Experience

Timeline

Web Development Lead

X5 Tech

2026 - Present

Leading development of a hybrid mobile application (Native + WebView) for one of the largest grocery retail groups globally, with 20M+ MAU, using React.js and PWA
Implemented mystery-shopping functionality that achieved more than 80% geographic coverage of stores, significantly reducing OPEX
Designed and implemented offline functionality with Service Worker API/Workbox, IndexedDB, and Dexie.js, increasing user retention and reducing attrition
Increased NPS by improving the UI based on A/B testing and UX interviews & research
Integrated modern Web APIs (View Transitions, Vibration, Geolocation, Web Share), modern CSS, and Lottie animations to deliver a seamless cross-platform experience on iOS and Android
Organizing continuous frontend monitoring with Sentry and related tooling to improve stability, Core Web Vitals, and overall quality
Participating in AI/LLM integration for data moderation via computer vision and fraud detection
Product won E+ Awards and CX Awards in AI adoption, innovation, and best client experience
Collaborating with cross-functional teams to align the application with business goals, improving engagement and operational efficiency
Maintaining side projects including an admin/moderation app (React-Admin + mock Bun server) and SSR/Next.js landing pages

Senior Software Engineer

IntexSoft

2022 - 2026

Acted as Senior/Lead Frontend Engineer on client engagements, including a top global grocery retailer later continued in-house at X5 Tech
Owned frontend architecture for hybrid WebView/PWA mobile experiences with a focus on performance, accessibility (WCAG), and design-system consistency
Delivered offline-capable features and Core Web Vitals improvements using Service Workers, IndexedDB, and modern React tooling
Partnered with product, QA, and design to ship user-facing features and elevate frontend quality practices across the engagement

Software Engineering Manager

Godel Technologies

2021 - 2022

Managed the company's 4th largest division, overseeing operations across Grodno, Belarus, and Vilnius, Lithuania
Acted as the primary point of contact for medium to large UK clients, processing their requests and ensuring alignment with internal workforce capabilities
Optimized resource allocation by matching client needs with the most suitable engineers from the internal talent pool, ensuring high-quality project delivery
As a Talent Manager, provided mentorship and career guidance to the division's top senior engineers, helping them formulate and achieve their professional goals using SWOT analysis and SMART method
Successfully introduced and implemented OKRs (Objectives and Key Results) across the division

Senior Web Engineer

Indy (ex-Tispr)

2019 - 2021

Enhanced the existing functionality of the web platform and played a pivotal role in the design and implementation of major new features, including WYSIWYG rich editors, calendars, task boards, and white-labeling solutions
Developed and maintained the company's custom Design System/UI Kit (Tispr Design Library - TDL), ensuring consistency and scalability across all projects
Migrated the UI Kit to a sharable npm package hosted on the Nexus registry, enabling seamless integration and reuse across multiple projects
Adopted a Design Tokens approach based on CSS Custom Properties and later wrote about it in Smashing Magazine and Better Programming
Introduced and implemented unit and integration testing for the frontend codebase, transitioning from Enzyme to React Testing Library (RTL). Increased test coverage from zero to over 50%, significantly improving code quality and reliability
Designed and implemented a modern architecture for the website and content blog using a headless CMS (Strapi) and server-side rendering (SSR, Next.js), resulting in enhanced SEO, performance, and user engagement
Played a key role in interviewing and forming a strong onsite frontend team, replacing all outstaff personnel with senior software engineers

Web Software Engineer

*instinctools EE Labs

2010 - 2019

Over 9 years, contributed to 20+ projects across a diverse range of clients, including enterprise-level companies (Daimler, Evonik, SIBUR), mid-sized businesses (Florence Healthcare, NextGate, EquipmentWatch, Westernacher), and startups (TrueImpact, Lition Energy)
Primarily worked through outsourcing and outstaffing models, delivering high-quality Web UI and Frontend solutions tailored to client needs
Joined the company as a QA Engineer/SDET when it had 20+ employees and played a key role in its transformation into a thriving organization with 300+ employees
Advanced to Lead Software Engineer, managing one of the engineering groups within the Web Department and overseeing a team of 9 engineers
Provided technical leadership, mentorship, and guidance, ensuring successful delivery and fostering collaboration and innovation
Delivered scalable, user-friendly Web UI/Frontend solutions for clients across various industries
Supported the company's growth by contributing to process improvements, team development, and best practices in software engineering

