2 months ago
Bogotá, ColombiaSenior
Responsibilities
- Design and build Golang backend services integrating with payment processors, gateways, and card networks.
- Own authorization, capture, settlement, refunds, reconciliation, and chargeback or dispute-handling flows.
- Build idempotent, fault-tolerant, auditable transaction processing using distributed-architecture patterns and queues.
- Implement payment-data protections including tokenization, network tokens, and applicable 3DS/SCA flows within PCI DSS scope.
- Monitor authorization and decline rates, processor performance, latency, and settlement accuracy.
- Use Claude or equivalent LLM tools for design, coding, research, testing, and documentation while following security and data-handling policies.
- Mentor engineers, unblock peers, and occasionally lead small project teams.
Requirements
- At least 7 years of backend or full-stack engineering experience, including meaningful experience with payments, fintech, or money-movement systems.
- Strong Go experience preferred, or comparable Python experience, including building and serving APIs.
- Hands-on experience integrating with payment processors, gateways, or acquiring systems and knowledge of authorization, settlement, tokenization, idempotency, reconciliation, and disputes.
- Experience with distributed cloud architectures, transactional outboxes, and queuing tools such as Kafka, SQS, or RabbitMQ.
- Demonstrated hands-on use of Claude or an equivalent LLM to improve productivity, research, communication, and engineering output.
- Bachelor’s degree in Computer Science, Engineering, or a related field.
- Preferred experience includes SQL-based relational databases through an ORM, observability platforms, CI/CD pipelines, Kubernetes, AWS, commercial APIs, and web applications.
- Preferred payments knowledge includes Adyen, Stripe, Marqeta, Fiserv, PCI DSS, 3DS/SCA, and network tokenization.
Benefits
- Full-time, remote role.
- Employees can participate in a culture involving activities such as music, yoga, cycling, cooking, golfing, dog ownership, and rock climbing.
Tech Stack
Apache KafkaAWSDatadogElasticsearchGitGoKubernetesMySQLPostgreSQLPrometheusPythonRabbitMQReactReact NativeTypeScript
Categories
About Sezzle
Sezzle builds a buy now, pay later platform that lets consumers split purchases into interest-free installments online and in stores, integrated with e-commerce and retail merchants. The company earns revenue from merchant fees and related consumer charges and provides underwriting and payment processing services. Founded in 2016 and headquartered in Minneapolis, Sezzle is a public company dual-listed on Nasdaq and the ASX.