Top Senior Backend Engineer Jobs in San Francisco, CA

Build and operate the backend platform for autonomous cybersecurity agents, including durable workflow execution, tool and connector frameworks, safe-change pipelines, tenant isolation, ETL, GraphQL services, observability, audit trails, and distributed systems. Partner with AI researchers and security engineers to productionize agent capabilities across customer environments while enforcing authorization, rollback, quotas, and data protection.

Design, build, and operate scalable backend services for payments, cards, spend management, and compliance. Develop production-quality services and APIs, optimize databases, integrate AI and third-party APIs, and implement secure event-driven architectures. Own features from design through deployment and monitoring, contribute to reliability and CI/CD improvements, participate in on-call rotations, and collaborate with globally distributed engineering, product, compliance, and data teams.

Develop and scale RESTful backend services and shared platform tooling using Java, Spring Boot, Postgres, AWS, and Kubernetes. Design resilient distributed systems, implement secure coding practices, and maintain automated testing. Collaborate with engineering leadership, product managers, and cross-functional teams while mentoring engineers and contributing to shared infrastructure. The hybrid role requires three in-office days weekly in Culver City or San Francisco.

Design and develop scalable backend systems using Kotlin, Micronaut, and Spring. Build RESTful APIs, optimize PostgreSQL and Elasticsearch databases, implement RabbitMQ-based asynchronous processing, integrate AI tools, and create automated tests. Deploy and monitor services on GCP using Docker, Kubernetes, and Terraform. Collaborate cross-functionally, participate in code reviews, troubleshoot performance issues, and deliver reliable backend products.

Architect and build highly reliable, scalable backend systems powering Uber One memberships across UberEats and UberX. The role involves platform evolution, microservices and API design, technical strategy, cross-functional collaboration, architectural decision-making, production deployment, monitoring, incident management, and engineering excellence. The engineer will lead complex technical initiatives and develop systems serving millions of global users.

Design and scale Cohere’s Model Vault backend and inference platform. Lead architecture for authentication, deployments, billing, metering, customer lifecycle, and cloud control-plane services. Build reliable distributed systems with strong guarantees for security, privacy, consistency, isolation, observability, and failure recovery. Drive technically complex initiatives from threat modeling and architecture through implementation, production rollout, operations, and iteration at enterprise scale.

Design, build, and optimize resilient backend services processing extremely high volumes of events. Own key system domains, develop product features, participate in code reviews and design discussions, collaborate with product and engineering teams, and use AI-assisted tools to improve development and distributed-system reliability. The role requires backend development, event-driven architecture, audit-trail analysis, strong communication, and large-scale web-service experience.

Design, develop, and maintain scalable, high-performance backend and middleware services on the JVM using Java and Spring/Spring Cloud. Build and enhance microservices, work with AWS and Docker, implement SQL/noSQL solutions (MySQL, Elasticsearch), use Git-based source control and JIRA, collaborate across engineering, design, and QA, and mentor teammates while following best practices and Agile methodologies.

Lead backend development to scale and harden API infrastructures, implement unit testing playbooks, optimize core algorithms, support migration from Supabase to a robust cloud provider, ensure system reliability and scalability, collaborate with frontend and DevOps, and integrate AI workflows and RPA where applicable.

Lead backend and infrastructure development for a high-traffic consumer web platform. Build feature infrastructure, recommendation and model-serving pipelines, and reliable production systems. Own monitoring, logging, incident response, API performance, data access, caching, asynchronous processing, live connections, abuse prevention, architecture, capacity planning, deployment, observability, and recovery decisions on a small, high-ownership team.

Design and build scalable financial data pipelines, data-serving platforms, and AI-enabling frameworks. Ensure data integrity and quality across sources, optimize query performance, troubleshoot data issues, and promote AI-assisted software development. The role requires expertise in Python or Java, databases, warehouses, ETL, batch processing, cloud infrastructure, and Kubernetes, with preferred experience in Snowflake, Airflow, and dbt.

Build and scale backend systems for Kikoff’s growth team and flagship credit-building product. Own initiatives end to end, from prototyping and analytics instrumentation through production rollout and user-facing improvements. Use data-driven decisions, experimentation, and machine-learning personalization to improve customer and business outcomes. Collaborate closely with startup-focused teammates while delivering measurable impact for millions of users.

