Cozero Tech Stack

Carbon accounting platform for corporate emissions tracking and reporting

Software Development Berlin 11–50 employees Founded 2020 Public Company

Cozero built a carbon management platform for mid-market companies to consolidate emissions data and execute decarbonization strategies. The tech stack (React + NestJS + PostgreSQL on AWS) is lean and purposeful, but active projects reveal scaling pressure: they're simultaneously building micro-service architecture, data pipelines, real-time processing, and AI integrations—while pain points explicitly flag data-volume and pipeline-latency challenges. The hiring mix (senior engineers + product + marketing) and accelerating velocity suggest they're transitioning from product-market fit to infrastructure maturity.

Tech Stack 13 technologies

Core StackReact Redux NestJS PostgreSQL TypeScript Node.js AWS AWS Lambda AWS ECS AWS SQS Aurora

What Cozero Is Building

◆Challenges

Decarbonizing while growing business
Ensuring audit-readiness
Meeting reporting standards
Upscaling application for large data volumes
Developing data pipelines for real-time processing
Integrating ai solutions with data team
Reducing carbon emissions at scale
Maintaining marketing continuity during maternity leave
Ensuring marketing performance during product development
Scaling data processing

▲Active Projects

Micro-service architecture improvement
Data pipelines and warehousing setup
Ai integration with data team
Product launches and feature communications
Go-to-market execution for existing products
Design and build data validation and processing capabilities

Hiring Activity

Accelerating6 roles · 3 in 30d

Department

Engineering

Marketing

Product

Seniority

Senior

Intern

Notable leadership hires: Marketing Lead

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About Cozero

Cozero is a German software company founded in 2020 that provides a digital Climate Action Platform (CAP) for enterprise carbon emissions management. The product unifies Scope 1, 2, and 3 emissions tracking, replacing manual spreadsheet-based workflows with a centralized data system. They serve business leaders and sustainability teams at mid-market enterprises navigating regulatory reporting (GHG reporting standards) and decarbonization roadmaps. The company is 11–50 people based in Berlin and is legally structured as a public company.

HeadquartersBerlin

Company Size11–50 employees

Founded2020

Hiring MarketsGermany

Frequently Asked Questions

What tech stack does Cozero use?

Cozero's platform is built on React and Redux (frontend), NestJS and Node.js (backend), PostgreSQL (database), and AWS infrastructure (ECS, Lambda, SQS, Aurora). The stack is modern, cloud-native, and optimized for multi-tenant SaaS.

What is Cozero currently building?

Active projects include micro-service architecture overhaul, data pipelines and warehousing, AI integration with the data team, real-time emissions processing capabilities, and go-to-market execution for new product launches.