Available to hire
Senior Software Engineer passionate about cutting-edge frontend technologies and functional programming. Fan of AWS-backed fintech systems and building AI assistant experiences with streaming, audio handling, and vector search.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Language
Polish
Advanced
English
Advanced
Ukrainian
Fluent
Russian
Fluent
German
Beginner
Work Experience
Senior Software Engineer at Minderа
January 1, 2025 - September 30, 2025Working on an AWS-backed infrastructure for a fintech startup.
Senior Software Engineer at MINDERA
January 1, 2025 - September 30, 2025Working on fintech startup infrastructure using AWS. Focus on building and maintaining reliable cloud services and supporting production operations.
Senior Software Engineer at Codemod
January 1, 2025 - October 5, 2025Created codemods for various open-source projects. Demonstrated work included Nuxt.js file-structure migration to v4, new pnpm catalog feature, TypeScript import specifiers migration, Valibot migration to 0.31.0, npm ES module export considerations, and development of a workflow engine for codemods.
Senior Software Engineer at Covоlute
March 1, 2024 - January 31, 2025Built an AI assistant that can interact with a user’s screen, record meetings, and answer questions immediately. Implemented text streaming, audio streaming, system audio recording, and search within a vector database.
Senior Software Engineer at Covolute
March 1, 2024 - January 31, 2025Worked on an AI assistant that lets users interact with their screen, record meetings, and answer questions immediately. Implemented/handled text streaming, audio streaming, system audio recording, and search over a vector database.
Senior Software Engineer / Team Lead / Eng Manager at Codemod.com
March 1, 2024 - October 5, 2025Created codemods for various open-source projects and built a workflow engine. Led migration of the entire frontend stack to modern tooling (Webpack to Vite, Lerna to Nx, Jest to Vitest) and implemented a monorepo strategy for 40 applications and 158 libraries. Delivered performance gains (smaller bundles, code-splitting) and reduced pipeline times, while coordinating across teams. Also contributed to open-source migration tooling for Nuxt.js, pnpm, Node TS import specs, and more.
Senior Software Engineer / Team Lead / Engineering Manager at Constant Contact
March 1, 2024 - October 5, 2025Identified frontend issues across the organization and proposed migrations to modern tooling. Designed and implemented a migration to a Nx-based monorepo, migrated frontend to modern bundling and SSR (Next.js), and built a scalable authentication flow using Redux/Saga. Led development of the Path Builder UI for email campaigns and improved build/test/pipeline efficiency.
Senior Software Engineer at Codemod.com
June 1, 2022 - March 31, 2024Created codemods for multiple open-source ecosystems (Nuxt.js, pnpm catalogs, TypeScript import specifiers, valibot, npm CJS/ESM). Also built a workflow engine and worked across backend/frontend parts for website and API.
Senior Software Engineer at codemod.com
June 1, 2020 - March 31, 2024Created codemods for open-source projects (Nuxt.js v4 file-structure migration, pnpm catalog feature, TypeScript import specifier fixes, valibot migration, npm CJS-over-ESM). Built a workflow engine for deploying codemods and worked across backend/frontend for the website/API/engine.
Senior Software Engineer at ReSci (acquired by Constant Contact)
May 1, 2020 - October 5, 2025Led frontend migration to Nx monorepo and moved SSR apps to Next.js. Designed and implemented a complex authentication flow using redux/saga and built/refined an email marketing UI (Path Builder) with advanced UI interactions. Improved build performance, code structure, and inter-team collaboration; integrated large-scale frontend workspace with 40 apps and 158 libraries.
Senior Software Engineer at ReSci
May 1, 2020 - October 5, 2025Migrated a large frontend repository from Lerna to a Nx monorepo with multiple libraries and applications; moved SSR to Next.js; designed and implemented a complex authentication flow using Redux/Saga; developed a UI for email marketing (Path Builder) with advanced interactions; improved data structures for performance.
PHP/JavaScript Developer at Hunters Consult
December 1, 2015 - October 5, 2025Woked with PHP/JavaScript development for Magento-based e-commerce CMSs for clients including Topsik, ViewSonic, Kidecal s, Gorjana & Griffin; contributed across PHP, JS, CSS/HTML.
Senior Software Engineer / Team Lead / Engineering Manager at Constant Contact
August 1, 2015 - May 31, 2020Owned and resolved frontend issues across the company; proposed and designed a migration plan with minimal disruption. Designed and implemented a new front-end stack using Nx workspace and led migration of the company’s frontend tooling: Webpack->Vite, Lerna->Nx, Jest->Vitest. Achieved improvements including reduced bundle size, higher Lighthouse score, reduced build times, and better coordination via monorepo consolidation of multiple apps and libraries. Previously migrated Lerna to Nx, moved SSR app to NextJS, designed complex auth (redux/saga) and email marketing UI (Path Builder), and supported Ruby/Rails-to-API integration for React frontend.
Freelance Developer at Freelance
December 31, 2013 - October 5, 2025Various projects using PHP/MySQL/JavaScript/CSS/HTML for multiple clients, delivering full-stack web solutions and custom components.
PHP/Javascript Developer at Hunters Consult
December 31, 2013 - October 5, 2025Developed Magento-based e-commerce solutions for diverse clients (e.g., Topik, ViewSonic, Kidcel s, Griffin), using PHP, JavaScript, CSS, and HTML. Worked on CMS-driven e-commerce implementations and custom frontend features.
Freelance Software Developer at Self-employed / Freelance
December 31, 2013 - October 5, 2025Delivered PHP/MySQL/JavaScript/CSS/HTML projects for diverse clients; worked across Laravel, CodeIgniter, and various front-end technologies to build web apps and dashboards.
Senior Software Engineer at Resci (acquired by Constant Contact)
August 1, 2013 - December 31, 2015Performed migration from Lerna to Nx to integrate a large monorepo with multiple libraries and applications. Migrated an SSR application to NextJS. Built complex authentication (redux/saga) and a rich email marketing UI (Path Builder). Studied Ruby and supported migration of Ruby on Rails for use as an API powering the React frontend.
Senior Software Engineer (acquired by Constant Contact) / Senior Software Engineer at Resci
August 1, 2013 - December 31, 2015Performed migration from Lerna to Nx, integrated a large monorepo with multiple libraries and apps, and moved an SSR application to NextJS. Designed and implemented complex auth flows using redux/saga. Built advanced email marketing UI (Path Builder) including rich drag/scroll interactions and task-native data structures. Studied Ruby and participated in migrating Ruby on Rails to provide an API backend for React frontend.
PHP/JavaScript Developer (Full-stack Engineer) at Hunters Consult (Constant Contact acquisition note)
January 1, 2006 - January 1, 2013Worked as PHP/JavaScript developer for Magento e-commerce CMS for various clients (e.g., Toppik, View Sonic, Kidecals, Gorjan & Griffin). Delivered backend and frontend features as a full-stack engineer.
Freelance Developer
January 1, 2006 - PresentWorked on various projects using PHP/MySQL/JavaScript/CSS/HTML and React, Node.js, Next.js, TypeScript/JavaScript, GraphQL, and UI styling tools. Also used Git, Linux/macOS tooling, Docker, and Kubernetes depending on project needs.
PHP/JavaScript Developer (full-stack) at Hunters Consult
January 1, 2006 - January 1, 2013Worked as a PHP/JavaScript full-stack developer for Magento e-commerce CMS projects across multiple clients. Contributed to both backend and frontend implementation.
Education
Qualifications
Industry Experience
Software & Internet, Professional Services, Media & Entertainment, Financial Services, Computers & Electronics
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
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