Roman
From Ukraine (GMT+2)
7 years of commercial experience
Lemon.io stats
4
projects done947
hours worked3
offers now 🔥Roman – Node.js, React, React Native
Meet Roman — a Middle-to-senior Full-Stack Developer focused more on the front end. Roman has a deep understanding of React, React Native, and Node.js and experience in e-commerce, fintech, and healthcare. He is excited about projects that involve a social factor and are meant to help people. His previous experience includes working on a photo/video-sharing platform, an invoice-creating app, and an educational mobile app. Roman is ready for new challenges!
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Potentially possibleExperience Highlights
Senior Integration Developer
The company specializes in AI and Machine Learning solutions for data analysis, process automation, and business optimization across industries like finance, healthcare, and logistics.
CRM System Integrations:
- 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 Monterra.ai.
- Updated and improved the settings page for integrations.
Performance and Functionality Enhancements:
- 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.
Using Google API:
- Determined and set map points based on address data using Google API.
- Optimized the number of requests to external services for increased efficiency.
Documentation and Analysis:
- Created UML diagrams for integrations.
- Compared the advantages of various services based on integration diagrams.
- Generated documentation using Typedoc.
- Fixed bugs to improve system reliability and performance.
Achievements:
- Increased data synchronization speed by 30%.
- Reduced the number of external requests by 25% through process optimization.
- Successfully integrated with three major CRM systems, expanding the company's client base.
- Improved user experience by updating the settings page interface.
- Developed a scalable system that allowed for rapid addition of new features and improvements.
- Enhanced documentation quality and coverage using Typedoc.
- Resolved critical bugs, leading to a more stable and robust integration platform.
Front-End Developer
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;
Full-Stack Developer
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.
Mobile Developer
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.
Front-End Developer
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.
Full-Stack Developer
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 Developer
Mobile app for people to connect them by interest in the nearest location, by geolocation 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;
Front-End Developer
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.
Full-Stack Developer
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).
Senior Full-Stack Developer
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.