Mobile Engineering Lead

About SERHANT. 

SERHANT. is the most followed real estate brand in the world, calibrated for the marketplace of tomorrow, delivering proven results for buyers, sellers, and developers. SERHANT. revolutionizes the traditional brokerage model by innovating through media and content creation and is powered by a full-service in-house film studio as well as an amplification platform that puts our properties in front of more people than anyone else. 

 

About the Role 

We’re hiring a Mobile Engineering Lead to own the technical direction of our mobile applications. You’ll balance hands-on development with leadership—setting standards, mentoring engineers, and shipping polished experiences across iOS and Android. You approach mobile development as a craft, and you use every tool available—including AI—to elevate your team’s output. 

 

Our Stack 

• Mobile Framework: Expo (React Native) 

• Primary Database: Postgres 

• Languages: TypeScript, Python (backend services) 

• Infrastructure: Azure, event-driven architecture 

 

Responsibilities 

• Lead mobile engineering efforts across iOS and Android using Expo 

• Define technical architecture and establish patterns that scale within the Expo ecosystem 

• Write and enforce specifications for features before implementation begins 

• Ship high-quality code yourself while elevating the engineers around you 

• Integrate AI-assisted development practices into the team’s workflow 

• Collaborate closely with product, design, and backend teams to deliver cohesive experiences 

• Own mobile release processes, performance, and reliability 

• Drive adoption of Expo’s latest capabilities (EAS, dev builds, config plugins) 

• *The company reserves the right to add or change duties at any time. 

 

Qualifications 

• 6+ years of mobile development experience with at least 2 years in a leadership capacity 

• Deep expertise with Expo and React Native - you know when to use managed workflow vs. dev builds, how to optimize bundle size, and how to debug native issues 

• Strong TypeScript proficiency 

• Experience integrating mobile apps with Postgres-backed APIs 

• Track record of shipping consumer-facing mobile applications at scale 

• Daily use of AI coding tools to accelerate development and code review 

• Familiarity with frontier LLMs and practical experience integrating them into your work 

• Strong opinions on spec-driven development - you believe clarity upfront prevents chaos later 

• Experience building mobile apps with real-time features 

• Background in CI/CD for mobile, feature flagging, and phased rollouts (EAS Update, EAS Build) 

• Eye for design and user experience 

• Native iOS (Swift) or Android (Kotlin) experience for edge cases requiring native modules 

 

Skills 

• Relentlessly curious - you dig into new tools and technologies before they have comprehensive documentation 

• High agency - you don’t wait for permission or detailed instructions; you figure things out and drive forward 

• Comfortable with ambiguity - you can pick up bleeding-edge LLM tools and make them productive without hand-holding 

• Self-directed - you identify what needs to be done and do it