Test Automation Engineer

RS2; Buenos Aires; Presencial; ARS 1.000.000 - 1.500.000; Jornada completa

Descripción de la vacante

RS2 offers secure payment services, payment software and managed services to clients in over 35 countries. The company upholds the highest industry standards and RS2’s in‑house designed payments solution is the software of choice by many of the world’s leading and most innovative banks and financial institutions.

We are looking for a highly analytical QA Engineer to ensure the quality and reliability of our complex systems, designing test strategies, writing automated test scripts, and

Formación

• 2–4 years of QA experience or a combination of QA and software development testing complex systems and APIs.
• Experience testing complex processing pipelines and parsing deeply nested JSON/XML data or raw text blocks.
• Strong SQL skills for data verification (checking database tables, transaction records, or system states).
• Proficiency with Linux command-line tools for server navigation, log analysis, and troubleshooting test environments.
• Knowledge of ISO 8583 is a plus; formal training will be provided.
• Experience with CI/CD pipelines and related tooling (Jenkins, GitHub Actions, GitLab).

Responsabilidades

• Design, write, and execute robust automated test scripts to validate system functionalities and API integrations.
• Develop a deep understanding of OLTP architectures and the data flows between terminals, acquirers, issuers, and card networks.
• Analyze messaging payloads and validate ISO 8583 fields, MTIs, and data bitmaps.
• Gain hands-on experience with open-source libraries like jPOS and configure internal tools to simulate transactions.
• Perform deep-dive debugging by inspecting logs and payloads across test environments.
• Collaborate with core developers to isolate, reproduce, and debug complex issues discovered during testing.

Conocimientos

Quality Assurance

Test Automation

API Testing

SQL

Linux

JSON/XML Parsing

ISO 8583 knowledge

Herramientas

jPOS

Docker

GitLab

Jenkins

Git

CI/CD

Descripción del empleo

RS2 offers secure payment services, payment software and managed services to clients in over 35 countries. The company upholds the highest industry standards and RS2’s in‑house designed payments solution is the software of choice by many of the world’s leading and most innovative banks and financial institutions.

The role

We are looking for a highly analytical QA Engineer to ensure the quality and reliability of our complex systems. In this role, you will be a core contributor to our ecosystem's quality, designing test strategies, writing automated test scripts, and validating intricate data flows. While we handle highly specialized payment networks, you do not need to be a fintech expert on day one—we provide a structured training program to fully bring you up to speed on the ISO 8583 protocol and core payment architectures.

Responsibilities

• Test Automation: Design, write, and execute robust automated test scripts to validate system functionalities and API integrations.
• Master Payment Architectures: Develop a deep understanding of online transaction processing (OLTP) mechanics, including the flows between terminals, acquirers, issuers, and card networks.
• Validate Complex Data & ISO 8583 Messaging: Analyze technical specifications to validate messaging payloads, ensuring fields and data elements are perfectly structured. You will apply a deep understanding of financial message structures, MTIs (Message Type Indicators), data bitmaps, and field layouts.
• Simulator & Tool Utilization: Gain hands‑on experience using open‑source payment libraries (like jPOS) and configure custom internal test tools to orchestrate, parse, and simulate transaction routing mimicking external third‑party dependencies.
• Debugging & Troubleshooting: Perform deep‑dive root cause analysis on test failures and system bugs by inspecting application logs, inspecting data payloads, and analyzing system behavior across test environments.
• Collaborate on System Reliability: Partner closely with core developers to isolate, replicate, and debug complex transactional and data‑routing issues discovered during automated or exploratory test runs.

Requirements

• 2-4 years of professional experience in Quality Assurance, or a combination of QA and previous experience in a software development role, with a strong focus on testing complex systems and APIs.
• Strong experience testing complex processing pipelines and parsing data payloads (such as deeply nested JSON/XML or raw text blocks).
• Strong command of SQL to perform deep data verification (checking database tables, transaction records, or system states post‑execution).
• Comfortable using Linux command‑line tools for server navigation, log analysis, and troubleshooting test environments.
• Payment Domain Knowledge (A Plus, Not a Prerequisite): Any prior exposure to financial message formats, with a strong focus on the ISO 8583 standard, is highly valued, but complete training will be provided.
• Network & Socket Fundamentals: Familiarity with TCP/IP socket communication or analyzing network traffic.
• Infrastructure & DevOps Tooling: Experience executing tests within CI/CD pipelines (Jenkins, GitHub Actions, GitLab), Docker, and utilizing version control via Git. Experience with GitLab pipelines is especially valuable to help us maintain our automated tests.