Top Platform Engineer Jobs in San Francisco, CA

Deploys and maintains UDS and Kubernetes platforms in secure bare-metal environments. Responsibilities include configuring GPU compute, storage, and networking; managing infrastructure as code; supporting secure software delivery; troubleshooting platform services; and collaborating with mission stakeholders and engineering teams. The role is remote in the United States and requires U.S. citizenship, with 15–25% travel.

Designs and implements scalable, secure platform infrastructure across AWS, on-premises, and hybrid environments. Builds reusable Terraform modules, automation, CI/CD pipelines, and Policy as Code capabilities. Translates CMMC and enterprise security requirements into practical controls, including network segmentation, identity integration, logging, and monitoring. Partners with security and GRC teams, evaluates emerging technologies, mentors engineers, and drives platform standards through hands-on implementation.

Build and operate internal developer platforms, shared services, cloud infrastructure, delivery pipelines, and golden paths. Own reliability, security, observability, incident response, and cost optimization for production services. Shape platform architecture and engineering standards, advance AI-assisted software delivery, and mentor engineers across operating companies. The role is a hands-on principal individual contributor responsible for taking major platform capabilities from design through ongoing operation.

Build and own LangChain’s React component library and design system. Develop accessible, reusable UI components; translate design tokens and interaction patterns into code; create tooling for theming, versioning, testing, visual regression, and component discovery; and optimize build performance, bundling, dependency management, and package versioning. Collaborate closely with designers, product engineers, and platform teams to maintain a consistent, high-quality frontend foundation.

Own the architecture, design, versioning, and maintenance of Hyperbound’s public APIs and customer integrations. Build secure OAuth and OpenID Connect flows, solve data synchronization and rate-limit challenges, monitor production reliability, and rapidly resolve integration failures. Partner with the founding team on product priorities and strategic partnerships while taking end-to-end ownership in a fast-moving startup environment.

Design, build, and operate large-scale Kubernetes clusters and custom operators (CRDs) to orchestrate thousands of persistent AI agent workloads. Drive cluster scaling, autoscaling, scheduling, storage, networking, observability, and IaC. Troubleshoot distributed infrastructure, set best practices, and partner with backend, ML, and research teams to deliver a production-grade platform for long-running scientific workloads.

As a Backend Engineer at Brain Co., you will design, build, and operate backend services and data pipelines for AI products, focusing on robustness and scalability. You'll collaborate across teams and own the full service lifecycle while ensuring high availability and performance. You should have 3+ years of experience in production backend systems and a strong foundation in APIs and distributed systems.

As a Founding Platform Engineer, you will design the semantic layer powering our system, build internal platforms, and collaborate with product teams to optimize data workflows and architecture.

The Senior Platform Engineer will develop and maintain full-stack systems for Flux's platform, integrating APIs and ensuring performance and reliability.

Own and operate end-to-end billing across consumer and B2B: seats, usage, cost centers, bundling, international pricing and payments. Reconcile state across RevenueCat, Stripe, Sequence, enable rapid SKU/pricing rollout, build robust testing, and expand enterprise billing features and global payment coverage.

Build and own a multi-tenant platform connecting enterprise customers and sovereign deployments to inference infrastructure. Responsibilities include authentication, tenant isolation, quotas, rate limiting, usage metering, entitlements, public inference APIs, SSO, access controls, audit logs, data residency, and security testing. The role requires strong Python and backend or platform engineering expertise, API design experience, and familiarity with billing, credits, reconciliation, regulated environments, and enterprise identity systems.

Designs and owns Webflow’s foundational cloud and source-control infrastructure, including multi-account landing zones, networking, DNS, PKI, secrets, Infrastructure as Code, GitHub delivery pipelines, self-service hosting patterns, policy guardrails, observability, cost controls, and security baselines. Partners with SRE, security, and developer productivity teams to improve reliability, scalability, adoption, and performance while managing cloud vendors and tooling relationships.

Lead design and evolution of SentiLink's data platform for fraud detection. Architect scalable batch and streaming pipelines, improve reliability, performance, and observability, set engineering standards, mentor engineers, drive cross-team technical initiatives, participate in production support/on-call, and evaluate build-vs-buy and emerging technologies.

