> Markdown version of [/jobs/ext/2837856-software-engineer-i-frontend](https://www.wearedevelopers.com/jobs/ext/2837856-software-engineer-i-frontend). 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). --- # Software Engineer I - Frontend - **Company:** Ookla - **Location:** Spain - **Salary:** €48,000.0 - €65,000.0 - **Contract:** Permanent contract - **Skills:** Clean Code Principles, HTML, JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Amazon Web Services, Automation of Tests, Cascading Style Sheets (CSS), Cloud Computing, Code Review, Data Stores, Relational Databases, Software Debugging, Python (Programming Language), Node.Js, OpenLayers, Ruby, Standard Sql, Software Engineering, Strategies of Testing, TypeScript, Web Content Accessibility Guidelines, Web Applications, Data Processing, ReactJS, Vue.js, Webpack, AngularJS, Material UI, Information Technology, Front End Software Development, React Redux, React Testing Library, JestJS, Restful APIs, Golang - **Published:** September 11, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=d85480fd4282a0bc ## About the Role * Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field or equivalent working experience * Some exposure to frontend frameworks like React, AngularJS, VueJS, etc. * Understanding of modern JavaScript, HTML, CSS, and other front-end technologies * Experience writing automated tests and understanding/recommending various testing strategies; Vitest, React Testing Library (RTL) experience preferred * Strong communication and collaboration skills * Ability to work independently as well as in a team environment * Excellent problem-solving, algorithmic, and analytical skills * Ability to thrive in a fast-paced, dynamic environment * Detail-oriented, both visually and logistically * Self-motivated, with a proven track record of meeting or exceeding expectations on deliverables Nice to have: * Experience with various mapping libraries like MapboxGL (preferred), Leaflet.js, or OpenLayers * Much preferred to have experience with TypeScript * Experience with Material UI (MUI) * Basic understanding of monorepos and the infrastructure required to support them * Understanding of Accessible user experiences in web applications (WCAG 2.2) * Experience using AWS or similar cloud computing environments to build and scale a web application * Familiarity with storing data in relational databases and writing SQL * Experience writing APIs or other code in NodeJS, Go, Python, or Ruby * Comfort with collaborating with a design team, providing suggestions and feedback while iterating on UX designs ## Description We are seeking a talented Software Engineer to join a team of passionate engineers that are tasked with the unique opportunity to build next-generation platforms that will pave the path for many other teams at Ookla to follow. This team manages Ookla's flagship enterprise products, the most prominent of which provides a whole new way to combine data from different sources to visualize, analyze, and inspire real-world action to improve connectivity, and is a centerpiece in Ookla's strategy to bring connectivity insights to a wide array of industries and geographies. The modern era has made telecommunications essential to daily life. While our target markets are government entities that are striving to invest and improve broadband access and performance in their jurisdictions along with network operators that are seeking to maximize their revenue opportunities through thoughtful investments in their network, there are many potential customers that could benefit from our products and services., * Develop and maintain robust and scalable web applications using React, Redux (RTK Toolkit), and Vite * Collaborate with cross-functional teams to design, develop and implement new features and functionalities for our data visualization platforms and portals * Write clean, maintainable, and efficient code and adhere to best practices in software development * Conduct code reviews, debugging, and troubleshooting to ensure the quality of the codebase * Help develop, maintain and test RESTful APIs for data processing and handling * Participate in agile development methodologies and contribute to continuous improvement initiatives * Troubleshoot and resolve complex software issues, identifying and implementing solutions in a timely manner * Eye for detail and knack for noticing and perfecting subtle interactions and fine points that impact user experience * Harness AI tooling for speeding up development while still emphasizing human oversight * Stay up-to-date with emerging trends and technologies in full-stack web development and apply them to our stack ## Related Videos - [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Coffee with Developers: David Heinemeier Hansson](https://www.wearedevelopers.com/videos/875-coffee-with-developers-david-heinemeier-hansson) - [Go with the Flow: Stop the Leaks Before Your Memory's a Waterfall!](https://www.wearedevelopers.com/videos/100073-go-with-the-flow-stop-the-leaks-before-your-memory-s-a-waterfall) - [NoLoJS - Avoiding JavaScript Cruft with HTML and CSS - Aaron T. Grogg](https://www.wearedevelopers.com/videos/1806-nolojs-avoiding-javascript-cruft-with-html-and-css-aaron-t-grogg) - [Web development best practices in 2021](https://www.wearedevelopers.com/videos/280-web-development-best-practices-in-2021) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [Frontend Developer Salary in The UK](https://www.wearedevelopers.com/magazine/233-frontend-developer-salary-in-the-uk) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london)