Senior Software Engineer, Full-Stack

Role Description

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.

Qualifications

• 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.

Requirements

• Nice-to-have experience (but not required!):
• Experience with telephony / VoIP / SIP.
• Experience with websockets.

Benefits

• 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.
• 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.