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Citrus SystemsCS

Middle/Middle+ Backend Developer

Join us to build iGaming platforms together. We are Citrus Systems and we strongly believe that everyone deserves to be able to work in a low-stress environment, take a walk during working hours, or stay at home when they feel like it.

Citrus Systems

Employee count: 51-200

Serbia only

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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 all over the world 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 Middle/Middle+ Backend Developer to join our team for full-time remote employment!

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 (every second-week Power-Up Friday with 4 hours of working time, 25 working days of paid vacation, flexible schedule);
  • 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.

We are looking for a Backend Developer (Middle / Middle+) to join our Remote-first cross-functional team and work on several core products: our Traffic Distribution System (TDS), SEO platform, and an internal CRM platform.

Youll work in a multi‑language backend environment (Node.js, PHP, Golang), help modernize existing services, and contribute to a more scalable, maintainable architecture in a remote‑first setup.

Tech stack and requirements:

  • Were specifically looking for someone comfortable working with Node.js, PHP, and Golang in production.

    

    You should have solid, hands‑on experience with:

  • Node.js – understanding and maintaining existing services (e.g. current TDS)
  • PHP 8.x – for SEO platform and the internal CRM platform
  • Golang – for TDS migration and new services
  • Symfony 6.x – main framework for PHP services
  • Relational databases (SQL) – e.g. MySQL
  • Redis – caching, queues, and general NoSQL workflows
    
    Experience with the following will help you be productive from day one:
  • Docker Docker Compose

  • Linux (Ubuntu) for daily development and debugging

  • Bash scripting for automation and maintenance tasks

  • Git – branches, pull requests, code reviews

  • Basic AWS usage – e.g. EC2, RDS, S3, ECS/EKS or similar



Nice to have:

  • Background with high‑load / high‑traffic systems

  • Familiarity with Clean / Hexagonal / DDD‑inspired architecture

  • Experience with monitoring observability tools (e.g. Grafana, Kibana, Sentry, Prometheus)

  • Knowledge of CI/CD pipelines and deployment automation

  • Basic understanding of technical SEO (sitemaps, redirects, canonical tags, etc.)



What we expect from you:

  • 3–5 years of professional backend development experience.

  • Practical experience with at least two of the three: Node.js / PHP / Golang (ideally all three).

  • Ability to own features and services end‑to‑end – from design to production support.

  • Comfortable working independently in a remote environment, but collaborating actively with the team.

  • Strong focus on code quality, testing, and maintainability.

  • Willingness to debug complex issues, propose improvements, and participate in architectural discussions.

  • Clear and respectful communication in English with engineers and non‑technical stakeholders.

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 CMS department is waiting for you to become an indispensable part of it!

About the job

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Posted on

Job type

Full Time

Experience level

Mid-level

Location requirements

Hiring timezones

Serbia +/- 0 hours

About Citrus Systems

Learn more about Citrus Systems and their company culture.

View company profile

Join us to build iGaming platforms together. We are Citrus Systems and we strongly believe that everyone deserves to be able to work in a low-stress environment, take a walk during working hours, or stay at home when they feel like it. We have been based in Belgrade for more than 5 years, and we are especially proud of our multinational team and international projects.

This is how we roll. We live by this motto, and we believe that working efficiently is the guarantee of success. Every one of our employees is equally dedicated to this aim, so we can maintain a low-stress environment. Focusing on every task gives us more free time and the liberty to choose how to spend it. Building trust among our people means more freedom, responsibilities, and rewards. We save time with maximal optimization of procedures and approvals. Work-life balance is our main belief, and we offer our people the support they need to maintain it. We cherish tolerance and live without prejudice. Everyone is welcome in our diverse team, and we nurture open communication and transparency so everyone can share ideas and concerns.

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Citrus Systems

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Citrus Systems hiring Middle/Middle+ Backend Developer • Remote (Work from Home) | Himalayas