Senior Frontend Software Engineer at KingMakers

Madrid, Community of Madrid, Spain -

Full Time

Start Date

Immediate

Expiry Date

25 Dec, 25

Salary

0.0

Posted On

26 Sep, 25

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

CSS, UI Design Principles, React, TypeScript, JavaScript, RESTful APIs, Unit Testing, Jest, Frontend Architectural Patterns, CMS Platforms, Strapi, Umbraco, Cloudflare, Vercel, Package Managers, PNPM, Yarn

Industry

Gambling Facilities and Casinos

Description

About us: At KingMakers, we’re not just building products; we’re redefining how millions of sports fans across Africa experience entertainment. Our mission is simple yet ambitious: to deliver seamless, 24/7 digital sports and gaming experiences that bring people closer to the games they love, online and offline. The Role: As a Senior Front-end Software Engineer, you’ll play a key role in ensuring our products are highly resilient, low-latency, and provide an exceptional customer experience. You’ll work closely with Product Managers and a world-class engineering team to develop and optimize our gaming platforms, contributing to our rapid growth. We’re looking for someone who thrives on solving complex challenges, embraces cutting-edge engineering practices, and has a passion for creating reliable, high-performance systems. In this role, you’ll collaborate closely with cross-functional teams to build, enhance, and support the platforms that power KingMakers’ expanding product portfolio. This is more than just a technical role: it’s an opportunity to make a lasting impact. At KingMakers, we’re bold in our ideas, fearless in tackling the hardest problems, and relentless in our pursuit of innovation. If you’re ready to bring fresh perspectives, push boundaries, and shape the future of sports and gaming entertainment, we’d love to hear from you. What you will be doing Develop and maintain UI components using React and TypeScript, ensuring high-quality and scalable solutions. Integrate seamlessly with backend services through RESTful APIs, delivering a smooth user experience. Build high-performance and responsive web applications that work flawlessly across devices. Ensure maintainability and performance with best practices in CSS, responsive design, and accessibility. Write and maintain unit tests with Jest or similar frameworks, ensuring code reliability. Architect scalable frontend solutions, leveraging patterns such as SSG, SSR, Islands, and Streaming SSR. What you need for this role: Strong expertise in CSS and UI design principles to create intuitive interfaces. Proven experience building modern web applications with React, TypeScript, and JavaScript. Experience working with RESTful APIs for seamless backend integration. Familiarity with unit testing using Jest or similar tools to maintain code quality. Deep understanding of frontend architectural patterns for scalable applications. Experience working with CMS platforms like Strapi or Umbraco. Knowledge of Cloudflare, Vercel, or similar platforms for web hosting. Familiarity with package managers such as PNPM or Yarn. Exposure to Application Performance Monitoring (APM) tools like Kibana and Elastic. How you do it – Expectations for fulfilling your role: At KingMakers, culture isn’t just a set of words on a wall, it’s how we show up, how we work, and how we grow. That’s why we created Our CROWNS: six bold, clear and actionable values that guide how we make decisions, collaborate, and raise the bar for ourselves and each other. 👑 Customer First We build with and for our customers. Whether internal or external, we care deeply about what drives them and always strive to deliver real, meaningful value. 📈 Raise the Bar We take initiative, take ownership, and never settle. We’re not here to show off, we’re here to make an impact, raise standards, and push for better every time. 💬 Operate with Candor We build trust through openness and honesty. We speak clearly, listen actively, and make space for others to be part of the conversation. Truth with kindness, always. 🤝 We Build Together We collaborate across teams, support one another, and leave egos aside. We succeed as a team, lifting each other up and sharing the load. ⚡ No Hesitation, Never Reckless We move boldly and responsibly. We take smart risks, speak up, and try new things, with the courage to own the outcome and the clarity to avoid chaos. 🚀 Speed & Iteration We act fast, learn fast, and improve fast. We cut through the noise, take action, and adapt quickly. Progress beats perfection. At KingMakers, your work will have a real impact. Here’s what makes us different: Shape the Future: Build systems that transform the way millions engage with sports and entertainment, making every interaction meaningful. Work Globally: Collaborate with exceptional talent from across the world in an inclusive and dynamic environment. Embrace Challenges: Take on exciting projects that push boundaries and allow you to grow as a leader in your field. Innovate and Thrive: Be part of a culture that celebrates bold ideas, values diversity, and prioritizes personal and professional growth. What We Offer At KingMakers, we believe great talent deserves great rewards. That’s why we offer competitive compensation packages designed to reflect your expertise and impact. Our benefits are tailored to each location, ensuring they align with what matters most to our people. Whether it’s health coverage, hybrid work and perks, we strive to provide what you need to thrive – wherever you are.

Responsibilities

Develop and maintain UI components using React and TypeScript while ensuring high-quality and scalable solutions. Collaborate with cross-functional teams to build, enhance, and support the platforms that power KingMakers’ expanding product portfolio.