Principal Full Stack AI Engineer at Validity
Boston, MA
$200,000–$220,000from the description
Jul 20, 2026
Boston, MA
Jul 22, 2026
What this job asks for AI summary
A senior individual-contributor engineering role focused on building full-stack features and agentic AI systems for email marketing products. Day-to-day work spans architecting and shipping React/Next.js/TypeScript/PostgreSQL features, reviewing AI-generated code to maintain production quality, and setting technical direction across concurrent workstreams. Suited to an experienced engineer with a strong background in both full-stack development and hands-on agentic AI system design.
Senior level · 10+ years · Boston, MA · Full-time
Advertised as Principal, but the requirements read as Senior.
We read this from the posting text with AI. Skim the description below before ruling yourself out.
How this req sits in the market our data
Roughly 540 people in the Boston, MA area plausibly meet what this posting asks for (software developers). range 290–710
Applicant volume Moderate — A normal amount of company. The rare requirements below are what will separate a shortlisted application from the rest.
Most people in this occupation already list these. Still required — just not what gets you shortlisted.
What the occupation pays Median $169,742 (middle half $134,780–$187,781). This posting is about at that midpoint.
Estimated from BLS employment for this occupation and area, per-skill prevalence across our listing corpus, and published wage benchmarks — as of Jul 28, 2026. It is a model, not a headcount.
Why we read it this way (4)
The title says 'Principal' but the actual requirements — 10+ years of experience, full-stack ownership, technical direction-setting within a team — are consistent with a Senior engineer. The role does not describe org-wide or cross-org architectural authority typical of a true Principal band, so seniority is assessed as Senior.
Remote status is not stated in the posting. The company is headquartered in Boston with offices in Denver, London, São Paulo, and Sydney, but no explicit remote or hybrid policy is mentioned — remote is marked false as a conservative default.
The '0-to-1 projects' history appears only under Preferred Experience and is a general background signal rather than a named technology, so it is not captured as a skill.
Agentic AI systems (2+ years) is listed as a hard requirement; 'agentic AI' is captured as the skill name since no specific framework or platform is named.
Read the full posting
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