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Senior Developer – Research & Development (Full Stack)

The Multiple
Full-time
Remote friendly (Ta Xbiex, Malta)
Malta

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



As a Senior Developer in our R&D team, you will play a key role in the design, development, and implementation of full-stack solutions. You will work on a variety of projects using Node.js and Next.js to deliver robust, scalable, and innovative software. The ideal candidate will be an all-rounder with a passion for full-stack development, an eye for detail, and a solid understanding of databases, microservices, queuing systems, service mesh, and modern cloud architectures. Strong knowledge of design patterns such as Domain-Driven Design (DDD), Saga Pattern, CQRS, and dependency injection principles like SOLID is essential.




Key Responsibilities:




  • Design and develop high-quality full-stack applications using js, Python and Next.js/React.

  • Design and optimize relational databases such as MySQL and NoSQL databases like MongoDB.

  • Write efficient and correct SQL queries and analyse flawed queries to improve performance.

  • Create and manage indexes to optimize database performance and ensure query efficiency.

  • Architect and implement Microservices-based solutions for scalable systems.

  • Implement and manage Service Mesh technologies for microservices communication and network reliability.

  • Apply design patterns like Domain-Driven Design (DDD), Saga Pattern, and CQRS to ensure high-quality, maintainable, and scalable software architecture.

  • Utilize dependency injection and SOLID principles to promote clean code and effective software design.

  • Optimize system performance using caching mechanisms (e.g., Redis, Memcached).

  • Experience working with queuing tools such as RabbitMQ or Kafka for distributed messaging and event streaming.

  • Contribute to DevOps practices and maintain a working knowledge of Cloud Solutions (Oracle Cloud/AWS/Azure).

  • Translate complex system designs into UML diagrams and ensure effective documentation practices.

  • Collaborate with product and design teams to ensure an eye for detail in both user experience and technical implementation.

  • Lead and participate in R&D projects, helping to prototype and evaluate new technologies.





Requirements:




  • Strong js development experience.

  • Proficiency in js and PHP is highly desirable.

  • Expertise in designing and optimizing relational databases like MySQL and NoSQL databases such as MongoDB.

  • Experience writing correct and efficient SQL queries and troubleshooting flawed queries.

  • Knowledge of indexing strategies to optimize database and SQL performance.

  • Expertise in developing and deploying Microservices

  • Experience with Service Mesh technologies (e.g: Consul/Istio/Linkerd) for microservices management and traffic control.

  • Strong understanding of design patterns such as Domain-Driven Design (DDD), Saga Pattern, CQRS, and event-driven architectures.

  • Proficient in applying dependency injection and adhering to SOLID principles for maintainable software design.

  • Experience with queuing tools such as RabbitMQ and Kafka for distributed messaging and event-driven architectures.

  • Experience with caching mechanisms (Redis, Memcached) to enhance performance.

  • Basic understanding of Cloud platforms (AWS, GCP, Azure).

  • Ability to work with DevOps practices, CI/CD pipelines, and containerization (e.g., Docker).

  • Proficient in UML design for software architecture and documentation.

  • Detail-oriented with excellent problem-solving skills.

  • Strong communication and collaboration skills within cross-functional teams.



Preferred Experience




  • 5+ years of experience in full-stack development, with strong expertise in js, Python and Next.js/React.

  • Prior experience with Service Mesh and large-scale system integration.

  • Knowledge of Agile development methodologies such as Scrum or Kanban previous experience with JIRA and Confluence is a plus.

  • Experience with R&D or innovation-focused projects is a plus.

  • Familiarity with Containerization (Docker/Kubernetes).



What we Offer:




  • Attractive remuneration package

  • Wellness benefit (after probation)

  • Optician/Spectacle and Blue Lens Benefit (after probation)

  • Health Insurance (after probation)

  • Breakfast/lunch all week

  • Monthly snacks allowance

  • Training support

  • Modern office facilities

  • Exciting Company Events

  • Beer Fridays

  • Refer a friend bonus



You should not apply if ...




  • You want a normal 9-5 job. This role is not easy & requires an all-in mentality. We`re 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.