Accelerating the transition to a
net-zero economy
We build software that makes sustainability management simple, rigorous and actionable — so every organisation can measure what matters and act with confidence.
Built by people who've lived the pain of manual ESG reporting
AlchemOS Positive was founded in 2023 by a team of sustainability managers, data engineers and climate scientists who experienced first-hand the frustration of managing ESG data across dozens of spreadsheets, disconnected tools and manual processes.
We set out to build the platform we always wished existed: one that automatically aggregates emission data from all your sources, calculates your footprint with the rigour of the GHG Protocol, generates every disclosure report at the click of a button, and lets you purchase verified offsets — all in one place.
Today, AlchemOS Positive is trusted by sustainability teams across manufacturing, finance, logistics and technology sectors to manage their full carbon lifecycle and meet the demands of CSRD, TCFD, GRI and beyond.
Founded
Company founded; core GHG calculation engine developed.
Private Beta
50 design partners across 6 industries.
Public Launch
Full platform launch with offset marketplace.
Scale
500+ organisations, 2M+ tCO₂e tracked.
Expansion
CSRD module and developer API platform launched.
What we stand for
Scientific rigour
Every emission factor, every calculation methodology and every compliance mapping is peer-reviewed and traceable back to its authoritative source.
Radical transparency
We show our working. Users can inspect every calculation, trace every data point to its source, and export everything. No black boxes.
Climate impact first
We measure our own impact and offset it. We donate 1% of revenue to high-quality climate projects. We refuse work that greenwashes or obstructs climate action.
Customer obsession
We embed sustainability managers in our product team. Every feature ships when real users have validated it solves a real problem.
Security by design
Privacy and security are not features — they are foundations. We follow OWASP, maintain SOC 2 controls, and treat your emissions data as confidential.
Open standards
We build to open standards — GHG Protocol, TCFD, ISO 14064 — and we publish our methodology publicly so you are never locked in.
The people building AlchemOS Positive
Sarah Chen
CEO & Co-founder
Former Head of Sustainability at FTSE 100 manufacturer; MSc Climate Change, UCL.
Marcus Adeyemi
CTO & Co-founder
Ex-Google SWE; built emissions data pipelines for CDP. BSc Computer Science, Imperial.
Priya Nair
CPO
10 years in climate tech product; led CSRD readiness tooling at Big Four.
Tom Keller
Chief Science Officer
Climate scientist; co-authored IPCC AR6 emission factor methodology.
Amara Osei
VP Engineering
Distributed systems specialist; previously at Bloomberg data infrastructure.
Jade Lim
Head of Customer Success
Helped 200+ enterprises through GRI and TCFD disclosure cycles.
Rafael Santos
Head of Partnerships
Former VP at Verra developing carbon market standards.
Annika Berg
Head of Compliance
CSRD and SFDR specialist; ex-EU Commission ESG regulatory advisor.
Join 500+ organisations on the path to net zero
Start measuring your footprint today. No credit card required.