Full-Stack Engineer (Java/Spring Boot+Vue.js) Fintech Back-Office Platform

Location requirement You must already be living in Japan. If you need your employer to handle the work authorization paperwork, Abbeal takes care of it. We do not relocate or sponsor visas from overseas for this role, and applications from outside Japan will not be considered. Abbeal is hiring a backend-leaning Full-Stack Engineer for a large Japanese fintech in Tokyo. Java 21 and Spring Boot first, Vue.js 3 second, some Kotlin, Docker and CI/CD. English-speaking team, no Japanese required. Permanent contract or freelance. Quick start. The context Long-term engagement with a large Japanese fintech. You join the team that builds and runs the internal back-office platform: the tools employees use every day to manage users, merchants and their data. The team works in English, the product is used by people across the company, and you own features end to end, from the backend service to the screen. What you'll do Build and evolve backend services in Java 21 and Spring Boot 3, in a microservice architecture (BFF pattern) Develop the frontend of the internal tools with Vue.js 3 Contribute to the parts of the codebase written in Kotlin Work with Docker, Kubernetes, ArgoCD and Jenkins to ship safely, with SonarQube quality gates on every PR Own your features: talk with product managers and internal user s, clarify needs, follow them to production Take part in Scrum ceremonies, code reviews, unit, integration and regression testing What we're looking for (in order of priority) Currently based in Japan (Tokyo area) with valid work authorization, no relocation or visa sponsorship from overseas for this role Java and Spring Boot: solid production experience, this is the first criterion Vue.js (3 ideally), or real willingness to work on the frontend side Kotlin: a plus Docker and CI/CD (Kubernetes, ArgoCD, Jenkins or similar): a plus 5+ years of software engineering experience, autonomous, product mindset Business-level English. Japanese is a plus, not a requirement Available quickly Stack Java 21, Spring Boot 3, Kotlin, Vue.js 3, MySQL, Redis, Kafka, BigQuery, Docker, Kubernetes, ArgoCD, Jenkins, SonarQube, GitHub, Grafana, Kibana, PagerDuty, Jira. The terms Permanent contract with Abbeal Japan, or freelance: both are open Tokyo, hybrid Start: as soon as possible Long-term engagement Compensation competitive, aligned with the Tokyo market and your experience Why Abbeal Remote-first company, with a coworking pass paid by Abbeal Unlimited online training Tech meetups and a tech blog where you can publish A team of engineers across Tokyo, Paris and Montreal