RentSpree · 5 hours ago
Principal Engineer, LLM Application Development
Seattle, WA
Full-time
Hybrid
Lead/Staff
$280K/yr - $310K/yr
10+ years expRentSpree is the nation's leading home rental software, seeking an exceptional Principal Engineer to lead the development of cutting-edge generative AI and LLM-powered applications. This role involves technical leadership, architectural vision, and ensuring the quality and compliance of mission-critical LLM systems.
PaymentsReal EstateRental PropertySoftware
Responsibilities
Architect, build, and scale complex AI/LLM-driven applications, including workflows, agentic loops, tool-augmented reasoning systems, and other advanced generative AI integrations
Write high-quality, maintainable, and well-tested code that ships to production and evolves through iterative releases
Define core AI architecture patterns, standards, and reusable frameworks to accelerate AI feature delivery across teams
Continuously refine AI tooling and developer workflows for efficiency, quality, and reliability
Establish and lead robust evaluation frameworks to assess model performance, guardrails, safety, fairness, and compliance
Collaborate with cross-functional stakeholders (Security, Legal, Product, Data) to ensure AI features meet ethical, privacy, and regulatory requirements
Serve as a role model and coach, uplifting engineering excellence and AI fluency across the organization
Evangelize best practices for building, validating, and maintaining LLM-based systems
Drive adoption of AI-first software development tools and processes within teams
Partner with Product, Design, and Data Science to define high-impact AI use cases and deliver them with pragmatic execution
Translate complex technical concepts into clear guidance for non-technical audiences
Balance long-term architectural investments with short-term delivery needs
Qualification
Required
10+ years of professional software engineering experience with a strong record of technical leadership
Expertise building and shipping LLM applications and workflows at scale
Demonstrated experience designing agentic systems and/or orchestration loops that integrate multiple AI capabilities and external tools
Proven ability to create evaluation frameworks that ensure safety, reliability, and compliance for LLM-based applications
Experience shipping multiple releases of AI-powered products from prototype through production and iteration
Strong engineering instincts and ability to influence architectural direction
Excellent communication skills with the ability to collaborate across functions
Preferred
Experience with generative AI frameworks (e.g., LangChain, LlamaIndex, Vertex AI, Azure OpenAI, etc.)
Background in distributed systems, platform engineering, or developer tooling
Track record of mentoring senior engineers and fostering a culture of technical excellence
Experience leading adoption of new development paradigms across large engineering organizations
Benefits
Equity Options: Share in the value we’re creating—your work makes a real impact.
Health Coverage: Comprehensive employee + dependent medical, dental, and vision insurance, as well as HSA/FSA options. Plus, enjoy additional health perks like access to Headspace Care+, gym membership discounts, and much more — because your well-being matters, inside and out.
Plan for your future: Life, disability, and Simple IRA retirement plan with company match to support your future.
Flexible Vacation Policy: We trust you to take the time you need to rest and recharge.
Holidays: Enjoy 12 holidays throughout the year, as a part of our commitment to honoring culture, history, and time to recharge.
Events: We make time to connect and celebrate through reimbursable weekly team lunches, game nights, events, and more, both in-person and remotely.
Recognition Programs: Team members can recognize their peers with Sprees, which are redeemable for gift cards and/or donations to an organization of your choice, or nominate a colleague for a S.P.R.E.E. Award to spotlight above-and-beyond contributions, which may be rewarded with a spot bonus. Our Work Anniversary Program also honors employee milestones with personalized tokens of appreciation!
Business Expense Allowance & Internet Reimbursement: Get the tools and support you need to do your best work.
Parental Leave & Fertility Support: Inclusive benefits to support you and your family, wherever you are in life.
Legal & tax benefits: We offer group legal benefits and tax support through RocketLawyer.
Seattle HQ: If you’ll be working from our Seattle office, you’ll receive a company-sponsored Orca card to cover the cost of public transportation to and from the office!
Company
RentSpree
RentSpree provides software with a universal tenant screening process, renter management, partnership programs, and rental screening API.
51-200 employees
H1B Sponsorship
RentSpree has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (3)
2024 (4)
2022 (2)
Funding
Current Stage
Growth StageTotal Funding
$27.72MKey Investors
Green Visor Capital645 Ventures
2022-08-29Series B· $17.3M
2021-07-21Series A· $8M
2020-02-21Seed· $2.3M
Leadership Team
Michael Lucarelli
CEO & Co-founder
Paul Sirisuphang
COO & Co-Founder
Recent News
2026-01-22
Company data provided by crunchbase