Senior Backend Engineer
Description For Senior Backend Engineer
PayPay, a rapidly growing FinTech company with over 65M users, is seeking a Senior Backend Engineer to work on their P2P and Chat systems. This role offers an exciting opportunity to design and implement large-scale, high-complexity systems that support high-throughput applications. The ideal candidate will have strong skills in Java or similar languages, experience with SQL and NoSQL databases, and a deep understanding of distributed computing.
As a Senior Backend Engineer at PayPay, you'll be responsible for leveraging infrastructure to solve large-scale problems, developing tools, and contributing to open-source projects. You'll collaborate with front-end developers, participate in code reviews, and provide technical guidance to team members. The role requires a problem-solving mindset and the ability to optimize applications for maximum speed and scalability.
PayPay offers a diverse and inclusive work environment, with team members from over 50 countries. The company provides a range of benefits, including a 401K, social insurance, visa sponsorship, and relocation support. With a "Work From Anywhere" policy and super flex time, PayPay offers excellent work-life balance.
This position is ideal for those with 5+ years of experience in SaaS platform development or a degree in Computer Engineering or Computer Science. If you're passionate about FinTech, enjoy tackling complex technical challenges, and want to be part of a company that's shaping the future of digital payments in Japan, this role at PayPay could be your next career move.
Responsibilities For Senior Backend Engineer
- Design large scale systems with high complexity to support high throughput applications
- Understand how to leverage infrastructure for solving large scale problems
- Develop tools and contribute to open source wherever possible
- Adopt problem solving as a way of life – always go to root cause
- Support the code you write in production
- Collaborate with front-end developers and external team members
- Participate in code reviews
- Support team members by providing technical guidance and design directions
- Identify performance improvements and optimize the application
- Collaborate with product managers and other stakeholders
Requirements For Senior Backend Engineer
- 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 level English or Japanese
Benefits For Senior Backend Engineer
- 401K
- Social Insurance (health insurance, employee pension, employment insurance and compensation insurance)
- Translation/Interpretation support
- VISA sponsor + Relocation support
- Work from anywhere allowance (JPY100,000)
- Annual leave (up to 14 days in the first year)
- Personal leave (5 days each year)
- Super Flex Time (No Core Time)
