Translates changing electricity-market rules and business processes into system requirements, defines data and calculation logic, reviews technical specifications, and advances internal DX with AI coding tools.
Bluefield Energy
Energy Technology · Power Aggregation · Renewable Energy Software · Minato, Tokyo
Bluefield Energy is a Japanese energy-technology company serving electricity retailers and owners and developers of solar and battery assets. It aggregates distributed solar and storage resources, supports renewable plants and battery projects from development through outsourced operation, and provides BF Cloud for customer management and corporate-PPA billing.
The company earns revenue from software contracts and fees for aggregation, development support and operations. In August 2026, it partnered with PORT and Fluence Energy Japan to combine AI-based optimization with market trading and operation of grid-connected batteries, securing an operating contract for PORT’s first high-voltage storage project.
- Salary range
- ¥4.5M – ¥20M
- Median
- ¥7M – ¥15M
- Remote or hybrid
- 88%
- Most requested
- JavaScript 6
- TypeScript 6
- Azure 5
- SQL 5
- C# 4
- React 4
- JLPT N2 2
- Japanese posting, level unstated 14
- Common areas
- Backend engineering 4
- Frontend engineering 4
- Business development 3
- Consulting & strategy 2
Measured from the 16 listings Ranked has live for Bluefield Energy. Japanese level, visa signal and skills are AI-graded from each posting and can be wrong — confirm against the employer's original posting before applying.
16
open positions at Bluefield Energy
2
Plan and improve product and operational foundations for digital solutions or energy aggregation. Structure workflows, define requirements, create PRDs, and direct development with engineers and stakeholders.
Translates changing electricity-market rules into system specifications, defines data and calculation logic, reviews technical diagrams, and builds mockups with AI coding tools.
Leads development teams across aggregation and digital-solutions businesses, improving delivery, quality and technical direction while aligning roadmaps, engineering capacity and team growth.
Leads DX consulting for major corporate clients, from needs interviews and requirements definition through project design, system delivery, and BF Cloud improvement.
Lead renewable-energy business development with utilities, power producers and financial institutions, covering strategy, proposals, deal closing, operations and team management.
Lead architecture, implementation, reviews, and technical standards for a multi-customer energy SaaS product using C#, React, TypeScript, and Azure, while guiding technical decisions and team management.
Develop and operate Bluefield Cloud and related services, handling feature delivery, performance and scalability improvements, Azure operations, automation, and technical debt reduction.
Own reliability for solar-power forecasting and JEPX bidding systems, building AI Agent harnesses, quality gates, and incident-response processes. Collaborate with a small research team on GCP infrastructure and operational decisions.
Leads Azure infrastructure design and operations for an energy-resource platform, improving reliability, security, monitoring, CI/CD, and incident-response foundations in collaboration with development teams.
Develop aggregation schemes for grid-scale storage supporting renewable energy. Plan sales strategy, build partnerships, prepare proposals, negotiate, close deals, and drive operations.
Manage daily supply-demand operations for grid-scale batteries and solar assets, monitor AI plans, handle exceptions, and support procurement, reporting, and revenue optimization.
Work with professionals across engineering, business planning, design, and corporate functions on energy and technology projects. At least three weekdays and four hours per day are required.
Implement and validate Python algorithms for solar and electricity-market forecasting, battery bidding optimization, and backtesting, using Claude Code or Codex. Remote work is available.
Lead QA for an energy technology platform by planning and executing feature, integration, non-functional, and automated E2E tests, and improving quality processes with a scrum team.
Develop generation, demand, and electricity-price forecasting models, optimize trading plans for storage sites, and deploy and improve algorithms in production with AI Agents.