QA Engineer at Forsyth Barnes, London Area, £475–£500 per day

QA Engineer – Remote | £475–£500/day | Outside IR35 - 3 Month Contract

We are looking for an experienced QA Engineer to join our team on a 3 month contract. This role is paying £475–£500 per day and is Outside IR35.

You will be responsible for ensuring the quality and reliability of API integrations and payment-related workflows, working closely with developers to validate new features, identify defects, and support the delivery of robust, high-quality software.

Core Requirements

• Strong commercial experience testing C#/.NET APIs
• Hands-on experience with testing tools such as Postman, REST Assured, Playwright, or similar automation/testing frameworks
• Experience testing webhooks, asynchronous event-driven workflows, and terminal/POS transaction flows
• Solid understanding of API testing, debugging, and validating request/response behaviour
• Experience creating and executing test cases, identifying defects, and working collaboratively with development teams to resolve issues
• Comfortable working within Agile delivery environments

Desirable Skills

• Experience working with Adyen payment integrations
• Knowledge of payment processing, transaction lifecycles, and POS testing
• Previous experience testing payment gateways or fintech/payment solutions

This is an excellent opportunity for a QA Engineer with strong API testing experience to work on a modern payments platform within a collaborative, remote-first team.