Roman – Node.js, React, React Native

Multi-market assistant is a start-up designed to help users resolve specific problems related to automating their needs, primarily intended for laws in Canada and the US, with particular context separation and pointed help.

• Built full front-end and back-end architecture from scratch, including database design and automated migrations;
• Implemented multi-market auto-deployment with Terraform, CI/CD, and automated DNS;
• Designed cost-efficient AWS Lambdas and integrated OpenAI SDK with vectorization and ranking;
• Created a customizable, market-based UI with feature flags;
• Developed advanced file upload logic for unlimited files and sizes;
• Delivered complete technical documentation.

A large-scale solar-installation robotics platform that accelerates construction timelines by automating panel placement, alignment, and installation across utility-scale solar farms.

• Designed and built the real-time operator interface in Svelte for controlling and monitoring the solar-installation robot;
• Developed Python services for robot communication, telemetry processing, and automated installation workflows;
• Implemented reliable data pipelines and real-time telemetry automation to ensure safe and consistent robot operation;
• Improved internal database structure and data handling to support faster, more stable system performance;
• Managed deployment workflows and overall system stability, preparing the platform for field testing and large-scale use.

The company specializes in AI and Machine Learning solutions for data analysis, process automation, and business optimization across industries like finance, healthcare, and logistics.

• Integrated with popular CRM systems such as Salesforce, Zoho, and HubSpot;
• Optimized lead and proposal creation processes within CRM systems;
• Developed data mapping between CRM systems and the company;
• Improved data synchronization performance between systems;
• Added a mechanism for rapid expansion of integration functionalities;
• Developed an access management system for different types of clients;
• Determined and set map points based on address data using Google API;
• Optimized the number of requests to external services for increased efficiency;
• Created UML diagrams for integrations.

Achievements:

• Increased data synchronization speed by 30%;
• Reduced the number of external requests by 25% through process optimization;
• Improved user experience by updating the settings page interface;
• Developed a scalable system that allowed for the rapid addition of new features and improvements;
• Enhanced documentation quality and coverage using Typedoc.

This is a start-up platform for hiring candidates for IT jobs, with matching features and subscriptions.

• Created front-end and back-end features;
• Redesigned the existing front end;
• Implemented integration with ATS;
• Implemented Whatsapp notifications.

This is a content-based messager that can push announcements and create groups by interests to link them and share events.

• Created cache functionality;
• Added new modal windows;
• Worked on improving performance;
• Debugged and resolved the application issues;

This is one of the biggest photo, video, and news platforms. Users can add images and get money for other people using them.

• Was responsible for the structure of new features, developing them, and delivering them to production;
• Wrote tests;
• Reviewed the code of other developers;
• Refactored and simplified the codebase.

The application allows users to create invoices and propose their work to another customer in Italy. Also, users could see dashboards with their income and other info.

• Was responsible for creating new screens for the application;
• Wrote tests and implemented new designs;
• Managed translations;
• Implemented a new flow for unauthorized users.

The website allows users to rent places for work in the office or table in co-working around the world. Сustom solution for e-commerce. By using the site, people book desks/offices, etc., that match their locations. Users can add guests, buy products, and visit events in co-working spaces.

• Developed features (register guests, events registration);
• Added custom UI elements;
• Wrote unit tests;
• Was responsible for code refactoring;
• Worked on real-time notifications;
• Re-designed some old pages.

An educational mobile app where any person can find a mentor in different areas of expertise. By using custom goals and video/text chats, users enhanced their skills in different areas.

• Developed features (text chat, goals logic);
• Was responsible for mentoring other team members;
• Refactored part of the code;

The main challenge was migration from Cordova to React-Native.

Mobile app for people to connect them by interest in the nearest location, by geolocation (using GeoJSON) and Bluetooth.

• Was responsible for the mobile part of the architecture and developing features;
• Worked on improving design mockups;
• resolved issues with native iOS and Android platforms;

Helps select materials and book time for measuring rooms. Also helps order some materials with tracking of implementation.

• Was responsible for developing features;
• Created architecture for the front-end side;
• Delivered them to production;
• Fixed issues.

The website for the aggregation of ethernet providers and VoIP companies with their own services such as ‘whois’, ‘BGP check’, etc. By using these services, people also ask for sell/rent IP v4 addresses and sub-networks.

• Developed features (such as DNS lookup, whois, etc.);
• Managed the database;
• Improved UI;
• Parsed sites for contacts.

Challenges on this project: direct work with Mongo, adding network utilities, parsing creation (was the biggest one because of the huge complexity and wide variety of contacts formatting).