Senior Software Engineer, VoIP

💰 $165k-$185k
🇺🇸 United States - Remote
💻 Software Development🟣 Senior

Job description

In the time it takes you to read this job description, RapidSOS will have handled ~1,380 emergencies.

At RapidSOS, we are committed to using technology to build a safer, stronger future and working together to save lives. We’re in an exciting phase of growth, welcoming new members from across the globe to our mission-driven, ambitious, and inclusive team. Our work is founded on our values of trust and safety, pioneering, urgency, and purpose over pride, all of which support a company culture where people can innovate, collaborate, grow, and, above all, make an impact. If that sounds like an exciting opportunity, we want to hear from you!

RapidSOS is an intelligent safety company that harnesses artificial and human intelligence to fuse life-saving data from 600M+ connected devices, apps, and sensors from 200+ global technology companies to over 22,000 public safety agencies in six countries. Whether there’s an unsafe moment or an emergency, RapidSOS Ready devices, vehicles, homes, or buildings deliver essential data to the right place when it matters most. Learn more at www.RapidSOS.com.

What this role is about: Are you passionate about building resilient, cutting-edge systems that drive real-world impact? At RapidSOS, we’re transforming emergency response with innovative technology that delivers critical, life-saving data to telecommunicators serving 99% of the U.S. population.

We’re seeking a Senior VoIP Engineer to build and maintain our live transcription and call recording systems—critical services that enable reliable, real-time communication during emergencies. In this role, you will architect and develop integrated SIP-based systems with a focus on reliability, scalability, and security. You’ll also develop tooling, capture analysis, and observability solutions to enhance performance and ensure seamless, real-time call workflows at scale

In this role, you’ll have the opportunity to collaborate with a mission-driven team to tackle complex engineering challenges and reimagine how emergencies are managed around the world. If you’re excited to make a tangible impact where every second counts, we’d love to hear from you.

What you’ll do:

  • 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
  • Own meaningful parts of our platform, have an impact, grow with the company

What we’re looking for in our ideal candidate:

  • 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
  • Strong communication and interpersonal skills; is a team player with a positive attitude
  • Highly self-motivated; ability to adapt and learn quickly in a fast-paced environment with a strong sense of ownership
  • 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
  • Ability and willingness to collaborate in-person a few times per quarter, or as needed

Nice-to-have experience (but not required!):

  • Experience in Python
  • Experience with AWS
  • Experience creating systems to test call flow scenarios and scalability using tools like SIPp
  • Experience working with embedded systems or IoT devices
  • Experience with development of network analysis equipment or call recording equipment that is deployed inside an Emergency Communications Center
  • Experience with serial connected devices
  • Understanding of software design principles with experience in RESTful APIs or RESTful web services
  • Understanding of NG911 systems.

What we offer:

  • The chance to work with a passionate team on solving one of the largest challenges globally
  • Competitive salary and benefits and equity participation
  • A dynamic, flexible and fun start-up work environment with a highly talented team

If you’re curious to learn more about RapidSOS, you can check out https://rapidsos.com/blog/

Starting pay for a successful applicant will depend on a variety of job-related factors, which may include experience, relevant skills, training, education, location, business needs, or market demands. The salary range for this role is $165,000 - $185,000. This role will also be eligible to receive equity options. #LI-Remote

If you are based in California, we encourage you to read this important information for California residents linked here: https://rapidsos.com/privacy/california/

RapidSOS is proud to be an equal opportunity workplace. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, or Veteran status.

Interested in the role but you don’t meet 100% of the requirements? We’d love to hear from you! We encourage you to apply; we’d be excited to see if your unique skill set and experience could be a match.

Share this job:
Please let RapidSOS know you found this job on Remote First Jobs 🙏

Similar Remote Jobs

Benefits of using Remote First Jobs

Discover Hidden Jobs

Unique jobs you won't find on other job boards.

Advanced Filters

Filter by category, benefits, seniority, and more.

Priority Job Alerts

Get timely alerts for new job openings every day.

Manage Your Job Hunt

Save jobs you like and keep a simple list of your applications.

Search remote, work from home, 100% online jobs

We help you connect with top remote-first companies.

Search jobs

Hiring remote talent? Post a job

Frequently Asked Questions

What makes Remote First Jobs different from other job boards?

Unlike other job boards that only show jobs from companies that pay to post, we actively scan over 20,000 companies to find remote positions. This means you get access to thousands more jobs, including ones from companies that don't typically post on traditional job boards. Our platform is dedicated to fully remote positions, focusing on companies that have adopted remote work as their standard practice.

How often are new jobs added?

New jobs are constantly being added as our system checks company websites every day. We process thousands of jobs daily to ensure you have access to the most up-to-date remote job listings. Our algorithms scan over 20,000 different sources daily, adding jobs to the board the moment they appear.

Can I trust the job listings on Remote First Jobs?

Yes! We verify all job listings and companies to ensure they're legitimate. Our system automatically filters out spam, junk, and fake jobs to ensure you only see real remote opportunities.

Can I suggest companies to be added to your search?

Yes! We're always looking to expand our listings and appreciate suggestions from our community. If you know of companies offering remote positions that should be included in our search, please let us know. We actively work to increase our coverage of remote job opportunities.

How do I apply for jobs?

When you find a job you're interested in, simply click the 'Apply Now' button on the job listing. This will take you directly to the company's application page. We kindly ask you to mention that you found the position through Remote First Jobs when applying, as it helps us grow and improve our service 🙏

Apply