Senior SDK Engineer
Massive is a fast-growing technology company. We’re building a global team of talented, driven people who want to make an impact in a fast-paced and innovative environment. Join us and help shape the future of data and connectivity.
Some roles let you pick one platform. This one lets you own them all.
Massive is a fast-growing proxy and AI data infrastructure company. Our Monetization SDK powers millions of users across desktop, mobile, and smart TV — and we're looking for a Senior SDK Engineer to own it.
This isn't a ticket-driven maintenance role. You'll make real architectural decisions, ship across four platforms, and directly impact how millions of users experience our core product. Small team, high ownership, no layers between you and the work that matters.
What You'll Do:
✔ Maintain and enhance our existing SDKs across Android/FireOS (Kotlin), Tizen/WebOS (JavaScript), Windows (C++), and iOS (Swift).
✔ Develop new features and capabilities based on business requirements and partner feedback.
✔ Collaborate with backend, infrastructure, and product teams to improve SDK performance, reliability, and user experience.
✔ Research and implement optimizations to minimize resource consumption while maximizing efficiency.
✔ Design and implement robust testing strategies for multi-platform SDK releases.
✔ Create and maintain comprehensive documentation for internal teams and external partners.
✔ Investigate and resolve complex platform-specific issues across different operating systems and devices.
✔ Drive architectural decisions for SDK design patterns and cross-platform compatibility.
What We're Looking For:
✔ 4+ years of experience in software engineering with a focus on SDK or library development.
✔ Proficiency in at least one primary language: Kotlin (strongly preferred), JavaScript, or C++ — with willingness to learn others.
✔ Experience with mobile and/or TV platform development.
✔ Strong understanding of memory management, threading, and performance optimization across platforms.
✔ Experience with SDK distribution mechanisms (package managers, build systems, dependency management).
✔ Strong debugging and troubleshooting skills across multiple environments.
✔ Self-directed and comfortable working in a fast-paced startup environment.
We’re serious about excellence and impact. If you are too, apply now.
Why join Massive?
Fully Remote
You work best when you work where you want. We support a fully remote team so you can live and work where is best for you.
Work from Home Stipend
Being a fully remote team, we want to ensure your home office is comfortable. We provide a $500 WFH stipend to get your space upgraded!
Unlimited Vacation
Take the time you need: relax, rest and recover! We want our team working at their best so take the days you need.
Health Insurance
Our team is our most valuable resource so we do our part in helping cover health insurance for all team members. We offer different benefits based on if you are located in the USA or International.
Health & Wellness Benefit
We care about your well-being. Every team member receives $50 per month toward health and wellness, whether it’s for fitness, mindfulness, or self-care.
Continuous Learning
We believe in always growing. That’s why we provide $50 per month toward education — online courses, books, or workshops to keep your skills sharp.
Access to Cutting-Edge Tools
As part of our mission, you’ll have access to the latest AI and technology tools, helping you stay ahead and do your best work.
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