-5+ years work experience as a professional Software Engineer. -3+ years of experience as an Android developer using Kotlin or Java. -Proficiency in OOP, MVC, Service integration (REST / SOAP), SQLite -Experience in designing products that served millions of users is a plus -Experience in White-labeling / Localization / Modularization is a plus -Experience in encryption / network security is a plus -Hands-on experience in Scrum and/or other Agile development methodology