Software Engineer, xAI

• Experienced: 5+ years in backend or systems engineering, ideally with experience in fintech or high-scale platforms
• Expert in distributed systems: You’ve built, deployed, and maintained systems with high concurrency, fault tolerance, and uptime
• Security- and compliance-minded: You understand the unique challenges of handling sensitive personal financial data, such as payments credentials
• Builder mentality: You’re excited by zero-to-one problems and proven ability to thrive in fast-paced environments. You are willing to work hard
• Strong communicator: You can clearly articulate complex technical ideas and influence technical direction. You look for simple solutions and avoid over-engineering systems

Desirable

• We’re looking for an exceptional Software Engineer for a new payments platform being built at X which serves 600 million+ monthly users
• This is a high-priority role responsible for protecting users and the platform from fraud, abuse, and risk
• As an engineer on the team you’ll be instrumental in shaping the architecture and execution of these new payments products from the ground up
• You’ll apply your expertise in distributed systems, secure transactions, and high-availability architectures to build a robust, scalable payments infrastructure
• This is a rare opportunity to build a foundational product at the intersection of fintech and social platforms—enabling users to move money, access payments services tools, and engage in new digital experiences, all on the X platform
• You'll design and implement core components of a high-scale, low-latency payments platform
• Lead technical decisions across architecture, scalability, security, and reliability
• Work across engineering, product, compliance, and infrastructure teams to deliver end-to-end functionality
• Define and uphold high engineering standards, including testing, monitoring, and continuous deployment practices
• Proactively identify and mitigate technical risks in a complex, regulated domain
• Tech Stack (Optional)
• Golang
• Postgres
• Kafka
• Memcached

• After submitting your application, the team reviews your CV and statement of exceptional work
• If your application passes this stage, you will be invited to a 30 minute phone interview, during which a member of our team will ask technical questions
• If you clear the phone interview, you will proceed to next steps:
• Coding assessment in a language of your choice
• Systems design: Translate high-level requirements into a scalable, fault-tolerant service
• Project deep-dive: Present your past exceptional work to a small audience
• Meet and greet with the wider team
• Our goal is to finish the main process within one week