RemoteLeaf Logo
Log in Sign up

Senior Payments Engineer — Acquiring & Payment Processing

1 day ago
Turkey
Full-time
Senior
Backend Engineer
Software Development
AWS CI/CD Datadog Docker Elasticsearch Git GitLab Go Kafka Kubernetes LLM Microservices MySQL New Relic PostgreSQL Prometheus Python RabbitMQ React React Native REST API SQL TypeScript
Apply Now
Sezzle

Sezzle

Sezzle is a payments company revolutionizing the buy now, pay later experience with interest-free installment plans, empowering consumers and merchants alike.

Diversified Financial Services
251-1K
Founded 2016
View All Jobs 181

Description

  • Design and build backend services in Golang that integrate with payment processors, gateways, and card networks.
  • Own end-to-end money movement flows including authorization, capture, settlement, refunds, reconciliation, and chargeback or dispute handling.
  • Build idempotent, fault-tolerant, and auditable transaction processing in a distributed architecture.
  • Operate payment systems within PCI DSS scope, including tokenization, network tokens, secure payment data handling, and 3DS/SCA flows where applicable.
  • Instrument and monitor payment health metrics such as authorization and decline rates, processor performance, latency, and settlement accuracy.
  • Partner closely with Product, Risk, Compliance, Support, and other engineering teams to deliver scalable solutions.
  • Mentor engineers, unblock peers, and help raise the technical bar across the team.
  • Occasionally lead small project teams to delivery.
  • Use AI tooling such as Claude or equivalent LLMs in the daily workflow for design, coding, research, testing, and documentation within security policies.

Requirements

  • 7+ years of backend or full-stack engineering experience, with meaningful time spent on payments, fintech, or money-movement systems.
  • Strong Go experience preferred, or comparable experience in Python, building and serving REST APIs.
  • Hands-on experience integrating with payment processors, gateways, or acquiring systems.
  • Familiarity with payments fundamentals including authorization vs. settlement, tokenization, idempotency, reconciliation, and chargebacks or disputes.
  • Experience with distributed, cloud-based architectures using patterns like transactional outboxes or queues such as Kafka, SQS, or RabbitMQ.
  • Demonstrated hands-on use of Claude or an equivalent LLM to improve productivity, research, and communication.
  • Bachelor's degree in Computer Science, Engineering, or a related field.
  • Experience with SQL-based RDBMS through an ORM tool.
  • Comfort with observability platforms such as Prometheus, Datadog, or New Relic for production monitoring and alerting.
  • DevOps experience with CI/CD pipelines and containerized microservice architectures deployed with Kubernetes on AWS.
  • Demonstrated history of delivering commercial APIs and web applications.
  • Direct experience with the payments acquiring ecosystem such as Adyen, Stripe, Marqeta, or Fiserv, preferred.
  • Exposure to PCI DSS, 3DS/SCA, network tokenization, or payments compliance, preferred.

Benefits

  • Salary range of $5,000 - $9,500 per month, gross in USD.
  • Remote, full-time role.
  • Opportunity to work in an AI-first engineering culture with AI tools integrated into daily workflows.
  • Work on high-impact fintech systems that directly affect merchant conversions, order values, and payment reliability.

Interested in this position?

Apply directly on the company website

Apply Now

Similar Roles

Grafana

Senior Software Engineer - Grafana Cloud Observability Provider | Germany | Remote

Grafana 1K-5K IT Services

Grafana Labs is hiring a Senior Software Engineer to help design, build, and scale Grafana Cloud’s observability products for metrics and logs in a fully remote, open-source-driven environment.

Germany Spain United Kingdom Sweden Full-time Senior Backend Engineer DevOps Engineer
$105k-$126k
Go Grafana Java Kubernetes Microservices .NET OpenTelemetry Prometheus Python Rust
23 minutes ago
Nebius

Senior Software Developer: Models Team (Token Factory)

Nebius 51-250 Internet Software & Services

Nebius is hiring a backend and infrastructure engineer for the Models Team to help onboard and operate state-of-the-art open-source LLMs in Token Factory, its AI cloud platform for reliable large-scale production inference.

Netherlands Full-time Senior AI Engineer Backend Engineer
Go Kubernetes LLM Python Serverless
23 minutes ago
redbee

Senior Fullstack Developer | Java + React

redbee 51-250 Internet Software & Services

redbee busca un/a profesional senior de desarrollo para crear soluciones digitales estratégicas en la industria financiera, participando en la construcción de productos de misión crítica junto a clientes.

Argentina Brazil Full-time Senior Backend Engineer Full-stack Engineer
AWS DynamoDB Java Kafka Microservices React Redis Spring Boot
38 minutes ago
Intetics

PHP Technical Interviewer

Intetics 1K-5K Internet Software & Services

Intetics Inc. is seeking a Technical Interviewer to conduct and improve technical assessments for PHP developer roles within its custom software and distributed teams business.

Ukraine Senior Backend Engineer Training Specialist
Laravel PHP Symfony
38 minutes ago

You're on a roll! Sign up now to keep applying.

Sign Up

Already have an account? Log in

Used by 14,729+ remote workers