Lead Web Engineer (outstaff from *instinctools)

Lition Energy

2018-2019

Built from scratch a green-energy purchasing platform for the German blockchain startup Lition Energy using React.js, Redux, Next.js/SSR, a headless CMS, Node.js, Express.js, Knex.js, MySQL, and Ethereum
Adapted all screens to mobile, tablet, and desktop using a responsive (RWD) approach
Maintained a high level of frontend accessibility using Lighthouse metrics
Improved backend quality by implementing unit and integration tests
Replaced WordPress with a Headless CMS (Contentful) + SSR (Next.js) architecture so the client could manage landing content for different consumer groups; improved SEO and Core Web Vitals
Integrated the third-party PowerCloud system for electricity payment and billing
Led the frontend and backend development team
As a result, the startup raised $5 million during the ICO round, was mentioned in Forbes, and was later sold

Web Fundamentals Trainer

IT Academy

2018

Led the course "Website development using HTML, CSS and JavaScript"

Lead Frontend Engineer (outstaff from *instinctools)

Big Three Management Consulting (NDA, but easy to Google)

2016-2018

Developed a competitive matching module for an analytics platform for a leading US retailer (React, custom Redux on a pub/sub pattern, React-Toolbox UI, Enzyme unit tests, WebDriver E2E)
Managed a frontend team building a strategic web app for competitive analysis of product range and pricing in the mass-market segment
Migrated legacy jQuery modules to modern React, creating a high-performance UI with advanced filters, an interactive catalog, dashboards, and UX informed by user research
Enabled data-driven decisions with real-time comparison of key product categories against major market players (Amazon, Target, TJ Maxx)

Frontend Software Engineer (outstaff from *instinctools)

TrueImpact

2015-2016

Built the UI from scratch with Angular.js 1.5 and Bootstrap for a startup providing grant, charitable investment, and volunteerism analytics—shipping investor demos on a daily cadence early on
Evolved the MVP into a production-ready app with a thorough redesign of communication logic and UX

JavaScript Software Engineer (outstaff from *instinctools)

EquipmentWatch

2015-2016

From this project onward, focused fully on the JavaScript stack, building a web application with Ember.js, Node.js, and MongoDB
Primarily owned the UI and SPA routing within the Ember.js ecosystem
The project was later sold to Randall-Reilly

Java Software Engineer (outstaff from *instinctools)

Westernacher Solutions

2014-2015

Developed ZEUS software for the German Chamber of Notaries using ExtJS with Java, Spring, Hibernate, and BPMN/Activiti
Primarily worked on the SPA UI with ExtJS 4 routing and the Neptune theme
Learned a great deal from German colleagues about JavaScript and Domain-Driven Design (DDD). Fun fact: when I joined, the team sent me a PDF of Eric Evans' DDD book and said, "Read it before you start."

Java Software Engineer (outstaff from *instinctools)

SIBUR

2013-2014

Helped develop an enterprise content management (ECM) system for Sibur Holding based on Documentum ECM, Oracle, Java/JSP, and ExtJS 3.5 in a waterfall process estimated at about 10 person-years
Specialized in UI development with ExtJS and legacy CSS approaches such as table layout and floats
Also served as the first line for JavaScript bug fixes

Java Software Engineer (outstaff from *instinctools)

Mercedes Benz Daimler AG

2012-2013

Developed an internal user management system (UMS) for Daimler AG; selected for the combination of backend, frontend, and test automation skills
Handled layout and frontend tasks, including mobile adaptation with jQuery UI, jQuery Mobile, JSF PrimeFaces, and XHTML
Supported the backend with Java Core and IBM DB2
Increased coverage and configured tests with Selenium and JMeter
Fun fact: I even drew icons in Photoshop for various button states across a wide range of tables

Java Software Engineer (outstaff from *instinctools)

Evonik AG

2011-2012

Contributed to a web-based document management system based on Ditaworks using Java, Eclipse RAP/RCP, qooxdoo.js, and SWT, focusing on BIRT reporting at the JavaScript/Java intersection
Earlier, as a QA engineer, tested the multi-touch presentation table app at the Evonik exhibition

QA Engineer (outstaff from *instinctools)

CROC

2010-2011

Tested a document management system based on EMC Documentum. Maintained test scenarios in Excel. Conducted cross-browser testing, including very old versions of Opera and IE7.

