Full-stack Developer (Web/Mobile App Dev) – FT Freelance - Americas

Role Overview

We are in search of an experienced Full-stack Developer or a small team to build an innovative hybrid digital platform tailored for the mechanical construction industry. This platform aims to seamlessly integrate PDF-based mechanical drawings with structured data collection, markup, field reporting, and automated PDF report generation. The solution will consist of:

• Office Component: A web-based application focused on planning, markup, bidding, and report review, optimized for desktop browsers.
• Field Component: A dedicated Android mobile app optimized for tablets, offering comprehensive offline capabilities for on-site data capture, annotations, photos, and deficiency tracking.
• Shared Backend: Ensures seamless data synchronization across the platform.

Responsibilities

• Develop a responsive web application for office use, featuring PDF viewing, annotation, and data forms linked to drawings.
• Build a robust Android app with strong offline support, local storage, and automatic synchronization capabilities.
• Implement a shared backend API, manage database operations, handle authentication, and generate PDF reports.
• Ensure intuitive navigation within PDFs for all data input and collection tasks.
• Manage photo uploads, deficiency lists, and workflow progression from Quote to Final reports.

Required Skills

• At least 5 years of experience in full-stack development.
• Web development expertise using React (or Vue) and tools like PDF.js or Fabric.js for interactive PDFs.
• Mobile development skills with React Native or Flutter, with a strong focus on Android and additional iOS expertise being beneficial.
• Backend development experience with technologies such as Node.js/Express, Python/Django, and proficiency in REST/GraphQL APIs.
• Database management experience with PostgreSQL or similar systems for structured data.
• Skills in offline/sync solutions using IndexedDB/Redux Persist for web and SQLite/Hive for mobile, including background sync capabilities.
• Proficiency with PDF tools such as annotation persistence, overlay data, and generation using tools like Puppeteer or pdf-lib.
• Experience with role-based authentication, file handling, and mobile camera integration.

Nice to Have

• Experience with construction or engineering software.
• Ability to share code between web and mobile platforms (e.g., React + React Native).
• Familiarity with cloud services such as AWS or Firebase for synchronization.