Frontend Engineer

Help Us Build The Future of Travel At Cobalt Streamworks , we're making it easier for people to stay connected wherever they travel. As the world's first eSIM store, we help millions of travelers access affordable mobile data in 200+ countries and regions around the world. Today, we're a team of 400+ people across 60+ countries, building a product used by travelers every day. We've grown quickly, but we've worked hard to keep what matters: trust, ownership, and the freedom for people to do great work without unnecessary layers or bureaucracy. We're fully remote by design, genuinely global, and united by a shared mission to make travel simpler for everyone. Your Next Destination Location: Remote, anywhere in Spain or the UK. Contract: Spain: Full-time, permanent contrato indefinido via Deel (our employer of record in Spain) UK: Full-time, permanent Benefits: Learn more about our benefits here in this link - https://airalo-public.notion.site/Benefits-25396a97ffca81fb9bc1f0be479f1be3?pvs=74 Languages: English is our main working language day to day, so you'll need to be comfortable communicating in it both in meetings and async. We are looking for a proactive Frontend Engineer to join our expert team in evolving our core platform. You will focus on building high-quality, scalable components and delivering seamless user experiences that help connect travelers worldwide. We value developers who are detail-oriented, collaborative, and passionate about writing clean, maintainable code in a fast-paced environment. Your Main Responsibilities: Feature Development: Build and maintain high-quality software components and scalable features based on product specifications. Performance & SEO: Optimize user interaction and improve SEO to ensure a fast, responsive, and seamless single-page application (SPA). Code Quality: Apply unit testing, SOLID principles, and clean code practices to ensure the long-term health of the codebase. Collaboration: Work closely with cross-functional teams (Product, Design, and Backend) to estimate tasks, provide progress updates, and troubleshoot technical issues. Implementation: Translate business requirements into elegant frontend code using modern build pipelines and tools. Does This Sound Like You: 3–5 years of professional frontend experience with strong proficiency in JavaScript and CSS . 2+ years of hands-on experience building SPAs using VueJS . Good understanding of OOP , SOLID principles, and common design patterns. Solid experience working with RESTful services , Git , and containerization tools like Docker . AI Proficiency: Ability to effectively use AI tools during technical tasks; we value engineers who know how to prompt, validate, and iterate with AI to build better software faster Experience writing automated tests (unit/integration) and a strong eye for responsive, cross-browser compatible design . Familiarity with Agile methodologies and working in a sprint-based environment. Fluent English with the ability to communicate technical concepts clearly to both technical and non-technical teammates. Bonus: Knowledge of UI/UX best practices and experience with A/B testing . Experience in TravelTech , eSIM , or GSMA technologies. Familiarity with cloud application architectures (AWS/GCP). Why People Join Us 🇪🇸 Why people join us in Spain We started Cobalt Streamworks to make staying connected effortless, wherever you are in the world. Today, millions of travelers rely on our eSIMs, and many of the people building the product were customers first. Our team is united by a shared belief that great work happens when people are trusted to own what they do. As Cobalt Streamworks continues to grow, so do the opportunities to learn, take on new challenges, and make a real impact. For many of our teammates in Spain, it's the combination of stability, flexibility, and genuine work-life balance that makes Cobalt Streamworks feel like home. 🇬🇧 Why people join us in the UK We started Cobalt Streamworks to make staying connected effortless, wherever you are in the world. Today, millions of travelers rely on our eSIMs, and many of the people building the product first discovered us as customers. Our team spans 60+ countries, but what people often notice quickly is how work actually feels here. There's trust to own what you do, space to focus without constant layers of process, and a clear sense of what you're responsible for from day one. As Cobalt Streamworks continues to grow, people tend to stay for a mix of things: the chance to work on a product used globally, the autonomy to shape how they work, and the opportunity to keep taking on new challenges without getting stuck in one lane. Before You Hit Apply By applying, you acknowledge and agree that, in case of successful application, Cobalt Streamworks may request to run background checks as a condition for entering into an agreement with you. Rest assured that these checks will only occur upon your prior consent and at the end of the selection process, and will be strictly limited to what is allowed under the laws that a