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 features that make a real-world impact at massive scale, from user interfaces to the services that power them? At RapidSOS, we create technology that helps organizations operate smarter with real-time data — and, in critical moments, powers emergency response by ensuring life-saving information reaches those who need it most.

We’re seeking a Senior Software Engineer to build intuitive, visually engaging, and robust user interfaces that bridge the gap between complex technical solutions and real-world challenges. While this role is frontend-focused, you’ll own features end-to-end — delivering seamless functionality from the UI to the supporting services. You’ll collaborate closely with product, design, and engineering teams to evolve a platform used by leading organizations, defining how real-time information is visualized, understood, and acted upon in emergency situations. You'll also play a pivotal role in driving architectural decisions, ensuring our interfaces are scalable, high-performing, and accessible.

What you’ll do:

• Drive the architecture, design, and implementation of new features, leveraging Typescript and Python
• Lead strategic architectural decisions, help drive alignment, and optimize applications for performance, scalability, and accessibility
• Engineer dynamic, responsive user interfaces that combine intuitive, user-centric interactions with polished design for enterprise customers
• Translate design ideas into high-quality, user-focused interfaces that are technically feasible
• 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 frontend or full-stack engineering experience with 3+ years of developing rich, interactive, scalable frontend applications with React and TypeScript
• Proficiency with ideally Python – proficiency with Go, node.js, C++/C or a similar language will be considered with willingness to learn Python
• Experience with modern CSS frameworks and libraries such as Styled Components
• Experience building, maintaining, and integrating RESTful APIs and delivering comprehensive end-to-end solutions in a cloud-based environment
• 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
• Cares deeply about the user experience and is able to quickly identify the optimal visual strategies to meet both product and design goals
• Strong proficiency in coding best practices – ability to write clean, maintainable, and testable code
• Demonstrated expertise in problem solving – troubleshooting issues and debugging a large codebase
• Ability and willingness to collaborate in-person quarterly, or as needed

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

• Experience integrating with WebSocket APIs for real-time data streaming
• Experience working with a Map UI provider such as Google Maps or ESRI
• Experience with a JavaScript testing tool (We use Jest, Playwright, and React testing library at RapidSOS but any testing library experience would be helpful!)
• Understanding of JavaScript security best practices
• Familiarity with design handoff tools like Figma

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 $155,000 - $185,000. This role will also be eligible to receive equity options.