We’re looking for a technically skilled, detail-oriented, and solutions-driven Payment Systems Integration Engineer who thrives in fast-paced environments and is passionate about building and optimizing payment infrastructure. You should be proactive and curious — energized by the challenge of integrating payment partners, ensuring seamless transaction flows, and troubleshooting complex systems to support secure, scalable, and global payment operations.

As a Payment Systems Integration Engineer, you will be instrumental in integrating and optimizing payment systems to support our global growth strategy. You’ll work at the core of our fintech platform, helping to deliver secure, seamless, and scalable payment solutions tailored to diverse customer needs across multiple geographies. This is a key opportunity to shape how we build and manage payment infrastructure as we grow internationally.

What You Will Do

• Integrate and maintain payment systems and gateways to ensure seamless transaction processing across multiple platforms and regions.
• Design and implement secure APIs and services to interface with third-party payment providers and internal systems.
• Collaborate with product, engineering, and finance teams to define and implement payment flows and reconciliation processes.
• Monitor and troubleshoot payment transaction failures, delays, and discrepancies, ensuring high system availability and fast resolution of issues.
• Maintain clear and up-to-date technical documentation for payment integrations, including flow diagrams, API references, and vendor-specific nuances.

What You'll Need To Have

• Bachelor's degree in Computer Science, Information Technology, Engineering, or a related technical field.
• At least 2–4 years of experience in backend development or API integration, ideally with exposure to payment systems.
• Fluency in English (C1/Advanced), both written and verbal
• You’re curious, self-motivated, and excited to dig into how global payment infrastructures work.
• You have a proactive mindset — always looking for ways to improve processes and solve system integration challenges.
• Proficient in PHP, with strong experience in Laravel or similar frameworks for backend development.
• Deep understanding of MySQL: writing complex queries, performance tuning, indexing, and maintaining data integrity.
• Hands-on experience integrating third-party APIs — especially payment gateways — using REST, SOAP, JSON-RPC, and Webhooks.
• Familiarity with various payment API flows: token-based, session-based, redirect, server-to-server, and client-side SDKs.
• Skilled at interpreting and implementing complex API documentation quickly and accurately.
• Solid knowledge of web security practices, including CSRF/XSS protection, token management, encryption, and PCI DSS compliance.
• Experience with queue systems, background processing, and asynchronous event handling (e.g., Laravel Queues, Redis, RabbitMQ).

Why Join FasterPay?

If you are eager to take your career to the next level in the payment industry, this is the opportunity for you. We offer:

• Competitive compensation depending on experience and skills
• Career advancement opportunities across a global network
• A dynamic, international team environment
• Exposure to the fintech and gaming industries
• Office-based role in Buenos Aires office (La Maquinita – Palermo Soho)

This role is the ideal opportunity for someone looking for new challenges that would allow them to make a noticeable, positive impact in the company while learning and adapting to our fast-paced scale-up environment.

As part of our growing team in Buenos Aires, you will have a lot of opportunities to develop your career further with us. With future expansion plans, now is a great time to join us on our journey to change the way we pay.

Notes: Only shortlisted candidates will be contacted.