Key Contributions

• Led cross-cutting modularization across 14 business domains within a legacy Flutter app, establishing DDD and Clean Architecture boundaries. Each domain encapsulates its models, repositories, state, and UI, enabling parallel development streams, reducing merge conflicts, and improving incremental build times.
• Designed an update distribution and remote configuration system combining native update mechanisms (Google Play In-App Updates, iTunes Lookup API), Remote Config (Forced Update, Feature Toggles), and Shorebird Code Push, enabling Dart-layer hotfixes in minutes instead of waiting through the standard 1-7 day store review cycle.
• Cut analyzer issues by 99% (~2,000 to ~20) by enforcing strict static analysis across the Flutter codebase.
• Standardized trunk-based development and pair review across the 4-developer Flutter team, and created Individual Development Plans for 2 engineers to formalize technical growth.
• Drove technical hiring for the mobile team: conducted 20+ technical interviews covering live coding, architecture, and problem-solving to evaluate Flutter candidates and shape team composition.
• Adopted Claude as the team AI assistant and architected AgentSync, a pure-Bash CLI with zero runtime dependencies that compiles a single .ai/src source into native configurations through 13 AI coding-tool adapters. Validated it with 547 test cases across 31 Bats suites in CI on Linux, macOS, and Windows. Integrated it into the Astana Hub project and personal open-source repositories, cutting estimated hands-on time per shared-rule update from ~20-40 to ~2-5 minutes (~75-90%). Implemented SHA-256 drift detection, path containment, and transactional snapshots with rollback to protect manual edits and recover failed syncs.
• Initiated Astana Hub's Anthropic Certified Partner enrollment. Drove the company application and coordinated 10 engineers through the Claude Partner Network learning path, qualifying the organization for the Claude Certified Architect B2B tier.
• Built alem.llm, an OpenAI-compatible Dart client for the in-house AlemLLM API. It supports chat sessions with managed history and context, streamed responses, and typed domain models that decouple the UI from backend contracts, powering internal LLM-assisted features.
• Migrated dependency injection across 14 feature modules from Service Locator (GetIt) to Pure DI with a manual composition root and constructor injection. This turned missing dependencies into compile-time errors instead of runtime exceptions and made dependency graphs explicit and testable.
• Shipped a modular Drift ORM data layer caching 16 entity types across 14 feature modules, with atomic transactions, stale-while-revalidate reads, and hybrid TTL/row-count cleanup. Cached data is served immediately and refreshed in the background after TTL expiry. Offloaded large-dataset parsing to Isolates to prevent frame drops during list scrolling on poor networks.
• Engineered navigation on Octopus Router with stateful nested stacks, giving each tab independent history, type-safe arguments, and deep-link state restoration. The router reconstructs the active tab, stack depth, and nested screens so users land in the correct context.
• Rolled out Server-Driven UI (SDUI) for forum-related pages where content changes frequently, moving layout and content control to the backend so updates ship without an app store release.
• Implemented digital signature flow via government PKI service (Deep Linking, OAuth 2.0 via WebView, web fallback) that replaced a desktop signing agent. Cut signing time from 5-10 minutes per document to ~1.5 minutes.
• Deployed ReCAPTCHA Enterprise, filtering ~85% of bot registrations, and added screen capture protection for sensitive content.
• Eliminated production OAuth session races through generation-scoped transactions, stale-callback rejection, serialized secure storage with deterministic iOS Keychain recovery, and HTTPS-only traffic. After release, reported authentication failures stopped recurring.
• Rebuilt mobile CI/CD with dependency caching and parallel iOS/Android pipelines, cutting build times by ~60% (>10 to ~4 minutes) while automating TestFlight and Firebase App Distribution delivery, notifications, release diffs, and Jira ticket linking.
• Hardened Android releases for 16 KB memory pages by building an APK/ELF alignment checker and upgrading the NDK and packaging configuration to verify native libraries before distribution.
• Built a corporate Flutter UI Kit with 50+ reusable widgets and a shared GLSL shimmer clock, reducing 400+ per-widget tickers to 1 on skeleton-heavy screens. Integrated interactive 3D models through WebGL. Showcase: https://astanahub-dev.github.io/mobile_ui_kit/
• Automated analytics event integration with analytics_gen, cutting setup from 10-15 minutes to 2 through typed code and documentation generation, with CI publishing schema changes to analysts and product through Telegram.
• Created the Flart plugin to synchronize 50-100 Figma design tokens per update, reducing manual transfer from ~1 hour to minutes while keeping colors, typography, and variables consistent with code.
• Integrated ISpect diagnostics across HTTP, WebSocket, BLoC, and Drift, giving QA shareable in-app access to logs, network traffic, database activity, and device state.
• Architected a multi-backend layer with isolated clients for internal services and payment gateways (Kaspi Pay, Freedom Pay). Decoupled base URLs, interceptors, and error handling reduced new API integration setup from ~1 day of boilerplate to a few hours.
• Stabilized API behavior after server rate limits exposed redundant request bursts. Eliminated unnecessary calls and implemented bounded HTTP 429 retries with Retry-After, exponential backoff, jitter, and per-request opt-out.
• Drove cross-team API design alignment with the CTO and backend engineers around endpoint versioning and a Backend-for-Frontend layer. Established a shared direction for decoupling the mobile client from service-internal contracts and reducing over-fetching on list-heavy screens.
• Delivered the Digital Bridge networking module covering WebSocket chat with auto-reconnect, match cards, QR business-card scanning with contact saving, and two-way device calendar synchronization across iOS and Android. Replaced manual contact exchange and disconnected scheduling with a single in-app flow for connecting and planning sessions.
• Cut application size by ~26% total (35 MB to ~26 MB) in two stages. Wrote a custom WebP asset compression script that reduced the app from 35 MB to 29 MB, then authored a Python scanner that detected and removed unreferenced assets across all sources, freeing an additional ~3 MB.
• Launched Digital Bridge event modules covering ticketing, schedule builder, QR check-in, and gamification through AI Quest. The check-in flow processed 14,400+ QR scans with 86% ticket activation during live event load, in the context of an event with 27K+ attendees.
• Introduced an in-app survey system that replaced manual spreadsheet collection. It gave the product team structured per-segment feedback from visitors, speakers, and partners for the first time, unlocking data-informed planning for future events.
• Instrumented behavioral analytics, attribution, and experimentation with Microsoft Clarity session insights and heatmaps, AppsFlyer install attribution and campaign measurement, and A/B testing. This gave marketing channel-level acquisition data and enabled feature validation against real user behavior before full rollout.

