> Markdown version of [/jobs/ext/2946669-principal-full-stack-engineer](https://www.wearedevelopers.com/jobs/ext/2946669-principal-full-stack-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Full Stack Engineer - **Company:** Slater Infrastructure Group, LLC - **Location:** United States (Remote available) - **Experience:** Expert - **Salary:** $125,000.0 - $185,000.0 - **Contract:** Permanent contract - **Skills:** Adobe InDesign, Application Programming Interfaces (APIs), Artificial Intelligence, Code Review, Continuous Integration, Learning Management Systems, Document-Oriented Databases, Amazon DynamoDB, MongoDB, Node.Js, Next.js, Web Content Accessibility Guidelines, Web Services, ReactJS, Firebase, Build Management, Production Code, Software Coding, Serverless Computing - **Published:** September 16, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=ca375438e01fb29d ## About the Role * 10+ years building production software, several of them at principal, staff or equivalent technical-lead level. * Has been accountable for the architecture of a production system, and lived with the consequences of those decisions. * Deep JavaScript and TypeScript, with real depth in React on the front end and Node / Express on the back end. * Production experience with a cloud-hosted document database - Firestore, MongoDB, DynamoDB or similar. * Has raised the technical level of a team through review, mentoring and standards, without formal authority to do it. * Has shipped production features built on generative AI APIs, with hands-on experience using Claude. * Has been the most senior engineer in the room, and been right often enough that people stopped checking. * Wants a hands-on coding role. This is not a route into engineering management. Nice to have * Experience with other generative AI APIs alongside Claude - Gemini, OpenAI or similar. * Vercel, serverless or edge deployment experience. * EdTech, LMS, credentialing or regulated-training background. * Infrastructure as code, and ownership of a CI/CD pipeline. * Accessibility standards (WCAG) applied in practice rather than in theory. ## Description Hands-on engineering - 100% of this role * Write production code every day. This is not a role that stops coding, and it is not a step toward management. * Build the hardest parts of the platform personally. * Design and build the APIs and services the rest of the platform depends on. * Work across React, Express, Firestore and the Vercel deployment path. Architecture and technical input * Architectural direction is set by the CTBO. You are the senior engineering voice in those decisions. * Bring options, trade-offs and a recommendation - not just an implementation once the decision has been made. * Document how the platform actually fits together, and keep that picture current. * Weigh what ships this quarter against what the platform will need in two years. AI and the product * Build and extend the platform on top of G.A.I.L., our generative AI tutor. * Advise on where generative AI genuinely improves the learning product and where it does not. Engineering excellence * Set and hold coding standards, review practice and the definition of done. * Mentor engineers directly, in code review and in design. * Improve the release path so that deploying is routine rather than an event. * Support hiring - interview, calibrate, and help build the team. Security, compliance and reliability * Build authentication and authorization correctly. * Build to FERPA expectations for learner data and to the standards our state approvals depend on. * Instrument the platform so failures surface before a learner reports them. ## Related Videos - [Stop using Node.js like in 2020! 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