Lead Engineer, Cozero
+ Virtual Stock Options
Carbon accounting and climate management solution
Be an early applicant
Carbon accounting and climate management solution
21-100 employees
Be an early applicant
+ Virtual Stock Options
21-100 employees
Company mission
To enable companies to effectively decarbonize and transform their business sustainably in light of financial implications.
Role
Who you are
- Bring 8+ years of experience in software engineering with 2+ years owning a product domain end-to-end
- Have experience with data-intensive backend systems in B2B SaaS
- Are a strong backend engineer fluent in TypeScript/Node.js - experienced with NestJS or similar frameworks, solid with PostgreSQL, comfortable navigating a React frontend when needed
- Have owned a product domain before - not just implemented features, but made the architectural calls and been the person who knew how the whole thing worked
- Care deeply about data correctness - you've built systems where wrong output is worse than no output, and you think naturally about validation and edge cases
- Ship small and often - you're uncomfortable when PRs sit for days and you treat "in production" as the only definition of done
- Have a DevOps mindset - you own your components from technical design to release, monitoring, and maintainability
- Debug across layers - when something's wrong, you trace it end-to-end rather than pointing at someone else's service
- Write clear technical documents that other engineers actually use
- Familiarity with AWS (ECS, Lambda, SQS, Aurora)
Desirable
- Experience with data ingestion pipelines, ETL systems, or analytics tooling (Cube.js, Snowflake)
- Experience stabilizing or rewriting legacy systems incrementally
- Climate tech, sustainability, or compliance-grade data systems
- Series A/B startup experience
What the job involves
- We’re building the carbon accounting platform that enterprises use for compliance reporting and decarbonization strategy
- Our platform processes millions of data points to calculate auditable CO2 emissions and we need technical leaders who can own entire product domains
- We are looking for a Lead Engineer to take end-to-end ownership of a core product domain in our carbon accounting platform
- You’ll be the technical authority for their area: making architecture calls, shipping features in tight cycles, and being the one who keeps their domain reliable
- This is a hands-on role - you write code daily, lead by shipping, and own your systems from design to production
- If you want to own a core part of a climate tech platform and see your work directly impact how companies measure and reduce emissions, keep reading
- Own a product domain end-to-end - architecture decisions, feature delivery, reliability, and operational health for your area of the platform
- Ship features in 2-3 day cycles - break down projects into small deliverables, write tech docs, and drive them to production
- Design and build data validation and processing capabilities - ensuring customers can trust the numbers they see
- Lead technical discovery for your projects - implementation approach, testing strategy, rollout plan, risks - reviewed by peers before development starts
- Own what you build through production - deployment, monitoring, and incident response
Our take
Conflicts in the 2020s and climate change are challenging energy companies, leading to an unprecedented demand for more commitment to renewable raw materials from all stakeholders. For companies, this means it is now no longer a luxury to save CO2 emissions where possible.
Cozero is a software company that creates products to fit that need. The startup was founded to enable companies to effectively decarbonise and it differentiates itself from competitors by framing these CO2 savings in the language of business - each measure details CO2 saved per Euro invested.
With over 70 enterprise customers, the company's next steps will involve accelerating its international expansion and advance its Climate ERP solution. Having already helped cut Vodafone's media carbon footprint by a third, the company is well set for even greater success as it continues to grow.
Freddie
Company Specialist at Welcome to the Jungle
Insights
Company
Funding (1 round)
Apr 2024
$7.7m
SERIES A
Total funding: $7.7m
Company benefits
- VSOP: As a valued team member, you'll have the opportunity to join our VSOP pool, allowing you to share in the company's financial success
- 27 days of vacation: We offer 27 days of paid time off on top of national holidays, no matter where you are based
- Flexible working hours: Trust is the backbone of our culture, so you have the autonomy to set your own work hours. We recognize that work-life balance varies for each individual, so you are encouraged to adjust your schedule to suit your personal needs, whether that's spending time with family or focusing on your health and well-being
- Learning budget: You will have a budget of EUR 500 per year to allocate towards any learning and development activities of your choice. You have the freedom to select whatever you believe is best for your growth
- Work from home budget: You will receive a one-off payment of EUR 500 to purchase any equipment you need for your remote office. We provide you with a Mac
- Work from anywhere: We fully embrace remote work and its flexibility. However, we must adhere to the tax regulations specific to each country
- In-person Gatherings: There's nothing like in-person connections to boost team spirit. That's why we organize two types of gatherings: company-wide events twice a year and team-focused meetups twice a year
Company HQ
Prenzlauer Berg, Berlin, Germany
Leadership
Fabian Schwarzer
(Co-Founder & COO)Previously a Senior Consultant at Roland Berger.
Helen Tacke
(Co-Founder & CEO)Preciously a Partner at a family office investment fund. Also previously Co-founded VEECEE, a networking platform for Venture Capitalists.
Tiago Taveira
(Co-Founder & CTO)8+ years experience as a Full-Stack Developer and Product Manager prior starting Cozero.
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