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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Full Stack AI Engineer - **Company:** Validity Inc - **Location:** Boston, MA, United States (Remote available) - **Experience:** Experienced - **Salary:** $200,000.0 - $220,000.0 - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Code Review, PostgreSQL, Next.js, TypeScript, ReactJS - **Published:** July 22, 2026 - **Apply:** http://validity.applytojob.com/apply/jobs/details/r6SkAGkFrx ## About the Role * 10+ years of engineering experience shipping impactful products * Deep full-stack experience with React, Next.js, TypeScript, and PostgreSQL * 2+ years building agentic AI systems * Demonstrated ability to work across multiple projects simultaneously, leveraging agents to multiply output * Strong code review skills with the judgment to maintain high quality in an AI-assisted development environment * Strong product sense - you understand the product and what users want * Excellent systems design - you architect for clarity, maintainability, and scale * Bias toward action and rapid decision-making Who You Are * A doer - hands-on with code and experiments daily * A quality gate - you care about getting it right, and you know AI-generated code needs sharp review * Fast and intelligent - you learn fast, make smart decisions quickly, and iterate * An AI-native builder - agentic tools are part of how you work, not an afterthought * Experimentation-obsessed - you validate through building * Comfortable with ambiguity - you forge ahead when the path isn't clear * Collaborative - you thrive on code review and learning from others * Hard-working and motivated - you put in the effort and take pride in what you ship Preferred Experience, Skills, and Education * History of 0-to-1 projects ## Description We're building the next generation of email marketing tools at Validity. AI is central to how we build - we develop with agents daily - and to what we build, shipping AI-powered features that help our customers succeed., * Quickly build and ship full-stack features * Design and deploy agentic AI systems that solve real user problems * Work across multiple projects simultaneously, using agents to maintain velocity and context across concurrent workstreams * Perform rigorous code review - especially of AI-generated code - ensuring production-grade quality, security, and systems design * Set technical direction through architecture decisions, prototypes, and rapid experimentation * Help define and improve evaluation for agent-powered features * Move from idea to production-ready implementation at speed * Work closely with product managers, shipping, learning, and iterating, For over 20 years, tens of thousands of organizations across the world have relied on Validity solutions to target, contact, engage, and retain customers - using trustworthy data as a key advantage. Validity's flagship products - Everest, DemandTools, BriteVerify, and GridBuddy Connect - are all highly rated, #1 solutions for sales and marketing professionals. These solutions deliver smarter email campaigns, more qualified leads, more productive sales, and ultimately faster growth. ## Related Videos - [Hiring AI Native Talents](https://www.wearedevelopers.com/videos/100268-hiring-ai-native-talents) - [Optimizing Discovery: PostgreSQL's Role in Transforming GetYourGuide's Search](https://www.wearedevelopers.com/videos/1647-optimizing-discovery-postgresql-s-role-in-transforming-getyourguide-s-search) - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) - [Postgres in the Age of AI (and Devin)](https://www.wearedevelopers.com/videos/1042-postgres-in-the-age-of-ai-and-devin) - [Discover the open source trio you didn’t expect: .NET and PostgreSQL on Linux](https://www.wearedevelopers.com/videos/2042-discover-the-open-source-trio-you-didn-t-expect-net-and-postgresql-on-linux) ## Related Articles - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [What is Agentic Programming and Why Should Developers Care?](https://www.wearedevelopers.com/magazine/625-what-is-agentic-programming-and-why-should-developers-care) - [Never delegate the understanding](https://www.wearedevelopers.com/magazine/749-never-delegate-the-understanding) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 137 - AI'm not sure about this](https://www.wearedevelopers.com/magazine/485-dev-digest-137-ai-m-not-sure-about-this)