Senior Software Engineer (Full Stack | React Native Expert)

Lumida Wealth; Karachi Division; On-site; PKR 3,000,000 - 5,400,000; Full time

Job summary

Lumida Wealth is seeking a High-Intensity Senior Full Stack Engineer with a React Native DNA to architect our mobile edge. You will own architecture for the RN ecosystem, push for offline-first capabilities, and optimize data synchronization for a 6-inch screen.

You’ll bridge Python backends (FastAPI/Django) with a mobile-first mindset, optimize APIs for low payloads, and ensure native-like performance through careful state management and code governance.

Qualifications

• 5–10 years of professional engineering. You have shipped and maintained at least one high-traffic React Native app.
• Mobile Architect mindset prioritizes reliability and safety over hacks.
• Experience with RN stack and mobile release processes.

Responsibilities

• Lead the architecture of the React Native ecosystem with offline-first patterns and real-time data sync.
• Bridge frontend with Python (FastAPI/Django) backends, optimizing APIs for mobile efficiency.
• Own performance engineering: fix render bottlenecks, memory leaks, and bridge traffic.
• Enforce code governance with linting, TypeScript, and automated tests (Detox/Jest).
• Design interfaces for AI stock agents to deliver instant responses on small screens.
• Oversee Native Modules (Swift/Kotlin) when needed to meet performance targets.

Skills

High-Intensity mindset

Shipping track record

Technical leadership

Education

CS degree

GPA 3.7+

Tools

React Native

TypeScript

React Navigation

Reanimated

Python

FastAPI/Django

PostgreSQL

Redis

App Store Connect

Play Console

Fastlane

Job description

Senior Software Engineer (Full Stack | React Native Expert)

Location: Karachi (Hybrid)

Employment Type: Full-time

About Lumida

Lumida is a venture-backed, AI-native wealth advisor for modern investors seeking institutional-caliber access across public markets, private deals, and alternative investments.

Backed by investors and board leaders from companies including SoFi, Circle, and Coinbase, Lumida brings venture-scale ambition to an industry overdue for reinvention.

As a client’s Wealth Architect, Lumida integrates investment management, trust and estate planning, tax mitigation, and differentiated opportunities into one coordinated wealth strategy.

Our clients are founders, builders, and independent thinkers. We built Lumida with the same mindset: curious, original, and unwilling to accept the conventional.

We help clients build, protect, and transfer wealth — and 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.