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Vallum Associates

QA Automation Engineer (Python / PyTest / Cosmos DB)-Banking Client Exp Required

Hybrid

London, United kingdom

Freelance

20-01-2026

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Skills

Communication Python JavaScript HTML CSS SQL NoSQL Big Data Data Engineering GitLab CI/CD DevOps Version Control Jenkins Azure DevOps Test Selenium Test Automation Scrum Regression Databases git Azure api testing Postman Agile CI/CD Pipelines Gitlab CI

Job Specifications

Job Title: QA Automation Engineer (Python / PyTest / Cosmos DB)-Banking Client Exp Required

Location: London- 3Days/week Onsite

Duration: 6months+ Contract Inside IR35

500GBP/Day

Role Overview

We are looking for a QA Automation Engineer to join a Pod-based delivery team working on critical applications and data platforms within a global financial market's environment. The role is key to ensuring high quality, reliability, and regulatory compliance across systems that handle large transaction volumes and business-critical data.

The ideal candidate will be hands-on in manual and automated testing, with strong experience in Python, PyTest, and exposure to Cosmos DB. The role also requires close collaboration with developers, product owners, and data engineering teams in an Agile, CI/CD-driven environment.

Key Responsibilities

Design and execute manual and automated test cases across functional, regression, integration, and end-to-end scenarios
Validate financial calculations, transaction flows, compliance logic, and reporting across multiple platforms
Perform end-to-end data validation across ETL pipelines, databases, and reporting layers
Develop, maintain, and enhance test automation scripts using Python and PyTest
Support API testing using tools such as Postman and Python libraries
Validate system performance and scalability using performance and load testing tools
Ensure systems and data meet regulatory requirements (GDPR, SOX, etc.) through targeted test scenarios and documentation
Log, track, triage, and report defects using agreed tools and processes
Work closely with product owners, developers, and business stakeholders to translate requirements into effective test scenarios
Create, maintain, and update test documentation and internal knowledge repositories

Essential Skills & Experience

Strong experience designing and executing test cases across multiple test phases
Hands-on Python experience for test automation
Strong experience with PyTest (or similar automation frameworks such as Robot Framework)
Experience working with Cosmos DB (or strong NoSQL database testing experience)
Experience in API testing (Postman, Requests, etc.)
Strong SQL skills for data validation across databases and reporting layers
Experience with Big Data testing and data-intensive platforms
Familiarity with CI/CD pipelines and version control tools (Git, Jenkins, GitLab CI, Azure DevOps)
Experience working in Agile / Scrum environments
Strong communication skills and ability to collaborate within cross-functional Pod teams

Desirable / Nice to Have

Experience working in financial services or banking environments
Understanding of financial regulations such as GDPR, SOX
Experience with cloud-based QA practices
Exposure to AI-assisted testing tools
Knowledge of web technologies (HTML, CSS, JavaScript) and browser automation tools (Selenium)
Formal QA certification (ISTQB or equivalent)
Experience with Microsoft Fabric (advantageous)

What the Client Is Looking For

A hands-on QA engineer, not just a test coordinator
Comfortable working in fast-paced, high-volume, regulated environments
Strong automation mindset with attention to data quality and system reliability
Ability to adapt quickly and deliver quality at speed

Priyanka Sharma

Senior Delivery Consultant

Office: 02033759240

Email: psharma@vallumassociates.com

About the Company

Vallum Associates offer best in class talent acquisition on a contingency, retained, or project basis. Through our dedicated sector consultants, our specialised brands have the knowledge and connections to provide tailored hiring and project services across industries : * Banking & Financial * Energy, Utilities & Commodities * Engineering & Renewable * Insurance Services Our specialised industry and sector specific consultants are able to offer a personalised experience to fit your needs. Our unique associate consultativ... Know more