Senior QA Engineer

BidMachine; Barcelona; On-site; EUR 35,000 - 50,000; Full time

Job summary

A leading programmatic advertising company in Barcelona is looking for a QA Engineer to ensure the quality of mobile ad formats through rigorous testing and validation. The role involves comprehensive testing of mobile ads and SDKs, collaborating closely with ad operations and product teams. Candidates must have 3+ years of experience in software quality assurance, solid understanding of testing methodologies, and excellent problem-solving skills. This position offers a unique opportunity to impact the dynamic field of mobile advertising.

Qualifications

• 3+ years of experience in software quality assurance, preferably in gamedev or AdTech.
• Strong understanding of software development life cycle (SDLC) and testing methodologies.
• Test Automation experience is a huge plus.
• Excellent analytical and problem-solving skills.
• Strong attention to detail and ability to handle multiple tasks simultaneously.
• Ability to quickly adapt to changing business requirements and ability to multitask.
• Excellent communication and collaboration skills.

Responsibilities

• Conduct comprehensive testing of mobile ad formats to ensure correct display and functionality.
• Verify the correct integration of ad SDKs in mobile apps.
• Test and validate analytics and tracking events.
• Ensure ads perform consistently across various devices and platforms.
• Perform manual and automated testing of mobile SDKs.
• Document and collaborate on issues using issue-tracking tools.
• Conduct regular regression testing for ad-related features.
• Work closely with ad operations and product teams.

Skills

End-to-End Mobile Ad Testing

Ad Integration Validation

Tracking and Analytics Verification

Cross-Device Testing

SDK Testing

Bug Reporting and Tracking

Regression Testing

Collaboration with Ad Operations

Education

3+ years of experience in software quality assurance

Tools

Jira

TestRail

Google Analytics

Postman

Git

Job description

BidMachine Exchange

BidMachine Exchange – a fast‑growing global programmatic exchange built for the future of in‑app advertising.

As part of the Appodeal ecosystem, BidMachine operates with a strong US foundation and an international presence, with teams across Warsaw, Barcelona, Parkland (FL), and remote experts around the world.

We combine deep AdTech expertise, proprietary technology, and a data‑driven mindset to deliver transparency, performance, and efficiency in the mobile advertising ecosystem.

Why BidMachine?

At BidMachine, we are building more than an exchange — we are shaping the infrastructure that powers fair, efficient, and scalable in‑app programmatic advertising.

Our mission is to create a high‑performance marketplace where publishers maximize value and advertisers access premium inventory with full transparency and control.

We are proud of our technology, our ambitious vision, and our globally distributed team of talented professionals who continuously raise the bar in AdTech.

Here’s what we value, and what we hope you do too:

• Ownership & Accountability: We move fast, take responsibility, and think like builders. Every team member has a direct impact on product growth and market success.
• Data‑Informed Excellence: We leverage data to make smarter decisions, optimize performance, and build scalable solutions that deliver measurable results.
• Innovation & Technical Depth: We solve complex programmatic challenges with cutting‑edge technology and a deep understanding of the ecosystem.
• Global Collaboration: We work across cultures, time zones, and disciplines — united by shared goals and high standards.
• Ambition & Impact: We are here to build something significant — a best‑in‑class exchange that competes with the strongest players in the market.

QA Engineer – Barcelona

Responsibilities:

• End‑to‑End Mobile Ad Testing: Conduct comprehensive testing of mobile ad formats (banner ads, interstitials, rewarded video ads, native ads) to ensure correct display, functionality, and user experience across multiple devices and OS versions.
• Ad Integration Validation: Verify the correct integration of ad SDKs in mobile apps, ensuring compliance with ad network specifications and proper ad rendering.
• Tracking and Analytics Verification: Test and validate that analytics and tracking events are correctly implemented, ensuring that ad performance data is accurately captured (e.g., impressions, clicks, conversions).
• Cross‑Device and Platform Testing: Ensure that ads are rendered and performed consistently across various mobile devices, screen sizes, operating systems (iOS/Android), and environments.
• SDK Testing: Perform manual and automated testing of mobile SDKs used for ad integrations, ensuring they function properly and integrate well with mobile applications.
• Bug Reporting and Tracking: Document issues, inconsistencies, and bugs related to ad display, tracking, and interaction using issue‑tracking tools (Jira, TestRail, etc.) and collaborate with the development team for timely resolution.
• Regression Testing: Conduct regular regression testing for ad‑related features following SDK updates, new releases, or modifications in the ad‑serving framework.
• Collaboration with Ad Operations: Work closely with the ad operations and product teams to understand campaign requirements and ensure proper ad functionality and tracking throughout the mobile app lifecycle.

Technology Stack:

• Mobile Testing: Android, iOS, mobile app testing tools.
• Ad Testing: Testing of mobile ads (banner, interstitial, video ads), ad network integrations, debugging ad rendering and tracking.
• Analytics Testing: Event tracking validation, experience with mobile analytics platforms (Google Analytics, Firebase, Adjust, AppsFlyer).
• SDK Testing: Experience testing Software Development Kits (SDKs), integration testing, API testing, and verifying SDK behavior across different environments.
• API Testing: Postman, REST API testing, validating data exchange between systems.
• Bug Tracking and Test Management Tools: Jira, TestRail, or similar tools for defect tracking and test management.
• Agile Methodologies: Experience working in Agile/Scrum teams, participating in sprint planning and backlog grooming.
• Version Control: Git or other version control systems.

Qualifications:

• 3+ years of experience in software quality assurance, preferably in a gamedev, AdTech.
• Strong understanding of software development life cycle (SDLC) and testing methodologies.
• Test Automation experience is a huge plus.
• Excellent analytical and problem‑solving skills.
• Strong attention to detail and ability to handle multiple tasks simultaneously.
• Ability to quickly adapt to changing business requirements and ability to multitask.
• Excellent communication and collaboration skills, with the ability to work effectively in a cross‑functional team environment.

With a powerful product, strong market positioning, and a team that strives for excellence, BidMachine offers a unique opportunity to grow, innovate, and make a tangible impact in the programmatic advertising space.

Build the future of mobile AdTech with us!