> Markdown version of [/jobs/ext/2067426-mid-senior-frontend-full-stack-engineers](https://www.wearedevelopers.com/jobs/ext/2067426-mid-senior-frontend-full-stack-engineers). 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). --- # Mid-Senior Frontend & Full-Stack Engineers - **Company:** Owen Thomas | B Corp - **Location:** Spain (Remote available) - **Salary:** €65,000.0 - €91,000.0 - **Contract:** Temporary contract - **Skills:** Testing (Software), Clean Code Principles, JavaScript (Programming Language), PHP (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, HTML5, Browser Compatibility, Business Software, Cascading Style Sheets (CSS), Software Quality, Code Reuse, Code Review, Relational Databases, Cursor (Graphical User Interface Elements), Software Debugging, Laravel, PostgreSQL, MySQL, Package Management Systems, Performance Tuning, PHP Development, Software Architecture, Redis, Next.js, Responsive Web Design, Software Systems, Symfony, TypeScript, Web Applications, ReactJS, Backend, Git, Gatsby, Front End Software Development, Restful APIs, Docker - **Published:** August 15, 2026 - **Apply:** https://es.trabajo.org/oferta-9000-28e88adaf4345cb20dc996587f10359d ## About the Role Git-based development workflows* Frontend tooling, package managers, and modern development practices* TypeScript experience or a strong interest in working with TypeScript* Browser debugging, testing, and performance op timisation* Writing clean, maintainable, and reu sable code* Working effectively within agile pro duct teams* Using AI development tools such as Cursor or similar Experience in one or more of the following is highly desirable:* React, Next.js, Gatsby, Nuxt, or similar frontend frameworks* PHP development using Symfony and /or Laravel* Designing and consumin g REST APIs* Relational databases such as MySQL or PostgreSQL* Docker and containerised developmen t workflows* Redis, OpenSearch, or similar t echnologies* Software testing and quality assurance bes t practices* Backend architecture and full stack application development* Fluent Spanish communication skills (written and spoken)* Intermediate English communica tion skills Why This Contract Stands Out? * €250-350 per day (B2B via Deel) - the rate depends on skill and seniority level and on performance in the interview* Fully remote within Europe* 6-months rolling contract, with no end date - this can roll on potentially indefinitely, with 1-2 years wor ## Description Ended Long-term Cont ract This role offers flexibility depending on your strengths and experi ence. Engineers with stronger frontend expertise will spend most of their time building modern user interfaces and customer experiences, while engineers with full stack experience will also contribute to backend systems, APIs, and application archite cture. Youll be expec ted to:* Develop modern web applications and digital experiences using JavaScript, HTML5, CSS3, and modern frontend tooling* Build responsive user interfaces for customer-facing platforms and interna l tools* Collaborate with Product Managers, Designers, QA teams, and other engineers to deliver high-quality software so lutions* Write clean, maintainable, and reusable code aligned with engineering best pr actices* Participate in code reviews and contribute to improving development standards and pr ocesses* Build and integrate APIs and backend services where r equired* Work with PHP-based applications and frameworks such as Symfony or Laravel* Support containerised development workflows using Docker* Perform testing, debugging, troubleshooting, and performance optimisation act ivities* Utilise AI-assisted development tools such as Cursor to improve productivity and d elivery* Contribute to continuous improvement initiatives across software quality, user experience, and engineering pr ocesses* Work closely with stakeholders to understand requirements and deliver busines s value This role suits engineers who enjoy collaborative product development, solving real-world problems, and working across modern web techn ologies. Mid-Senior Frontend & Full-Stack Engineers | TypeScript, Next.js, PHP Symfony/Laravel, Docker, AI Tools | €250-350/day | Remote (EU) | Spanish Speaking | Open Ended Long-term Contract Strong commercial experi ence with:* JavaScript and modern frontend d evelopment* HTML5, CSS3, responsive design, and cross-browser com patibility* Building modern web applications and user interfaces* ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Reducing LLM Calls with Vector Search Patterns - Raphael De Lio (Redis)](https://www.wearedevelopers.com/videos/1714-reducing-llm-calls-with-vector-search-patterns-raphael-de-lio-redis) - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [WeAreDevelopers LIVE – AI, Freelancing, Keeping Up with Tech and More](https://www.wearedevelopers.com/videos/1786-wearedevelopers-live-ai-freelancing-keeping-up-with-tech-and-more) - [Branch your database like your code: How schema changes and pull requests go hand in hand](https://www.wearedevelopers.com/videos/350-branch-your-database-like-your-code-how-schema-changes-and-pull-requests-go-hand-in-hand) - [Coding for Good: Achieving social change with an app](https://www.wearedevelopers.com/videos/1645-coding-for-good-achieving-social-change-with-an-app) ## 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) - [Frontend Developer Salary in The UK](https://www.wearedevelopers.com/magazine/233-frontend-developer-salary-in-the-uk) - [Best Job Boards for Remote Work for Developers](https://www.wearedevelopers.com/magazine/290-best-job-boards-for-remote-work-for-developers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Frontend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/195-frontend-developer-salary-in-germany-2023)