Senior Software Engineer - Applications

ApartmentIQ is a profitable, growth-stage company building industry-leading martech and data products for the PropTech space. They are seeking experienced full-stack engineers to build AI-native products, taking ownership of features from data layer to API to interface.

Responsibilities:

• Own features end-to-end—data model, Rails API, and front end—in a fast-paced, agile environment
• Build product surfaces on top of LLMs and agents: ingestion, structured data, and UIs for reviewing and verifying AI-generated output
• Partner with a team lead or AI Engineer to take greenfield problems from ambiguous idea to shipped feature
• Engage with product leadership on what to prioritize and how to scope it

Requirements:

• 6+ years of experience as a full-stack software engineer
• Strong Ruby on Rails experience, including designing and building APIs
• Proficiency with JavaScript / ES6 and a modern front-end framework (React preferred)
• Comfort working across the full stack, including relational databases (MySQL)
• Experience building products utilizing agentic workflows: prompting, handling non-deterministic output, and designing for human-in-the-loop review
• Solid understanding of fundamental web technologies such as HTTP, REST, and JSON
• Ability to break down complex, ambiguous problems into digestible, shippable chunks
• Thrive in fast-paced startup environments and adapt quickly to changing priorities
• Data pipeline / ingestion and processing work—pulling in raw apartment rental data from XML files or APIs and transforming it into compelling content that helps renters choose their next home
• Experience with agentic frameworks, RAG, or LLM tool-use
• React ecosystem depth (Redux and similar) and strong product/UX taste
• Experience working with designers and AI engineers to build beautiful, intuitive front-end experiences
• Taste in modern trends of front-end development and a desire to build simple, user-focused UX