Aleksandr Koloshtivin

• Architected and built 6+ prod-ready personal projects covering ~90% of typical use cases with Angular 19-20 features including Signals and Signal Store • Applying an AI-first development approach developed: o AI-powered Telegram bots for CV tailoring o AI-powered vacancy aggregation bot o AI-powered finance helper bot o React Native email agent MVP o React Native E-book reader with custom functionality

Company: B2B software company delivering advanced digital platforms for medical research and pharmaceutical data analysis Project: Omnichannel Commercial Excellence Manager, Data visualization Environment: Angular 15, RxJs, MS Azure, MSAL, NgRx, Denodo, Neo4j, PowerBI • Architected, built, and deployed a B2B marketing platform from the ground up as the sole frontend engineer, enabling the company to launch its MVP 3 months ahead of schedule • Implemented a TDD approach with Jasmine/Karma, achieving 95% unit test coverage that prevented critical bugs in production and cut regression testing time by half • Developed an internal reusable component library and feature modules that reduced development time for subsequent features by an estimated 30% • Optimized the application's data layer interaction with Denodo and Neo4j, cutting key analytics report generation time from ~20 seconds to under 10 seconds

Company: Global tech consultancy providing enterprise-grade software solutions to Fortune 500 clients Project: Universal Device Manager Application Environment: Angular 13, AngularJS, RxJs • Led the migration of a legacy enterprise application from AngularJS to Angular 13, improving performance and establishing a modern, maintainable codebase • Increased unit test coverage from <20% to over 90% on all new modules • Mentored a team of 5 engineers (including 3 seniors) with best practices and design patterns Regrettably, I was made redundant as a result of the global crisis and a reduction in demand for my position.

Company: In-house tech unit of one of Eastern Europe’s largest telecom providers, focused on large-scale digital services Project: Content manager system web application that helps content managers with containing a media platform some content Environment: Angular, RxJs, NGRx • Optimized the app's CRP by implementing code-splitting and lazy loading, reducing initial load time by 25% for users on slow connections • Refactored the state management logic using NgRx, simplifying data flows and reducing the number of bugs related to state inconsistency • Interviewed new developers and on-boarded newcomers to free the team lead's time for more important tasks • To cooperate with a backend team more efficiently learned a new language, Java

Company: Global software engineering company with 20+ years of experience delivering custom solutions across healthcare, logistics, and AI Projects: An application for refunding taxes (https://digitax.ru/) Solutions for live monitoring of fire safety in cultural heritage sites, air pollution tracking in a research region, and deforestation monitoring. An application which helps the voting Commission assistants Environment: Angular 7, RxJs, NGRx • Rapidly onboarded to an enterprise project, delivering production-ready Angular components within the first sprint and quickly taking ownership of a key feature module • Produced data visualisation features using D3.js, Chart.js and similar libraries

Company: Agile IT agency building enterprise web tools and interactive data platforms for mid-size businesses Project: Employees monitoring system Environment: VueJS, VueStore, JavaScript • Developed an interactive map feature for a data visualization platform using Vue.js and Leaflet, enabling users to analyze geospatial data. Following my first months of working with VueJS, I opted to pivot my development focus and accepted an opportunity with an international company to begin utilizing Angular as my primary framework.