Full Stack Engineer (JavaScript/TypeScript

Join our engineering team to architect a real-time, transparent writing environment. You'll build end-to-end features-from high-performance frontends to robust backend services-delivering a seamless experience for classrooms at scale. What you'll do

• Ship full-stack product features in a JS/TS stack (React + Node.js)
• Design APIs, data models, and backend services that are reliable and scalable
• Build responsive, fast UI experiences that feel great in real-time workflows
• Improve system observability, performance, and reliability (metrics, tracing, on-call as needed)
• Collaborate with product/design to turn educator needs into usable features, Lead SRE work to keep Circle highly available and performant: respond to incidents, own monitoring/alerting/log management, manage and optimize MySQL/Postgres/ClickHouse/Redis databases, maintain server infrastructure and deployment pipelines, collaborate with engineering teams, and build internal SRE tooling and automation.

• 5+ years professional experience in JS/TS (Node.js + React)
• Strong product sense: you care about UX, adoption, and iterative shipping
• Experience building reliable systems (testing, CI/CD, monitoring, performance)
• Ability to work across frontend and backend without handoffs
• Clear communication and comfort making technical tradeoffs

Nice to have

• Cloud experience with GCP and/or AWS (deployments, managed services, observability)
• Postgres, Redis, queues, or event-driven architectures
• Work in education, compliance/privacy-adjacent environments, or B2B SaaS

Build end-to-end features in a JS/TS stack, designing scalable backend services and responsive real-time frontends. Improve observability, performance, and reliability, collaborate with product/design, and own full-stack implementation from APIs and data models to UI. The summary above was generated by AI About Rumi, * Competitive salary

• Comprehensive health insurance
• 15 days PTO annually
• Flexible working hours
• Redwood City office (in-person preferred; remote possible)
• Professional development support, Remote United States 131K-238K Annually Senior level 131K-238K Annually Senior level Artificial Intelligence * Productivity * Software * Automation Lead R&D FP&A: own forecasting, budgeting, variance analysis, and cloud (AWS) cost modeling; evaluate AI investments; build decision-ready models; support executive and board reporting; improve forecasting, tooling, and data quality. Top Skills: AWS Circle (circle.so), 11 Hours Ago Remote 165K-185K Annually Entry level 165K-185K Annually Entry level Productivity * Software * App development * Automation Manage inbound marketing leads and prospect named software companies. Qualify opportunities, collaborate with solution engineers, propose high-value document SDK solutions, gather market intelligence, and meet or exceed sales quotas through consultative selling and competitive positioning. Top Skills: DoolyOutreachSales NavigatorSalesforce CRMZoominfo

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With a business-friendly climate and research universities like CU Boulder and Colorado State, Colorado has made a name for itself as a startup ecosystem. The state boasts a skilled workforce and high quality of life thanks to its affordable housing, vibrant cultural scene and unparalleled opportunities for outdoor recreation. Colorado is also home to the National Renewable Energy Laboratory, helping cement its status as a hub for renewable energy innovation.

Key Facts About Colorado Tech

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