> Markdown version of [/jobs/ext/2240339-principal-mobile-first-fullstack-engineer-agentic-ai](https://www.wearedevelopers.com/jobs/ext/2240339-principal-mobile-first-fullstack-engineer-agentic-ai). 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 Mobile-First Fullstack Engineer (Agentic Ai) - **Company:** Sklum - **Location:** Valencia, Spain - **Contract:** Permanent contract - **Skills:** Next.js, ReactJS, Backend, React Native, Virtual Agents - **Published:** August 26, 2026 - **Apply:** https://www.buscojobs.com.es/principal-mobile-first-fullstack-engineer-agentic-ai-en-valencia-ID-369022674 ## About the Role SKLUM is building a mobile-first fullstack app. You will be a hands-on principal engineer guiding the mobile experience from React Native to backend services, collaborating with backend and data teams to ship features end-to-end. We value deep React Native expertise, strong backend API design, and experience with web tech (React/Next.js). English fluency and cross?cultural collaboration are essential. #J-*****-Ljbffr ## Description SKLUM is building a mobile-first fullstack app. You will be a hands-on principal engineer guiding the mobile experience from React Native to backend services, collaborating with backend and data teams to ship features end-to-end.We value deep React Native expertise, strong backend API design, and experience with web tech (React/Next.js). English fluency and cross?cultural collaboration are essential.#J-*****-Ljbffr ## Related Videos - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [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) - [Supercharge Agentic AI Apps: A DevEx-Driven Approach to Cloud-Native Scaffolding](https://www.wearedevelopers.com/videos/1604-supercharge-agentic-ai-apps-a-devex-driven-approach-to-cloud-native-scaffolding) - [Nest.js - TypeScript in the backend can also be clean](https://www.wearedevelopers.com/videos/1033-nest-js-typescript-in-the-backend-can-also-be-clean) - [Hiring AI Native Talents](https://www.wearedevelopers.com/videos/100268-hiring-ai-native-talents) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [What is Agentic Programming and Why Should Developers Care?](https://www.wearedevelopers.com/magazine/625-what-is-agentic-programming-and-why-should-developers-care) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 132 - Binging WADFlix?](https://www.wearedevelopers.com/magazine/473-dev-digest-132-binging-wadflix) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift)