Sergey Borovikov

iOS Tech Lead

Consumer car-sharing product serving 2M registered users and supporting more than 50M completed rentals. • Lead a team of 1–4 iOS engineers, depending on the project phase. Hired and onboarded three engineers; one later grew into a Senior role. Run regular 1:1s and help engineers plan their development. • Join feature discussions before development starts. Together with the product team, clarify user scenarios and constraints, compare technical options, and break the chosen solution into implementation stages. • Introduced a RICE-based backlog for technical debt. It gave product and business stakeholders a common way to compare technical work with feature work, and tech-debt items started reaching sprints regularly. • Defined the MVVM conventions used across the presentation layer: Input/Output contracts for ViewController–ViewModel bindings and the same pattern for reusable UI components. As part of the migration, removed the old global navigation layer and clarified the boundaries between presentation, domain, and data code. • Maintain the GitHub Actions and Fastlane pipeline behind weekly iOS releases. Signing, tests, TestFlight and internal distribution, and dSYM uploads to Crashlytics and Sentry are almost fully automated. • Added API endpoint discovery and failover after access to service endpoints became unreliable in Russia. The client validates candidate hosts, avoids duplicate health checks, and falls back safely; failures are visible in Sentry. • Added backend-controlled offline map downloads because mobile connectivity is often unreliable during a rental. The app keeps Mapbox tile regions and style packs in sync by revision and removes outdated data. • Built a backend-driven format for promotional blocks with deep-link and in-app WebView actions. New campaigns can be launched without waiting for an App Store release. • Added tracking for two points in the push lifecycle: delivery to the device and opening. Delivery is recorded in the Notification Service Extension, so it does not depend on the app being launched. • Set up Codex for day-to-day work with the project: added short architecture notes to key directories and wrote two project-specific skills — one for code review and another for generating MVVM module scaffolding. The whole team now uses this setup for reviews, investigating defects in complex algorithms, and occasionally generating tests.

• Hired and onboarded three iOS engineers; one later grew into a Senior role
• Introduced a RICE-based backlog for technical debt, so tech-debt items started reaching sprints regularly
• Defined MVVM conventions across the presentation layer and removed the old global navigation layer, clarifying boundaries between presentation, domain, and data code
• Weekly iOS releases almost fully automated via GitHub Actions and Fastlane (signing, tests, TestFlight, internal distribution, dSYM uploads to Crashlytics and Sentry)
• Added API endpoint discovery and failover after access to service endpoints became unreliable in Russia
• Added backend-controlled offline map downloads with revision-based sync of Mapbox tile regions and style packs
• Built a backend-driven format for promotional blocks with deep-link and in-app WebView actions, so new campaigns launch without an App Store release
• Added tracking for push delivery and opening via Notification Service Extension, independent of app launch
• Set up Codex with architecture notes and two project-specific skills (code review and MVVM module scaffolding), adopted by the whole team

iOS Developer

Developed SKB Online and DeloBank features across chat, payments, and home-screen teams for a digital bank serving more than 80K entrepreneurs. • Implemented iOS payment flows for Russia’s Faster Payments System. • Designed and delivered a customer loyalty and bonus system for small-business users. • Defined the architecture and technology stack for a new iOS product using MVVM, Clean Architecture, RxSwift, and RxFlow. • Designed SPM-based modular boundaries to improve incremental build performance and enable reuse across products.

• Implemented iOS payment flows for Russia’s Faster Payments System
• Designed and delivered a customer loyalty and bonus system for small-business users
• Defined the architecture and technology stack for a new iOS product using MVVM, Clean Architecture, RxSwift, and RxFlow
• Designed SPM-based modular boundaries to improve incremental build performance and enable reuse across products

iOS Developer

Built an iOS client for Fandom Sports Media.

• Built an iOS client for Fandom Sports Media

iOS Developer

Developed custom iOS applications, estimated projects, managed App Store Connect and TestFlight releases, and coordinated internal and external testing.

iOS Developer

Developed the Chameleon analytics and Edbox education applications from initial implementation through release readiness.

• Delivered the Chameleon analytics and Edbox education applications from initial implementation through release readiness

Junior iOS Developer

Started commercial iOS development across client projects.