Experience

Timeline

Web Development Lead

X5 Tech

2026 - Present

Leading development of a hybrid mobile application (Native + WebView) for one of the largest grocery retail groups globally, with 20M+ MAU, using React.js and PWA
Implemented mystery-shopping functionality that achieved more than 80% geographic coverage of stores, significantly reducing OPEX
Designed and implemented offline functionality with Service Worker API/Workbox, IndexedDB, and Dexie.js, increasing user retention and reducing attrition
Increased NPS by improving the UI based on A/B testing and UX interviews & research
Integrated modern Web APIs (View Transitions, Vibration, Geolocation, Web Share), modern CSS, and Lottie animations to deliver a seamless cross-platform experience on iOS and Android
Organizing continuous frontend monitoring with Sentry and related tooling to improve stability, Core Web Vitals, and overall quality
Participating in AI/LLM integration for data moderation via computer vision and fraud detection
Product won E+ Awards and CX Awards in AI adoption, innovation, and best client experience
Collaborating with cross-functional teams to align the application with business goals, improving engagement and operational efficiency
Maintaining side projects including an admin/moderation app (React-Admin + mock Bun server) and SSR/Next.js landing pages

Senior Software Engineer

IntexSoft

2022 - 2026

Acted as Senior/Lead Frontend Engineer on client engagements, including a top global grocery retailer later continued in-house at X5 Tech
Owned frontend architecture for hybrid WebView/PWA mobile experiences with a focus on performance, accessibility (WCAG), and design-system consistency
Delivered offline-capable features and Core Web Vitals improvements using Service Workers, IndexedDB, and modern React tooling
Partnered with product, QA, and design to ship user-facing features and elevate frontend quality practices across the engagement

Software Engineering Manager

Godel Technologies

2021 - 2022

Managed the company's 4th largest division, overseeing operations across Grodno, Belarus, and Vilnius, Lithuania
Acted as the primary point of contact for medium to large UK clients, processing their requests and ensuring alignment with internal workforce capabilities
Optimized resource allocation by matching client needs with the most suitable engineers from the internal talent pool, ensuring high-quality project delivery
As a Talent Manager, provided mentorship and career guidance to the division's top senior engineers, helping them formulate and achieve their professional goals using SWOT analysis and SMART method
Successfully introduced and implemented OKRs (Objectives and Key Results) across the division

Senior Web Engineer

Indy (ex-Tispr)

2019 - 2021

Enhanced the existing functionality of the web platform and played a pivotal role in the design and implementation of major new features, including WYSIWYG rich editors, calendars, task boards, and white-labeling solutions
Developed and maintained the company's custom Design System/UI Kit (Tispr Design Library - TDL), ensuring consistency and scalability across all projects
Migrated the UI Kit to a sharable npm package hosted on the Nexus registry, enabling seamless integration and reuse across multiple projects
Adopted a Design Tokens approach based on CSS Custom Properties and later wrote about it in Smashing Magazine and Better Programming
Introduced and implemented unit and integration testing for the frontend codebase, transitioning from Enzyme to React Testing Library (RTL). Increased test coverage from zero to over 50%, significantly improving code quality and reliability
Designed and implemented a modern architecture for the website and content blog using a headless CMS (Strapi) and server-side rendering (SSR, Next.js), resulting in enhanced SEO, performance, and user engagement
Played a key role in interviewing and forming a strong onsite frontend team, replacing all outstaff personnel with senior software engineers

Web Software Engineer

*instinctools EE Labs

2010 - 2019

Over 9 years, contributed to 20+ projects across a diverse range of clients, including enterprise-level companies (Daimler, Evonik, SIBUR), mid-sized businesses (Florence Healthcare, NextGate, EquipmentWatch, Westernacher), and startups (TrueImpact, Lition Energy)
Primarily worked through outsourcing and outstaffing models, delivering high-quality Web UI and Frontend solutions tailored to client needs
Joined the company as a QA Engineer/SDET when it had 20+ employees and played a key role in its transformation into a thriving organization with 300+ employees
Advanced to Lead Software Engineer, managing one of the engineering groups within the Web Department and overseeing a team of 9 engineers
Provided technical leadership, mentorship, and guidance, ensuring successful delivery and fostering collaboration and innovation
Delivered scalable, user-friendly Web UI/Frontend solutions for clients across various industries
Supported the company's growth by contributing to process improvements, team development, and best practices in software engineering

