Igor Lesnenko Email & Phone Number

Russia

Ho Chi Minh City, Vietnam

United States

Parabol is a meeting facilitation tool used by over 500,000 people worldwide.As a full-stack developer in a cross-functional team, developed, architected, and implemented solutions that:- Drove a 300% increase in conversions- Doubled self-serve MMR- Drove 10% growth in users- Developed an internal UI library- Built and improved third-party service integrations- Created system architecture for next-gen productsThe project is open-source: https://github.com/parabolInc/parabol/Technologies: TypeScript, Node.js, React, Tailwind, GraphQL, PostgreSQL, RethinkDB, Redis, OpenAIWebsite: https://parabol.co/

Switzerland

RealAdvisor is a platform for real estate search and accurate property appraisal, leveraging advanced AI models.- As a Full-Stack Developer, contributed to the platform's growth to 1 million visitors and several thousand paid users.- Integrated email and calendar functionalities, creating an in-house "Gmail" with an advanced autocomplete rich editor on the frontend and complex synchronization logic on the backend.- Developed the frontend and backend features of a complex multi-tenant CRM using cutting-edge technologies.- Built a multi-language website for a real estate search engine and developed a real estate appraisal chatbot, integrating a headless CMS.Technologies: Node.js, React, GraphQL, Relay, PostgreSQL, Flow, Next.js, Google Cloud, Cloudflare Workers, Stripe, k6, E2E, Nylas

I founded and led a local lifestyle internet magazine, building a team of 20 talented individuals. Together, we created a competitive magazine that found its niche. We collaborated with major local brands, organized community events, and produced high-quality content that became well-regarded in the city.

Https://Github.Com/Spikenail

Spikenail is an open-source Node.js framework designed to simplify the creation of GraphQL APIs with minimal to no coding required. Github: https://github.com/spikenail- Architected and developed the entire frameworkTechnologies: Node.js, GraphQL, React, Apollo, Redis PubSub, WebSockets, TypeScript

Chatbot Builder is a no-code platform for creating chatbots. - Architected and developed the entire backend system.Technologies: Node.js, GraphQL, MongoDB, Docker and Facebook Messenger Platform

United Kingdom

Postcard & Tag is a travel catalog of hidden gems and a social network that allows users to post their own experiences and plan trips.- Led a team of 5 developers, increasing website performance by 5 times, enabling the site to handle 10 times the load, and reducing deployment time by 3 times by migrating the legacy app to use best practices — AWS (EC2, S3, SQS, RDS, ElastiCache), Docker, CI, and Node.js.- Developed an interactive map and a search engine using Elasticsearch and Google Maps API for finding locations like restaurants and tourist attractions within any geographic area, which doubled app usage.Technologies: Node.js, PHP (CakePHP), Docker, AWS (EC2, S3, SQS, RDS, ElastiCache), Elasticsearch, Redis, Logstash, WebSockets, Prerender, Instagram Real-Time API, Facebook API, Twitter API, Google Maps API, GIS, JMeter.

- Accepted the extraordinary challenge of developing a Tinder-like news application entirely in Vanilla JavaScript.- Created the entire frontend, successfully delivering an innovative and interactive user experience within a tight timeframe.

Shopozz is a platform that facilitates purchasing goods from abroad by offering free mail forwarding and other services. - Developed both the frontend and backend, with a key focus on improving the billing system and integrating the eBay API.Technologies: PHP, MySQL, JavaScript, jQuery, HTML, CSS, Bootstrap, eBay API

Maprox Observer is a vehicle tracking system.- As a Full-Stack Developer, architected and implemented a map that shows vehicle movements and events in real-time by integrating Node.js and WebSockets.Technologies: PHP, Zend Framework, ExtJS, Node.js, Socket.io, PostgreSQL, Redis, memcached, RabbitMQ, JasperReports, Python.

Formstruct is a SaaS no-code form builder that helps users easily create online forms and manage incoming requests.- Designed and built the entire platform from scratch, covering both the backend and frontend, and grew the user base to 50,000 users.Technologies: PHP, Symfony 2, JavaScript, MongoDB, memcached, nginx, docker

Master'S Degree, Mathematics And Computer Science

Bachelor'S Degree, Business/Managerial Economics