Aleksei Filippov

A platform for automating user tasks through conversational assistants, designed to scale across domains, scenarios, and integrations.

• Designed and implemented a dialog-processing engine on a hexagonal plugin architecture: a multi-stage processing pipeline, feature plugins, routing across LLM services, episodic and semantic memory, a domain plugin, and strict separation between business logic and infrastructure through ports and adapters.
• Designed and implemented the system end to end: 2 Telegram bots, 2 API services, 5 web apps, 5 reusable npm packages, and Docker-based infrastructure, building a scalable and isolated architecture.
• Built 4 client-facing apps: a web admin dashboard, a Telegram Mini App with HMAC authentication and payment integration, a CRM operator dashboard with session history and prompt snapshots, and an Astro landing page with region-specific builds.
• Deployed infrastructure with Terraform: Docker containers, automated deployment with auto-rollback, service monitoring with Prometheus, Grafana, and Uptime Kuma, encrypted restic backups, regional deployments, and centralized secrets management via Infisical.
• Designed and implemented a command-line tool for workspace management, standardizing development workflows and reducing time-to-deploy.

A flexible e-commerce returns management platform built for integrations with marketplaces such as Shopify, Walmart, and eBay.

• Designed the architecture of two web apps from scratch (a returns management admin panel and a client portal for creating return requests) with a modular structure and internal packages, making new marketplace onboarding faster.
• Integrated apps into a Turborepo monorepo, ensuring unified build configuration and code reuse across projects.
• Optimized linting and formatting configuration (Prettier, ESLint, TypeScript), speeding up development by ~30% through automated enforcement of code standards.
• Created reusable monorepo packages used across 5 apps, eliminating logic duplication.
• Coordinated technical tasks across teams, keeping implementation decisions aligned across developers.
• Developed a UI kit and private libraries, reducing time to build new interfaces by ~20%.

A flexible logistics automation system for configuring goods-movement workflows across integrated companies.

• Migrated the project from Webpack 4 to Webpack 5, reducing build time by ~15% and speeding up development by ~20% through improved caching and tree-shaking.
• Contributed to product development and support in a distributed team of 20+ developers, improving time-to-market by optimizing processes and standardizing components.
• Mentored 2 junior developers to Middle level in 6 months through pair programming, code reviews, and individual learning plans.

An educational platform for creating and running tests, analyzing statistics, and managing academic departments, students, teachers, and administrators.

• Redesigned test creation and assignment flows: reduced steps from 7 to 3, cutting completion time by ~40%.
• Refactored over 40,000 lines of legacy code as part of the redesign, improving readability, maintainability, and frontend stability while reducing bugs by ~25%.
• Introduced LLM-assisted technical documentation support, using GPT to generate descriptions for complex components.
• Implemented a theme-switching system, expanding personalization options for 7 user-role types.

A medical portal for doctors and patients to manage clinical cases, track statistics, and communicate with each other.

• Analyzed over 30 client requirements, proposed and implemented UX/UI improvements (input field grouping, form pre-filling), reducing key workflow completion time by ~20%.
• Set up a CI pipeline and introduced automated checks (linting, type checking) on every PR, reducing regressions by ~15%.