Middle QA Engineer (Analytics, API)

N-iX is looking for a Middle QA Engineer with API testing experience to join our team on a full-time basis.

About project

It is a web application that focuses on the trading market and provides corporate clients with a comprehensive suite of customization products, offering transparency, flexibility and predictability. The main goal of it is to allow clients to gain exposure to the market, simply and transparently, to extract a return.

• Client Location: United Kingdom;
• Industry: FinTech;
• Team size: 10; 
• Team location: Lviv and London

Key Responsibilities:

1. API Testing:

• Utilize tools such as Postman, Insomnia, or Swagger to test APIs.
• Write and execute API requests (GET, POST, PUT, DELETE) to validate functionality.
• Analyze API responses, including HTTP status codes, data formats (JSON, XML), and performance metrics.
• Work with RESTful and SOAP APIs, ensuring compliance with specifications and expected behaviors.

2. Automation (Optional):

• Familiarity with automating API tests using tools like Postman Collections, Newman, or testing frameworks like REST Assured (Java) or Requests (Python).
• Assist in writing automated test scripts to improve efficiency and coverage.

3. Collaboration:

• Work closely with development teams to understand API requirements and provide feedback on functionality, usability, and performance.
• Participate in Agile development processes, including stand-ups, sprint planning, and retrospective meetings.

4. Bug Tracking:

• Document and report API bugs, and track their status in JIRA.
• Collaborate with developers to reproduce and resolve issues.

5. Documentation:

• Review and contribute to API documentation.
• Ensure that test cases are up to date and reflective of API changes.
• Performance & Security Testing (Optional):
• Assist in testing the performance of APIs (e.g., load testing with tools like JMeter).
• Familiarity with basic security tests, such as verifying authentication, authorization, and data protection mechanisms.

Key Skills:

• API Tools: Experience with Postman, Swagger, and other API testing tools.
• Basic Programming: Knowledge of scripting languages (e.g., Python, JavaScript) is a plus for writing automated tests.
• Problem Solving: Strong analytical skills to identify issues in API responses and integration points.
• Understanding of HTTP/HTTPS: Basic knowledge of web protocols, request methods, and response handling.

Preferred Qualifications:

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• Experience with RESTful and SOAP APIs.
• Familiarity with API testing automation.
• Attention to detail in reviewing API responses and edge cases
• Finance business domain knowledge including trading is a plus