2 months ago
Remote, ChileSenior
Responsibilities
- Design and build backend services in Go that integrate with payment processors, gateways, and card networks.
- Own authorization, capture, settlement, refunds, reconciliation, and chargeback/dispute flows end to end.
- Build idempotent, fault-tolerant, auditable transaction processing using distributed architectures and queues.
- Operate within PCI DSS scope, including tokenization, network tokens, secure payment-data handling, and applicable 3DS/SCA flows.
- Monitor authorization rates, decline rates, processor performance, latency, and settlement accuracy.
- Use Claude or equivalent LLM tools for design, coding, research, testing, and documentation in accordance with security policies.
- Mentor engineers, unblock peers, and occasionally lead small project teams.
- Partner with Product, Risk, Compliance, Support, and engineering teams to deliver scalable payment solutions.
Requirements
- 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, building and serving APIs.
- Hands-on experience integrating payment processors, gateways, or acquiring systems, with knowledge of authorization, settlement, tokenization, idempotency, reconciliation, and chargebacks/disputes.
- Experience with distributed cloud architectures, transactional outboxes, and queuing tools such as Kafka, Amazon 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.
- Experience with SQL-based relational databases through an ORM and observability tools such as Prometheus, New Relic, or Datadog is preferred.
- Familiarity with DevOps, CI/CD pipelines, containerized microservices, Kubernetes, and AWS is preferred.
- Experience delivering commercial APIs and web applications and prioritizing improvements based on stakeholder or customer feedback is preferred.
- Experience with acquiring ecosystems such as Adyen, Stripe, Marqeta, or Fiserv and exposure to PCI DSS, 3DS/SCA, network tokenization, or payments compliance are preferred.
Benefits
- Full-time, remote role.
- Monthly gross compensation is provided in USD.
- Employees have access to a culture centered on innovation and interests including music, yoga, cycling, cooking, golf, dogs, and rock climbing.
Tech Stack
Apache KafkaAWSDatadogElasticsearchGitGoKubernetesMySQLPostgreSQLPrometheusPythonRabbitMQReactReact NativeSQLTypeScript
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.