Key Contributions

• Cut app startup time by ~60% (from ~3.0s to ~1.2s), measured from main() to first interactive screen. Offloaded heavy synchronous operations from main(), implemented parallel async dependency initialization, and added lazy-loading of modules.
• Designed a Feature-first architecture on the BLoC + Repository stack. Covered ~80% of business logic (BLoC, Repository, Use Cases) with Unit tests (verified via CI coverage reports). Implemented product analytics (events, funnels, core scenarios).
• Built the core EDM module covering creation, approval, resolutions, and signing via government PKI digital signatures (supporting ACL role models). Extended the platform with a vacation request flow that moved the process from physical HR visits to an in-app workflow.
• Created the team's first base of Architectural Decision Records (ADR) and guidelines, previously nonexistent documentation for onboarding new developers.
• Developed a 3-factor authentication system (SMS/email OTP, Face Detection via Google ML Kit, PIN) with Secure Storage. Face Detection served as an identity verification step (presence + liveness check) on top of the OTP and PIN factors.
• Configured CI/CD pipelines and monitoring. Built structured logging that cut diagnosis time for network and system errors from hours of log-digging to minutes of filtered search. Set up push notification delivery across Google GMS and Huawei HMS, which covered all device types in the enterprise client base.
• Cut application size by ~35% (50 MB → 32 MB, Play Console data) by removing unused dependencies and legacy assets, lowering storage requirements for budget devices.
• Shipped the Drive module (file storage, uploading, version history via Chopper) and battery-efficient GPS tracking via Method Channels. Brought both features from the web portal into the mobile app for field monitoring use cases without draining the device battery.

Key Contributions

• Optimized AgroGIS rendering of 5,000+ objects via dynamic zoom-level clustering, lazy loading (on-screen items only), and Isolate-based parsing of large datasets and charts. Eliminated the 2-3s freeze during zoom/pan on budget Android devices.
• Built offline-first architecture with tile caching (OpenStreetMap), data caching (Drift), and conflict resolution with update prioritization. Designed API contracts via Retrofit and aligned sync and error handling with the backend to maintain cache consistency.
• Assembled crop and finance dashboards for management reports. Integrated GA4 and Dynamic Links to give the product team visibility into drop-off points and feature adoption.