Senior Software Developer – Platform & Complex Systems

(Senior / Lead Individual Contributor – Multi‑Track Job Posting)

About This Job Posting

This job posting is designed to attract senior-level software developers, data professionals, and technical specialists to join Landmark, where we build and evolve platforms and complex systems operating on a global scale.

This is a technology‑first opportunity, focused on deep technical challenges related to system architecture, scalability, performance, data, and reliability — far beyond standard application development.

This is one job posting covering multiple technical tracks (roles). Candidates must select the technical track that best matches their background when applying. Mandatory application questions will guide this selection.

What You Will Work On

• Design, develop, test, and maintain complex software platforms and systems
• Work on large‑scale, distribu...