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Senior Payments Engineer – Acquiring, Payment Processing

🔥 0 minutes ago

🇨🇴 Colombia – Remote

💵 $5k - $9.5k / month

⏰ Full Time

🟠 Senior

👷🏻‍♀️ Engineer

Where this job comes from

Posted on Sezzle's careers page, not through a job board

First seen by Remote Rocketship 0 minutes ago

Logo of Sezzle

Sezzle

201 - 500 employees

Founded 2016

💳 Fintech

👥 B2C

🛍️ eCommerce

Fintech • B2C • eCommerce

Sezzle is a financial technology company that offers a "buy now, pay later" service, allowing consumers to purchase products and pay for them in four interest-free installments over six weeks. The Sezzle app provides users with a flexible financing alternative to traditional credit cards, enabling instant approval decisions without impacting credit scores. Sezzle partners with various top brands, including Amazon, Walmart, and Target, to offer in-app and in-store payment options. The company's mission is to empower consumers financially by providing more financial freedom and control. It is available as a mobile app, with millions of downloads and high user ratings, and works towards accessibility and inclusion on its platform.

📋 Description

• Design and build backend services in Golang integrating 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 in a distributed architecture • Operate within PCI DSS scope, including tokenization, network tokens, secure payment-data handling, and 3DS/SCA flows • Instrument and monitor authorization/decline rates, processor performance, latency, and settlement accuracy • Use Claude or equivalent LLM tools for design, coding, research, testing, and documentation within security policies • Mentor engineers and raise engineering standards across the team • Partner with Product, Risk, Compliance, Support, and other engineering teams • Occasionally lead small project teams through delivery

🎯 Requirements

• 7+ years of backend or full-stack engineering experience, with meaningful experience in payments, fintech, or money-movement systems • Strong Go, or comparable Python experience, building and serving REST APIs • Hands-on experience integrating with payment processors, gateways, or acquiring systems • Familiarity with authorization, settlement, tokenization, idempotency, reconciliation, and chargebacks/disputes • Experience with distributed, cloud-based architectures using transactional outboxes or queuing tools such as Kafka, SQS, or RabbitMQ • Demonstrated hands-on use of Claude or an equivalent LLM to enhance productivity, research, and communication • Bachelor's degree in Computer Science, Engineering, or a related field • Experience with SQL-based RDBMS through an ORM • Experience with observability platforms such as Prometheus, New Relic, or Datadog • DevOps experience with CI/CD pipelines • Familiarity with containerized microservice architecture deployed with Kubernetes on AWS • Demonstrated history of delivering commercial APIs and web applications • Record of bringing products to market and prioritizing improvements based on stakeholder/customer feedback

🏖️ Benefits

• Competitive salary of $5,000–$9,500 USD per month • Purpose-driven, innovative fintech and retail environment • AI-first product and engineering culture • Opportunities to mentor engineers and lead small project teams • Collaboration with Product, Risk, Compliance, Support, and engineering teams • Access to an open-source-focused technology environment

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