ABOUT UNRAVEL CARBON
Unravel Carbon is an enterprise software that helps companies track and reduce their carbon emissions, focusing on Asia, based in Singapore.
It is the first AI-powered decarbonization platform in Asia that converts any company's accounting data into full supply chain carbon data in seconds, generates climate solutions automatically and auto-populates regulatory disclosure reports.
We aim to accelerate the participation of all companies, big and small, in the global fight against climate change. And we want to do it the 21st century way—autonomous, painless, and beautiful.
Unravel consists of a team of software engineers, data scientists, founders and climate experts with a passion to solve the world's most pressing issue—climate change. Collectively, our leadership team has launched and invested in multiple companies, and are now combining their experience and knowledge here at Unravel.
We are backed by some of the world's best funds and investors such as Y Combinator, Sequoia.
Unravel was founded in Q4/2021 with headquarters in Singapore.
ABOUT THE ROLE
We are hiring a full-stack Software Engineer in Japan to help build Unravel Carbon's product for a growing base of customers across Asia and beyond. This is a hands-on, full-stack engineering role: you will work across the data layer, backend and frontend, lead projects end to end on our product roadmap, solve hard problems across the platform and ship production code.
Japan is one of our key markets. Our customers there include large enterprises, many of them manufacturers, measuring emissions across their full value chain, as well as sustainability consultancies that deliver our platform to their clients. With reporting becoming mandatory and SSBJ disclosures coming in, enterprises need audit-ready numbers rather than estimates. You will bring the perspective of these customers into our engineering team, and help turn local requirements into product capabilities that work for users everywhere.
KEY RESPONSIBILITIES
- Build and ship the product
- Design, build and ship production features across the platform, including our carbon calculation engine, data ingestion pipelines and AI-powered workflows.
- Take ownership of complex problems end to end, from scoping and technical design through to delivery and iteration.
- Develop integrations with customers' accounting and ERP systems.
- Support global users and local requirements
- Take ownership of product localization and internationalization: multi-language support, accurate sustainability terminology, and the details that matter to local users, such as input behaviour and local conventions for presenting data.
- Design flexible ways to support local regulatory and reporting requirements, such as country-specific emission factors, calculation methods and disclosure formats, so that each new market builds on the last.
- Bring the customer's voice into the product
- Join conversations with customers and partners as a technical expert, particularly in Japan, helping to scope new requirements and answer technical questions.
- Translate customer insights into product decisions and well-defined work for the engineering team.
- Work closely with our commercial teams so that customer feedback reaches the product quickly and accurately.
ABOUT YOU
- You are a full-stack engineer and a problem solver at heart, with strong fundamentals and the ability to write, debug and reason about code independently, and you take pride in building software that real users rely on.
- You are product-minded: you care about why something is being built, not only how, and you enjoy learning directly from customers.
- You communicate clearly in both Japanese and English, in writing and in conversation.
- You have a sharp eye for detail. Our customers rely on our numbers for regulatory disclosure, so accuracy matters.
- You see the work of helping companies measure and reduce their emissions as meaningful.
- Required skills:
- Python backend development (Flask, Django). Backend development in other languages/frameworks can be considered too
- Front End Web development (ReactJS)
- SQL and NoSQL databases (Postgres, DuckDB, MongoDB)
- Strong practical programming fundamentals, including common data structures and problem-solving
- Optional skills:
- Experience building data-intensive products
- Experience building with LLMs or agentic workflows
- Integrations with accounting or ERP systems
- Cloud services (AWS, GCP or Azure)
- Familiarity with carbon accounting (GHG Protocol) or sustainability reporting frameworks
YOUR WORK STYLE
- Ownership-oriented: You take projects from idea to production and see them through. In a small team, you step up without being asked.
- Methodical & thorough: You investigate problems systematically, trace data issues back to their root cause, and document your findings clearly.
- Proactive communicator: You surface issues early to customers, to teammates and upwards, rather than waiting for problems to escalate.
- Bridge-builder: You thrive at the intersection of technical and business teams. You translate between engineers who think in APIs and sustainability managers who think in carbon tonnes.
YOUR PREFERRED BACKGROUND
- A Bachelor's degree in Computer Science, Engineering, IT, or equivalent practical experience
- 2+ years of full-stack software engineering experience at a product company, building and maintaining software used by real customers
- A track record of growing scope and responsibility across your roles
- Native or near-native Japanese (reading, writing, speaking). Non-native speakers who have worked directly with Japanese companies in Japanese will also be considered
- Business-level proficiency in English
- Start-up experience is a plus
We welcome candidates across a range of seniority. More important than years of experience is finding the right fit: someone who thrives in a dynamic, fast-paced environment, takes ownership and is excited to grow with us.
WHAT WE OFFER YOU
The opportunity to get in at the early stage of our market expansion and to shape how Unravel Carbon serves customers in Japan and around the world.
We offer an exciting challenge for a purpose-driven person who thoroughly enjoys learning and takes ownership in a multicultural, semi-virtual, and pioneering organisation.
We nurture a culture that allows you to thrive, where your skills can be honed, and your ideas will be heard, and where collaboration across teams and with global partners is the default.
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