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Offstream

Offstream logo

Offstream

Vanta for carbon compliance

useoffstream.com
1-10
B2B

Company research

Public company, workplace, funding, and market signals

Updated Jul 30, 2026

Overview

Offstream is a Denver-based climate data and analytics startup that helps carbon removal and other clean-tech project developers design, certify, and continuously monitor projects so they can reach verified credits and revenue faster.

Primary product

End-to-end carbon compliance and certification platform

Founded

2023

Headquarters

1550 Wewatta St, Floor 2, Denver, Colorado, United States

Team size

10-20

Work style

Hybrid

Industry

Climate Data and Analytics

Sub-industry

Carbon compliance automation / carbon removal certification software

Offices

Denver, Colorado, United States
San Francisco, California, United States

Business model

B2B SaaS subscription
Managed services
Expert certification support

Funding

Stage

pre-seed / seed

Total raised

$500K

Latest round

Seed · Nov 2024

Seed

Nov 2024

Pre-Seed

Sep 2024 · Y Combinator

$500K

People & investors

Leadership

Varsha Ramesh Walsh

CEO and Co-Founder

Zach Janicki

CTO and Co-Founder

Will Baach

Customer Success Lead

Julia Campbell

Customer Success Lead

Investors

Collab Fund
Cool Climate Collective
FundersClub
Mission One Capital
Y Combinator

Work & culture

Lean, mission-driven, high-ownership team with strong emphasis on speed, accuracy, customer focus, and operational simplicity. Public materials also suggest a very hands-on, expert-heavy, customer-responsive culture.

Work style

Hybrid

Compensation

Publicly advertised compensation signals are competitive salary plus equity, with a full benefits package and generous PTO; no public banded salary ranges were found.

Benefits

Competitive salary
Equity
Unlimited PTO
Minimum 2 weeks off per year
All federal holidays
Company shutdown between Christmas and New Year’s
Full suite of benefits

Product & market

Pricing

Fixed-cost monthly subscription for software plus expert services, with add-on fees for additional sites and no carbon-credit revenue share.

Differentiators

  • —Integrated LCA, certification, and dMRV in one stack
  • —Registry-ready documentation and submission support
  • —Managed MRV / service layer rather than software-only
  • —Registry-agnostic approach
  • —Transparent pricing
  • —No credit brokerage or revenue share
  • —Supports multiple CDR pathways and major standards
  • —Fast path to verified credits and revenue

Technology

mrv
typescript
asana
graphql
figma
postgresql
react
github
c
impact
slack
sprint
sphera
zoom

Customers

Carbon removal project developers
Biochar developers
BiCRS developers
BECCS developers
Direct air capture developers
Ground Up
CarbonZero.ECO
Terraton
Mandulis Energy

Competitors

Carbon Pilot
Mangrove Systems
software-only carbon compliance platforms
traditional carbon consultants

Scale & contact

Estimated revenue

approximately $440K-$600K ARR

Estimated monthly visits

816

Traffic estimate as of Jun 2026

hello@useoffstream.com

Latest news

Offstream is now a certified Rainbow Standard Partner

Offstream LinkedIn · Jul 2026

Offstream announced it became a certified Rainbow Standard Partner, extending its end-to-end certification and managed dMRV offering for carbon removal projects.

Cold Steppe built and commissioned a commercial-scale biochar facility in just 169 days

Offstream LinkedIn · May 2026

Offstream highlighted Cold Steppe’s rapid buildout in Arkansas and said it is implementing dMRV for upcoming carbon credit issuance.

Cocoa pod husks, AI, and carbon credit MRV

Offstream LinkedIn · Apr 2026

Offstream described an SF Climate Week event with Terraton and Dandelion Chocolate focused on biochar operations, MRV, and carbon markets.

This SF Climate Week we're co-hosting with Terraton and Dandelion Chocolate

Offstream LinkedIn · Apr 2026

Offstream announced a Climate Week event with Terraton and Dandelion Chocolate and said it had been supporting Terraton on certification and dMRV for more than eight months.

Offstream Launches - Streamlined Carbon Compliance for Project Developers

Fondo · Feb 2026

Fondo covered Offstream’s launch as a carbon compliance platform founded by Varsha Ramesh Walsh and Zach Janicki that combines software with expert guidance for certification workflows.

About usCareersCDR pathwaysContactHomepageLinkedIn companyNotion docsProductResources / blogY Combinator company page
SourcesOfficial homepageAbout usCareersProductContactResources / blogCDR pathwaysLinkedIn companyY Combinator company pageY Combinator launch postFondo launch articleBiochar Today profile

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