Payments Backend Engineer — Tokenization & PCI DSS

Resolv Global; Perímetro Urbano Barranquilla; Presencial; COP 56.675.000 - 63.759.000; A tiempo parcial

Descripción de la vacante

Resolv Global is seeking a Backend Engineer specializing in payment infrastructure in Barranquilla to build secure, multi-tenant payment orchestration.

You will design tokenization, vaulting, and gateway integrations, with Node.js/TypeScript, PostgreSQL, and PCI DSS focus.

This independent contract role is on-site in Barranquilla and requires strong security practices and experience with payment systems.

Formación

• 1+ years of professional backend engineering experience.
• Strong hands-on experience with Node.js and TypeScript.
• Practical experience working with payment systems, payment gateways, tokenization, or payment vault infrastructure.
• Strong understanding of PCI DSS, CDE, tokenization, PCI scope reduction, and secure handling of payment data.
• Strong PostgreSQL experience.
• Experience developing and maintaining REST APIs.
• Experience integrating third-party APIs and services.
• Experience managing credentials, API keys, secrets, and sensitive data securely.
• Understanding of multi-tenant architectures and data isolation.
• Experience with AWS and Docker.
• Experience with secrets management and secure application configuration.
• Understanding of idempotency, webhooks, retries, transaction states, and payment lifecycles.
• Knowledge of authentication, authorization, encryption, and secure software development practices.
• Ability to work independently and take ownership of backend systems.

Responsabilidades

• Design and implement payment vault and tokenization integrations.
• Build secure workflows for collecting payment methods, tokenizing, and processing.
• Develop and maintain infrastructure for merchants, gateway accounts, credentials, payment methods, and transactions.
• Integrate and manage multiple merchant configurations with payment gateways.
• Work with payment gateway integrations, including NMI.
• Support secure payment method usage and routing across authorized merchants.
• Design and maintain REST APIs and PostgreSQL data models.
• Build backend services supporting merchants, payment methods, tokens, gateway configurations, and transaction lifecycles.
• Implement secure management of API keys, gateway credentials, secrets, and other sensitive information.
• Ensure sensitive payment information is properly protected across databases, logs, monitoring, and application infrastructure.
• Design systems with PCI DSS scope reduction and Cardholder Data Environment (CDE) security in mind.
• Implement reliable payment workflows using idempotency, webhooks, transaction state management, retries, and failure recovery.
• Troubleshoot complex backend and payment integration issues.
• Contribute to scalable, secure, and maintainable backend architecture.

Conocimientos

Node.js

TypeScript

PostgreSQL

REST APIs

AWS

Docker

Secrets management

Multi-tenant

Herramientas

NMI

Descripción del empleo

Resolv Global is seeking a Backend Engineer specializing in payment infrastructure in Barranquilla to build secure, multi-tenant payment orchestration.

You will design tokenization, vaulting, and gateway integrations, with Node.js/TypeScript, PostgreSQL, and PCI DSS focus.

This independent contract role is on-site in Barranquilla and requires strong security practices and experience with payment systems.