at Sun* Inc.
Fullstack (.Net + Nextjs/ English Fluency)
WHAT WE DO:
- Develop frontend and backend features using React, Next.js, and .NET / ASP.NET Core
- Build responsive UI components and seamless user experiences for scalable web applications
- Design and implement backend business logic, RESTful APIs, and service layers using .NET technologies
- Integrate and optimize database queries using SQL / ORM frameworks (e.g., Entity Framework, Dapper)
- Collaborate with Product and AI teams to ensure feature completeness and performance
- Ensure quality via code reviews, testing (unit/integration), and observability
WHO YOU ARE:
#Mandatory Skills
- 4+ years of hands-on experience as a Fullstack Engineer (frontend & backend)
- Strong experience with .NET / ASP.NET Core for backend development
- Experience building production-grade web applications using Next.js (React framework) or similar modern frontend frameworks
- Solid experience designing and implementing RESTful APIs or GraphQL services
- Familiarity with PostgreSQL and query performance optimization
- Hands-on experience with ORM or data access frameworks (e.g., Entity Framework, Dapper)
- Experience integrating frontend applications with backend services across the full stack
- Experience working with cloud platforms (AWS, Azure, or GCP)
- Experience with CI/CD pipelines and containerization (Docker)
#Desired Skills
- Experience working with microservices architecture
- Familiarity with AI-related products, AI tools, or LLM-powered platforms
- Experience with modern frontend tooling (e.g., Tailwind CSS, Zustand/Redux, React Query, or similar)
- Experience working with serverless or cloud-native architectures
- Familiarity with observability and monitoring tools
- Experience working in global or English-speaking engineering environments
#Skill requirements
- Excellent English communication skills
- Outstanding teamwork abilities
- Proven ability to prioritize and allocate work
- Sharp critical thinking and logical reasoning
- Effective problem-solving skills
#Attitude Requirements
- Customer-centric mindset
- Adaptability to change
- Commitment to continuous learning and growth
BENEFITS AND PERKS
# Professional, open-minded, and creative environment:
- Work with colleagues who embrace ideas to change the society
- Respect different perspectives within a team
- Strong learning culture that promotes individual development
- The culture of taking risks to experience and thrive
# Focus on individual development:
- Be consulted, accompanied, and supported in career development with the career path system (developing in expertise or management direction) that has been studied and tested for many years
- Be oriented for individual, group, and organizational goals
- Be empowered
- Be supported to define a 3-month or 6-month goal (Goal Define Support)
- Get access to company Learning Hub online library with various courses provided by Udemy, LinkedIn,…
# Special care for employees:
- Salary: Negotiable + competitive allowance (lunch, living allowance, beauty care, Japanese and IT certificates, etc.)
- Performance-based bonus and year-end bonus
- Performance review: Twice/a year
- Hybrid working policy; flexible check-in, check-out
- Comprehensive health insurance Sun* Care
- Seniority Allowance
- Women care allowance: Women’s physiological leave: 2.5 hours/month; Postpartum leave for female employees with under 1-year-old children: 1 hour/day
- Policies supporting learning activities, knowledge sharing, and cultural exchange (Technology Seminar – Tech Expert, Club: Reading, Japanese, Music Club, …
- Annual company trip and quarterly team-building activities.
Note: By applying for this position, you consent to Sun* collecting, storing, and processing your personal data for current and future recruitment purposes. Your data may be shared with relevant parties involved in the recruitment process and will be retained indefinitely until you submit an official written request for its deletion.
