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Senior Full-Stack Engineer for Internal App Architecture & Development

Published on the October 31, 2026 in IT & Programming

About this project

Open

We are seeking a highly skilled Senior Full-Stack Engineer to take ownership of the architecture and development of two critical internal applications. Both applications are currently 80% complete and require an experienced professional to finalize their development and ensure their seamless integration into daily operations.

The first application is an invoicing module, which requires integration with Xero and Microsoft Graph for mailbox functionalities. The second application is an owner portal, which needs to integrate with Guesty for statements, a CRM system, and handle onboarding emails.

Both modules have overlapping billing functionalities, necessitating a cohesive architectural approach. The ideal candidate will be responsible for defining and implementing the overall architecture, completing the remaining development tasks, and ensuring both applications are robust, scalable, and ready for daily use. Strong expertise in TypeScript, Node.js, React, and PostgreSQL is essential, along with a proven track record in system architecture and API integrations.

Category IT & Programming
Subcategory Web development
What is the scope of the project? Create a new custom site

Project duration Not specified

Skills needed

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