Job brief: Senior Principal Software Development Engineer, Consumer AI Architect

What JoRoute checked · Checked by JoRoute

• Listed on CarGurus's own job board. JoRoute does not take listings from job ads or recruiters.
• First seen by JoRoute 2026-11-04 (4 days ago); last confirmed on the board 2026-11-08.
• The apply link opens careers.cargurus.com, the address CarGurus's board gives for this job.
• No other listing with this title and place on this board in the last 90 days.
• No layoff notices (WARN) under this name in the state files JoRoute reads.

What the listing says · Employer's own words, not checked

• Pay: $191,000 to $239,000 a year
• Job type: Not stated
• Where: Boston, Massachusetts, United States · Boston (1001 Boylston Street)
• Posted: 2026-08-18 · over 60 days ago

What the job asks · Employer's own words, not checked

Level: Lead / staff. The title says "Principal".

Must have

• In fact, we’re the largest and fastest-growing automotive marketplace, and we’ve been profitable for over 15 years.
• 10+ years of experience architecting resilient, scalable systems and leading technical direction across multiple teams with extensive experience designing, implementing, and deplo…

Conditions

• A flexible hybrid model and robust time off policies encourage work-life balance and individual well-being.
• Please be aware that travel expenses are the responsibility of the candidate.
• We do not discriminate based on race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, gender identity, or sexu…

Main duties

• Design, build, and deploy consumer-facing experiences end-to-end to 45 million monthly visitors, from the data and model layer through to the user-facing pro…
• Serve as a go-to AI expert and advisor for all Consumer AI projects, providing technical guidance on architecture, design, and implementation choices
• Guide the platform and infrastructure decisions underpinning AI deployments, including storage, memory, request handling and load, evaluation pipelines, obse…
• Evaluate the broader AI framework and tooling landscape, independent of any single language or ecosystem, and guide teams toward the right approach for a giv…
• Build and operate systems using LangChain, LangGraph, and Langfuse in Python to develop, orchestrate, and evaluate agentic and LLM-based applications in prod…

Lines copied from the posting, not rewritten. "Preferred" or "nice to have" items are not listed as must-haves.

How it compares · Compared by JoRoute from listings

• Typical listed pay for software engineer jobs in Boston, MA: $189k a year (85 listings, 10 employers). This listing is 14% higher.
• Across CarGurus's 38 open listings, 45% of those with a posting date were first posted more than 60 days ago. How CarGurus hires

What nobody outside the employer knows · Not known

• Whether the role is already filled or on hold: employers often leave listings up.
• How many people applied, and who reads the applications.
• Where in the published range an offer would land.

Ask before you apply

1. Is this role still open, and when do you hope to fill it?
2. Which of the listed places is this role based in?
3. What are the interview steps, and when should I expect to hear back?

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Next steps

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