Senior Software Engineer, CLV Monitoring

About SimpliSafe We’re a high-tech home security company that’s passionate about protecting the life you’ve built and our mission of keeping Every Home Secure. And we’ve created a culture here that cares just as deeply about the career you’re building. Ours is a no ego culture of collaboration and innovation where those seeking their next challenge can find big opportunities and make a huge impact on the lives of all those who we protect. We don’t just want you to work here. We want you to grow and thrive here. We’re embracing a hybrid work model that enables our teams to split their time between office and home. Hybrid for us means we expect our teams to come together in our state-of-the-art office on two core days, typically Tuesday, Wednesday, or Thursday – working together in person and choosing where they work for the remainder of the week. We all benefit from flexibility and get to use the best of both worlds to get our work done. Why are we hiring? Well, we’re growing and thriving. So, we need smart, talented, and humble people who share our values to join us as we disrupt the home security space and relentlessly pursue our mission of keeping Every Home Secure. About the Role SimpliSafe's CLV Monitoring Engineering organization is looking for motivated, self-reliant engineers with a backend focus to join our team. We're building next-generation monitoring experiences that rise head and shoulders above our industry, leveraging our best-in-class technology and our focus on people. We embrace modern software design and craftsmanship, and support and own our work through its entire lifecycle. In this role, you'll take ownership of the backend systems that connect our customers to our Monitoring Center specialists; everything from day-to-day bug squashing to the technical design and architecture of major features and products. Responsibilities Lead technical design for complex backend features, writing design docs, evaluating tradeoffs, and driving decisions on architecture, data models, and API contracts. Design and implement backend services in Node.js/TypeScript with a focus on reliability, scalability, and performance. Develop and maintain testing strategies to ensure services stay performant and maintainable as they scale. Own services end-to-end, from design through production, including observability and resolving performance bottlenecks and technical debt. Collaborate with product, design, and other engineering teams to turn ambiguous problems into well-scoped technical solutions. Act as a technical lead on projects, setting direction, unblocking teammates, and reviewing designs and code. Mentor engineers on technical design and backend best practices. Requirements Experience owning complete features solo within a larger product, or taking full ownership of small products/projects. Track record working with product teams to resolve ambiguity and with other engineering teams to design the right technical solution. Demonstrated experience owning technical design for medium-to-large systems (design docs, RFCs, architecture proposals). Strong grasp of distributed systems, API design, and data modeling. Experience building and maintaining scalable, high-availability production services. Proficiency in a modern language (TypeScript, C#, etc.) with willingness to learn new tools and languages. Proficiency in a modern, cloud-scale NoSQL database. Proficiency in implementing modern observability frameworks and logging, and using them to diagnose real issues in production systems. Fluency with modern AI tools (e.g., Claude Code, Cursor) across research, design, and implementation, paired with the senior-level judgment to know when they're wrong and to direct, review, and own everything they produce. Collaborative mindset, strong customer focus, and passion for learning. Nice-to-Haves Extensive experience with CI/CD and test automation. Strong understanding of cloud technologies and practices like infrastructure-as-code and De…