QA Engineer

3 Months ago • 3 Years + • Quality Assurance

Job Summary

Job Description

adjoe is redefining the future of mobile ads with advanced AI and a focus on app publishers. The Advertising Solutions team builds technologies connecting advertisers with users, handling over 2 billion requests daily with low latency. This involves developing advertising campaign management and complex analytics tools for daily users, utilizing Go for the backend and TypeScript React for the frontend. They work with databases like Druid, MySQL, Redis, DynamoDB, and Kafka, implementing advanced algorithms for campaign distribution and bid optimization. The role focuses on testing complex backend systems with multiple services, including containerized apps and messaging systems, ensuring high performance and quality throughout the software development lifecycle.
Must have:
  • 3+ years as QA Engineer
  • Backend systems testing experience
  • Containerized apps (Docker) experience
  • Databases (MySQL, Redis, DynamoDB) experience
  • Messaging systems (SQS, Kafka) experience
  • Automation testing tools (RestAssured) experience
  • Experience working closely with engineers
  • Familiar with QA methodology and Agile
  • Excellent communication & organizational skills
  • Analytical and problem-solving attitude
Good to have:
  • Regression/smoke testing experience
  • Error documentation and troubleshooting
  • Test case preparation and maintenance
Perks:
  • Regular feedback and development program
  • Visa assistance
  • Relocation bonus
  • Hybrid work setup (3 core office days)
  • Flexible working hours
  • 30 vacation days
  • 3 weeks remote work per year
  • In-house gym with fitness classes
  • Mental health support (EAP)
  • Central office with Alster Lake view
  • Top-notch equipment
  • Fun open spaces
  • Variety of snacks and drinks
  • Regular team and company events

Job Details

adjoe is redefining the future of mobile ads. Powered by advanced AI, first-party data and world-class engineers, we’ve perfected the offerwall experience for monetizing and scaling app publishers with solutions like Playtime and Arcade – now the fastest growing rewarded advertising channel globally – driving incremental engagement, retention, and revenue. At the same time, we’re breaking into programmatic advertising with the intelligent bidding system of adjoe Ads. Together, this ecosystem connects app developers to over 600 million users worldwide for scalable growth. Backed by a $100 million investment from Bertelsmann and operating from offices in Hamburg, Boston, Singapore, and Tokyo, adjoe is defining the next stages of app and ad experience – right now. Join us.

Meet Your Team: Advertising Solutions

The Advertising Solutions team builds technologies that connect advertisers with ideal users for their apps and games. Integrated with adjoe’s ML models, our custom APIs serve 2B requests per day at low latency.

We've developed advertising campaign management and complex analytics tools that provide actionable insights on 200 million daily users to both internal teams and external partners. Our Go-based backend feeds data to a TypeScript React frontend, supporting sophisticated analysis tools built on columnar databases like Druid for sub-millisecond query response times, complemented by MySQL, Redis, DynamoDB, and Kafka.

For developers, this means working on high-performance systems that process massive datasets while maintaining an agile development approach – implementing advanced algorithms through deep learning approaches for campaign distribution and bid optimization, building intuitive dashboards, and creating APIs that power business decisions across the entire advertising ecosystem.

Who You Are

    • You have 3+ years of experience as a Quality Assurance Engineer with focus on complex backends testing.
    • You have experience in testing complex backend systems with multiple services: you have worked containerized apps (Docker), databases (e.g. MySQL, Redis, DynamoDB), or messaging systems (e.g. SQS, Kafka or similar).
    • You have hands-on experience with Automation Testing Tools (e.g. RestAssured)
    • You have experience in working closely with engineers (investigating how the system works and discussing feature requirements).
    • You are experienced in QA methodology, and familiar with Agile frameworks and regression/smoke
    • You are able to document and troubleshoot errors as well as prepare, document, and maintain test cases.
    • You have excellent communication & organizational skills and pay attention to details.
    • You have an analytical mind and problem-solving attitude.

What You Will Do

    • Work in a cross-functional team to achieve the highest level of quality across the software development lifecycle.
    • Conduct manual and automated tests of our product and analyze results to ensure the correct implementation of its features and experiments.
    • Take initiative in building quality into the product, by actively participating in features development with the team
    • Play a key role in reporting, troubleshooting, and retesting any bugs or errors that may occur.
    • Take ownership of post-release and post-implementation monitoring. 
    • Be part of an international English-speaking team dedicated to scaling our adtech platform beyond our hundreds of millions of monthly active users.

Fuel for the Journey: Benefits to Support Your Ambitions

    • Invest in Your Future: Regular feedback and our development program support your growth, helping you expand your skill set and achieve your career goals.
    • Easy Arrival to adjoe: From signing to settling in Hamburg, we’ve got you covered. Need a visa? No problem. Ready to build your new life and career at adjoe in Hamburg? We support every ambition—from learning German to a relocation bonus that helps you settle in and make Hamburg feel like home.
    • Live Your Best Life, at Work and Beyond: We work in a hybrid setup with 3 core office days, plus flexible working hours. Enjoy 30 vacation days, 3 weeks of remote work per year, and free access to an in-house gym with lots of different fitness classes and mental health support through our Employee Assistance Program (EAP).
    • Thrive Where You Work: Enjoy the Alster Lake view from our central office with top-notch equipment, fun open spaces, and a large variety of snacks and drinks.
    • Join the Community! Participate in regular team and company events, including hackathons and social gatherings. We work together, and we celebrate together, too.

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About The Company

Hamburg, Hamburg, Germany (Hybrid)

Hamburg, Hamburg, Germany (On-Site)

Hamburg, Hamburg, Germany (Hybrid)

Hamburg, Hamburg, Germany (Hybrid)

Hamburg, Hamburg, Germany (Hybrid)

Hamburg, Hamburg, Germany (Hybrid)

Hamburg, Hamburg, Germany (Hybrid)

Hamburg, Hamburg, Germany (Hybrid)

Hamburg, Hamburg, Germany (Hybrid)

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