Principal Backend Engineer (Java Springboot/Kotlin)

TOP 3 REASONS TO JOIN US

• Perks you will love: Hybrid woring; 16 - 24 paid days off; Top modern & sufficient devices
• Solid global business: No.1 market - 13.7 million B2C users in Japan; 140,000+ paying business customers; Listed in the prime market of Tokyo Stock Exchange
• Hub of growth support: Fintech industry; Tailored L&D programs for individual growth

JOB DESCRIPTION

We're building Saas products and services and there are certainly a lot of things to do. As part of the team, you’ll encounter both technical and business challenges on a daily basis. Below are some examples that we believe you will find interesting. 

Tech challenges:

•   Performance optimization (slow DB queries, High latency API,...)
•   Microservice design (domain driven design, decoupling service,...)
•   Async processing
•   Service logging & monitoring

Business challenges:

•   Large enterprise support with thousands of record
•   Pay as you go charging
•   Domain boundary context

RESPONSIBILITIES

• Develop BtoB applications having a massive amount of data from scratch
• Design a complex architecture that includes API linkage to external systems
• Quickly fix system failures or abnormalities by monitoring or notifications
• Improve CI/CD for the delivery of a product
• Introduce tools, systems and cultures for efficient development
• Develop fundamental skills of team members
• Lead the development team of 7+ members with Agile/scrum methodologies and processes.

REQUIREMENTS

• We are looking for below roles: 
  • Principal Java Engineer (8+ years of total experience in Java) 
• Our requirements: 
  • Must Have: 
    • Having experience in Java/Kotlin development with detail mentioned above
    • Having experience in operation of an application on a production environment
    • Experience to develop B2B applications
    • Experience in improving application performance
    • Experience with Agile development
    • Having a strong product mindset 
    • Container-based development (Docker, docker-compose, Kubernetes) experience
    • Writing comprehensive and maintainable test code
    • ​​Experience using, designing, and building GraphQL Web Service APIs
    • Extensive experience with Spring framework: Spring Boot, Spring Data, Spring Security, Spring Batch, Spring Cloud
    • Knowledge of Domain Driven Development and Onion Architecture 
    • Strong knowledge of sql (MySQL) and no-sql design/optimization and ORM 
    • Experience with Microservices
    • 3+ years experience in leading a team of 7+ engineers to build, deliver and operate projects successfully, fostering a collaborative and high-performance culture.
    • Strong sense of ownership
    • Excellent English verbal communication skills
    • Have ability to build and review technical architecture, have the ability to provide solutions for technical problems and train junior members in the team. 
  • Nice to Have: 
    • Experience with Terraform (IaC).
    • Experience with scrum master role.
    • Experience working in a multi-cultural environment.
    • Build and maintain application infrastructure built on AWS