Senior Next.js Developer – iGaming / Online Casino

Who are we?

Welcome to Multiple (https://themultiple.com), your go-to iGaming service provider. We’re here to empower iGaming operators, allowing them to thrive in such a volatile industry. Our years of expertise, cutting-edge technology, and passion for delivering extraordinary player experiences make us the right choice for any company looking to elevate their success. We offer a range of iGaming offerings such as; Gaming Services, Casino Marketing, Sportsbook Marketing and Operations, Creative, Data and B.I, Operations (CS, RPF, KYC), VIP Management, Acquisition, Social Media, Content, Product, Legal and Compliance.

The Role:

Lead development of high-performance, real-time web applications using Next.js for the online casino and iGaming sector. Drive frontend architecture, performance, and compliance with industry regulations.

Key Responsibilities:

• Build and maintain high conversion, real time casino UIs using Next.js and React. Integrate casino games via iframes, APIs, and SDKs from game providers.
• Optimise SSR/CSR for performance under high traffic and global delivery (multi region support, CDN).
• Implement multi currency, multi language, and white label support.
• Ensure regulatory compliance (KYC/AML), responsible gaming features, and GDPR compatibility.
• Collaborate with backend teams on wallet systems, bonuses, and real-time transaction flows.
• Optimise frontend for engagement and monetisation (retention features, lobby UX, gamification).
• Track and act on player behaviour analytics and A/B test UI/UX improvements.
• Work closely with QA to ensure full test coverage for regulated environments.
  

 Requirements:

• Deep experience with Next.js and React in high frequency transaction environments.
• Experience integrating iGaming APIs, casino game providers, and back office tools.
• Strong understanding of regulated environments and frontend security best practices.
• Familiarity with bonus engines, affiliate systems, and user segmentation.
• Real-time UI work with sockets or push mechanisms for live gaming updates.
• Strong skills in responsive/mobile-first design and internationalisation (i18n).
  

What we offer:

• Attractive remuneration package
• Health insurance cover from the first day of work
• Wellness benefit (after probation)
• Optician/Spectacle and Blue Lens Benefit (after probation)
• Breakfast/lunch all week
• Monthly snacks allowance
• Training support
• Modern office facilities
• Dog-friendly workplace
• Exciting Company Events
• Monthly Beer Fridays
• Eur1,000 Refer a friend bonus
• Relocation package (if required)

You should not apply if ...

• You want a normal 9-5 job. This role is not easy & requires an all-in mentality. We are looking for team members who will put in the work that others won`t.
• You cannot take constructive feedback.
• You can`t handle stress and pressure.
• You have the mindset of "Quick Money", this is a marathon, not a sprint.
• You do not embody our core values.