Senior QA Engineer: API & AWS Systems Testing

DataArt; Monterrey; On-site; MXN 420,000 - 660,000; Full time

Job summary

DataArt in Monterrey is seeking a QA Engineer to ensure quality and reliability for an AWS-based project. You will test REST APIs, validate data, and investigate events across distributed services.

You will join an Agile team focused on delivering high-quality solutions for notable clients. The role requires meticulous testing, strong analytical skills, and a passion for quality assurance in complex systems.

Qualifications

• Hands-on experience testing REST APIs with Swagger and Postman.
• Strong knowledge of HTTP methods, status codes, headers, and JSON bodies.
• Strong test design skills for positive, negative, boundary, and validation testing.
• Ability to analyze API errors and understand sequential validation.
• Experience preparing complex test data and managing data dependencies.
• Working knowledge of SQL and logs; familiarity with AWS and event-driven systems.
• Attention to detail and structured issue investigation.

Responsibilities

• Test REST APIs using Swagger and Postman across GET, POST, PUT, PATCH, and DELETE requests.
• Design positive and negative test scenarios covering boundary cases, missing values, null values, empty values, duplicates, and item replacement.
• Validate HTTP status codes, headers, query parameters, request bodies, and API responses.
• Analyze API errors by reviewing error codes, field paths, data types, and validation details.
• Prepare test data for large payloads and build dependencies between data elements.
• Read and interpret logs to investigate events in AWS-based systems.
• Write SQL queries to inspect and verify data.
• Test event-driven workflows and integrations between systems.

Skills

REST API testing

Swagger & Postman

Test design

API error analysis

SQL queries

AWS logs & event-driven

Tools

Swagger

Postman

AWS

Job description

DataArt in Monterrey is seeking a QA Engineer to ensure quality and reliability for an AWS-based project. You will test REST APIs, validate data, and investigate events across distributed services.

You will join an Agile team focused on delivering high-quality solutions for notable clients. The role requires meticulous testing, strong analytical skills, and a passion for quality assurance in complex systems.