Top Hybrid Senior Level Software Engineer Jobs in San Francisco, CA

Build and evolve Notion’s Developer Platform, including APIs, MCP tools, integrations, and automation infrastructure. Develop internal and customer-facing platform capabilities, improve product reliability, performance, and scalability, and partner with product, design, data science, and research teams to define strategy and deliver features. Identify high-leverage technical investments and own software features end to end.

Build and evolve backend payroll platform services and APIs used by multiple engineering teams. Own a core domain, ensuring correctness, scalability, reliability, performance, and observability. Lead architecture and design decisions, solve ambiguous technical problems independently, and partner with product and engineering teams on platform adoption. Collaborate cross-functionally to deliver compliant payroll capabilities while promoting responsible use of AI-assisted development tools.

Deploy and expand PagerDuty’s SRE Agent within strategic customer production environments. Build reusable agent tools, connectors, and skills; integrate with infrastructure-as-code, GitOps, CI/CD, and observability systems; run customer pilots; resolve adoption blockers; and contribute production code to the core product. Provide architectural guidance, define account roadmaps, evaluate agent capabilities, and help customers progress from AI-assisted incident response to safe autonomous operations.

Lead technical direction of Airwallex's mobile platform across iOS and Android. Design and evolve core architecture, own shared libraries and CI/CD pipelines, improve security, reliability, performance and observability, manage mobile releases and on-call, drive cross-team initiatives, and mentor engineers while defining mobile best practices and developer experience.

Design, build, deploy, and operate Philo’s scalable server-side ad insertion and programmatic advertising services. Develop resilient data pipelines, ad integrations, identity and measurement solutions, monitoring tools, and highly available microservices. Collaborate with ad ecosystem partners, video delivery, ad operations, data science, and business stakeholders to optimize ad delivery, reliability, performance, security, and compliance with industry standards.

Lead technical execution, architecture, roadmap, and delivery for the Loyalty product. Manage and grow engineering teams, drive design and operational excellence, ensure reliability/observability, coordinate cross-team integrations, and deliver scalable multi-tenant SaaS features integrated with Zeta’s platform and AI capabilities.

Design and build frontend experiences and components for the Cloudflare dashboard. Collaborate with design and systems engineers, own code from inception to release, and improve developer experience. Debug, optimize, and identify failure modes in large-scale frontend and distributed systems.

Build backend-leaning product features for Hex’s AI analytics platform, including APIs, CLI workflows, MCP integrations, access-control systems, enterprise administration, and full-stack product changes. Design scalable systems, implement complex business logic, collaborate through RFCs and code reviews, and contribute across the application stack. The role uses TypeScript, GraphQL, Postgres, Redis, Kubernetes, AWS, and related infrastructure technologies.

Design, build, and operate MongoDB Atlas features and distributed backend systems, with a focus on encryption, compliance, customer-managed keys, and cloud security across AWS, Azure, and GCP. Lead complex technical projects and fleet-wide production rollouts, collaborate with product, design, customers, and support teams, mentor engineers, resolve production issues, and participate in on-call support.

Build and improve Quanta’s financial systems and Operational Ledger as a full-stack product engineer. Design reliable APIs, data models, frontend and backend systems, and core abstractions for complex accounting workflows. Work closely with engineers, accountants, and customers to translate ambiguous finance problems into practical technical solutions. Own outcomes, ship customer-facing improvements, contribute to AI strategy, and help shape the platform’s long-term technical direction in a collaborative, in-person environment.