Skillhouse Internal Career Opportunity
Senior Full Stack Engineer (.NET/Azure)(7706)
Position Title:
Senior Full Stack Engineer (.NET/Azure)(7706)
Employment Type:
Haken
Working Hours:
Japanese Level - None,English Level - Advanced (TOEIC 860)
Salary
Description
A Global IT Service is looking for a Full-stack Engineer for its Cyber Security Defense Department.
In this role, you will be responsible for designing, developing, and operating scalable, secure, and maintainable full-stack systems, working closely with cross-functional teams to deliver high-quality services to internal customers across the Group. You will contribute across the full software development lifecycle, from technical design and implementation to testing, deployment, and long-term maintenance.
As a senior engineer, you will play an important role in defining technical standards, improving development practices, and promoting architectural consistency across both backend and frontend components, while also mentoring team members and supporting knowledge sharing within the team.
Responsibilities:
- Design, develop, and deliver scalable and secure cyber security solutions for internal customers
- Act as a key technical contributor in building, standardizing, and continuously improving enterprise-grade cyber security platforms and services.
Required Skills:
- 5+ years of enterprise software engineering experience, delivering and maintaining medium to large-scale applications across the full SDLC
- Strong .NET expertise using C#, .NET Core, and ASP.NET Core, with solid grounding in OOP, design patterns, and clean architecture
- Full-stack development experience, including React, Next.js, TypeScript on the frontend and API-driven backend development
- Cloud engineering experience with Azure (preferred), AWS, and/or GCP, including secure cloud architecture design for production environments
- Backend and data expertise, including Python services, REST/SOAP APIs, relational (Azure SQL / SQL Server) and NoSQL databases (Cosmos DB), plus ORM tools like EF Core and Dapper
- Quality-focused engineering practices, including unit testing (xUnit/NUnit/MSTest), performance tuning, debugging, and maintainable code standards
- Strong communication, documentation, and collaboration skills, with the ability to explain complex technical concepts and manage multiple priorities
- Security- and innovation-minded engineer, with interest in cybersecurity, foundational knowledge of Generative AI/LLMs, and experience using LLM tools to improve developer productivity
Why should you apply:
- This is a long-term opportunity with a chance to become a permanent employee
- You will be working with international team members
- Free breakfast, lunch and dinner at the cafeteria
Company Details:
A global company with a strong presence in multiple business areas. It has achieved sustained growth both domestically and internationally, including in the U.S. and Europe. The company boasts a diverse and international environment and is committed to equal opportunity, offering a wealth of career opportunities. Due to the diverse nature of our business, we handle a wide range of technologies! You can also choose the environment you are most comfortable with, such as Windows/Mac! Meals in the company cafeteria are also free. Our chefs are always coming up with new menu items, so you can enjoy your meal without getting bored!
Working hours: 9:00 - 17:30 (Mon-Fri)
Working Style: Hybrid (4 days in office, 1 day work from home)
Holidays: Saturday, Sunday, and National Holidays, Year-end and New Year Holidays, Paid Holidays, Other Special Holidays
Services/Benefits: Social insurance, DC Pension Plan, Transportation Fee, Skillhouse University, Test payback system, and more
