Citrus Systems

Backend Developer

Citrus Systems  •  Belgrade, RS (Onsite)  •  4 days ago
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Job Description

Hello there, thanks for paying attention to our vacancy and let us introduce ourselves.

We are an IT company occupying a remarkable place in marketing, gaming, and financial segments of the iGaming industry. Our products are successfully implemented in European, African, and Latin American markets.

Ever since we first started, we have been driven to find the best solutions in everything we do. At the same time, we have been creating strong connections worldwide, which have helped us establish our presence in the industry.

We strive for fun, elegance, and efficiency in everything we do. You can feel this in our relaxed, homelike working environment. We offer employment and seek to hire only the brightest, most driven, and most gifted minds around.

Currently, we are looking for an ambitious Backend Developer to join our team for full-time employment in our beautiful office in New Belgrade.

Here are a few reasons to join us

  • competitive salary and constant encouragement for your efforts and contribution (annual salary review,);
  • rapid growth (junior to CEO is a familiar journey for our company. We value business results and individuals eager to raise the bar. As an employer we provide supportive space to pursue your ideas);
  • we are taking care of the overall well-being of our people by providing private health insurance and Fit Pass for all;
  • work-life balance (25 working days of paid vacation, flexible schedule, corporate events, and team-building activities);
  • modern and comfy office (easy-to-get office in new business center with a spectacular view, free fruits, and snacks in the office, playroom with billiard, tennis table, and PlayStation);
  • we like to celebrate special days and have fun at our corporate events, and team-building activities, and we have special vouchers for our people's birthdays so you can enjoy your special day.

As a Backend Developer at our company, we expect you to be responsible for:

1. Backend Development & Platform Integrations

  • Develop, maintain, and enhance backend services supporting gaming platform integrations and internal system connectivity.
  • Design and implement scalable APIs and integration solutions to support third-party gaming providers and operational platforms.
  • Write clean, efficient, and well-tested code using Clojure and related backend technologies.
  • Optimize backend services, database interactions, and asynchronous and synchronous processing workflows to improve system performance and reliability.

2. System Performance & Reliability

  • Monitor, troubleshoot, and resolve production issues to ensure stable performance of integration servers.
  • Contribute to backend scalability, maintainability, and system reliability improvements.
  • Ensure high availability and operational efficiency across multiple integration environments.

3. Architecture & Technical Collaboration

  • Participate in system architecture and technical design discussions.

  • Collaborate with cross-functional teams to deliver reliable and high-performing backend solutions.
  • Follow security, scalability, and engineering best practices across backend services.
  • Participate in code reviews, technical documentation, and continuous improvement initiatives within the engineering team.

Required skills:

  • 2+ years of experience working with Java, Clojure or Node.js backend technologies.
  • Experience in backend software development, including APIs, integrations,
    or distributed systems.
  • Strong understanding of backend architecture, RESTful APIs,, asynchronous processing, and microservices environments.
  • Good spoken and written English (B1+)
  • Strong problem-solving, debugging, and communication skills.

Will be an advantage:

  • Experience within gaming, betting, fintech, or other high-availability platform environments.
  • Experience with Kinesis or SQS.
  • Familiarity with cloud infrastructure, Docker and CI/CD pipelines.
  • Experience integrating third-party providers, external APIs, or partner platforms in scalable backend environments.

From our part, we are ready to provide you with our full and comprehensive support in order to successfully cope with this list of tasks. Our Gaming Platform Technical Department is waiting for you to become a part of it!

Citrus Systems

About Citrus Systems

We are an IT company occupying a remarkable place in marketing, gaming and financial segments of the iGaming industry. Our products are successfully implemented in European, African and Latin American markets.

Ever since we first started, we have been driven to find the best solutions in everything we do. At the same time, we have been creating strong connections all over the world which has helped us to establish our presence in the industry.

We strive for fun, elegance, and efficiency in everything we do. You can feel this in our relaxed, homelike working environment perfectly. We offer employment and seek to hire only the brightest, most driven, and most gifted minds around.

Industry
IT & Software
Company Size
51-200 employees
Headquarters
Belgrade, RS
Year Founded
Unknown
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