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Senior Payments Engineer — Acquiring & Payment Processing

SezzleChile, RemoteDV-Development
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Posted
22 Jun 2026
Status
Open · checked 7d ago

About this role

Role Overview

The Senior Payments Engineer role at Sezzle is a remote, backend-focused position based in Chile that suits an experienced developer with a strong background in fintech. This opportunity involves managing and scaling the core financial infrastructure that powers payment processing, gateway integrations, and fund movement.

Key Responsibilities

Design and construct backend services using Golang to interface with card networks, payment gateways, and processors.
Manage end-to-end money movement processes, including authorizations, captures, settlements, refunds, reconciliations, and chargebacks.
Implement fault-tolerant, idempotent, and auditable transaction processing through distributed architectures and messaging queues like Kafka, SQS, or RabbitMQ.
Ensure adherence to PCI DSS standards by managing tokenization, network tokens, secure payment data handling, and 3DS or SCA flows.
Monitor and measure payment performance metrics, such as latency, authorization and decline rates, and settlement accuracy.
Utilize large language models like Claude daily for tasks spanning research, coding, design, testing, and documentation while complying with data security policies.
Guide and mentor other engineers to elevate overall team performance.

Requirements

Seven or more years of backend or full-stack software engineering experience, specifically within payments, money movement, or fintech systems.
Strong professional background utilizing Go, or comparable experience with Python to construct and serve REST APIs.
Practical experience integrating with acquiring systems, gateways, or payment processors, alongside a solid grasp of fundamental payments concepts.
Background in cloud-based distributed architectures employing queuing tools or transactional outbox patterns.
Demonstrated, hands-on application of Claude or similar large language models to boost productivity and daily communication.
Bachelor of Science degree in Computer Science, Engineering, or a related field.

Nice to Have

Direct working experience with the payments acquiring ecosystem, including companies like Adyen, Stripe, Marqeta, or Fiserv.
Exposure to payments compliance, network tokenization, 3DS or SCA, and PCI DSS.
Familiarity with SQL-based relational databases through Object-Relational Mapping tools.
Experience utilizing observability platforms such as Datadog, Prometheus, or New Relic for production monitoring and alerting.
Background in DevOps, CI/CD pipelines, and containerized microservices deployed via Kubernetes on AWS.
A proven history of shipping commercial payment APIs and prioritizing features based on customer and stakeholder feedback.

Skills and Tools

Languages: Golang, Python, TypeScript, Golang
Frontend: React, React Native
Databases: MySQL, Postgres, Elasticsearch
Cloud & DevOps: AWS, Kubernetes, Git, GitLab CI/CD
Messaging: Kafka, SQS, RabbitMQ
AI Tools: Claude and equivalent Large Language Models

Salary and Benefits

Monthly compensation ranges from $5,000 to $9,500 USD gross, reflecting the leadership and technical expertise required for this senior position.

About the Company

Sezzle operates with a mission to financially empower the next generation by blending innovative technology with interest-free installment plans that improve the shopping experience. The company aims to make shopping more accessible and transparent while driving genuine merchant sales growth through increased conversion rates and higher order values. Sezzle fosters an AI-first product and engineering culture that values velocity, high standards, calculated risk-taking, and secure-by-default software development.

How to Apply

Interested candidates should visit the official Sezzle careers page to submit an application for this remote position.

Skills and tech stack

PythonSQLAWSKubernetesReactTypeScriptGolangLLMKafka

Questions candidates ask

What is the salary for the Senior Payments Engineer role?

The gross compensation ranges from $5,000 to $9,500 USD per month, depending on expertise and leadership capabilities.

Is this position remote?

Yes, this role is remote and based in Chile.

What programming languages are required or used?

Golang is strongly preferred for backend services, alongside experience with Python and TypeScript. Frontend technologies include React and React Native.

Are AI tools used in daily workflows at Sezzle?

Yes, demonstrated hands-on experience using Claude or equivalent large language models for research, coding, design, and documentation is a requirement for this role.

How many years of experience are required?

Candidates must have 7+ years of backend or full-stack engineering experience, with meaningful time dedicated to payments, fintech, or money-movement systems.

Ready to apply?

The application is on the official Sezzle careers page.

Apply on company site