Khachatur Hakobyan · Resume

KSF Technologies AG | Senior iOS Engineer · RemoteNov 2021 – Present

• Re-architected the authentication and login system using OOP, POP, SOLID principles, and SOA, eliminating design anti-patterns and establishing a modular, testable architecture that reduced authentication-related defects by 40%, doubled feature delivery speed (2×), and improved release reliability.
• Designed and developed a reusable Core SDK integrating Keychain, Core Data, application settings, and dialog services, reducing code duplication by 60%, shortening development cycles by weeks, and accelerating cross-team delivery through standardized infrastructure.
• Contributed to Sony Music Artist Portal, Sony Music Studio, Sony Music GTA, and Optiqo INSTA, developing custom interactive financial charts, shared application components, and native Core NFC inspection functionality while modernizing Swift and Objective-C codebases.

Crypmoji | iOS Team Lead (Senior iOS Engineer) · On-siteFeb 2021 – Nov 2021

• Defined and aligned the engineering team on 3 technical delivery strategies—simulation, full integration, and phased MVP—delivering a live encrypted messaging demo in 4 days, expanding functionality within approximately 6 days, and directly contributing to a reported $500K seed-funding outcome and 3 investor follow-up meetings.
• Diagnosed and resolved a year-long Swift–C++ interoperability and memory-management defect by correcting unsafe object ownership and pointer handling, avoiding a complete system rewrite and saving an estimated 1–2 years of engineering effort while restoring application reliability.
• Led a modular Swift modernization and custom iOS keyboard extension, mentoring 2 junior iOS engineers in SOLID principles, POP, clean architecture, code reviews, and cross-language integration while strengthening engineering collaboration and team culture.

WiredMates | iOS Team Lead (Senior iOS Engineer) · On-siteMar 2020 – Feb 2021

• Architected a reusable storyboard-based iOS UI framework using UIKit, IBDesignable, and IBInspectable, reducing adaptive screen development time by 70% (10 to 3 hours) and improving UI delivery efficiency by over 200% (approximately 3.3× faster).
• Engineered secure payment integrations with Stripe and Apple Pay, reducing checkout time by 70% through optimized payment flows and encryption while improving the application's purchasing experience.
• Mentored junior iOS engineers in SOLID principles, reusable components, and code reviews; introduced standardized pull request practices adopted within approximately 1 month, improving collaboration, code quality, and architectural consistency.

Xamlab | iOS Team Lead (Senior iOS Engineer) · On-siteJan 2019 – Mar 2020

• Architected and led modernization from Xamarin/C# to native Swift, implementing modular MVVM architecture, POP, and automated unit testing, achieving 98% test coverage and improving maintainability and scalability.
• Redesigned ticket validation into a streamlined QR scanning workflow, accelerating ticket validation by 5–6× and reducing errors by over 90%, contributing to a reported historical 5.0 App Store rating.
• Established CI/CD pipelines with Azure DevOps, standardized pull request reviews, and mentored junior engineers in clean architecture, automated testing, and reusable components, improving release reliability and cross-team delivery.

Arm-BoldMind | iOS Engineer → iOS Team Lead (Promoted) · HybridJan 2017 – Jan 2019

• Engineered and delivered 6+ iOS applications using Swift, Objective-C, UIKit, MVC/VIPER architectural patterns, Core Data, and real-time socket communication, developing scalable applications across education, ecommerce, delivery, and marketplace platforms.
• Collaborated with multiple engineering teams across 2–3 concurrent projects, strengthening reliability through root cause analysis, crash debugging, and code refactoring; subsequently earned promotion from iOS Engineer to iOS Team Lead.
• Led iOS architecture and independently developed PropertyTrader and Edy, while introducing reusable components and backend-driven UI configuration across client projects; mentored engineers in maintainable application architecture and development practices.

PicsArt Armenia | iOS Engineer · On-siteMar 2016 – Jan 2017

• Strengthened advanced iOS engineering expertise over 11 months through hands-on defect resolution, root cause analysis, crash debugging, and performance optimization within a large-scale photo-editing application.
• Completed 6 months of intensive specialization in Objective-C and image processing, applying memory management, code refactoring, and framework analysis to diagnose defects and develop maintainable, performance-focused iOS solutions.
• Investigated and resolved crashes, memory-management issues, and native image-processing defects involving Objective-C, C++, and Objective-C++, strengthening cross-language interoperability, application stability, and low-level troubleshooting capabilities.

MegaProgramming | iOS Engineer · On-siteJan 2014 – Mar 2016

• Designed and developed a custom iOS calendar component with native Calendar synchronization, replacing restrictive third-party dependencies and reducing comparable feature development time by up to 86% (7× faster).
• Developed and delivered 3 production iOS applications and 1 reusable software library using Swift, Objective-C, UIKit, Core Data, Firebase, and RESTful APIs, improving reusability, maintainability, and software performance.
• Built reusable components across two CarWash iOS applications, reducing comparable feature development time by approximately 50% (2× faster) while implementing location-based bookings, customized Google Maps routing, and Apple MapKit integration.

Ministry of Defense of the Republic of Armenia | Remote Systems & Electronics Operations · On-siteMay 2011 – Jan 2014

• Inspected, maintained, and repaired 100+ remote-controlled electronic target systems operating at distances of up to 2,000 meters, applying troubleshooting, fault diagnosis, and preventive maintenance to maintain operational readiness.
• Operated centralized control systems and provided technical support during training exercises involving approximately 100–150 personnel, ensuring reliable target equipment operation and rapid defect resolution.
• Engineered a custom long-distance lighting solution that improved low-visibility maintenance efficiency by up to 4×, reducing repair times and equipment downtime during nighttime operations.