Test Engineer

CSG Systems International, Inc.

Job Overview

Location

Brazil Remote

Job Type

Full-time

Full Job Description

📋 Description

• As a Test Engineer at CSG Systems International, Inc., you will play a critical role in ensuring the quality, reliability, and performance of the Xponent platform by designing and executing comprehensive test strategies that prevent defects and enhance user experience. Your work directly contributes to delivering robust, scalable software solutions that empower global brands to connect with and serve their customers effectively in the digital economy.
• You will analyze user stories, requirements, and acceptance criteria to create detailed test plans, test cases, and test data; design and execute functional, regression, integration, and exploratory tests for both backend and frontend components; and validate RESTful APIs through request/response validation, error handling, and contract adherence using tools like Bruno to debug and verify API behavior.
• You will collaborate closely with developers, product owners, and fellow Test Engineers to clarify requirements, define acceptance criteria, identify risks early, and participate in refinement and design discussions to improve testability and uncover edge cases before development begins.
• You will log clear, reproducible defects with supporting evidence such as logs, SQL queries, screenshots, and API traces; partner with developers to triage, prioritize, and verify fixes; and track and report on test execution status, defect trends, and test coverage to drive continuous improvement in QA practices.
• You will contribute to evolving QA standards, documentation, and best practices by sharing knowledge through code reviews, pairing, and informal coaching, while helping drive defect prevention by identifying patterns and root causes that strengthen team-wide quality ownership.
• You will gain deep expertise in API testing, Python-based test automation, and Agile QA methodologies while working on a mission-critical platform used by major global enterprises, positioning you for growth into senior QA, test automation, or quality leadership roles within CSG’s innovative and integrity-driven culture.

🎯 Requirements

• Bachelor’s degree in Computer Science, related field or equivalent experience
• 2+ years of professional experience in software testing or quality engineering
• Experience with Python or Javascript/Typescript, including familiarity with basic coding structures and patterns
• Experience creating and executing test cases for backend services and RESTful APIs
• Understanding of common testing types: functional, regression, integration, smoke/sanity
• Basic SQL skills for querying databases to verify test results and investigate defects
• Strong problem-solving and debugging skills; comfortable working with logs, traces, and metrics
• Able to document test cases, results, and defects clearly
• Experience working in an Agile/Scrum or Kanban environment
• Collaborative mindset and willingness to take ownership of quality for assigned features
• Ability to work in a Brazil-based CLT contract position
• Ability to read, write, speak and understand the English language in a business environment

🏖️ Benefits

• Work from Home, hybrid or in-office flexibility
• Employee Belonging Groups fostering inclusion and community
• Medical / Dental / Life Insurance coverage
• Meal Voucher and Day-care benefits
• Paid Vacation, Volunteer, and Holiday Time Off
• Access to CSG’s Guiding Principles culture: Impact, Integrity, Inspiration
• Opportunity to work with a 40+ year industry leader powering digital transformation for global brands

Skills & Technologies

Python

JavaScript

TypeScript

REST

Remote

Degree Required

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CSG Systems International, Inc.

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About CSG Systems International, Inc.

CSG Systems International provides cloud-based revenue management, customer experience, and payment solutions for communications, media, and other service providers worldwide. Its platform handles billing, charging, mediation, analytics, and digital monetization across wireless, wireline, cable, satellite, and OTT services. The company supports complex partner settlements, content monetization, and customer lifecycle management, serving large enterprises and government clients. Operations span North America, Europe, and Asia-Pacific.

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