Senior Front-End Software Engineer (Apps team)

About Us

At KingMakers, we’re not here to follow the industry, we’re here to define it.

We are a proudly homegrown African company, building the future of sports and iGaming entertainment across the continent. Since our launch in 2018, we’ve created platforms that connect millions of fans to the excitement they love through our leading brands, BetKing and SuperSportBet.

From Nigeria to South Africa, we’ve rapidly grown into a powerhouse, recognized for raising standards, pushing boundaries, and shaping what’s next in our industry. Our vision is bold: to be the home where Africa plays.

Collaboration, innovation, and fearless execution define our culture. Every decision is purposeful, every interaction impactful, and every product designed to serve our players and partners with excellence.

We move fast, stay curious, and constantly raise the bar. Our mission is to deliver entertainment with integrity, innovation, and impact - because great products can change how entire communities experience play.

Role Overview:

As a Senior Front-End Software Engineer, you will join the Apps team responsible for building the organization's mobile products end to end, powering our gaming experience across iOS and Android.

You’ll be part of a group focused on delivering products that are highly resilient, extremely low latency, and scalable to massive volumes, while always providing a first-class customer experience. Working hand in hand with Product Managers, Designers, and Engineers, you’ll help tackle the challenges that truly move the needle: speed, stability, platform foundations, and user experience at scale.

With a strong understanding of modern architectural and engineering practices behind successful distributed, transactional systems, you’ll contribute to designing, building, delivering, and running our gaming platforms and products in production.

You’ll share your team’s passion for automation, quality, and thoroughly tested solutions, leaving no stone unturned in raising the bar and driving KingMakers’ success.

As part of our rapidly growing Tech organization, this role offers the opportunity to play a key part in taking KingMakers’ mobile products to the next level, with real ownership, real scale, and real impact.

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.

Requirements

What you need for this role:

• Technical Skills:
• 5+ years of professional experience in frontend development.
• Experience with and strong interest in AI tools.
• Strong expertise in React, TypeScript, JavaScript, HTML5, CSS, and Tailwind.
• Experience integrating with REST APIs; GraphQL experience is a plus.
• Familiarity with unit testing frameworks such as Jest or Vitest.
• Deep understanding of frontend architectural patterns for building scalable applications.
• Experience working with CMS platforms such as Strapi.
• Knowledge of web hosting platforms like Cloudflare and Vercel.
• Familiarity with package managers such as PNPM or Yarn.
• Exposure to Application Performance Monitoring (APM) tools such as Kibana or Elastic.
• Bonus / Nice-to-Have:
• Experience with high-volume transactional systems, fintech, or iGaming.
• Experience in performance optimization, accessibility, and responsive design.
• Familiarity with CI/CD pipelines and Docker.

How You Do It – Our CROWNS

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.

• 👑 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 here to make an impact 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.
• 🚀 Speed & Iteration: We act fast, learn fast, and improve fast. Progress beats perfection.

Benefits

What we offer:

• Hybrid work model (2 days onsite in our Madrid office, 3 remote).
• 24 days of annual leave + public holidays.
• Birthday day off.
• Private health insurance with Alan (including dental & mental health).
• Flexible compensation plan with Alan for meals and transport.
• Discretionary annual bonus based on company and individual performance.*
• Additional paid leave for life events.
• Regular team breakfasts, offsites, and local events.
• Work with global teams across Nigeria, South Africa, Malta & the UK.
• Eligibility for the discretionary bonus depends on the onboarding cycle and start date; employees joining after a certain point in the year may not be eligible for the 2026 cycle.