Senior Software Engineer (Full Stack | React Native Expert)

Senior Software Engineer (Full Stack \| React Native Expert) Location: Karachi (Hybrid) Employment Type: Full\-time **About Lumida** Lumida is a digital\-first wealth advisor for people who want access to the same opportunities as institutions — public markets, private deals, and alternatives. Our mission is to transform wealth management by combining investment excellence with best\-in\-class trust and estate planning in a modern, tech\-first experience. Our team shares the same mindset as our clients — curious, original, and driven to build what doesn’t yet exist. Recognized for our differentiated, non\-consensus insights, Lumida is reshaping how modern investors build and enabling clients to invest beyond the ordinary. The Role: Architecting the Mobile Edge We are looking for a High\-Intensity Full Stack Engineer with a React Native DNA. You understand that mobile engineering is a game of constraints—memory, CPU, and bridge latency. You are the type of engineer who hates jank, obsesses over 60 FPS animations, and understands that "frontend" extends into how the API is structured for mobile consumption. You aren't just building screens; you are building the standards that ensure our mobile performance never degrades. Key Responsibilities * Mobile Orchestration: Lead the architecture of our React Native ecosystem. Implement patterns for robust offline\-first capabilities, complex state persistence, and real\-time data synchronization. * Full Stack Ownership: Bridge the gap by designing and optimizing Python (FastAPI/Django) backend services. You ensure that APIs are tailored for mobile efficiency (minimized payloads, efficient polling, and WebSocket integration). * Performance Engineering: Own the "Frame Budget." You are responsible for identifying and fixing render bottlenecks, memory leaks, and excessive bridge traffic. You ensure the app feels "Native" at all times. * Code Governance: Act as the final line of defense in code reviews. Establish strict linting, TypeScript patterns, and automated testing (Detox/Jest) to prevent technical debt from entering the mobile codebase. * Agentic AI Integration: Architect seamless mobile interfaces for interacting with AI stock agents, ensuring complex data science looks simple and responds instantly on a 6\-inch screen. * Native Integration: Oversee or implement Native Modules (Swift/Kotlin) when the JavaScript bridge isn't enough to meet our performance standards. Ideal Candidate Profile * Experience: 5–10 years of professional engineering. You must have shipped and maintained at least one high\-traffic, complex React Native app from 0 to 1 in the App Store/Play Store. * The "Mobile Architect" Mindset: You don't just "write code"—you think about battery life, background tasks, and atomic state updates. You prioritize Reliability and Type Safety over quick\-and\-dirty hacks. * Technical Stack: + Expert: React Native, TypeScript, React Navigation, and Reanimated. + Solid: Python (FastAPI/Django), PostgreSQL, and caching strategies (Redis). + Infrastructure: Deep understanding of the mobile release cycle (App Store Connect, Play Console, Fastlane). * Academic Excellence: Degree in CS from a top\-tier university (GPA 3\.7\+ preferred). * High Intensity: You have a track record of shipping. You treat the company’s product quality as a personal reflection of your craft. Why Lumida? * High\-Intensity Environment: We move fast, but we value the craft of mobile engineering. * Complex Problem Solving: You’ll be translating institutional\-grade stock market analytics into intuitive mobile interactions. * Ownership: We want partners, not employees. You will have a seat at the table in defining our technical roadmap for the Karachi engineering hub.