Software Tester / QA Engineer (Web & API Testing)

Stech Technology UK Limited; Chantilly (VA); On-site; USD 80,000 - 100,000; Full time

Job summary

A technology company is seeking a detail-oriented Software Tester / QA Engineer to support testing of web-based applications and API-driven systems. This role requires 3+ years of experience in software testing, focusing on validating functionality and building automated test coverage. The ideal candidate has strong API testing skills, familiarity with automation frameworks, and is a self-starter. Join a high-performing team to ensure quality and participate in an Agile environment.

Qualifications

• 3+ years of experience in software testing or quality assurance.
• Strong experience testing web applications and RESTful APIs.
• Hands-on experience with API testing tools (e.g., Postman, Swagger).
• Experience with test automation frameworks (e.g., Cypress or equivalent).
• Understanding of programming/scripting languages (JavaScript preferred).

Responsibilities

• Test web-based applications for functionality, performance, and usability.
• Validate API endpoints exposed through API gateways.
• Design, execute, and maintain manual and automated test cases.
• Analyze test results, identify defects, and document issues.

Skills

Software testing

API testing

Test automation

Analytical skills

Tools

Postman

Swagger

Cypress

Git

Job description

(TS/SCI w POLY REQUIRED)

Software Tester / QA Engineer (Web & API Testing)

We are seeking a detail-oriented and technically skilled Software Tester / QA Engineer to support testing of modern web-based applications and API-driven systems. This role is ideal for someone who enjoys digging into systems, validating functionality end-to-end, and building automated test coverage in a fast-paced environment.

Responsibilities

• Test web-based applications for functionality, performance, and usability
• Validate API endpoints exposed through API gateways and backend services
• Design, execute, and maintain manual and automated test cases
• Use tools such as Postman and Swagger to test, document, and validate APIs
• Develop and maintain automated test scripts using frameworks such as Cypress or similar tools
• Analyze test results, identify defects, and clearly document issues for engineering teams
• Collaborate with developers, product owners, and other stakeholders to ensure quality across releases
• Participate in sprint planning, backlog grooming, and Agile ceremonies
• Perform regression, integration, and system-level testing across environments

Required Qualifications

• 3+ years of experience in software testing or quality assurance
• Strong experience testing web applications and RESTful APIs
• Hands-on experience with API testing tools (e.g., Postman, Swagger)
• Experience with test automation frameworks (e.g., Cypress or equivalent)
• Understanding of programming/scripting languages (JavaScript preferred; Python, Java, or similar also acceptable)
• Familiarity with HTTP protocols, JSON, and API authentication methods
• Ability to read and interpret API specifications and documentation
• Strong analytical skills and attention to detail
• Experience working in Agile/Scrum environments

Preferred Qualifications

• Experience testing systems that operate through API gateways or distributed architectures
• Familiarity with CI/CD pipelines and integrating automated tests into build processes
• Experience with version control systems (e.g., Git)
• Knowledge of performance or load testing tools
• Exposure to cloud environments (AWS, Azure, or similar)

What We’re Looking For

• Someone who takes ownership of quality and doesn’t just “check the box”
• A tester who can think like both a user and a developer
• Strong communicator who can clearly explain issues and risks
• Self-starter comfortable working in a small, high-performing team

(TS/SCI w POLY REQUIRED)