Design, build, and operate backend Go services and smart contracts that mint, burn, bridge, and reconcile wrapped assets across multiple chains. Own end-to-end delivery from smart contract deployment through API design, SLOs, and production rollout. Drive asset migration pipeline improvements, run on-call operations, build observability and runbooks, and mentor junior engineers.

Design and deliver blockchain network infrastructure and platform APIs, lead multi-quarter initiatives (chain integrations, re-architecture, data migrations), define APIs/SLOs/observability and on-call ownership, ship SDKs and platform primitives, establish data contracts, and simplify cross-chain operations to enable analytics, ML, and data engineering teams.

Lead the architecture and hands-on development of Skydio’s go-to-market platform using Python, SQL, TypeScript, Palantir Foundry, data engineering, and AI technologies. Build scalable applications, APIs, integrations, business ontologies, ETL pipelines, AI assistants, and autonomous workflows. Partner with executives and cross-functional teams, establish engineering standards, mentor engineers, and manage two entry-level AI Engineers while driving platform adoption and measurable business impact.

Build and scale Ironsite’s platform for construction labor management, craftsworker mobile experiences, integrations, APIs, dashboards, reporting, and internal AI labeling tools. Own end-to-end architecture, integrate with Procore, Autodesk, Trimble, payroll, and ERP systems, process high-volume model outputs, improve data quality, and mentor engineers. The role is on-site in the San Francisco Bay Area and supports reliable, high-scale web applications.

Lead design and implementation of the Tax platform: build scalable, fault-tolerant systems, improve extensibility, mentor engineers, drive technical strategy and roadmap, collaborate cross-functionally, improve reliability/incident response, and build AI guardrails to safely leverage agentic LLMs for tax compliance.

Build and maintain CI/CD pipelines, CMake-based build systems, on-vehicle deployment tooling, software-in-the-loop simulation infrastructure, and cloud-backed flight log pipelines to support development and fielded aircraft.

Own reliability, scale, performance, and developer experience for HUDs core infrastructure. Build and maintain AWS/Terraform/Kubernetes-based systems, CI/CD, observability, and deployment workflows. Drive incident response, cost optimization, autoscaling, and backend/design improvements; write automation and internal tools to improve reliability and developer productivity.

Lead the technical strategy for Coinbase's Data Platform, architecting data systems for AI/ML workloads and ensuring data reliability, performance, and cross-functional alignment.

Operate and maintain AWS infrastructure, including EKS, EC2, RDS/Aurora, ElastiCache, S3, and IAM. Manage deployments, build reusable Terraform modules and Helm charts, maintain GitLab CI templates, troubleshoot networking, IAM, and Kubernetes issues, and improve observability and platform stability with Datadog. Partner with application teams to communicate platform standards and participate in production on-call ownership.

Design and own Felix’s Internal Developer Platform, including scalable Kubernetes and cloud infrastructure, CI/CD pipelines, developer portals, observability, security, cost optimization, and infrastructure-as-code standards. Build MLOps and LLM deployment infrastructure, establish platform strategy, mentor engineers, advocate best practices, manage technical roadmaps, and align platform capabilities with product and engineering objectives.

Design and own Felix’s Internal Developer Platform, building scalable Kubernetes and cloud infrastructure, CI/CD pipelines, developer portals, observability, security, and cost controls. Lead infrastructure-as-code standards, MLOps and LLM deployment infrastructure, platform governance, and long-term technical roadmaps. Mentor engineers, advocate for platform best practices, and collaborate with product and engineering leadership to align infrastructure automation with business goals.

Design and own Felix’s Internal Developer Platform, including scalable Kubernetes and cloud infrastructure, CI/CD, developer portals, observability, security, cost optimization, infrastructure-as-code standards, and MLOps/LLM deployment pipelines. Provide technical leadership, mentorship, architectural guidance, roadmap ownership, and cross-functional alignment to improve developer experience, reliability, automation, and engineering velocity.