Job Description
Backend Engineer – Scalable Payment Systems ( full remote )
We're hiring a backend engineer to help build high-performance payment infrastructure that delivers fast and reliable experiences to millions of users.
Responsibilities:
- Design and build scalable backend systems for high-throughput applications
- Work with cloud infrastructure to optimize performance and reliability
- Own your code from development through production support
- Contribute to tooling and open-source projects where relevant
Tech Stack Highlights:
Java / Kotlin / Scala, Spring Boot, Kafka, Redis, MySQL, DynamoDB, Docker, Kubernetes, AWS, GCP, GitHub, Jenkins, BigQuery
Requirements:
- 3+ years of Java experience
- Solid grasp of algorithms, data structures, and OOP
- Experience with NoSQL and distributed caching
- Understanding of concurrency and distributed systems
- Proficiency in English and Japanese ( business level )
Nice to Have:
- Experience with APIs, pub/sub, AWS services, or financial systems
- Familiarity with microservices and high-scale architectures
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