Full Stack Engineer

We are looking for a Junior OR Mid-Level Full Stack Engineer to join our Global Experimentation team in Barcelona. In this role, you will be instrumental in bridging the gap between user experience and scalable backend services. You will contribute to the design, development, and maintenance of both our critical frontend applications using React and their supporting Backend For Frontend (BFF) services built on Node.js.

You will be fundamental in the evolution of our architecture, ensuring an optimal, performant, and reliable user experience. This role requires proficiency and active contribution across the entire stack, including our core backend services, primarily built with Go (Golang) and the JVM ecosystem. You will leverage AWS Cloud services and ensure complete visibility of our systems through observability tools like Sentry and Grafana.

Our mission is to build a cutting-edge backend infrastructure that supports millions of daily transactions, making performance, reliability, and scalability key aspects of every development process. If you are a creative problem solver looking for an opportunity to work on high-impact global projects, this role is for you.

Responsibilities

• Develop and implement user-facing features and components using React and related technologies under the guidance of senior engineers.
• Write and maintain functional and high-quality code for Backend For Frontend (BFF) services using Node.js to facilitate UI data needs.
• Collaborate on tasks within our core backend services (Go/Java/Kotlin), focusing on implementation and bug fixes in established codebases.
• Work with cross-functional teams (Product and Design) to translate feature requirements into technical implementation plans.
• Ensure code quality and implement unit and integration tests to verify functionality and performance.
• Participate actively in code reviews, providing and receiving constructive feedback to uphold team standards.
• Setting up and leveraging observability tools (Sentry, Grafana) to monitor and troubleshoot application behavior and identify issues.
• Contribute to the ongoing documentation of our frontend and BFF services.
• Learn and apply best practices for building scalable and reliable systems using AWS Cloud Services.

• 1+ to 3 years of professional software development experience, or relevant internship/project experience for Junior Level.
• Strong foundational knowledge of modern JavaScript/TypeScript and practical experience developing applications with React.
• Familiarity with the React ecosystem, including state management and component lifecycle.
• Some practical experience building services with Node.js is preferred.
• Ability to read, understand, and contribute to code in at least one core backend language, such as Go (Golang) or a JVM-based language (Java/Kotlin), or a strong willingness to learn these languages.
• Basic understanding of cloud environments (AWS is a plus).
• Experience with testing frameworks (e.g., Jest, React Testing Library).
• Working knowledge of relational databases (e.g., PostgreSQL, MySQL).
• Good problem-solving skills and a proactive attitude toward learning new technologies.
• Ability to work independently and as part of a team, with excellent communication skills.
• Intermediate to advanced English proficiency is required for effective communication.

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Nice to Have

• Familiarity with microservices architectures and RESTful APIs.
• Experience or adaptability to work with multiple programming languages.
• Exposure to monitoring tools like Sentry, Grafana, or Prometheus.
• Familiarity with Docker and basic deployment concepts.
• Knowledge of Feature Flagging or A/B Testing systems.

As the world’s leading local delivery platform, our mission is to deliver an amazing experience, fast, easy, and to your door. We operate in over 70+ countries worldwide, powered by tech but driven by people. As one of Europe’s largest tech platforms, we enable ambitious talent to deliver solutions that create impact within our ecosystem. We move fast, take action and adapt. No matter where you’re from or what you believe in, we build, we deliver, we lead. We are Delivery Hero. What's in it for you Individuals representing diverse profiles, and abilities, encompassing various genders, ethnicities, and backgrounds, are less likely to apply for this role if they do not possess solid experience in 100% of these areas. Even if it seems you don’t meet our musts don’t let it stop you, we are all about finding the best talent out there! Skills can be learned, and embracing diversity is invaluable. We believe driven talent deserves: * 🌟 An enticing equity plan *if applicable * 💪 Top-notch private health insurance to keep you at your peak. * 🍔 Monthly Glovo credits so you can test new features in our beta app (and to satisfy your cravings!) * 💳 Discounts on transportation, food, and even kindergarten expenses or office-based nursery. * 🏊 Discounted gym memberships to keep you energized. * 🏖️ The freedom to work from home two days a week, and the opportunity to work from anywhere for up to three weeks a year. . * 👪 Enhanced parental leave (*if applicable) * 🧠Online therapy and wellbeing benefits We’ll deliver a non-vanilla culture built on talent, where we work to amplify the impact on millions of people, paving the way forward together. At Glovo, we truly value diversity for the positive impact it brings to our teams, products, and culture. We’re dedicated to providing equal opportunities for talent from all backgrounds. Feel free to note your pronouns in your application (e.g., she/her/hers, he/him/his, they/them/theirs, etc). Delve into our culture by taking a peek at our Instagram and check out our Linkedin and website Here at Glovo, we thrive on diversity, we believe it enhances our teams, products, and culture. We know that the best ideas come from a mashup of brilliant diverse minds. This is why we are committed to providing equal opportunities to talent from all backgrounds – all genders, racial/diverse backgrounds, abilities, ages, sexual orientations and all other unique characteristics that make you YOU. We will encourage you to bring your authentic self to work, fostering an inclusive environment where everyone feels heard. Feel free to note your pronouns in your application (e.g., she/her/hers, he/him/his, they/them/theirs, etc).