Refinery89 is looking for a passionate and experienced Senior Mobile Developer to join our fast-growing Mobile team. If you’re excited about building scalable SDKs, integrating cutting-edge monetization tools, and helping shape the future of mobile AdTech — we’d love to meet you.
What You’ll Do:
* Design, build, and maintain high-performance mobile SDKs for Android, iOS, and Unity environments.
* Lead the integration of mediation platforms like Google AdMob, IronSource, and others to ensure top-tier monetization performance.
* Work hands-on with Prebid Server to implement both client-side and server-side bidding solutions.
* Ensure SDK scalability, stability, and performance across platforms through rigorous testing and optimization.
* Collaborate closely with Product, AdOps, and Data teams to unlock revenue opportunities and fine-tune yield strategies.
* Contribute to internal documentation, code reviews, and the continuous improvement of development practices.
* Leverage GAM360 and other programmatic platforms to drive efficient ad delivery and revenue growth.
* Stay current with emerging mobile AdTech trends and propose solutions that keep our SDKs ahead of the curve.
Who We’re Looking For:
* Experienced Mobile Builder: 5+ years in mobile development with deep experience in Kotlin (Android), Swift (iOS), and Unity.
* AdTech Native: Strong understanding of ad mediation, monetization strategies, and RTB environments.
* SDK Specialist: Proven track record building and maintaining mobile SDKs at scale.
* Prebid & Mediation Know-How: Hands-on experience with Prebid Server, AdMob, and/or IronSource.
* Collaborative Developer: Comfortable working across teams and aligning technical solutions with business objectives.
* Detail-Oriented Engineer: Clean code, strong documentation habits, and scalable design thinking.
Nice-to-Haves:
* Experience with hybrid frameworks like React Native or Flutter.
* Familiarity with analytics tools (e.g., Firebase, AppsFlyer, Adjust).
* Exposure to CI/CD processes and mobile deployment pipelines.
* Contributions to open-source projects or developer communities.
What You Can Expect from Us:
* Competitive salary package based on experience and seniority.
* Remote-first role with flexibility — work from anywhere.
* Bonus structure tied to performance and impact.
* Ownership and autonomy in building key products used across mobile platforms.
* A feedback-driven, flat, and fast-paced team culture.
* 24 holidays per year, your own equipment, and Friday half-days.
* Annual team retreat and ongoing learning & development support.
Ready to build the future of mobile AdTech with us?
Apply today and help us shape the next generation of monetization technologies!