Senior Backend Engineer

Summary

Join PayPay, a rapidly growing FinTech company with over 65 million users, as a Senior Backend Engineer. You will design and develop large-scale, high-throughput payment systems. Leverage your expertise in Java or other languages, databases, and distributed computing to build and optimize our applications. Collaborate with product managers and other stakeholders to deliver features on time. Enjoy a flexible work-from-anywhere environment with competitive benefits and a focus on professional growth. We offer a unique work culture and a chance to contribute to a cutting-edge payment platform.

Requirements

• Excellent skills in Java, or any other generalized programming language, such as Scala, Python, or Go
• Interest and ability to learn other coding languages as needed
• Experience with SQL 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
• Experience designing high traffic systems
• Degree in Computer Engineering or Computer Science or 5+ years equivalent experience in SaaS platform development
• Business of English or Japanese

Responsibilities

• Design large scale systems with high complexity to support our high throughput applications
• Understand how to leverage infrastructure for solving such large scale problems
• Develop tools and contribute to open source wherever possible
• Adopt problem solving as a way of life – always go to the root cause! Support the code you write in production
• Participate in code reviews to maintain high quality code standards and ensure security/data protection measures
• Support team members by providing technical guidance and design directions
• Constantly identify performance improvements and optimize the application for maximum speed and scalability
• Collaborate with product managers ands other stakeholders to gather requirements and deliver features on time

Preferred Qualifications

• Experience in working for system development in finance, payment, or similar industries
• Language ability in Japanese and English is a plus (We have a professional translator but it is nice to have language skills)
• Experience with AWS services

Benefits

• Social Insurance (health insurance, employee pension, employment insurance and compensation insurance)
• 401K
• Translation/Interpretation support
• VISA sponsor + Relocation support
• Work From Anywhere at Anytime
• Super Flex Time (No Core Time)
• Every Sat/Sun/National holidays (In Japan)/New Year's break/Company-designated Special days
• Annual leave (up to 14 days in the first year, granted proportionally according to the month of employment. Can be used from the date of hire)
• Personal leave (5 days each year, granted proportionally according to the month of employment）
• ���PayPay's own special paid leave system, which can be used to attend to illnesses, injuries, hospital visits, etc., of the employee, family members, pets, etc
• Annual salary paid in 12 installments (monthly)
• Reviewed once a year
• Special Incentive once a year *Based on company performance and individual contribution and evaluation
• Late overtime allowance, Work from anywhere allowance (JPY100,000)
• ���Payroll payment can be changed to digital salary payment “PayPay Paycheck” for an amount set by you