Senior Payments Engineer – Acquiring, Payment Processing

This is a fully remote position, open to applicants in Colombia.

📋 Description

• Design and develop backend services using Golang that integrate with payment processors, gateways, and card networks.

• Take full ownership of authorization, capture, settlement, refunds, reconciliation, and chargeback/dispute processes from start to finish.

• Create idempotent, fault-tolerant, and auditable transaction processing systems within a distributed architecture.

• Work within PCI DSS compliance, including aspects such as tokenization, network tokens, secure handling of payment data, and 3DS/SCA flows.

• Monitor and instrument metrics for authorization/decline rates, processor performance, latency, and accuracy of settlements.

• Employ Claude or similar LLM tools for design, coding, research, testing, and documentation while adhering to security protocols.

• Mentor fellow engineers and elevate engineering standards throughout the team.

• Collaborate with Product, Risk, Compliance, Support, and various engineering teams.

• Occasionally lead small project teams to successful delivery.

⛳️ Requirements

• 7+ years of experience in backend or full-stack engineering, particularly within payments, fintech, or money-movement domains.

• Proficiency in Go, or similar experience in Python, with a focus on building and serving REST APIs.

• Practical experience integrating with payment processors, gateways, or acquiring systems.

• Understanding of authorization, settlement, tokenization, idempotency, reconciliation, and chargebacks/disputes.

• Familiarity with distributed, cloud-based architectures utilizing transactional outboxes or queuing technologies such as Kafka, SQS, or RabbitMQ.

• Proven hands-on experience using Claude or an equivalent LLM to boost productivity, research, and communication.

• Bachelor’s degree in Computer Science, Engineering, or a related discipline.

• Experience with SQL-based RDBMS through an ORM.

• Familiarity with observability tools like Prometheus, New Relic, or Datadog.

• DevOps experience, including CI/CD pipeline management.

• Knowledge of containerized microservice architecture deployed via Kubernetes on AWS.

• A track record of delivering commercial APIs and web applications.

• Proven ability to bring products to market and prioritize enhancements based on stakeholder and customer feedback.

🏝️ Benefits

• Competitive salary ranging from $5,000 to $9,500 USD per month.

• A purpose-driven and innovative environment in fintech and retail.

• An AI-first culture in product development and engineering.

• Opportunities for mentoring engineers and leading small project teams.

• Collaboration with Product, Risk, Compliance, Support, and engineering teams.

• Access to an open-source-focused technology ecosystem.