Lead Web Engineer (outstaff from *instinctools)

Lition Energy

2018-2019

Built from scratch a green-energy purchasing platform for the German blockchain startup Lition Energy using React.js, Redux, Next.js/SSR, a headless CMS, Node.js, Express.js, Knex.js, MySQL, and Ethereum
Adapted all screens to mobile, tablet, and desktop using a responsive (RWD) approach
Maintained a high level of frontend accessibility using Lighthouse metrics
Improved backend quality by implementing unit and integration tests
Replaced WordPress with a Headless CMS (Contentful) + SSR (Next.js) architecture so the client could manage landing content for different consumer groups; improved SEO and Core Web Vitals
Integrated the third-party PowerCloud system for electricity payment and billing
Led the frontend and backend development team
As a result, the startup raised $5 million during the ICO round, was mentioned in Forbes, and was later sold

Web Fundamentals Trainer

IT Academy

2018

Led the course "Website development using HTML, CSS and JavaScript"

Lead Frontend Engineer (outstaff from *instinctools)

Big Three Management Consulting (NDA, but easy to Google)

2016-2018

Developed a competitive matching module for an analytics platform for a leading US retailer (React, custom Redux on a pub/sub pattern, React-Toolbox UI, Enzyme unit tests, WebDriver E2E)
Managed a frontend team building a strategic web app for competitive analysis of product range and pricing in the mass-market segment
Migrated legacy jQuery modules to modern React, creating a high-performance UI with advanced filters, an interactive catalog, dashboards, and UX informed by user research
Enabled data-driven decisions with real-time comparison of key product categories against major market players (Amazon, Target, TJ Maxx)

Frontend Software Engineer (outstaff from *instinctools)

TrueImpact

2015-2016

Built the UI from scratch with Angular.js 1.5 and Bootstrap for a startup providing grant, charitable investment, and volunteerism analytics—shipping investor demos on a daily cadence early on
Evolved the MVP into a production-ready app with a thorough redesign of communication logic and UX

JavaScript Software Engineer (outstaff from *instinctools)

EquipmentWatch

2015-2016

From this project onward, focused fully on the JavaScript stack, building a web application with Ember.js, Node.js, and MongoDB
Primarily owned the UI and SPA routing within the Ember.js ecosystem
The project was later sold to Randall-Reilly

Java Software Engineer (outstaff from *instinctools)

Westernacher Solutions

2014-2015

Developed ZEUS software for the German Chamber of Notaries using ExtJS with Java, Spring, Hibernate, and BPMN/Activiti
Primarily worked on the SPA UI with ExtJS 4 routing and the Neptune theme
Learned a great deal from German colleagues about JavaScript and Domain-Driven Design (DDD). Fun fact: when I joined, the team sent me a PDF of Eric Evans' DDD book and said, "Read it before you start."

Java Software Engineer (outstaff from *instinctools)

SIBUR

2013-2014

Helped develop an enterprise content management (ECM) system for Sibur Holding based on Documentum ECM, Oracle, Java/JSP, and ExtJS 3.5 in a waterfall process estimated at about 10 person-years
Specialized in UI development with ExtJS and legacy CSS approaches such as table layout and floats
Also served as the first line for JavaScript bug fixes

Java Software Engineer (outstaff from *instinctools)

Mercedes Benz Daimler AG

2012-2013

Developed an internal user management system (UMS) for Daimler AG; selected for the combination of backend, frontend, and test automation skills
Handled layout and frontend tasks, including mobile adaptation with jQuery UI, jQuery Mobile, JSF PrimeFaces, and XHTML
Supported the backend with Java Core and IBM DB2
Increased coverage and configured tests with Selenium and JMeter
Fun fact: I even drew icons in Photoshop for various button states across a wide range of tables

Java Software Engineer (outstaff from *instinctools)

Evonik AG

2011-2012

Contributed to a web-based document management system based on Ditaworks using Java, Eclipse RAP/RCP, qooxdoo.js, and SWT, focusing on BIRT reporting at the JavaScript/Java intersection
Earlier, as a QA engineer, tested the multi-touch presentation table app at the Evonik exhibition

QA Engineer (outstaff from *instinctools)

CROC

2010-2011

Tested a document management system based on EMC Documentum. Maintained test scenarios in Excel. Conducted cross-browser testing, including very old versions of Opera and IE7.