Backend Engineer, Payments Team

POSITION TITLE

Backend Engineer, Payments Team

SUMMARY

The Senior Backend Engineer plays a crucial role in building and maintaining payment systems and financial infrastructure for our platform application. This is a key position within the Payments Team, requiring deep domain expertise in payment processing and fintech. The role is part of the Platform Community, with hiring and technology policies defined and owned by the Engineering Manager.

REPORTS TO

Engineering Manager

JOB DUTIES AND RESPONSIBILITIES

• Build and maintain high-quality payment features and financial infrastructure using Node.js.
• Design, implement, and maintain reliable payment processing flows, reconciliation processes, financial ledger systems including double-entry bookkeeping, and idempotent payment operations.
• Collaborate with the product team and other engineers to ensure seamless integration of payment systems with the broader platform.
• Actively participate in code reviews, providing and receiving constructive feedback to improve overall code quality.
• Participate in interview panels related to platform development hiring.
• Contribute to the Platform Community, sharing knowledge and helping to shape hiring and technology policies.
• Work closely with the Engineering Manager, following the guidelines and direction provided by the Engineering Manager.
• Troubleshoot and resolve software defects and other technical issues in payment-critical systems.

  The duties and responsibilities outlined above are not a comprehensive list and additional tasks may be assigned from time to time based on business needs.

REQUIREMENTS AND QUALIFICATIONS

• At least 7 years of experience in application development using Node.js.
• Proven experience in the payments or fintech domain, including working with payment processing systems in production.
• Strong understanding of the payment processing lifecycle: authorization, capture, refund, void, and chargebacks.
• Experience with reconciliation processes between internal systems and external payment providers.
• Familiarity with financial ledgers and double-entry bookkeeping principles.
• Experience designing idempotent operations in distributed payment systems.
• Strong knowledge of architecture patterns, frameworks, and best practices.
• Strong communication and collaboration skills.
• Bachelor’s degree in Computer Science is preferred.
• English proficiency is a must. It’s important you can communicate your ideas clearly as you will be interacting with English-speaking coworkers.
• Must be based in Buenos Aires.
• Availability to work on-site in our office in CABA two days a week (Tuesdays and Thursdays).

NICE TO HAVE

• Experience working with Stripe APIs and payment infrastructure.