Hop logo

Principal AI Architect

Hop

Hybrid
San Francisco, CA
Full-time
Principal
5+ yrs
Salary not listedPosted 4w ago

Real job — pulled straight from Hop’s careers page · Verified July 18, 2026 · No reposts.

Job description

Hop is hiring a Principal AI Architect — a full-time, based in San Francisco, CA role. Apply directly on Hop's careers page below.

Principal AI Architect

Team: Artificial Intelligence

Location: San Francisco, CA

Commitment: Full- Time

Workplace Type: hybrid

Draup is a Series A-funded agentic AI company building the intelligence layer for how global enterprises make workforce and go-to-market decisions. We work with 250+ enterprise clients — including 5 of the Fortune 10 — processing 1B+ job descriptions, 850M+ professional profiles, and signals from 100+ labor databases.

We are now building our Silicon Valley engineering team — a small, senior group focused on next-generation AI research and product.

Location: San Francisco, SoMa — minimum 4 days per week in-office.

What you'll do

• Define and own the architectural vision for next-generation AI systems: novel agent architectures, reasoning systems, and proprietary model development.
• Prototype and evaluate breakthrough AI capabilities — predictive modeling, autonomous signal synthesis, multi-modal intelligence — that create defensible IP.
• Set the technical foundations: data architecture, model serving, agent orchestration, and inference infrastructure for a multi-year product horizon.
• Evaluate and adopt emerging AI paradigms (multi-agent reasoning, RLHF, retrieval-augmented fine-tuning) before they are mainstream.
• Establish engineering standards, architecture review processes, and IP documentation practices for the team.

What we require

• BS/MS/PhD in Computer Science, AI/ML, or related field. PhD or equivalent research depth preferred.
• 5+ years in AI/ML engineering with at least 2 years in a principal engineer or lead architect role.
• Demonstrated history of building original AI systems that became products — not implementations of existing patterns.
• Deep expertise across: LLM training and fine-tuning, agentic system design, knowledge graph construction, large-scale data modeling.
• Comfort operating in greenfield conditions: high ambiguity, high ownership.
• Patents, published research, or shipped products with clear proprietary differentiation are strong signals.
• No visa sponsorship. Must be authorized to work in the US without current or future employer sponsorship.

Get Principal AI Architect jobs like this

New roles from thousands of companies land hourly, straight from their careers pages. Get the freshest matches by email so you never miss one.

Email me new jobs
GoSwift logo

Senior Platform Engineer

Spain
✓ From careers page· 35m ago
Playtech logo

AI Engineer

Sofia, BG
✓ From careers page· 43m ago
ARHS Group logo

Senior Data and AI Engineer

Luxembourg, LU
✓ From careers page· 49m ago
ARHS Group logo

Data & AI Engineer

Luxembourg, LU
✓ From careers page· 49m ago

Frequently asked questions

What skills are required for Principal AI Architect at Hop?

The required skills for Principal AI Architect at Hop include: LLM, Machine Learning, Deep Learning.

What is the seniority level for Principal AI Architect at Hop?

Principal AI Architect at Hop is a Principal level position.

How do I apply for Principal AI Architect at Hop?

You can view the full description and apply for Principal AI Architect at Hop on EchoJobs: https://echojobs.io/job/hop-principal-ai-architect-fevtg.