TelegramMessenger/Telegram-iOS
Aug 2025 – Jan 2026
6 Months active
Languages Used
BazelSwiftYAML
Technical Skills
BazelContinuous IntegrationGitMobile DevelopmentObject-Oriented ProgrammingSoftware Engineering
Mikhail Filimonov
PROFILE
Mikhail Filimonov
Over a six-month period, Overtakeful contributed to the TelegramMessenger/Telegram-iOS repository by building and enhancing features such as broadcast upload extensions, auction APIs, and a robust Star Gift system. Their work focused on improving backend integration, API development, and error handling using Swift, Bazel, and YAML. Overtakeful refactored code for maintainability, introduced refund tracking for gifts, and enhanced cross-platform compatibility with macOS-specific improvements. They addressed bugs in time representation and message deletion, ensuring data accuracy and user trust. The depth of their engineering is reflected in thoughtful API design, incremental commits, and comprehensive testing to support reliable, scalable mobile experiences.
Overall Statistics
Feature vs Bugs
83%Features
Repository Contributions
23Total
Bugs
2
Commits
23
Features
10
Lines of code
7,110,726
Activity Months6
Your Network
2 peopleShared Repositories
2
Work History
January 2026
9 Commits • 3 Features
Jan 1, 2026January 2026 monthly work summary for Telegram-iOS development. Delivered cross-platform enhancements to the Star Gift system, improved macOS compatibility and performance in Media/Client, and standardized the badge UI. Highlights include API parameter support for rarities and crafted status, new crafting actions, robust error handling, and richer gift attributes; macOS-specific media timebase handling, Equatable conformance for ClientData, and refined StarGift badge display; addition of an uncommon badge category and normalization of badge type naming for UI consistency. These changes improve user engagement with gifts, reduce gifting errors, and ensure parity across iOS and macOS platforms. Contributed to code quality via targeted commits and better data models.
9 Commits • 3 Features
Jan 1, 2026January 2026 monthly work summary for Telegram-iOS development. Delivered cross-platform enhancements to the Star Gift system, improved macOS compatibility and performance in Media/Client, and standardized the badge UI. Highlights include API parameter support for rarities and crafted status, new crafting actions, robust error handling, and richer gift attributes; macOS-specific media timebase handling, Equatable conformance for ClientData, and refined StarGift badge display; addition of an uncommon badge category and normalization of badge type naming for UI consistency. These changes improve user engagement with gifts, reduce gifting errors, and ensure parity across iOS and macOS platforms. Contributed to code quality via targeted commits and better data models.
January 2026
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025 — Telegram-iOS: Delivered gift refund tracking feature; introduced isRefunded on StarGift and ProfileGiftsContext and updated processing flow. Linked commit fdf8fef76caac09e4bbf3cdf216c462c71ea6613 ('isRefunded for savedGift'). No major bugs fixed this month; ongoing reliability improvements. Business impact: improved refund visibility, data accuracy, and user trust; supports downstream analytics and customer support.
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025 — Telegram-iOS: Delivered gift refund tracking feature; introduced isRefunded on StarGift and ProfileGiftsContext and updated processing flow. Linked commit fdf8fef76caac09e4bbf3cdf216c462c71ea6613 ('isRefunded for savedGift'). No major bugs fixed this month; ongoing reliability improvements. Business impact: improved refund visibility, data accuracy, and user trust; supports downstream analytics and customer support.
November 2025
5 Commits • 1 Features
Nov 1, 2025Month: 2025-11 — Delivered core Telegram-iOS auction features and stability improvements. Key achievements: (1) Star Gifts and Auction Enhancements: new API with auction start/end dates and StarGift state (isActive, title) enabling accurate auction lifecycle; (2) Mono Forum Message Deletion Bug Fix: corrected deleteAllMessages path to preserve participant history when the peer is a mono forum. Impact: smoother in-app auctions, safer message history, and a clearer API surface. Technologies/skills: API design, iOS app architecture, state management, incremental commits, debugging and QA.
5 Commits • 1 Features
Nov 1, 2025Month: 2025-11 — Delivered core Telegram-iOS auction features and stability improvements. Key achievements: (1) Star Gifts and Auction Enhancements: new API with auction start/end dates and StarGift state (isActive, title) enabling accurate auction lifecycle; (2) Mono Forum Message Deletion Bug Fix: corrected deleteAllMessages path to preserve participant history when the peer is a mono forum. Impact: smoother in-app auctions, safer message history, and a clearer API surface. Technologies/skills: API design, iOS app architecture, state management, incremental commits, debugging and QA.
November 2025
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025: Telegram-iOS delivered two focused changes in TelegramMessenger/Telegram-iOS that improve reliability and data quality: 1) GroupCallMessagesContext time representation bug fix using epoch time for accurate timestamps; 2) Contact import enhancement allowing notes and entities during import. These changes enhance user trust in timestamps and enrich imported data for better search and organization.
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025: Telegram-iOS delivered two focused changes in TelegramMessenger/Telegram-iOS that improve reliability and data quality: 1) GroupCallMessagesContext time representation bug fix using epoch time for accurate timestamps; 2) Contact import enhancement allowing notes and entities during import. These changes enhance user trust in timestamps and enrich imported data for better search and organization.
September 2025
1 Commits • 1 Features
Sep 1, 2025Monthly summary for 2025-09: Telegram-iOS focused on code quality and maintainability. Key work: refactor in the Peer extension to remove unused emoji status handling and simplify profile color retrieval, reducing dead code and easing future changes.
1 Commits • 1 Features
Sep 1, 2025Monthly summary for 2025-09: Telegram-iOS focused on code quality and maintainability. Key work: refactor in the Peer extension to remove unused emoji status handling and simplify profile color retrieval, reducing dead code and easing future changes.
September 2025
August 2025
5 Commits • 3 Features
Aug 1, 2025In August 2025, Telegram-iOS delivered key feature enhancements and stability fixes that improve broadcasting, bot channel access, and theme management, while strengthening code quality and maintainability. These changes drive better user experiences and faster developer iteration cycles for media sharing, bot integration, and theming at scale.
August 2025
5 Commits • 3 Features
Aug 1, 2025In August 2025, Telegram-iOS delivered key feature enhancements and stability fixes that improve broadcasting, bot channel access, and theme management, while strengthening code quality and maintainability. These changes drive better user experiences and faster developer iteration cycles for media sharing, bot integration, and theming at scale.
Activity
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Quality Metrics
Correctness90.4%
Maintainability86.0%
Architecture86.0%
Performance86.0%
AI Usage27.0%
Skills & Technologies
Programming Languages
BazelSwiftYAML
Technical Skills
API DevelopmentAPI IntegrationBackend IntegrationBazelCode RefactoringContinuous IntegrationError HandlingGitMedia PlaybackMobile DevelopmentObject-Oriented ProgrammingSoftware EngineeringSwiftiOS Development
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