G* **Engineering startups that raised in 2026** 51 companies · $9.2B in 2026](https://millionrounds.com/top-lists/engineering-startups-raised-2026)[*RG* *P* *IE* **Engineering startups in the United Kingdom** 44 companies · $1.6B](https://millionrounds.com/top-lists/engineering-startups-united-kingdom)[*S* *2E* *O* **Engineering startups founded in 2018** 19 companies · $364M](https://millionrounds.com/top-lists/engineering-startups-founded-2018)[*G* *A* *V* **Engineering startups in France** 15 companies · $185M](https://millionrounds.com/top-lists/engineering-startups-france)[*R* *G* *D* **Engineering startups founded in 2020** 15 companies · $238M](https://millionrounds.com/top-lists/engineering-startups-founded-2020)[*C* *P* *RP* **Engineering startups in San Francisco** 13 companies · $4.7B](https://millionrounds.com/top-lists/engineering-startups-san-francisco)[*P* *C* *FE* **Engineering startups founded in 2023** 13 companies · $1.8B](https://millionrounds.com/top-lists/engineering-startups-founded-2023)

## More lists worldwide

[See all](https://millionrounds.com/top-lists?r=Global)

[*GV* *V* *RP* **Health startups worldwide** 12,811 companies · $81B](https://millionrounds.com/top-lists/health-startups)[*O* *A* *X* **AI startups worldwide** 10,238 companies · $830B](https://millionrounds.com/top-lists/ai-startups)[*GV* *V* *RP* **Biotech startups worldwide** 7,127 companies · $70B](https://millionrounds.com/top-lists/biotech-startups)[*D* *B* *FT* **Big data startups worldwide** 3,812 companies · $220B](https://millionrounds.com/top-lists/big-data-startups)[*AF* *R* *S* **Fintech startups worldwide** 3,200 companies · $94B](https://millionrounds.com/top-lists/fintech-startups)[*O* *A* *B* **AI startups that raised in 2026** 2,922 companies · $540B in 2026](https://millionrounds.com/top-lists/ai-startups-raised-2026)[*FT* *CE* *P* **Energy providers startups worldwide** 2,808 companies · $152B](https://millionrounds.com/top-lists/energy-providers-startups)[*A* *P* *O* **Marketing tech startups worldwide** 2,728 companies · $28B](https://millionrounds.com/top-lists/marketing-tech-startups)