backend developer w java

Summary: Join our established blockchain software house, specializing in enterprise-grade private and public chain solutions. We are seeking a Senior Java Developer to enhance our backend services and contribute to the development of innovative blockchain applications. Responsibilities: Develop and maintain backend services using Java to support blockchain...

**About PayPay Card** PayPay is a FinTech company that in the six years since its launch in 2018, has surpassed 70 million users (as of July 2025) and is rapidly expanding its business scale as a payment platform used by approximately one in two smartphone users in Japan. PayPay Card was established in 2021 to provide users with more accessible and...

We are seeking an experienced **Java Full Stack Developer** to design, develop, and maintain scalable, high-performance web applications. The ideal candidate will possess strong expertise in both backend and frontend technologies and have the ability to deliver end-to-end solutions in a collaborative Agile environment. **Key Responsibilitie** - sDesign,...

We are seeking an experienced Java Full Stack Developer to design, develop, and maintain scalable, high-performance web applications. The ideal candidate will possess strong expertise in both backend and frontend technologies and have the ability to deliver end-to-end solutions in a collaborative Agile environment. Key Responsibilitie ...

Job Description:Business Overview The Technology Platforms Division (TPD) drives the growth of Rakuten's ecosystem by delivering innovative, high-quality technology platforms characterized by integrated control and strategic partnerships.Within TPD, the Cloud Platform Supervisory Department (CPSD) develops and manages Rakuten's state-of-the-art cloud...

◆About the project A leading airline company is transitioning from a legacy loyalty platform to a modernized system. As part of this transformation, the customer-facing loyalty application will be integrated with a newly developed backend platform. The project includes the implementation of necessary UI enhancements and modifications to ensure seamless...

AI & Service Transformation / AI & サービス トランスフォーメーション Backend developer (AIC-261) 職務内容 - About the project A leading airline company is transitioning from a legacy loyalty platform to a modernized system. As part of this transformation, the customer-facing loyalty application will be integrated with a newly...

- Work on green field projects, building systems and applications from scratch - Global team environment with international collaboration - Work in the largest investment bank in Japan and gain the opportunity to work across sophisticated financial technology platforms **Job/Group...

Who We Are: Alpaca is a US-headquartered self-clearing broker-dealer and brokerage infrastructure for stocks, ETFs, options, crypto, fixed income, 24/5 trading, and more. Our recent Series D funding round brought our total investment to over $320 million, fueling our ambitious vision. Amongst our subsidiaries, Alpaca is a licensed financial services...

Job Title: Software Engineering Job Type: Contractor (10-12 hours per week) Location: Remote Job Summary We are looking for experienced software engineers to help train and evaluate next-generation AI systems through real-world software engineering tasks. This role is best suited for developers who can reason through unfamiliar codebases, explain...

**Description** **About KOMOJU** KOMOJU is the leading cross-border payment gateway for Japan. We power payments for companies like video game distribution platform Steam and the popular mobile app TikTok. Today we help thousands of merchants by providing them with the payment infrastructure they need through developer-friendly API’s to integrations on...

**Job Description** **Business Overview** The Technology Platforms Division (TPD) drives the growth of Rakuten's ecosystem by delivering innovative, high-quality technology platforms characterized by integrated control and strategic partnerships. Within TPD, the Cloud Platform Supervisory Department (CPSD) develops and manages Rakuten's...

**Not every backend role lets you solve problems that actually matter. This one does.** We're hiring a Backend Engineer to help build and evolve one of Japan's largest consumer-facing digital platforms. Every feature you develop, every optimization you make, and every architectural decision you contribute to impacts millions of users every day. If you...

**Who We Are:** Alpaca is a US-headquartered self-clearing broker-dealer and brokerage infrastructure for stocks, ETFs, options, crypto, fixed income, 24/5 trading, and more. Our [recent Series D funding round](https://alpaca.markets/blog/alpaca-raises-150-million-at-a-1-15b-valuation-to-build-the-global-standard-for-brokerage-infrastructure/) brought our...

Share this jobShare this job Senior Full-Stack Java Developer We are seeking an experienced Full-Stack Java Developer with 5+ years of hands-on experience in designing, developing, and maintaining enterprise-grade web applications. The ideal candidate will have strong expertise in Java, Spring Boot, modern frontend frameworks, REST APIs, and cloud-based...

**\*Applicants must be residing in Japan for this role.** A Global Financial firm is looking for **Backend Developer (Java, Python, Spring).** Someone with strong hands-on experience developing applications from scratch using Java and Spring Boot (not just maintenance or support). **Responsibilities:** - Work closely with business users in Japan to...

*Applicants must be residing in Japan for this role. A Global Financial firm is looking for Backend Developer (Java, Python, Spring). Someone with strong hands-on experience developing applications from scratch using Java and Spring Boot (not just maintenance or support). Responsibilities: - Work closely with business users in Japan to...

**Job Description** **Business Overview** We are the development department that supports Rakuten's founding business, Rakuten Ichiba. Rakuten Group, Inc. is founded in 1997 and continuing to this day, embodies Rakuten's mission of empowering people and society through innovation, and has created a system that allows people to easily open stores beyond...

Ready to shape how fans in Japan discover, read, and obsess over their next favorite manga? Join our JP Manga team in our Tokyo office, where we build the digital experiences that connect manga lovers with the content they love across mobile and web.We're investing heavily in the reading experience for the next generation of manga readers, and mobile is at...

*Applicants must be residing in Japan for this role. A Global Financial firm is looking for Backend Developer (Java, Python, Spring). Responsibilities: - Work closely with business users in Japan to support their business process transformation by designing and implementing technology solution through agile development - Participate in the...