Open Tag LTD
Full Stack Engineer
Open Tag LTDUkraine6 hours ago
Full-timeRemote FriendlyEngineering, Information Technology
Full-Stack Engineer (Remote. Full time)


We are seeking a Full-Stack Engineer. This role requires a strong foundation in building modern front-end applications with React, integrating third-party authentication solutions, and developing robust backend microservices in Python. The ideal candidate will be comfortable working across the stack to deliver secure, scalable, and data-driven applications.


Key Responsibilities
  • Develop and maintain front-end applications using React.
  • Implement secure authentication and authorization flows using OAuth2 and third-party providers (e.g., Clerk).
  • Design and build scalable Python-based API microservices to support middleware functionality.
  • Integrate external APIs and services into the platform.
  • Collaborate with product and design teams to build intuitive data visualizations.
  • Present data effectively using charting libraries such as D3.js and HighCharts.
  • Ensure high standards of performance, reliability, and security across all services.
  • Participate in code reviews, architecture discussions, and technical planning.

  • Required Skills & Experience
    • Strong proficiency in React and modern JavaScript/TypeScript.
    • Solid understanding of OAuth2 flows and third-party authentication integrations.
    • Experience developing API-driven microservices in Python (e.g., FastAPI, Flask, Django REST).
    • Hands-on experience with charting and data visualization libraries (D3.js, HighCharts, or similar).
    • Strong knowledge of API integration and middleware design patterns.
    • Familiarity with software engineering best practices, including CI/CD, testing, and version control (Git).


    Key Skills

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