Software Developer (Core Telco)

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    Software Developer (Core Telco)

    2026.10.22.

    Summary

    Budapest, HUN

    Hybrid

    Medior

    Introduction

    The company is one of Hungary’s leading IT and telecommunications players, providing complex digital solutions to business and government clients. Its activities include IT system integration, software development, cloud services, and the operation and development of telecommunications infrastructure. Its dynamic growth is supported by strategic acquisitions and an innovation-driven approach in both the domestic and international markets.

    Tasks

    • Analyze existing services and legacy code, including dependencies spread across multiple repositories.
    • Design, implement and maintain clean, testable and reliable Java- and PHP-based services, microservices and APIs, with Java representing the primary technology stack.
    • Develop and modernize system integrations and asynchronous data flows using REST/OpenAPI, Kafka, messaging and related technologies.
    • Write unit and integration tests, participate in code reviews, and maintain concise technical documentation.
    • Troubleshoot defects using logs, traces and production-like environments; identify root causes and implement durable fixes.
    • Collaborate with lead developers, architects, DevOps, integration experts and vendor teams throughout delivery.

    Expectations

    • 3+ years in professional software development, preferably in complex enterprise or high-availability systems.
    • Strong Java experience and practical knowledge of Spring Boot or Quarkus, microservices and RESTful APIs.
    • Experience with Git, automated testing, CI/CD pipelines and containerized application delivery.
    • Understanding of distributed systems, messaging or streaming technologies such as Kafka or RabbitMQ.
    • Analytical, collaborative and ownership-oriented mindset

    Advantages

    • Telco experience
    • BSS/OSS experience
    • Core Network experience

    Personality:

    • A curious, dependable engineer who is comfortable entering a large and imperfectly documented codebase.
    • Asks the right questions and turns complex requirements into working, tested software.
    • Takes ownership of assigned components and actively supports the wider team. 

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      Software Developer (Core Telco) java,telco HUN Budapest hybrid medior The company is one of Hungary’s leading IT and telecommunications players, providing complex digital solutions to business and government clients. Its activities include IT system integration, software development, cloud services, and the operation and development of telecommunications infrastructure. Its dynamic growth is supported by strategic acquisitions and an innovation-driven approach in both the domestic and international markets. Analyze existing services and legacy code, including dependencies spread across multiple repositories.Design, implement and maintain clean, testable and reliable Java- and PHP-based services, microservices and APIs, with Java representing the primary technology stack.Develop and modernize system integrations and asynchronous data flows using REST/OpenAPI, Kafka, messaging and related technologies.Write unit and integration tests, participate in code reviews, and maintain concise technical documentation.Troubleshoot defects using logs, traces and production-like environments; identify root causes and implement durable fixes.Collaborate with lead developers, architects, DevOps, integration experts and vendor teams throughout delivery. Analyze existing services and legacy code, including dependencies spread across multiple repositories.Design, implement and maintain clean, testable and reliable Java- and PHP-based services, microservices and APIs, with Java representing the primary technology stack.Develop and modernize system integrations and asynchronous data flows using REST/OpenAPI, Kafka, messaging and related technologies.Write unit and integration tests, participate in code reviews, and maintain concise technical documentation.Troubleshoot defects using logs, traces and production-like environments; identify root causes and implement durable fixes.Collaborate with lead developers, architects, DevOps, integration experts and vendor teams throughout delivery. 3+ years in professional software development, preferably in complex enterprise or high-availability systems.Strong Java experience and practical knowledge of Spring Boot or Quarkus, microservices and RESTful APIs.Experience with Git, automated testing, CI/CD pipelines and containerized application delivery.Understanding of distributed systems, messaging or streaming technologies such as Kafka or RabbitMQ.Analytical, collaborative and ownership-oriented mindset Telco experienceBSS/OSS experienceCore Network experiencePersonality:A curious, dependable engineer who is comfortable entering a large and imperfectly documented codebase.Asks the right questions and turns complex requirements into working, tested software.Takes ownership of assigned components and actively supports the wider team.