Founding Product Engineer

Rex is seeking a Founding Product Engineer to build the core of its real estate ERP, an AI-first platform that becomes the single source of truth across the business.

Requirements

• 5-8+ years of experience in software engineering, with progression into product leadership or technical product ownership roles
• Strong engineering foundation with proficiency in modern programming languages such as TypeScript, Python, or similar
• Experience building and shipping complex, data-intensive systems where correctness and reliability are critical
• Background in fintech, accounting systems, ERP platforms, or infrastructure software strongly preferred
• Familiarity with accounting principles, financial reporting, and compliance requirements, or demonstrated ability to learn quickly and operate with precision
• Strong product instincts with the ability to translate user needs into clean, effective system design
• Demonstrated ability to operate with ownership in ambiguous, zero-to-one environments
• High standards for code quality, system integrity, and user experience
• Strong communication skills with the ability to work cross-functionally with technical and non-technical stakeholders
• Builder mindset with a focus on durability, correctness, and long-term system value over short-term wins
• High agency, persistence, and bias toward action in solving hard problems

Benefits

• Comprehensive health, dental, and vision insurance
• 401(k) with company matching
• Fully remote work environment