Join our growing team and help shape the future of our products. We're looking for a Senior Fullstack Developer who is not only technically capable, but also thrives in a collaborative environment and is eager to learn. ## What We're Looking For **Must-Haves:** - 3+ years of experience working in a team (we care more about team dynamics and collaboration skills than strict years of experience) - Solid understanding of Git and modern development workflows - Ability to learn and adapt quickly to technologies we use (TypeScript / Node.js / React / AWS) > You don’t need to be an expert yet — but you should be able to pick things up quickly and work effectively - Strong interpersonal and communication skills - Familiarity with common best practices and development principles > (TDD, DDD, SOLID, Onion Architecture, etc.) - Sharp problem-solving skills and the ability to clearly explain your technical decisions - Self-motivated, proactive, and comfortable learning independently - Intermediate English proficiency (you should be able to communicate and collaborate effectively in English.) **Nice-to-Haves:** - Broad experience across different languages, paradigms, or frameworks > We’re especially interested in engineers who can bring strengths and insights from other tech stacks — not just to choose the right tools, but to create new ones when needed. - Basic Japanese proficiency. ## What You’ll Be Doing - Solving real problems from real people - Improving code quality, reliability, and performance - Leveling up our tooling and developer experience - Shaping our architecture and long-term technical direction - Growing together as a team ## Work Environment - Foreigner friendly (All core devs are foreigners. Can speak both English and Japanese) - Fully remote - Flexible hours (Core time: 10:00–14:00) - Laptop and monitor provided - ChatGPT / Cursor subscriptions available