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Backend Engineer

Randstad Japan — Japan · Posted ~3 hours ago

Hybrid 8M-12M JPY

Skills

backend development distributed systems cloud infrastructure DevOps system architecture scalability low-latency systems

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Summary ✨ AI‑Generated

Join a global backend engineering team building and continuously optimizing robust systems for a high-scale digital service. You will design distributed architectures for massive transaction volumes and low latency, use modern cloud and DevOps practices, solve complex scalability challenges, build internal engineering tools, and have opportunities to contribute to open source. Flexible hours and hybrid work are available.

Highlights

Work on large-scale backend systems serving very high transaction volumes, with flexible hours, hybrid work, modern cloud infrastructure, complex distributed-system challenges, and opportunities to contribute to open source.

Description

【Leading Domestic Payment & FinTech Ecosystem】 ■Position: Backend Engineer (Global Team) ■Location: Tokyo Head Office (Remote/Hybrid) ■Work Style: Hybrid Work / Flexible Hours ■Salary: 8M-12M JPY This role drives the evolution of a revolutionary mobile asset management service built upon a massive payment platform used by tens of millions of users nationwide. ■ Responsibilities ・Develop, deploy, and continuously optimize robust backend application systems for a fast-growing, highly accessible digital asset management product. ・Architect and design highly complex, large-scale distributed systems capable of sustaining massive transaction volumes and ensuring low-latency performance. ・Leverage modern cloud infrastructure and DevOps best practices to resolve deep-rooted system challenges and guarantee exceptional scalability. ・Engineer custom internal tools to streamline development workflows and actively contribute to the open-source community to drive industry standards. ・Adopt a rigorous, problem-solving mindset to investigate bottlenecks, trace systemic issues to their root causes, and proactively eliminate technical debt. ■ Requirements 【求められる経験・スキル / required experience and skills】 ・3-5 years of backend dev for in-house products ・Proficiency in Java/PHP, or Scala/Python/Go ・Experience with NoSQL and distributed caching ・Strong grasp of data structures and OOP ・Deep knowledge of concurrency processing ・Business English OR Japanese (JLPT N1) ■ Preferred Qualifications ・Implementation of RESTful APIs or Pub/Sub ・Hands-on experience with AWS services ・Dev experience in highly scalable web systems 【学歴】 大学卒業以上 【職種 / type of occupation】 システム開発（Web・オープン・モバイル系） 【給与 / salary】 年収 800 〜 1,200万円 【賞与】 【雇用形態 / employment status】 正社員 雇用期間 期間の定めなし 【就業時間 / working hours】 09:00～18:00 【休日休暇 / holiday】 土曜日 日曜日 祝日 【保険 / social insurance】 健康保険 厚生年金保険 雇用保険 受動喫煙防止措置 敷地内禁煙 【業種 / industry】 証券 ※詳細はお仕事のご紹介時にお伝えします Job ID: VAC-292489/