Alex Lykesas — Senior iOS Engineer Portfolio

Contributed to a secure SwiftUI-native platform centered around encrypted real-time communication and community engagement. The application integrated Matrix SDK-based end-to-end encrypted chat, curated content experiences, and a flexible navigation architecture designed to support scalable feature growth.

Modernized the app’s concurrency architecture using Swift actors while optimizing memory consumption through Instruments profiling. Also implemented CI/CD workflows with GitHub Actions and automated testing pipelines, improving development velocity and overall platform stability for thousands of users.

Architected and developed an offline-first enterprise platform used by distributed field teams operating in low-connectivity environments. The system included geofencing, offline chat, secure authentication flows, and real-time synchronization to ensure uninterrupted workflows during field operations.

Built lead routing, proximity-based notifications, KPI tracking, and scheduling systems that replaced manual operational processes and improved visibility across thousands of field users. The project focused heavily on reliability, data consistency, and scalable mobile architecture.

Implemented anti-tampering measures including jailbreak detection and biometric authentication with auto-lockout, ensuring the app met enterprise security standards. The application successfully passed third-party penetration testing.

Worked as a core contributor within the Messaging Team, leading the implementation of scalable real-time chat systems inside a healthcare platform serving millions of users. Built and maintained messaging features using MVVM-C, Combine, WebSockets, dependency injection, and modern testing practices with a strong focus on accessibility and reliability.

Contributed to platform-wide SDK improvements and helped stabilize critical design system components used across multiple applications. The role also involved performance-focused engineering, cross-team collaboration, and architectural decision-making within a large-scale production environment.

Contributed to a platform serving 5M+ students and teachers, enhancing timetable management and absence tracking with robust offline persistence. The work centered on synchronization reliability and delivering consistent functionality across school environments with limited connectivity.

Modernized the codebase by migrating dependencies to Swift Package Manager, introducing SwiftLint, and improving CI/CD automation pipelines with Bitrise. Worked closely with product stakeholders to continuously deliver new features while improving maintainability and development workflows.

Led iOS development across multiple client applications ranging from enterprise tools to customer-facing mobile products. Worked across the full application lifecycle, from architecture and feature planning to App Store delivery, while helping scale applications supporting thousands of active users.

Mentored developers, established engineering best practices, and collaborated closely with business stakeholders to improve delivery alignment and technical decision-making. The role played a key part in shaping long-term engineering processes and team growth.