Lead Engineer
Supply Chain Intelligence Development | Tracecraft Business
Our Company
sustainacraft, Inc is a startup dedicated to conducting due diligence on nature-based carbon credits, with a mission of promoting the circulation of finance into natural capital.
In September 2024, we launched nature.cocraft, a consortium platform that enables companies working on GX (Green Transformation) to efficiently procure high-integrity international carbon credits from multiple project developers.
In 2025, we launched Tracecraft, an optimal procurement design service for corporate supply chains. This position is a software engineering role for Tracecraft.
Working Environment
Our Working Environment
We operate a hybrid system of in-person and remote work. Those living in the Tokyo area are generally expected to come to the Meguro office about 2–3 days per week. If you live farther away, please feel free to consult with us.
Our Colleagues
Individuals working with us come from diverse backgrounds, including consultants from professional consulting firms and foreign development banks, satellite image analysis specialists at satellite constellation companies, researchers in causal inference, and geographic information visualization specialists. Many of our members hold PhDs in engineering and economics.
Learning Opportunities
Business Development
In our carbon credit–related business, our role is to connect major Japanese companies with trusted carbon-project developers around the world, enabling finance for activities that serve as powerful tools against climate change. To achieve this, we engage in speaking opportunities at high-level climate conferences such as COP, as well as negotiations with government agencies in various countries related to Article 6 of the Paris Agreement. This provides many opportunities to work on an international stage.
For our supply-chain intelligence platform Tracecraft, we are developing services related to the procurement of rare earth metals and conflict minerals; critical resources for EVs, renewable energy, and other industries essential for decarbonisation. These issues are important not only from a decarbonisation perspective but also from the standpoint of economic security. Accordingly, we are advancing service development in collaboration with both the private sector and government agencies.
Technology Development
Our paper, presented in collaboration with the National Institute for Environmental Studies and Hitotsubashi University, won Best Paper at the Climate Change AI Workshop at NeurIPS 2022, a top-level conference on machine learning.
Our strong R&D is a key component of our competitive edge. We also publish a regular Newsletter on approaches and methodologies for forest and soil biomass estimation and project intervention effects.
Job Description
In this position, you will be responsible for all aspects of software engineering related to Tracecraft, our new business venture.
- Design, develop, and operate the supply chain intelligence Tracecraft
- Design and build appropriate data models for conducting causal inference on large-scale supply chain models
- Build an efficient geographic information analysis platform at the global level
- Build and optimize data pipelines
- Design REST/GraphQL APIs and implement client-side solutions
Desired Candidate
- Those who passionately pursue excellence in product development by staying on top of leading-edge technological trends on a daily basis
- Those who are interested in pursuing new consulting service models for the AI era
- Those who routinely utilize generative AI to enhance development efficiency and are also enthusiastic about promoting its appropriate use throughout the company
- Those who can document insights and share them regularly throughout the company
- Those who can resonate with our Credo
Requirements
Essential qualifications
- The ability to move forward while properly balancing development speed with the risk of accumulating technical debt
- End-to-end experience from designing a service through launch and ongoing operations
- Substantial experience in team development and service operations using cloud services (GCP, AWS, etc.) and GitHub
- Proficiency in relational database models, SQL, Python, and TypeScript
- English proficiency (minimum requirement: ability to read English documentation. Communication with our engineering team is primarily in English)
Note: Currently, development using Claude Code or OpenAI Codex is the mainstream approach at our company.
Preferred qualifications
- Experience in manipulating and analyzing geographic information (processing raster/vector data, experience using GDAL, QGIS, ArcGIS, PostGIS, etc.)
- Knowledge of graph theory and experience with graph databases (experience with network analysis using graph databases like Neo4j)
- Experience building AI workflows/agents using tools like Vertex AI, OpenAI Agent Builder, Dify, or n8n
- Experience with competitive programming such as AtCoder (AtCoder blue level or higher)
- Experience visualizing geographic information using JavaScript-based tools (experience using tools like deck.gl)
Compensation & Benefits
- Employment Type: Full-time (6 months probationary period; benefits remain the same during this time)
- Estimated Annual Salary: Approximately JPY 8-15 million + bonus (based on individual and company performance)
- Work Style: Flexible working hours (no core time), hybrid remote and office work style (recommended 2-3 days/week at Meguro office)
- Salary Increase: Once a year (based on individual and company performance)
- Holidays: 2 days off per week, national holidays, paid vacations, year-end and New Year vacations, congratulatory and condolence leave
- Benefits: Health insurance, welfare pension, employment insurance, worker's compensation insurance, transportation expenses fully paid, subsidy for training and books, certification support, health checkups covered
Selection Process
Application screening → Online exam → First interview(s) → Final interview
- Please note that the number of screening processes may increase or decrease
- We welcome applications regardless of whether you are seeking full-time employment or contract-based work