Stanislav – Typescript, React, React Native

Platform designed to streamline the sales and closing processes for homebuilders. It focuses on improving efficiency, automating sales support, and enhancing customer satisfaction. It provides different experiences for homebuilders and buyers and allows to track milestones, manage home-related documents and requests, and re-engage past buyers to drive referrals and repeat purchases.

• Joined early and helped take the platform from the ground up, contributing to both product and architecture decisions as the codebase scaled
• Designed and consumed REST APIs and defined data models for core marketplace modules (Purchase Orders, Work Orders, document/request management)
• Built backend services with Node.js/Nest.js and PostgreSQL, deployed on AWS
• Built SMS verification flow integrating Twilio Verify Service
• Shipped Purchase Order and Work Order modules with email notifications to contractors and stakeholders
• Implemented a real-time data sync system between the platform and third-party homebuilder systems
• Built a mobile app experience for Homebuilders and Buyers with React Native and WebViews

All-in-one health and wellness solution. With expert-driven guidance powered by innovative technology, it creates a unique wellness program tailored to the lifestyle and health goals of the users, generates a nutrition plan, and provides guidance on healthy lifestyle habits.

• Translated intricate designs into the application to enhance visual appeal and UX;
• Enhanced user engagement by integrating support for push notifications, with deep linking to relevant application screens;
• Implemented UI in podcast and video player features, and developed its custom components;
• Developed AI-powered chatbot features, offering interactive assistance and personalized advice for users in a dialog manner;
• Migrated parts of the project from Expo managed workflow to bare React Native CLI for native module access;
• Integrated fitness and activity data through HealthKit, GoogleFit, FitBit, and Withings services, implemented synchronization with the server;
• Implemented subscriptions and in-app purchases with RevenueCat, managing paywall logic, entitlements, and access to premium features
• Took part in development of the core business logic of the platform

A large-scale consumer website providing up-to-date travel and resort information, including snow conditions, forecasts, and destination insights. The platform serves a broad audience of travelers and outdoor enthusiasts.

• Delivered the first major batch of frontend tasks, all successfully passing QA without critical regressions;
• Led a major Next.js upgrade, ensuring compatibility and improved performance;
• Fixed and implemented 10+ frontend bugs and UI enhancements, improving visual consistency and usability;
• Redesigned and implemented the global layout header, aligning it with new design guidelines and improving navigation clarity;
• Contributed to a full-page visual refresh, modernizing layouts and enhancing the overall look and feel of the website.

Application that facilitates the exchange of monetary gifts and the creation of personal gift registries. Users can seamlessly withdraw these gifts using an integrated mobile app, “Birdie: Cash Gifts,” with the assistance of the Plaid payment system. Users earn cashback rewards on purchases and can conveniently withdraw the cashback via the “Birdie” mobile app.

• Helped build the product from an early stage through to production launch on major app stores
• Designed and developed a UI kit tailored for White Label products from scratch
• Integrated payment and payout flows via the Plaid system, including cashback rewards and withdrawals through the mobile app
• Transitioned Figma designs into live UI components within the mobile application
• Managed client-side application state with MobX, separating server state (React Query) from UI/business logic
• Collaborated on API endpoint integrations and the application's core business logic
• Managed the deployment process of the mobile app to major app stores

Digital health platform acting as medical assistant that provides personalized, evidence-based health guidance, symptom analysis, and care recommendations that help users treat chronic health issues. Users receive instant, context-aware answers to health questions and actionable insights with physician-reviewed lab orders and prescription support, all through a user-friendly mobile experience.

• Implemented reusable UI components based on the design system to improve development efficiency and consistency;
• Implemented complex branching multi-step forms, validation, and UI of the web and mobile applications;
• Integrated activity and fitness data through HealtKit SDK, implemented synchronization with the server;
• Implemented smooth chart components to display user analytics based on their completed experiments;
• Managed application submissions to the App Store with Expo Application Services.