Tech_Senior Backend Engineerの求人

Seeking a seasoned Backend Engineer who can architect scalable, high-performance systems for Japan's energy infrastructure while managing complex domain challenges and contributing to technical leadership across a growing organization. ## Company Overview Since our founding in 2019, we have provided a marketplace for energy providers and have grown to become Japan's largest online trading market, including major power companies. Our GTV (Gross Transaction Value) is approaching 3 trillion yen, and we aim to realize a 100 trillion yen market in annual transaction volume in the future. In 2024, we raised 6 billion yen in Series B funding from domestic and international institutional investors including DCM Ventures and Solos Capital Management, financial institutions, and 9 energy trading businesses including power, gas, and trading companies, and are actively investing in our development team. ## Products 1/ eSquare: Trading Platform Japan's first full-scale trading platform that allows online buying and selling of energy. 2/ eCompass: Market Data Platform A data platform that provides all energy-related data and market information necessary for power trading, such as power prices and fuel price market data. 3/ eScan: Market Risk Management Tool An ETRM (Energy Trading Risk Management System) specialized for Japanese electricity that visualizes business risk amounts from transaction status and market data. 4/ JCEX: Environmental Commodities Exchange A marketplace where domestic environmental commodities and overseas voluntary credits can be bought and sold online, supporting climate change mitigation and the realization of carbon neutrality in Japan. ## Backend Challenges - Domain-driven design and architecture design in anticipation of system scaling - High-level security, availability, and performance for building systems close to national infrastructure - Understanding complex energy domains while communicating with domain experts - Developing a management and people development system for a tech organization of over 50 people ## Job Responsibilities - Design and implementation in microservice development - API development using Go, gRPC - Domain design and code design based on DDD - DB design, load estimation - BFF development using GraphQL / Connect, etc. - Infrastructure construction using GKE/Terraform - Implementation of connections with various external systems - Standardization of modules used across departments - Participation in and proposals for company-wide technical policy discussions

- Resonates with enechain's mission "Building Energy Markets, Coloring Our Society" and can collaborate with a purpose-driven mindset - Can focus on delivering significant results as a team - Can set priorities with the aim of maximizing business impact - Can take ownership and proactively complete projects from start to finish - Can accept different opinions, is not afraid to express different views, and can discuss logically

- Japanese : Business Level - Backend development experience of 5+ years - Service operation experience (incident response, monitoring, etc.)

- GCP/GKE usage experience - Experience implementing authentication/authorization processes (implementation of user login and permission design) - Experience developing with DDD, TDD, and Clean Architecture - Experience using Auth0 and Terraform

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