# Member Of Technical Staff - X Money

**Company:** [xAI](https://hotfix.jobs/companies/xai)
**Location:** Tokyo, Japan
**Role:** Backend Engineering
**Experience:** 5+ years
**Skills:** Go, Postgres, Kafka, Microservices, Distributed Systems, Frontend Development, Pci-Dss, Aml/Kyc, Fraud Detection, Payment Systems
**Posted:** 2026-08-13

> Build and optimize high-scale backend microservices for a global payments platform, supporting secure transactions, fraud detection, and compliance. The role requires at least five years of software engineering experience and proficiency with Go, Postgres, Kafka, and distributed systems.

## Job Description

## 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.

## Requirements
- 5+ years of software engineering experience, with a strong focus on backend development.
- Proficiency in Go or similar languages and experience with databases such as Postgres and streaming systems such as 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.

## Nice-to-haves
- Experience in fintech, payments, or regulatory frameworks such as PCI-DSS and 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.

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