codevanger

- Led five developers, covering task estimation and allocation, performance reviews, mentoring and delivery of team tasks. - Reduced rendering time for a map with 100,000 markers from 3.5 seconds to 200 ms by separating monolithic logic into independent layers. - Developed a Rust/WASM client-side cache in a browser worker with IndexedDB, adaptive batching, delta synchronization and local filtering. - Reduced average dashboard CPU utilization during database access from 120% to 80% under comparable workload through client-side caching and filtering. - Following the Terminal refactor, reported blocker and critical bugs decreased from 61 in H2 2024 to 27 in H1 2025. - Moved Terminal form configuration from hardcoded templates to an admin panel, saving an average of 2–3 hours per relevant task across development, testing, regression checks and deployment. - Reduced Terminal response time from 3 seconds to 0.3 seconds in load testing. - Worked with a colleague to modularize electronic signing, separating NCALayer and CryptoPro into provider integrations. - Unified geoservice APIs through a common integration layer supporting multiple providers. - Built tools for monitoring, adding and moderating vehicle trackers, with authorization, filters and tables. - Adapted a legacy application for mobile devices and tablets. - Extended document workflows with batch signing, reconciliation and bulk route transfers. - Created a reusable component-based UI architecture configurable for different customers. - Developed map-based visual analytics and contributed to Python/Django backend filtering and bug fixes. - Introduced project and code documentation for developers, analysts, implementation and QA teams. - Contributed to frontend technical requirements and task planning for a contract in Kazakhstan. - Promoted performance-focused development and helped define QA metrics.

- Developed an MVP currency and index monitoring dashboard with configurable block layouts and interface elements. - Built a subscription system with user-defined formulas, triggers and reusable settings. - Implemented configurable windows, menus and workspaces.

- Contributed to a data visualization platform using Angular and NgRx. - Added end-to-end testing with Cypress. - Developed a GIS date-handling module for planning, visualization and analytics.

- Owned the frontend of the entire product as its sole frontend developer. - Built document generation for real estate transactions with 17 document types and customizable templates. - Implemented SMS-based electronic signing. - Implemented application status monitoring and data updates. - Worked on a product subsequently acquired by CIAN and PSB.

Development of an EMR/EHR platform and eTIME, a project management application. - Built interactive SVG anatomy maps with predefined regions and medical labels, replacing manual drawing and labeling by clinicians. - Developed a C# scanning service on .NET Framework 4.5: a WebSocket devices command listed scanners, while scan with a device ID returned a base64 image to the browser. - Developed SQL scripts for updating medication data and ICD-10/ICD-11 classifications. - Built the eTIME frontend from scratch, including registration, boards, tasks, comments, profiles and workspaces. - Implemented task update synchronization through WebSocket/SignalR and workspace onboarding through email invitations.