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Senior Software Engineer, VoIP

RapidSOS

$165,000 - $185,000
Aug 14, 2025
Remote, US
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RapidSOS is looking to build resilient, cutting-edge systems that drive real-world impact in emergency response with innovative technology

Requirements

  • 7+ years of software engineering experience with 4+ years of relevant experience with VoIP/SIP
  • Experience developing VoIP, SIP, and Real Time Communication services
  • Experience developing Linux-based solutions in Python, Go, or C/C++, with proficiency ideally in Python or a willingness to learn it
  • Understanding of network protocols, capture, and environments with technology like Wireshark, SIPp, libpcap, and BSD socket programming
  • Experience scaling solutions with automated testing tools, frameworks and systems
  • Ideally has experience building AI-driven features or using AI tools to enhance acceleration of development, and is proactive about leveraging emerging technologies
  • Experience with AWS

Responsibilities

  • Drive the architecture, development, and deployment of new features for SIP and voice-centric applications, including transcription solutions within a client/server environment
  • Lead strategic architectural decisions, help drive alignment, and optimize applications for performance, scalability, and accessibility including testing capabilities
  • Prototype and test new VoIP features to evaluate feasibility, drive innovation, and identify opportunities for system-wide performance improvements
  • Ensure the reliability and performance of our voice infrastructure by monitoring device health and optimizing connectivity across large-scale, distributed deployments
  • Collaborate with the Product team, Engineers, and other stakeholders to design solutions for the most critical challenges facing our public safety and B2B data partners in an agile environment
  • Use best-in-class software development practices (unit tests, integration tests, performance tests, monitoring, detailed functional specification and test plans) to ensure RapidSOS' products remain highly reliable and fault tolerant
  • Actively participate in code reviews and standups, sharing knowledge, championing best practices, and contributing to the continuous improvement of team processes

Other

  • Highly self-motivated; ability to adapt and learn quickly in a fast-paced environment with a strong sense of ownership
  • Strong communication and interpersonal skills; is a team player with a positive attitude
  • Ability and willingness to collaborate in-person a few times per quarter, or as needed
  • You are self-directed and enjoy solving difficult problems in a collaborative environment
  • You are passionate about building and releasing software that serves a vital purpose