Design, develop, test, and maintain backend services and APIs for secure fintech and crypto products. Collaborate with engineering and product teams on architecture, code reviews, system design, and deployment using Azure. Optimize backend performance and scalability, resolve defects, follow DevOps and CI/CD practices, and build reliable systems supporting payments, transfers, and other financial activity.

Lead backend engineering for a software platform, designing scalable services, AI-driven workflows, media generation pipelines, and live data systems. Own architecture across services, improve reliability through testing and monitoring, collaborate with research and product teams, define coding standards, mentor engineers, and document technical decisions. The role is fully on-site in San Francisco.

Build and operate reliable backend systems for complex government and enterprise data integrations. Responsibilities include designing bidirectional integrations, asynchronous workflows, retries, idempotency, observability, operational automation, debugging production systems, and creating reusable reliability patterns. The role involves TypeScript and Node.js development, database work, partner collaboration, mentoring, and improving support efficiency in a fully remote environment.

Own and lead backend products from architecture through production operation. Design high-traffic APIs and microservices, improve application and database performance, build real-time distributed data services, and enhance reliability, observability, automation, Kubernetes workloads, and cloud efficiency. Review code, establish engineering standards, coordinate dependencies, communicate tradeoffs, and drive ambiguous technical initiatives through rollout.

Build scalable backend services and infrastructure for mobile and web products. Design secure RESTful APIs, architect high-performance systems, apply engineering best practices, estimate and track Agile tasks, mentor teammates, collaborate with clients and engineers, and take ownership of technical solutions.

Design, build, test, and maintain high-volume, low-latency backend applications. Lead software development across the full lifecycle, analyze requirements, create technical designs and documentation, resolve technical issues, propose infrastructure improvements, and support architectural reviews. Collaborate with cross-functional teams to align technical solutions with business objectives while applying modern development practices and cloud technologies.

Design, build, operate, and maintain highly available distributed telemetry systems for Grafana Cloud and open-source projects. Deliver features end to end, improve reliability and performance, review code and designs, manage releases, participate in follow-the-sun on-call rotations, and collaborate remotely with teammates and customers. Work primarily with Go across Kubernetes-based cloud infrastructure and observability systems such as Mimir, Loki, Tempo, and Pyroscope.

Build and operate scalable database systems for an AI-native, multi-tenant SaaS data platform. Responsibilities include ingestion, query planning, distributed query execution, storage and data formats, retrieval APIs, tenant isolation, usage tracking, observability, and service reliability. The role requires architectural ownership, pragmatic experimentation, cross-functional collaboration, and production delivery across cloud-native environments.

Design, scale, and optimize ClickUp's search infrastructure using OpenSearch/Elasticsearch. Improve relevance, speed, and real-time indexing, build vector search capabilities, create evaluation frameworks, and collaborate with AI/backend/product teams to integrate and troubleshoot search at scale.

Build and own the graph layer and RAG architecture enabling agent reasoning over full patient context. Select graph DBs, design query patterns, and ensure temporal coherence. Implement event-driven Kafka pipelines for auditable, immutable agent workflows and enforce ReBAC permissions. Prioritize safety and scalable AI-assisted workflows, participate in spec and plan reviews, and drive architecture decisions.

Leads the design, development, and maintenance of complex backend software systems. Owns significant features end to end, makes architectural decisions, improves scalability and performance, ensures code quality, mentors engineers, and collaborates with cross-functional teams. Builds production-ready C# and .NET APIs within microservices and containerized environments, using cloud databases and services. Participates in code reviews, testing, debugging, and continuous improvement.

Build Nitra Business Banking backend infrastructure, including account opening, payments, ledgers, transaction processing, reconciliation, APIs, and financial integrations. Design reliable money movement across ACH, wires, RTP, and FedNow while ensuring auditability and financial correctness. Partner with sponsor banks and processors, make architecture decisions, document systems, identify risks, and mentor engineers. The role also integrates banking capabilities with cards, BillPay, expense management, accounting, and healthcare payment products.

Design, build, and operate backend services supporting external penetration testing, including Python APIs, workflow orchestration, ETL pipelines, AWS data lakes, GraphQL and graph APIs, Kubernetes infrastructure, and observability systems. Own service performance, scalability, uptime, deployment, and production operations while collaborating with product, design, and frontend teams. Contribute to architecture, technical documentation, platform stability, and user-facing launches.