Senior Software Engineer

10X Senior Software Engineer San Francisco, CA | Hybrid | Full‑Time | Senior Level | Posted May 28, 2026 We are looking for a Senior Backend Engineer with 10+ years of experience building scalable, production‑grade SaaS platforms — someone who architects distributed systems, owns reliability end‑to‑end, and writes code that other engineers learn from. What you’ll do Own Zingly’s scalability end‑to‑end, your work keeps us running smoothly as we grow. Build and evolve infra monitoring that’s smarter than yesterday’s. Change how billions of people experience customer service, before and after a sale. Architect and grow a robust, scalable all‑in‑one engagement platform. Write and maintain backend apps and services that thrive in production. Slash technical debt, evolve our architecture, and explore the latest tech. Collaborate across design, product, and engineering; you’ll know the system inside out. Lead by example: set the bar for quality, attitude, and execution. What we’re looking for You ship fast: pre‑scoped tasks in 7 days, pre‑defined goals in one sprint. Independent yet collaborative, you thrive in a distributed, fast‑moving team. Passionate about creating top‑notch user experiences, delivered on time. A problem‑solver who’s proactive, curious, and never stops learning. Startup‑minded: resourceful, adaptable, and not afraid to challenge the status quo. A natural leader who raises the bar for yourself and those around you. Driven and determined to do your best at everything you do. Passionate about creating the best user experience possible, on schedule. Independent but collaborative, clearly communicating and working across design, product, and engineering teams. Always curious and excited to learn new things, looking for feedback and opportunities to grow. Proactive, anticipating what’s around the corner, both in our own product, and the bigger industry. Innovative and not afraid to (respectfully) question status‑quo; out of the box thinker. Leader in character and skill set, setting the bar high for yourself and others. You're as comfortable in a client workshop uncovering requirements as you are designing a multi‑system integration architecture. You think in systems — and you can explain those systems clearly to a VP of Engineering and a business stakeholder in the same breath. Nice to have 8+ years building scalable, reliable enterprise SaaS apps. Hands‑on experience designing and scaling communication / CRM platforms. Deep skills across platform architecture, data, compliance, security, disaster recovery, and performance. Expert in Java, Spring framework (8+ years) and Python is a plus. Built long‑term, scalable architectures leveraging public cloud (AWS preferred). Strong knowledge of distributed microservices and multi‑tenant architecture. Experienced with Kafka, RabbitMQ, and other event‑driven middleware. Solid grounding in security (OIDC, OAuth, TLS, SSL, Comfortable with CI/CD pipelines (Jenkins, Docker, Kubernetes, GitOps, etc.). Experience with Test‑first development, profiling Java apps, data access APIs. Startup experience (we’ll move fast, pivot faster). Experience with voice and communication platforms. About Zingly.ai At Zingly, we’re creating the next generation of AI‑powered systems that transform how businesses build relationships with their customers. Our platform enables companies to deploy intelligent workflows and AI agents that integrate deeply with their existing tools, data, and processes. We believe the future of AI is not just in models — it’s in how those models are applied inside real‑world systems and how they support human relationships. That’s where you come in. We are looking for individuals who also are passionate about relationships — and if your skills follow your passions, you are in the right place. Our team is globally distributed and we welcome diverse backgrounds and perspectives. Creating an environment that is challenging, creative and focused on your growth is a top priority at Zingly. We put people first, inside and outside of work. Equal opportunity Zingly.ai is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. #J-18808-Ljbffr