Senior Backend Engineer

Backend Engineers for PayPay Card

We are looking for backend engineers to build, or rebuild, rock-solid services with a laser focus on scalability and maintainability.

PayPay Card aims to revolutionize the credit card industry, making payment easier than ever, from two different angles:

• Bring the credit card experience to the next level: We have many functionalities in the pipeline to improve our product, not to mention the integration into the PayPay ecosystem as PayPay Card is part of the PayPay Group.
• (Re-)architect our systems landscape: We want to reassess and fix the behind-the-scenes to power a top-notch user experience. It is bundled with difficult design challenges to solve: we simply want to get it right.

As a fast-paced company leading the payments industry, we need our engineers to be versatile and enthusiastic to take on new challenges in order to stay at the forefront. Indeed, we strive for continuous improvement within our systems as well as outside our systems. Additionally, we value communication, to smoothly cooperate with other teams, and inclusivity, to efficiently navigate in a multicultural environment.

Main Responsibilities

• Design, support the implementation, and deliver large scale, and complex systems
• Manage team stakeholders such as product managers or frontend engineers, as well as other team leads or non-tech stakeholders
• Leverage the infrastructure to solve large scale problems
• Act as a gatekeeper to the team's quality standards
• Triage, debug, and resolve product issues or other incoming inquiries
• Mentor other team members and safeguard the team's quality standards

Required Qualifications

• Excellent skills in Java and Spring Boot
• Experience with RDBMS and NoSQL databases, along with distributed cache
• Strong fundamentals in data structures, algorithms, and object-oriented programming
• In-depth understanding of concurrency and distributed computing
• Experience implementing platform components such as RESTful APIs, Pub/Sub Systems, and Database Clients
• Experience with microservices and event-driven architectures
• Experience designing high traffic systems
• Degree in Computer Engineering or Computer Science or 5+ years equivalent experience in SaaS platform development
• English business proficiency

Preferred Qualifications

• Java EE understanding
• Domain-driven development knowledge
• Experience in a multicultural environment
• Stakeholder management is welcomed
• Japanese conversational proficiency is a plus