Top Software Engineer Jobs in San Francisco Bay Area, CA

Own the development and maintenance of large-scale React Native applications for iOS and Android. Lead architecture improvements, React Native upgrades, native module development, performance optimization, automated testing, CI/CD reliability, and production debugging. Collaborate with cross-functional product pods, contribute to technical discovery and architecture, mentor engineers, and raise engineering standards while delivering scalable, maintainable mobile experiences.

Build, maintain, and evolve Currents, a Kafka-based data export and streaming system processing tens of billions of messages daily. Lead software projects from concept through production, improve high-scale distributed systems, collaborate across teams, and mentor engineers. The role requires full-stack development, experience with foundational systems, Kafka or comparable technologies, and distributed systems or microservices expertise.

Build and maintain high-scale email delivery infrastructure, personalized messaging systems, subscription REST APIs, preference-management web pages, and customer email-domain dashboards. Develop new features, improve performance and resilience, and contribute to architectural decisions for systems delivering billions of emails monthly. Provide technical guidance, collaborate with teammates, and solve complex engineering challenges involving scalability and reliability.

Design, build, and operate foundational developer infrastructure across CI, build systems, deployment orchestration, and test platforms. Improve build speed, deployment safety, and test reliability while owning services end to end, including SLOs, observability, and on-call responsibilities. Partner with engineering teams to address platform pain points and lead cross-cutting technical projects through production.

Design, build, test, and scale Gusto’s payments infrastructure and platform. Make architectural decisions focused on fault tolerance, scalability, and modularity; modernize Ruby/Rails and TypeScript/React systems; collaborate across engineering, product, design, data science, and operations; deliver software supporting millions of businesses; and mentor fellow engineers.

Build and own Clouted’s full-stack platform for automating content distribution, campaign operations, creator management, and performance intelligence. Develop frontend and backend features, social-platform integrations, data pipelines, cloud infrastructure, and AI agent tooling. The role requires end-to-end product ownership, rapid execution, production reliability, and helping establish engineering standards in an early-stage startup.

Build and scale full-stack systems with a backend focus for an AI platform serving creator talent agencies. Responsibilities include designing resilient asynchronous workflows, agentic LLM systems, human-in-the-loop feedback infrastructure, stateful backend architecture, and fault-tolerant integrations with Google, TikTok, and Instagram APIs. The role requires strong product intuition, ownership, and in-person collaboration in San Francisco.

Build and ship full-stack features across customer applications, cloud backend services, fleet infrastructure, and on-robot systems. Develop web and mobile interfaces, telemetry and remote-operations tooling, deployment infrastructure, and observability systems. Debug issues across service boundaries, languages, and machines while collaborating with app, robotics, hardware, and ML teams. Required work spans TypeScript, Python or Go, distributed systems, APIs, streaming, containers, CI/CD, and cloud infrastructure.

Build and maintain customer-facing applications and backend systems across iOS, Android, VR, and web platforms. Develop intuitive robot interfaces, interactive 3D visualizations, and secure authentication and device-access flows. Integrate real-time APIs, streaming data, WebSockets, gRPC, and connected hardware while collaborating with engineering and UI/UX teams to create polished experiences for robot users.

Build and operate cloud infrastructure for a robotics fleet, including distributed backend services, low-latency inference serving, fleet and customer APIs, real-time robot communication, telemetry systems, and production reliability tooling. Responsibilities include GPU scheduling, autoscaling, networking across unreliable home connections, secure device identity and communication, database operations, monitoring, SLOs, deployments, and incident response.

Looking for a Founding Software Engineer to develop and implement software products for industrial automation, focusing on modern technology integration with manufacturing processes.

Build and own full stack features using React Native, Flask, and TypeScript. Occasionally travel to warehouses to observe software in action and perform live coding during go-lives. Collaborate closely with founders and the founding engineer, make technical decisions, and help scale infrastructure as needed.

Design, build, test, and optimize scalable control-plane and data-plane networking software. Develop APIs, improve performance, reliability, monitoring, and customer experience, support network products, establish engineering best practices, collaborate across teams, and mentor engineers. The role requires strong Go experience, distributed systems expertise, cloud and containerization knowledge, CI/CD experience, and familiarity with networking technologies including eBPF and XDP.

Build and own software connecting robots to customer businesses, including teleoperation and fleet management interfaces, task scheduling and dispatch, customer system integrations, performance dashboards, and mobile and web tools. The role involves working directly with on-site operators, designing real-time systems, and iterating quickly based on field usage.

Design and lead scalable backend systems supporting search, recommendations, personalization, metadata, ranking, and content discovery. Make architectural decisions for distributed services, APIs, indexing pipelines, caching, resiliency, observability, and high-throughput performance. Collaborate with product, data, machine learning, and platform teams; improve experimentation, developer productivity, deployment safety, and reliability. Mentor engineers, influence technical direction, and drive alignment across organizations.

Own and improve the software platform for autonomous underwater robots: deploy and update fleet software, build remote monitoring and high-bandwidth comms, expand simulation and testing, create operator/customer tooling, and execute field testing with international travel.

Join as an early founding full-stack engineer to architect, build, and deploy a scalable platform serving AI-driven voice applications. You will own frontend and backend development, design infrastructure with the CTO, and deliver reliable production systems for enterprise customers.

Design, develop, and optimize high-performance network datapath software for cloud infrastructure. Build packet processing, routing, forwarding, virtualization, observability, and hardware-accelerated networking systems across Linux hosts, kernels, user space, and NICs. Analyze and improve throughput, latency, CPU efficiency, scalability, and reliability; investigate production issues; create testing and benchmarking frameworks; author technical designs; collaborate across engineering teams; and mentor engineers.

Develop and support scalable cloud network products and control-plane software. Build APIs, distributed services, and high-performance systems; improve reliability, monitoring, tooling, and customer experience. Collaborate across networking teams to establish API contracts, contribute to architecture and development best practices, and deliver robust services using Go, Kubernetes, Docker, Kafka, gRPC, and related technologies.

Develop and deploy slot-game features in Unity and C#, including gameplay, UI/UX, engine systems, and creator tools. Build server-backend functionality, investigate and extend slot-engine systems, define technical tasks, and quickly resolve bugs. The role requires collaboration, strong communication, and delivery under deadlines, with opportunities to work on live mobile games and performance optimization.

Deploy across portfolio companies to understand challenges, solve technical problems, and deliver business-impacting software solutions. Build shared technology services and value-creation playbooks, use AI coding tools to accelerate development, and provide technical leadership and mentorship. The role requires adapting to diverse codebases and technology stacks while combining strong software engineering, strategic thinking, commercial awareness, communication, and hands-on problem-solving.

Build core systems at the intersection of software, hardware, and finance. Own full product lifecycles from customer discovery through production deployment, create abstractions for complex legacy systems, and design production-grade LLM solutions for underwriting, compliance, and document processing. The role emphasizes backend systems, infrastructure, architecture, full-stack development, and occasional field travel.

Join as the founding full-stack engineer to extend a TypeScript React/Next.js prototype, design product features, integrate AI/OCR, write tests and infrastructure, talk to users, and iterate quickly to drive growth.

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.