Top Senior Software Engineer Jobs in San Francisco Bay Area, CA

Build and operate Vercel Connect, a platform for agent identity, authorization, credentials, integrations, and event forwarding. Develop third-party provider integrations, authentication flows, token infrastructure, secure credential storage, SDKs, consent flows, and webhook systems. Improve uptime, performance, developer experience, and integration scalability while collaborating with external companies and internal teams. The role requires strong TypeScript, backend and frontend development, OAuth/OIDC expertise, and security knowledge related to integration systems.

Build and operate high-throughput backend services for AI agent orchestration, calendar and scheduling, real-time data pipelines, APIs, and integrations. Design scalable platform infrastructure using Go, PostgreSQL, Kubernetes, and cloud services. Collaborate with AI, product, and frontend teams, contribute to infrastructure as code, testing, reliability, and documentation, and mentor junior engineers.

Build and operate Vercel’s compute infrastructure across global regions. Responsibilities include writing Golang, provisioning infrastructure with Terraform, managing Nomad-scheduled clusters, working with Linux primitives, virtual filesystems, and virtualization, and improving platform reliability and performance. The role includes distributed systems development, cross-team collaboration, and on-call support.

Develop and support C++ features for Lens Engine and Lens Studio, enabling augmented reality experiences across Snapchat and Specs. Contribute to agentic development tooling, architecture, technical roadmaps, code reviews, and cross-functional engineering efforts. Improve code quality, reliability, performance, testing, maintainability, and developer productivity while integrating AI-assisted workflows and systems.

Build and launch complex backend projects, design scalable architectures, lead code reviews, resolve high-risk issues, and contribute to company-wide engineering initiatives. The role involves Java development, distributed systems, cloud platforms, databases, performance optimization, mentoring engineers, and influencing technical decisions across teams.

Design, build, and ship scalable backend features for Confluence Cloud AI automation and search. Develop RESTful microservices using object-oriented programming languages and work with relational and NoSQL databases in a distributed environment. Collaborate with engineering, architecture, product, and design teams; participate in Agile ceremonies; review code; and ensure reliability, security, performance, testing, documentation, monitoring, and error reporting.

Build and operate Block’s data platform, including warehousing, orchestration, business intelligence, governance, and agentic workflows. Develop reliable Python services, developer tools, and Terraform infrastructure for petabyte-scale data. Partner with data practitioners and product teams, establish engineering standards, provide technical direction, and mentor engineers while ensuring security, reliability, observability, usability, and data governance.

Build and operate a scalable data platform supporting warehousing, orchestration, business intelligence, governance, and agentic workflows. Develop Python services, Terraform infrastructure, and developer tools for petabyte-scale data. Partner with data practitioners and product teams, establish security and reliability patterns, set technical direction, improve engineering standards, and mentor engineers.

Leads the development and deployment of data solutions using Palantir Foundry and AIP. Manages engineering teams, coaches team members, oversees project planning and execution, analyzes system interactions, manages client relationships, and drives innovation. The role applies software engineering, data engineering, analytics, and AI/ML techniques to deliver scalable client solutions while maintaining technical and professional standards.

Leads the development and deployment of software and data solutions using Palantir Foundry and AI/ML technologies. Responsibilities include data engineering, analytics, system improvement, client account management, project ownership, team leadership, coaching, stakeholder engagement, and continuous improvement. The role requires building scalable applications with large datasets and delivering customer-focused solutions.

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.

Senior full-stack engineer who builds backend-heavy features and customer-facing React UIs. Own end-to-end delivery: design, implement, test, monitor, and iterate on scalable RESTful microservices using raw SQL and cloud patterns. Collaborate with product and design, review code, ensure reliability, security, and data correctness.

Lead technical direction and implementation of large-scale product features, delivering secure, reliable, maintainable full-stack software. Collaborate with product, design, and engineering teams, address production issues, conduct code reviews, document solutions, and mentor teammates. Build and test front-end and server-side systems using modern frameworks, APIs, databases, and data-driven development practices.

Build and operate high-throughput backend services for AI agents, calendar, scheduling, integrations, real-time data pipelines, and APIs. Design platform infrastructure, event-driven systems, and client-server protocols using Go, PostgreSQL, Kubernetes, and cloud platforms. Collaborate with AI, product, and frontend teams, improve reliability through testing and infrastructure as code, and mentor junior engineers.

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.

The Founding Engineer will lead the development of Sailor Health's AI-powered platform, building systems for patient care and mentor the engineering team.

Build the core AI platform for an AI-native trading experience. Develop a high-performance Rust backend supporting streaming responses, low-latency tool execution, caching, and model orchestration. Design secure, observable APIs and runtime components with authentication, authorization, rate limiting, auditing, tracing, retries, and fallbacks. Build safe trading action infrastructure with deterministic previews, confirmations, idempotency, and audit logs while partnering with product and frontend teams.

Build and ship backend features end-to-end using Ruby on Rails and SQL. Lead complex technical projects, solve architecture challenges, establish standards, conduct meaningful code reviews, resolve high-risk bugs, document systems, collaborate across engineering teams, and mentor junior engineers.

Build developer tooling and agent workflows that help engineers safely modify large monorepos. Develop CLIs, desktop integrations, agentic loops, observability interfaces, guardrails, tests, and automation. Lead framework upgrades, language migrations, dependency updates, and large refactors while improving developer workflow, codebase health, adoption, and engineering productivity. Set technical direction and mentor engineers on agent design and tooling.

Design and evolve shared backend infrastructure, including APIs, realtime transport, storage frameworks, background job systems, workflow orchestration, and internal tooling. Improve reliability, performance, observability, and security while partnering with product teams on reusable abstractions. Lead technical design discussions, drive migrations and refactors, mentor engineers, and help establish backend architecture and engineering standards.

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.

Build and operate high-performance Python and FastAPI backend services that ingest, process, store, replay, and distribute real-time radar sensor data. Own streaming pipelines, telemetry, geospatial views, sensor coordination, and platform architecture while ensuring low latency, reliability, security, and scalability. The role also involves end-to-end production ownership and collaboration on edge computing, cloud, and defense technology systems.

Design, build, release, and maintain customer-facing iOS applications for connected vehicle experiences, including navigation, EV charging, connectivity, and purchasing. Own complex mobile features from concept through production, collaborate cross-functionally, drive architecture and code quality, develop automated tests, troubleshoot performance issues, and mentor junior engineers.

Build and operate a frontend-focused engineering platform for AI autonomy workflows. Responsibilities include designing composable UI architecture, typed and versioned APIs, application lifecycle workflows, AI-agent integrations, backend services, and consistent local and production environments. The role partners with simulation, autonomy, and ML experts while collaborating across infrastructure, security, product, and design. Engineers own production applications through design, implementation, deployment, and support.

Design, implement, maintain, test, monitor, and debug Cloudflare’s distributed Load Balancing systems. Collaborate with security, network engineering, SRE, and product teams to build scalable, fault-tolerant solutions. Participate throughout the software development lifecycle, review code, mentor teammates, support production operations, and improve system reliability using Go, Rust, TypeScript, databases, containers, and orchestration technologies.