Pb Company Description /b /pp Atomic Spain is the European tech and data hub of b Atomic Growth /b, a global AI-driven e-commerce and SaaS platform automating Amazon store management at scale. Our team builds autonomous agents that optimize pricing, advertising, inventory, and operations - powered by real-time data from hundreds of active storefronts. /p pb Role Description /b /p p We are looking for a meticulous QA Engineer based in Malaga, Spain to join our distributed engineering team. You will play a critical role in ensuring that when our customers look at their profit margins or ad spend, the numbers are 100% accurate, when an ai agent issues a recommendation it#39;s valid based on its available data. /p p You won’t just be testing if a button works, you will be testing business logic. You will verify that our data pipelines, financial calculations, and ad-attribution models are correct. You will work closely with Product Managers and Developers to ensure our analytics dashboards are reliable and fast. /p pb Key responsibilities /b /p ullib Test Planning Execution: /b Design, implement, and execute test plans for our web application, focusing on Data Integrity, Model predictions, Agent recommendations etc… /li /ul ullib Data Validation: /b Compare our data with external sources (Seller platforms, 3rd party SaaS etc…) making sure it is coherent /li /ul ullib Logic Verification: /b Manually and automatically test complex mathematical formulas (e.g., Gross Profit, ROAS, TACoS) to ensure accurate PL reporting. /li /ul ullib Automation: /b Contribute to our automated testing framework (Github Actions/Playwright/Selenium) to cover critical regression paths. /li /ul ullib Bug Hunting: /b Identify, record, and track bugs using Jira. Prioritize issues based on impact on financial accuracy and user experience. /li /ul ullib Cross-Functional Work: /b Collaborate with an international team of developers to reproduce issues related to time zones, currency conversions, and large datasets. /li /ul pb Requirements /b /p ullib Experience: /b 3+ years of experience in Software Quality Assurance (Web SaaS). /li /ul ullib Data Proficiency: /b Strong knowledge of b SQL /b. You must be comfortable querying databases to validate test results (e.g., checking if the em Profit /em calculation matches the em Revenue minus Expenses /em in the DB). /li /ul ullib Technical Stack: /b Experience with API testing (Postman, REST) and familiarity with CI/CD pipelines (Jenkins, GitHub Actions). /li /ul ullib Automation Basics: /b Experience writing or maintaining automated scripts (JavaScript/TypeScript or Python preferred). /li /ul ullib Language: /b Fluent in b English /b. We are an international company, and all documentation/meetings are in English. /li /ul ullib Mindset: /b Extreme attention to detail. A rounding error in our software costs our clients money. /li /ul pb Nice to have /b /p ullib Domain Knowledge: /b Experience working with b Amazon Seller Central /b, b Amazon SP-API /b, or generally in the E-commerce/AdTech space. /li /ul ullib Financial/Ad Experience: /b Understanding of concepts like PPC, CPC, ACOS, VAT, and COGS (Cost of Goods Sold). /li /ul ullib Math/Stats Background: /b A degree or background in mathematics, statistics, or finance is a huge plus. /li /ul