Join a leading Japanese tech company as a C# Software Engineer, where you'll take ownership of developing and maintaining one of the country's most high-traffic online systems. As a senior contributor and scrum team leader, you'll drive technical design, support junior engineers, and ensure high availability and security of mission-critical applications.
Key Responsibilities
- Design and develop new system features aligned with business requirements
- Refactor and optimize existing code for performance, maintainability, and scalability
- Mentor junior developers and conduct peer reviews and knowledge-sharing sessions
- Troubleshoot technical issues and respond to production support inquiries
- Lead technical discussions and contribute to agile ceremonies
Required Skills and Qualifications
Experience:
- 5+ years of hands-on experience in C# software development
- Strong expertise in WebAPI, MVC.NET, .NET Framework/Core, .NET 6+
- Solid understanding of SOLID principles and RESTful services
- Proficient in front-end basics: HTML, CSS, JavaScript (Vue.js is a plus)
- Skilled with ORM tools like Entity Framework, Dapper, and writing T-SQL for MS SQL Server
- Experienced in web application security, data protection, and system reliability
Soft Skills:
- Strong communication and leadership skills
- Ability to collaborate in cross-functional teams
- Experience mentoring junior developers in a fast-paced environment
Language Requirements
- Japanese: Basic level
- English: Fluent
Preferred Skills & Qualifications
- CI/CD experience using TeamCity, Jenkins, GitHub Actions
- Experience with Docker, Kubernetes, and container orchestration
- Familiarity with microservices and message brokers like Kafka or RabbitMQ
- Experience with MySQL/MariaDB and cloud-based infrastructure
About the Company
This renowned tech company builds and operates a suite of high-performance web-based services. Headquartered in Japan, the firm is known for in-house development, engineering excellence, and solving real-world challenges through scalable technology. Many of its platforms are built entirely from scratch by local teams.
Why You'll Love Working Here
- Work on one of Japan's top web platforms with real user impact
- Gain hands-on exposure to modern .NET and cloud technologies
- Be part of an agile, collaborative, and fast-paced engineering team
- Career development opportunities through technical leadership
- Central Tokyo office with flexible work environment
Don't Miss Out - Apply Now!
