Senior ML Ops Engineer — Marketplace Backend

Apartment List, Inc.; Northern (KY); Hybrid; USD 130,000 - 170,000; Full time

Job summary

Apartment List, Inc. is seeking a Senior Software Engineer II for the Lister team, owning core services from backend Kotlin/Ruby to frontend TypeScript/React. You will shape technical direction and be a reference point for other engineers through code reviews and design discussions.

The role emphasizes building scalable, high-quality systems and mentoring teammates, working cross-functionally with product, design, and analytics to deliver impactful features.

Qualifications

• 5+ years of professional software engineering experience in scalable, quality-focused orgs.
• Strong grounding in computer science fundamentals — data structures, algorithms, and distributed systems
• Experience designing and implementing RESTful APIs
• Experience with relational databases and data modeling
• Working proficiency in Kotlin, Ruby, or TypeScript, with willingness to learn the others
• Experience across backend and frontend stacks
• Practical experience using AI-assisted development tools to speed up real engineering work
• Demonstrated ability to communicate and collaborate effectively with product managers, designers, and analysts

Responsibilities

• Own design and delivery of scalable backend services powering the Lister experience, from architecture decisions through production reliability.
• Drive full-stack feature delivery — from Kotlin/Ruby services to TypeScript/React interfaces — in close partnership with product, design, and analytics.
• Shape technical solutions for ambiguous problems, balancing speed with long-term maintainability.
• Partner with engineering teams across Apartment List to keep solutions consistent for renters and partners.
• Raise the technical bar through code reviews, pairing, and design discussions — mentoring engineers earlier in their careers.
• Contribute to Lister's technical roadmap, surfacing tradeoffs and opportunities to leadership.

Skills

5+ years experience

CS fundamentals

REST APIs

Relational DBs

Kotlin/Ruby/TS

Full-stack

AI-assisted tools

Team collaboration

Tools

Copilot

Job description

Apartment List, Inc. is seeking a Senior Software Engineer II for the Lister team, owning core services from backend Kotlin/Ruby to frontend TypeScript/React. You will shape technical direction and be a reference point for other engineers through code reviews and design discussions.

The role emphasizes building scalable, high-quality systems and mentoring teammates, working cross-functionally with product, design, and analytics to deliver impactful features.