Backend Node.js Engineer (iGA)
sigmaworld · Belgrade, Serbia
About The Role
Employment Type: Full-time
About SiGMA Group
Founded in 2014 and headquartered in Malta, SiGMA Group now employs over 250 professionals across six global offices, including Malta, Cyprus, Serbia, Brazil , and the Philippines . SiGMA is a global leader in gaming, emerging tech, affiliate marketing, events, and media. It is best known for its marquee summits, such as SiGMA World in Rome , and initiatives like the iGaming Academy. The company’s culture champions inclusivity, sustainability, collaboration, and philanthropic impact under its SiGMA Foundation initiative
Role Overview
At Si GMA Group, we are building a brand-new eLearning platform and looking for a skilled and reliable Back-End Engineer to join us at this early and exciting stage. This role involves developing scalable, secure, and high-performing applications, APIs, and data services that support business and user needs. The ideal candidate combines strong software engineering fundamentals with a practical understanding of system design, integration, and performance optimization. The platform is built using cloud services, with a strong focus on serverless architecture and managed infrastructure.
Key Responsibilities
- Develop and maintain serverless back-end components using Node.js and TypeScript
- Work with AWS-managed services (e.g., API Gateway, DynamoDB, RDS, S3) to build scalable and reliable systems
- Design and optimize databases, data models, and queries for performance and reliability
- Integrate internal and external systems through APIs, messaging services, and other data exchange mechanisms
- Write maintainable, well-tested code and participate in code reviews to uphold engineering standards
- Troubleshoot, debug, and resolve production and development issues across back-end services
- Monitor application performance, reliability, and security, and implement improvements where needed
- Contribute to architecture discussions, technical design, and continuous improvement of engineering standards
Key Skills and Competencies
- Strong proficiency in Node.js and TypeScript, preferably in a serverless or cloud-native environment
- Experience with AWS cloud services, particularly AWS Lambda and serverless architectures
- Experience designing and building RESTful APIs services
- Strong understanding of relational databases
- Knowledge of system design, scalability, performance tuning, and secure coding practices
- Understanding of authentication, authorization, and API security best practices
- Familiarity with testing practices, including unit, integration, and automated testing
- Strong analytical and problem-solving skills
- Good communication and collaboration skills
- Ability to work effectively in agile, cross-functional teams
Preferred Experience
- BSc in Computer Science, Software Engineering, or a related field, or equivalent practical experience
- 3+ years of p roven experience as a Back-End Engineer , Software Engineer, or similar role
- Experience building and maintaining production-grade back-end systems
- Exposure to distributed systems, high-availability services, and cloud-native architectures is a plus
Why SiGMA Group?
- Grow with us – Be part of SiGMA’s global expansion and make your mark.
- Free iGaming Academy access – Learn the ins and outs of the industry with access to courses.
- Travel perks – Visit our international offices and attend industry events worldwide.
- Performance rewards – High performers are recognized and fast-tracked with annual reviews and bi-yearly performance checks ins.
- Interest-free car loan after probation (T&Cs apply)
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