Staff Backend Engineer

Quo’s teams power key systems that help thousands of businesses communicate better. As a Staff Backend Engineer, you will own the technical strategy for how we design, build, and operate features across the product. You’ll partner closely with leaders across engineering, product, and security to translate ambitious product ideas into scalable, dependable systems. Your architectural choices will shape key customer experiences and you’ll be trusted to balance cutting-edge innovation with rock-solid reliability.

Some Of The Things You’ll Do

• Design and own the long-term architecture for key systems - such as billing services or communication services.
• Lead cross-functional delivery of features from proof of concept to production rollout, partnering with others in engineering, product, design, and CX.
• Establish and drive continuous cost, performance, reliability, and security improvements for our systems.
• Mentor engineers through design reviews, code reviews, and technical coaching, raising the bar for excellence across teams.
• Stay current on advances in AI and other emerging technologies with best practices, translating insights into actionable roadmap proposals.

Tech Stack & Tools

• Our backend is built on Node using Typescript.
• Our AI Infrastructure uses temporal.io, vector DBs, libraries like Langchain and top-tier llm models.
• We use Kubernetes on AWS to orchestrate our infrastructure setup and deployment.
• The overall architecture is event-driven microservices with RabbitMQ at the center of it.
• We use a variety of databases for different purposes: Postgres, Mongo, Elastic, and Redis.
• We have the following clients - Web (React), Android and iOS.
• Observability Tools: Datadog
• Other Tools: Figma, Linear, Notion, and Slack

• Proven success leading architecture for business-critical services, balancing innovation with operational pragmatism.
• Expertise in event-driven and streaming architectures; you can reason about concurrency, ordering, and back-pressure under load.
• Track record of driving cost optimization, observability, and incident response.
• Excellent written and verbal communicator who aligns diverse stakeholders and produces clear, thorough design docs.
• Collaborative leader who mentors others, fosters psychological safety, and elevates the entire engineering organization.
• Comfortable with ambiguity, you break down complex problems, make informed trade-offs, and deliver iterative value quickly.
• Empathetic and customer-focused, you balance technical decisions with user experience and business impact.

The annual base salary range for this position is as follow, plus equity and benefits:

• SF Bay Area, Los Angeles, Seattle, Portland, Boston, New York, and Washington, DC Metro: $205,000 - $242,000 USD
• All other US Locations: $186,000 - $217,000 USD
• Canada: $189,000 - $222,000 CAD

The range displayed reflects the target for new hire salaries, and within this range, individual pay is determined by your skills and experience, as well as relevant education. Your recruiter can share more and answer questions about the specific salary range during the hiring process.

Salary is just one component of Quo’s total compensation package. Your total rewards package will include equity, extensive medical coverage, a monthly lifestyle stipend, and a flexible PTO policy.

Small businesses represent 99.9% of all companies, yet they’re still forced to choose between clunky, outdated enterprise phone systems or their personal phones. This multi-billion dollar market has been overlooked for decades, left to cobble together solutions that slow them down instead of helping them grow.

Quo is changing that. We bring calls, texts, and customer information together into one easy-to-use, AI-powered platform. We’re not just building a phone system. We’re setting a new standard for how businesses connect with their customers.

Driven by our values, we move fast, build with determination, and obsess over delivering value to the businesses that have been underserved for far too long.

Today, Quo is trusted by more than 90,000 companies and rated #1 in customer satisfaction on G2. We’re backed by Y Combinator, Tiger Global, Craft Ventures, Slow Ventures, and other top-tier investors. It’s safe to say we’re onto something big., We’re a remote-first company with a culture of trust, autonomy, and action. As we rapidly grow, we’re intentionally building communities in a handful of hub cities while continuing to hire great talent wherever they happen to live. If you’re looking for a place to do your best work, we’d love to hear from you.