Senior/Lead iOS Developer, Zalo

Tips: Provide a summary of the role, what success in the position looks like, and how this role fits into the organization overall.

Responsibilities

• Lead iOS technical direction and own architecture decisions (clean architecture, modularization, MVC/MVVM,..);

• Design and develop high-quality, scalable features while managing technical debt strategically;

• Plan sprints, assign tasks, support estimation, and review requirements with Product team;

• Conduct code reviews and enforce coding standards to ensure quality and consistency;

• Mentor junior and senior developers on coding practices, design patterns, and problem-solving;

• Lead knowledge-sharing sessions and build a culture of continuous learning;

• Act as primary liaison between iOS, Product, Backend, QA, and Design teams;

• Evaluate and adopt new technologies to improve build time, CI/CD, and development efficiency;

• Drive performance optimization initiatives (startup time, memory, rendering, battery/network usage);

• Monitor and resolve crash issues to ensure app reliability and security.

Qualifications

• 3-5+ years of iOS development with Objective-C and Swift;

• (For Lead) 2+ years in technical leadership role (Tech Lead, Senior/Lead Developer);

• Solid understanding of OOP principles, design patterns, and data structures;

• Deep expertise in modern architecture patterns (MVC, MVVM, Clean Architecture) and modularization;

• Strong knowledge of iOS internals: lifecycle, memory management, networking, concurrency, Grand Central Dispatch;

• Proficiency with iOS frameworks (UIKit, SwiftUI, Combine) and reactive programming (Combine, RxSwift);

• Strong knowledge of dependency injection patterns and iOS design principles;

• Proven experience in performance optimization: crash resolution, memory leaks, startup time, battery/network usage;

• Excellent communication and cross-functional collaboration skills;

• Experience in leading and mentoring team members with focus on their career growth and skill development;

• Strong sense of ownership, open-mindedness, and passion for continuous learning;

• Team player who can work both independently and collaboratively.