Job Description

Job Title: Backend Developer

Department: Tech
Location: Serbia/Armenia
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 PhilippinesSiGMA is a global leader in gaming, emerging tech, affiliate marketing, events, and media. It is best known for its marquee summits, such as SiGMAWorld in Rome, and initiatives like the iGaming Academy. The company’s culture champions inclusivity, sustainability, collaboration, and philanthropic impact under its SiGMA Foundation initiative

At SiGMA Group, we are building a brand-new eLearning platform and looking for askilled and reliable Back-End Engineerto 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 proven 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)