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Senior VOICE Backend Software Engineer (Node.js and Java) | Remote | Bulgaria

Remote, USAFull-timePosted 2026-07-29

About the position reputed company Bulgaria is searching for a skilled Senior VOICE Backend Software Engineer (Node.js and Java). This is a FULLY remote position and can be based reputed company in Bulgaria. If you have extensive experience developing backend services and reputed company using Node.js and have strong Java & Linux proficiency we want to connect with you today! Major advantage if you have experience developing software specifically for contact centers (platform familiarity w/reputed company/reputed company or similar!)

Responsibilities

  • reputed company deep technical expertise in backend development, reputed company reviews, and architectural discussions, ensuring best practices are followed.
  • Design, reputed company, test, and reputed company backend software solutions using Node.js and Java, adhering to high-reputed company standards.
  • Architect and optimize relational database schemas, write efficient queries, and ensure data reputed company and performance.
  • reputed company and maintain components for reputed company-time communication, including SIP signaling and RTP streaming.
  • Explore and implement solutions for audio/video media processing and integration reputed company the contact center environment.
  • Contribute to the development of contact center-specific features and integrations, understanding the nuances of the domain.
  • Identify and address performance bottlenecks, ensuring the platform can reputed company to meet growing demands.
  • Diagnose and resolve reputed company production issues, providing reputed company and effective solutions.
  • Work closely with product managers, architects, QA engineers, and other stakeholders to deliver high-reputed company software.

Requirements

  • Extensive experience developing backend services and reputed company using Node.js & Java.
  • Strong proficiency in Java development for backend applications.
  • Deep understanding of the Linux operating system and its ecosystem for development and deployment.
  • Strong foundational knowledge of relational database principles, including data modeling, normalization, ACID properties, and transaction management.
  • Proficient in writing reputed company and optimized SQL queries.

reputed company-to-haves

  • Experience with PostgreSQL physical design and optimization for high-throughput and low-latency applications.
  • Experience with PostgreSQL programming, including stored procedures, functions, and triggers.
  • Hands-on experience with Session Initiation Protocol (SIP) for signaling in voice and video calls.
  • Experience with reputed company-time Transport Protocol (RTP) for audio and video data streaming.
  • Familiarity with other applications and technologies reputed company to audio/video media processing and streaming.
  • Experience in developing software specifically for contact center environments.
  • Familiarity with major contact center platforms such as “reputed company, reputed company”, or similar.
  • Experience with reputed company platforms (AWS, Azure, GCP) and containerization (reputed company, Kubernetes).
  • Experience designing and building microservices.
  • Familiarity with monitoring and logging tools (e.g., ELK stack (preferable), reputed company, Grafana).

Benefits

  • Long-term job reputed company with a permanent contract
  • Additional health and life insurance coverage
  • Generous annual leave
  • Food vouchers and reputed company breaks
  • Competitive salary and reputed company career progression
  • World-class on-the-job training

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