> Markdown version of [/jobs/ext/2935381-full-stack-developer-remote](https://www.wearedevelopers.com/jobs/ext/2935381-full-stack-developer-remote). 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). --- # Full-Stack Developer (Remote) - **Company:** Hired - **Location:** Valencia, Spain (Remote available) - **Contract:** Permanent contract - **Skills:** Clean Code Principles, JavaScript (Programming Language), Artificial Intelligence, Node.Js, TypeScript, ReactJS, Backend, Vue.js, AngularJS, Front End Software Development, NestJS - **Published:** September 16, 2026 - **Apply:** https://www.buscojobs.com.es/full-stack-developer-remote-en-valencia-ID-372149385 ## About the Role Lead efforts in supervised fine-tuning, including creating and maintaining high-quality, task-specific datasets.Required Skills & Qualifications: - Proficiency in JavaScript and TypeScript for full-stack development. - Experience with Node.Js for backend development. - Familiarity with Nest.Js as a progressive Node.Js framework. - Knowledge of front-end frameworks such as React, Vue.Js, or Angular. - Ability to write readable, reusable, and maintainable code.More About the Opportunity:This role offers a unique opportunity to work with a global leader in AI technology, contributing to the advancement and deployment of powerful AI systems. You will collaborate with cross-functional teams to improve model performance and contribute to product enhancements.Equal Opportunity Employer:We hire based on skills and expertise. All qualified candidates are welcome regardless of background, experience, or prior employment history. Applications are reviewed solely on demonstrated technical ability and qualifications.Apply Now! ## Description Role: Full-Stack Developer (Remote)Location: Remote (Work from Anywhere)Role Overview:We are hiring for one of our clients, seeking a JavaScript / TypeScript Full-Stack Developer to work on a full-time basis.The role involves designing, developing, and maintaining efficient, high-quality code to train and optimize AI models.You will conduct evaluations to benchmark model performance and analyze results for continuous improvement.Key Responsibilities: - Design, develop, and maintain efficient, high-quality code to train and optimize AI models.- Conduct evaluations to benchmark model performance and analyze results for continuous improvement.- Evaluate and rank AI model responses to user queries across diverse domains, ensuring alignment with predefined criteria.- Develop comprehensive explanations and rationales for evaluations, showcasing excellent reasoning and technical expertise.- Lead efforts in supervised fine-tuning, including creating and maintaining high-quality, task-specific datasets.Required Skills & Qualifications: - Proficiency in JavaScript and TypeScript for full-stack development.- Experience with Node.Js for backend development.- Familiarity with Nest.Js as a progressive Node.Js framework.- Knowledge of front-end frameworks such as React, Vue.Js, or Angular.- Ability to write readable, reusable, and maintainable code.More About the Opportunity:This role offers a unique opportunity to work with a global leader in AI technology, contributing to the advancement and deployment of powerful AI systems.You will collaborate with cross-functional teams to improve model performance and contribute to product enhancements.Equal Opportunity Employer:We hire based on skills and expertise.All qualified candidates are welcome regardless of background, experience, or prior employment history.Applications are reviewed solely on demonstrated technical ability and qualifications.Apply Now! ## Related Videos - [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) - [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) - [Hiring AI Native Talents](https://www.wearedevelopers.com/videos/100268-hiring-ai-native-talents) - [Lessons learned from building a thriving Vue.js SaaS application](https://www.wearedevelopers.com/videos/1666-lessons-learned-from-building-a-thriving-vue-js-saas-application) - [Streaming AI Responses in Real-Time with SSE in Next.js & NestJS](https://www.wearedevelopers.com/videos/1630-streaming-ai-responses-in-real-time-with-sse-in-next-js-nestjs) - [Common Mistakes in Vue.js and How to Avoid Them](https://www.wearedevelopers.com/videos/958-common-mistakes-in-vue-js-and-how-to-avoid-them) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Best Job Boards for Remote Work for Developers](https://www.wearedevelopers.com/magazine/290-best-job-boards-for-remote-work-for-developers)