Member of Technical Staff - X Money at xAI

On-site - Tokyo, JP

SpaceXAI is seeking a Software Engineer to join the X Money team, focusing on backend development for a global payment network serving over 600 million users. The role involves designing and optimizing microservices with Go, Postgres, and Kafka, supporting full-stack efforts, and collaborating on payments, fraud detection, compliance, and AI-driven financial products.

Requirements

Skills

5+ years of software engineering experience, with a strong focus on backend development
Proficiency in Go or similar languages and experience with databases (e.g., Postgres) and streaming systems (e.g., Kafka)
Familiarity with building distributed systems for high-scale, low-latency environments
Knowledge of handling secure financial data
Ability to contribute to frontend development for internal tools when required
Strong communication and problem-solving skills, with a collaborative mindset
Experience in fintech, payments, or regulatory frameworks (e.g., PCI-DSS, AML/KYC)
Prior work in a fast-paced, startup-like environment on greenfield projects
Comfort navigating ambiguous requirements and iterating based on feedback
Passion for leveraging AI to transform financial systems

Responsibilities

Develop and optimize microservices for high-concurrency transactions using Go, Postgres, and Kafka
Collaborate on system architecture, testing, and monitoring to ensure uptime and performance
Build internal tools using frontend technologies as needed to support operational efficiency
Support the Technical Lead in risk mitigation and align with engineering, product, and compliance teams to drive project success
Contribute to the development of secure, scalable systems for handling financial data and transactions
Iterate rapidly on feedback to deliver high-quality solutions in a dynamic environment

Technologies

GoPostgresKafka

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