Full-Stack Software Engineer | React, TypeScript

Danylo P

Information

Available hours \ week
40 h/w
Seniority level
Middle
Years of experience
4 yrs.
Location
Ukraine, Lviv
Nationality
Ukraine
Timezone
(GMT+02:00) Kyiv

Languages

English
Advanced (C1)

About

Danylo is a Full-Stack Software Engineer with 4+ years of commercial experience developing web and mobile applications, including healthcare products, AI-powered applications, operational dashboards, and SaaS platforms. He has strong practical experience with React, React Native, TypeScript, Next.js, Node.js, NestJS, PostgreSQL, REST APIs, and modern frontend architecture, and has delivered management and healthcare-related projects, as well as AI-enabled patient assessment products. He has also worked with structured data collection, authentication, real-time integrations, and reusable UI components. Additionally, he has experience developing Python/FastAPI services and automating API tests with Pytest. He is comfortable implementing well-defined features, following the existing architecture, collaborating through code reviews, and delivering tested functionality as part of a cross-functional team.

Experience

Medora — AI Healthcare Assessment Platform

Lead Full-Stack Developer / Solution Architect

About the Project

AI-enabled healthcare assessment platform supporting symptom collection, medical-image analysis, structured findings, contextual retrieval, and user-facing assessment workflows.

  • Healthcare
  • AI

Responsibilities

– Contributed to full-stack product architecture and delivery across mobile interfaces, backend services, databases, AI integrations, and AWS infrastructure; – Developed React Native and Expo application features for onboarding, symptom collection, medical-image upload, and assessment presentation; – Built backend application functionality using TypeScript, Next.js, and NestJS; – Integrated AWS Cognito authentication and cloud-based image workflows using Lambda and S3; – Worked with DynamoDB and Supabase for application data management; – Integrated CNN-generated findings into retrieval-augmented workflows using FAISS and LLM processing; – Developed Python/FastAPI services for controlled clinical-data retrieval and structured processing; – Implemented Pytest integration checks for API behavior and authorization

Camper and Outdoor Rental Marketplace

Full-Stack Developer / Mobile Developer

About the Project

Multi-sided marketplace enabling users to discover, book, and manage campervan, boat, and campsite rentals, while allowing providers to manage inventory and availability.

  • Travel

Responsibilities

– Developed features across web, mobile, and backend application layers; – Implemented listing, search, booking, and availability-management functionality; – Built responsive React-based interfaces and reusable application components; – Integrated frontend features with Node.js and NestJS backend APIs; – Worked with PostgreSQL-backed booking and marketplace data; – Supported asynchronous state management with Redux and Redux-Saga; – Diagnosed and fixed frontend, backend, and integration defects; – Contributed automated unit and integration tests for booking workflows.

Healthcare Analytics Dashboard

Front-End Developer

About the Project

Healthcare administration platform enabling medical professionals to monitor patient information collected through insulin-related devices, including injection history, glucose levels, and aggregated health metrics.

  • Healthcare
  • MedTech

Responsibilities

– Developed and maintained application functionality for patient health-data monitoring; – Contributed to frontend architecture for a data-intensive clinical administration interface; – Built and improved dashboard functionality for accessing patient records and reviewing device-generated information; – Worked with backend-connected information and aggregated healthcare statistics; – Maintained technical documentation and supported application improvements; – Developed reusable React/TypeScript components for clinician workflows and data visualization; – Added Jest component tests for critical patient-data interface functionality.

Health App

Mobile App Developer

About the Project

Telemedicine application enabling patients to schedule healthcare appointments and receive remote consultations from doctors, nurses, and psychologists.

  • Healthcare

Responsibilities

– Developed and maintained mobile application features supporting appointments and online consultations; – Implemented structured user interfaces, filtering mechanisms, and healthcare service selection flows; – Integrated real-time healthcare APIs to connect application functionality with backend services; – Worked with PostgreSQL-connected application workflows; – Supported WebSocket-based application behavior and asynchronous data updates; – Optimized mobile interfaces for iOS and Android devices; – Built React/TypeScript clinical dashboard screens and reusable patient-data forms; – Contributed Python/FastAPI endpoints for retrieving appointment and patient information; – Added automated API tests covering validation, authorized access, and error handling.

Skills & technologies

Veterinary Project

Front-End Developer / Mobile App Developer

About the Project

AI-enabled veterinary health management application allowing users to record symptoms, review animal health history, access veterinary information, and manage preventive-care reminders.

  • HealthTech
  • AI

Responsibilities

– Developed application interfaces and core features for animal-health workflows; – Implemented state management and integrated application components with backend services; – Built user-facing features supporting symptom logging and preventive-care information; – Worked with React, TypeScript, and backend-connected data; – Prepared technical documentation and contributed to code reviews; – Collaborated with other developers to improve application functionality and stability; – Implemented structured AI-response presentation with source references and validation checks; – Contributed automated tests for health-data forms and API integrations.