Senior Mobile SDK Engineer

Description MWDN is a global IT outstaffing company with 23+ years of experience that connects exceptional tech talent with leading companies across Israel, the USA, Great Britain, and Western Europe. We offer opportunities to work on international products in a stable and professional environment. Why does MWDN rock? Here’s what you can expect when you join MWDN: Security: We carefully vet our clients to minimize risks and ensure reliability and timely payments - no fraud or unpleasant surprises. Career support: If a project isn’t the right fit, we support you and actively help find new opportunities that match your skills and career goals. Legal assistance: We provide guidance on legal matters, including opening and managing your independent contractor or sole proprietorship status, taxes, and related processes. Professional development: We offer English courses and professional growth opportunities, as well as team-building events. Why choose us? MWDN is ranked among the top 5 IT employers in our region according to DOU. We take pride in our transparency and strong commitment to our team. Curious to learn more? See what our employees say about working with us on DOU . What is your new project? Domain: Gaming Location: US/Israel Company size: 11-50 employees Founded in: 2025 What makes this project exciting? Our client is building a groundbreaking loyalty platform for mobile gamers, and we're seeking passionate individuals to form the foundation of the engineering team. Product mission is to empower gamers with a new way to discover games, connect with their friends, and earn fantastic rewards. Joining us, you will get to build the highest quality consumer app in one of the hottest domains in the gaming industry, and make real measurable business impact. With tens of thousands of daily active users and over a hundred games on clients platform, there are growing fast. Join us and let's open a whole new market together. What makes you a great fit 5+ years of professional software development experience. Strong hands-on experience developing mobile SDKs used within Unity applications. 3+ years of relevant Unity SDK development experience. 2+ years of native mobile development. Strong understanding of Unity and the integration between Unity/C# and native mobile code. Professional experience with native Android development using Kotlin. Professional experience with native iOS development using Swift. Understanding of mobile application lifecycles, performance considerations, threading, and debugging. Previous experience leading or taking substantial ownership of an SDK initiative is highly preferred. Strong communication skills and the ability to explain technical decisions clearly. High level of ownership, internal motivation, and ability to work independently. Your day-to-day in this position Design and develop a reliable SDK for integration into Unity-based mobile games and applications. Build and maintain native SDK components for iOS and Android, together with the Unity integration layer. Define the SDK architecture, public APIs, integration patterns, and communication between Unity and native mobile components. Own the SDK lifecycle from initial design and implementation through packaging, release, monitoring, and ongoing support. Ensure compatibility across Unity versions, iOS and Android versions, devices, and customer environments. Collaborate with the Mobile Lead and other engineers on technical decisions and implementation. Proactively identify technical risks and recommend practical solutions without requiring close supervision. Why work with us? People-first management with minimal bureaucracy A friendly company culture, proven by employees who choose to return Flexible working hours 29 days of PTO (18 working days per year pluse all national holidays) 10 paid recovery days Full financial and legal support for independent contractors Free English classes, with native speakers or Ukrainian teachers Dedicated HR support Our next steps ✅ Intro call with a Recruiter— ✅ Intro call with client — ✅ Home Assignment — ✅ Technical interview — ✅ Offer