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Backend Developer

Codonix d.o.o.

Beograd

04.08.2026.

  • 2 izvršioca
  • ugovor
  • puno radno vreme
  • Obaveštenje o pregledu prijave

This is a full-time and on-site position!

About Us

We are a team dedicated to building innovative digital products with a strong focus on user experience. Our goal is to create high-performance systems that deliver seamless and engaging experiences to our users.

As our team continues to grow, we are looking for a Backend Developer who will help build scalable backend systems and contribute to the evolution of our backend architecture.

What Makes This Role Interesting

  • Build high-performance, production-scale backend systems powering critical applications
  • Work alongside senior developers and technical leads to shape backend architecture
  • Monitor and improve system reliability and logging with Graylog
  • Opportunity to influence system design and operational excellence

Responsibilities

  • Build and maintain enterprise-level applications using Symfony Framework and PHP
  • Design high-performance and optimized queries in PostgreSQL
  • Manage job and queue systems using Supervisor, Redis and RabbitMQ
  • Ensure integration, deployment and optimization of applications running on AWS
  • Build and maintain 3rd party integrations (REST APIs, payment providers and other software solutions)
  • Implement and maintain payment processing workflows
  • Participate actively in code reviews and technical discussions
  • Apply best practices in development, testing and documentation
  • Monitor and troubleshoot applications using Graylog or similar logging systems
  • Optimize applications for performance, scalability and maintainability

Requirements

  • 3+ years of experience in PHP, preferably with Symfony Framework and Doctrine ORM (must-have)
  • Strong expertise in PostgreSQL, including indexes, query optimization, and migration management
  • Hands-on experience with Redis and RabbitMQ for messaging/queue systems
  • Practical experience with Supervisor or similar process management tools
  • Experience working with AWS services (EC2, S3, RDS, Lambda, etc.)
  • Experience in developing 3rd party integrations, including payment providers
  • Experience with Graylog or similar centralized logging systems
  • Strong problem-solving, analytical and research skills
  • A responsible, collaborative team player with excellent communication skills

Nice to Have

  • Knowledge of Docker and Kubernetes
  • Familiarity with Jira
  • Experience with microservice-based architectures
  • Knowledge of Go Lang

    Codonix d.o.o.

    Srbija, Beograd, Hercegovacka 17 10/1002

    PIB: 115540523

    Matični broj: 22172697

    Napomena: Poslovi.infostud.com ne vrši posredovanje u zapošljavanju u Srbiji, niti u inostranstvu. Postupak selekcije i odabira kandidata je u nadležnosti poslodavca, a odredbe ugovora o radu predstavljaju direktan dogovor između poslodavca i zaposlenog. Svi pojmovi u oglasima, koji su upotrebljeni u muškom rodu, odnose se bez diskriminacije i na osobe ženskog pola i obrnuto, osim ukoliko specifičnim zahtevima posla nije drugačije propisano.