Quality Assurance Engineer

Job description

We are seeking an experienced QA/ Validation Engineer with strong hands‑on expertise in manual and automation testing, REST API validation, JSON schema validation, and Python‑based simulation. The role focuses on validating end‑to‑end workflows across credit cards, loans, and lending platforms, ensuring accuracy of decisioning logic, API behaviour, data flows, and integrations. The candidate must demonstrate strong communication, effective collaboration as a team player, and the ability to work independently with full ownership and accountability.

Key Responsibilities

• Perform manual and automated testing of REST APIs, decisioning components, and integration workflows.
• Conduct JSON schema validation, payload structure checks, and API contract verification.
• Review and validate API documentation using Swagger / OpenAPI specifications.
• Develop Python scripts for simulation, automation, and data validation.
• Prepare and maintain test plans, test cases, and use cases.
• Validate decision strategy outputs, API request/response mappings, and ODS data.
• Log and track defects in JIRA and prepare XRAY execution reports.
• Work closely with dev, BA, and strategy teams to ensure high‑quality deliverables.
• Participate in Agile ceremonies and support performance/monitoring activities where required.

Core Skills

• Testing: Manual, REST API, Automation
• Technologies: JSON, JSON Schema, Swagger/OpenAPI
• Tools: Python, Karate, Excel, LoadRunner, Insomnia/Bruno
• CI/CD: GitLab, Jenkins
• Monitoring: Kibana, AppDynamics
• Concepts: SDLC, TDD, OAuth, Authentication/Authorization, Tokenization/Detokenization
• Good to have experience around Experian Strategy Manager validation, Experian Open Data Platform validation

If the opportunity interests you then please apply for the role

Extra information

Status

Open

Education Level

Secondary School

Location

Northampton

Type of Contract

Full-time jobs

Published at

04-02-2026

Profession type

Accountancy

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English