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

Build web software prototypes with Data Scientists to demonstrate ML and AI model potential. Develop data visualizations, custom interfaces, APIs, and interactive experiences that validate ideas, support user studies, inform implementation approaches, and enable strategic decisions. Guide Data Scientists in prototyping while balancing development speed with realism.

Lead the design and evolution of LiveRamp’s petabyte-scale activation backend. Build and optimize distributed batch and streaming data pipelines using Spark, cloud infrastructure, warehouses, workflow engines, and messaging systems. Drive multi-tenant scheduling, reliability, observability, performance, cost efficiency, and production excellence. Define technical strategy, mentor engineers, collaborate across teams, and adopt AI-enhanced development and operations tooling.

Build and operate production software, APIs, tooling, and automation for large-scale GPU, bare-metal, and HPC infrastructure. Responsibilities include provisioning, configuration, monitoring, lifecycle management, observability, hardware integration, reliability improvements, and infrastructure capacity deployment. The role partners with networking, data center, platform, and infrastructure teams to design scalable systems and define technical direction.

As a Software Engineer III, you'll implement new features for Crunchyroll's iOS and Apple TV app, ensuring code quality and collaborating with teams on technical design and dependency management.

As a Software Engineer, you will design and build critical systems for enterprise customers, ensuring regulatory compliance and enhancing product capabilities. Your role involves technical leadership, architectural work, and mentoring team members, with a focus on scalable and reliable software solutions.

Join as a founding software engineer to build core product and infrastructure, collaborate with the founding team, and help shape technical direction. Role is in-person in San Francisco; compensation includes competitive salary and equity. Submit resume to the provided email.

Build and maintain production-grade frontend features for an agentic product security platform using TypeScript, React, and Next.js. Develop accessible, performant interfaces for security findings, investigations, remediation workflows, dashboards, forms, tables, and data-heavy views. Create reusable UI patterns, robust validation flows, and type-safe data integrations while contributing to frontend testing, architecture, accessibility, code reviews, and product decisions.

Build and operate full-stack applications and AI-facing features for CoreWeave’s internal data platform. Responsibilities include developing TypeScript, React, Next.js, and Python services; designing APIs and relational data models; integrating analytical data platforms; deploying on Kubernetes; and owning production reliability, testing, observability, and on-call support. The role also involves collaborating with non-engineers to define processes, shipping LLM-backed applications, and evaluating AI output quality.

Own and improve Gusto’s signup-to-activation experience across web, SMS, WhatsApp, and AI assistants. Build full-stack, customer-facing products from data models through UI; prototype AI-powered onboarding; partner with Product, Design, and Data; measure and iterate on outcomes; create modular foundations; and provide technical leadership, mentorship, and high-quality engineering standards.

As a Front-End Software Engineer, you will build AI-powered interfaces, tackle complex design problems, and collaborate across teams to enhance user experiences. Responsibilities include mentoring, implementing responsive UI, and engaging with AI technologies.

Architects and implements distributed system and instrument software for DNA synthesis hardware. Develops high-performance, low-latency pipelines handling multi-gigabyte to terabyte-scale data while maintaining end-to-end integrity. Collaborates with hardware, electronics, and chemistry teams to build and troubleshoot complex systems. Provides senior technical leadership and applies expertise in C#, C++, or Rust, memory management, multithreading, messaging, and inter-process communication.

Design, implement, and maintain backend services and APIs for customer and account workflows. Support Schwab integration and migration efforts involving customer data, account lifecycle, identity, KYC, and legal entity systems. Collaborate across Product, Engineering, Security, and Operations; write tests and documentation; participate in code reviews and deployments; and help maintain reliable, highly available production systems.

The Software Engineer will enhance large-scale simulation pipelines for validating autonomous vehicle behavior, focusing on cost efficiency, reliability, and performance improvements.

Build Retool’s automation platform, including Workflows and Agents, orchestration engines, execution infrastructure, AI integrations, and developer tooling. Design scalable distributed systems, collaborate with product and design, own projects from architecture through launch and iteration, improve platform reliability and performance, work with customers, and mentor engineers.

Build and scale backend platform services for an AI gateway, including streaming responses, provider integrations, authentication, rate limiting, usage metering, cost tracking, observability, and resilient distributed infrastructure. Collaborate with founders, research, product, and customers while contributing across platform and AI evaluation products. The role requires strong Golang experience, production backend expertise, and onsite work in San Francisco three days per week.

Design, maintain, and optimize encoding libraries and prompt-structure abstractions used across Anthropic. The role involves supporting multimodal data, running experiments on structured inputs, performing complex refactors, improving performance, and adapting systems for emerging AI research and production needs. The engineer will collaborate closely with researchers and engineers while maintaining intuitive APIs and enabling new encoding capabilities.

Build AI-powered systems for analyzing and generating iOS code, reliable backend services, scalable code-processing infrastructure, and an Xcode plugin. The role involves making architectural decisions, solving complex technical problems, and developing core features alongside the founding team. Candidates should have strong algorithms and data structures knowledge, backend or developer-tool experience, and a background in low-level systems or infrastructure. Xcode, iOS development, code analysis, and large-scale AI experience are preferred.

Build and improve backend services and APIs supporting secure, reliable video playback. Own projects involving content protection, streaming security, playback latency, publishing workflows, and availability testing. Collaborate across product and engineering teams, participate in on-call response, debug production issues, and improve testing, observability, documentation, and service reliability.

Design, develop, deploy, and maintain scalable customer-facing software, APIs, workflows, and data-driven services. Define technical requirements, create implementation plans, automate and test releases, review code and architecture, and drive technical decisions. The role includes mentoring engineers, identifying technical gaps, maintaining engineering excellence, and serving as a product-domain expert while collaborating with product managers, data scientists, team leads, and managers.

Build frontend, backend, and occasional mobile features for creator sponsorships. Own projects autonomously from product research and concept through implementation and deployment, collaborating with designers, writers, support staff, leadership, and sponsorship partners. Work across TypeScript, Node.js, Express, React, and PostgreSQL while contributing to product direction and delivering high-quality production experiences.

Lead engineering for critical customer projects, owning scope, sequencing, and delivery. Build and ship production features across Python backend and React/TypeScript frontend, partner with product teams, communicate directly with enterprise customers, diagnose problems, translate needs into technical specifications, and influence the long-term platform roadmap. The role requires strong product judgment, customer empathy, urgency, high-quality execution, and substantial ownership.

Build end-to-end full-stack features for cloud and factory-floor edge applications. Implement offline-capable, low-latency UIs and backend services, design APIs, write tests, troubleshoot production issues, and collaborate on shared libraries and developer tooling to support factory operators and supervisors.

Build safety and oversight infrastructure for AI systems, including behavioral monitoring, automated enforcement, internal dashboards, multi-cloud deployments, sandboxed agent runtimes, network and data access controls, audit logging, and observability. Manage platform capacity, costs, and service-level objectives while collaborating with researchers, engineers, security, privacy, and legal teams to deploy trusted detection and mitigation systems.

Build and own backend services for a private markets investing platform. Deliver end-to-end software across design, implementation, testing, deployment, and operations. Collaborate with product and engineering teams, iterate on ambiguous problems, apply distributed systems principles, and incorporate AI/LLMs for data extraction and document generation. Participate in recruiting and maintain high-quality delivery practices.

Build and own end-to-end software features for a private markets investing platform. Work across frontend (TypeScript/React/Next.js) and backend services (Python/FastAPI/AWS), contribute to design systems, testing, deployments, and product development while collaborating with product and stakeholders.