Senior Software Engineer, Full-Stack

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 elevating purpose, inventing tomorrow, delivering with urgency, serving with integrity, and winning together, all of which support a company culture where people can innovate, collaborate, grow, and, above all, make an impact. 

RapidSOS is ​​the leading public safety AI company that unlocks mission-critical intelligence for first responders and security teams – enabling faster, smarter and more accurate emergency response. Real-time data from the world’s largest safety network of 700M+ devices, 200+ global enterprises, and 23,000+ federal, state and local agencies fuels the RapidSOS HARMONY AI engine that delivers this intelligence to those who need it most. Learn more at www.RapidSOS.com.

What this role is about: 
Are you excited to build systems that make a real-world impact at massive scale, powering the real-time data and infrastructure behind mission-critical workflows? At RapidSOS, we create technology that powers smarter operations through real-time data — and, in critical moments, ensures life-saving information is delivered quickly, reliably, and when it matters most.

We’re seeking a Senior Software Engineer to build the scalable, reliable backend systems that power the core engine of our B2B platform. While this role is backend-leaning, you’ll own features end-to-end — shaping how they’re built across services, data flows, AI-driven capabilities, and the user experience to deliver seamless, dependable functionality. You’ll collaborate closely with product and engineering teams to evolve a platform used by leading organizations, ensuring our systems are resilient, high-performing, and scalable in the moments that matter most.

What you’ll do: 

• Drive the architecture, design, and implementation of new features, leveraging Python and TypeScript
• Lead strategic architectural decisions, help drive alignment, and optimize applications for performance, scalability, and accessibility
• 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
• Identify opportunities to assess and enhance current applications, including refactoring code and upgrading technologies used
• Collaborate in an agile environment with stakeholders across Engineering, Design, GTM, and Product to develop solutions for RapidSOS products
• Leverage modern AI development tools (Claude Code, Cursor or similar) to accelerate delivery and improve code quality
• 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: 

• 5+ years of professional backend or full-stack engineering experience with deep expertise in Python and proficiency with React & TypeScript
• Experience integrating with RESTful APIs and delivering comprehensive end-to-end solutions in an AWS environment
• Experience working with relational and non-relational databases and message bus systems (RabbitMQ, Kafka, AWS SQS / SNS)
• 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
• Strong proficiency in coding best practices – ability to write clean, maintainable, and testable code 
• Customer-centric mindset; cares deeply about delivering solutions that enable and delight customers while meeting product goals
• Demonstrated expertise in problem solving – from troubleshooting issues to debugging a large codebase
• Ability and willingness to collaborate in-person a few times per quarter, or as needed

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

• Experience with telephony / VoIP / SIP 
• Experience with websockets