784 backend developer jobs at 395 companies in Cotati, CA
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Backend Developer
San Francisco, California, United States
RemoteFull Time
CareerSwift: AI-powered recruitment and job search automation platform
3+ YOE3+ years backend development, proficiency in Python/Java/Node.js/Go/C#, API design (REST/GraphQL/event-driven), SQL/NoSQL knowledge, API security, Git, automated testing and deployment workflows.
Pi: Agentic AI platform for automated software vulnerability remediation.
Strong backend application engineering experience with TypeScript or Python, API design, relational databases, async/background systems, debugging across services, and security best practices.
Clera: AI talent agent matching professionals with high-growth startup roles
5+ YOERequires 5+ years of backend development, strong DevOps, CI/CD and infrastructure-as-code experience, distributed systems expertise, secure scalable services, observability, and ML model production experience.
Sandberg Goldberg Bernthal Family Foundation: Operates programs for women's empowerment and community resilience.
3+ YOE3+ years backend or full-stack engineering experience with data/analytics; strong Python (preferred) or Node.js/Ruby/Java, SQL and NoSQL skills; experience building data pipelines, defining metrics, A/B testing, and data visualization; bachelor's in CS/data field or equivalent.
Madrid or Paris or Seattle or London or Berlin or San Francisco or New York City or Sydney or Mexico City
HybridFull Time
Aircall: Cloud-based business phone system and customer communication platform.
6+ YOE6+ years backend development with a typed language (TypeScript preferred), production AWS experience, infrastructure-as-code (CloudFormation or Terraform), security-first mindset, serverless experience, GraphQL a plus, on-call rotation and mentoring experience.
Plane: Open-source project management platform for planning and tracking work.
3+ YOERequires strong FastAPI and Python expertise, asynchronous programming knowledge, production backend scaling experience, database performance skills, and 3–5 years of backend development experience.
Loft Orbital: Deploy and operate satellite missions for organizations and governments.
Proficiency in Python and Docker, backend/API design and database interaction, experience with space mission technologies, strong communication and product mindset.
Town: AI-powered productivity assistant that automates workplace workflows.
Experienced backend engineer with production experience scaling distributed systems, LLM/agent infrastructure, workflow orchestration, and defining technical direction in fast-moving startups.
Casap: Building an AI-native disputes automation and fraud prevention platform with a mission to reduce fraud and streamline workflow for financial institutions.
6+ YOE6+ years in software development; at least 2 years with Go or Java in production; platform team/API/background services; end-to-end feature ownership; strong problem-solving and data structures knowledge; mentoring and technical leadership; strong communication.
Go, Java, CI/CD, microservices, backend development
Judgment Labs: Infrastructure for monitoring and optimizing autonomous AI agents.
6+ YOE6+ years building high-throughput backend systems; strong API design, data modeling, distributed systems experience; hands-on with ClickHouse/Presto; EM and platform collaboration skills.
Mochi Health: Provides telehealth weight management and prescription medication services.
5+ YOE5+ years backend engineering experience, strong distributed systems and data modeling skills, experience owning infrastructure (Kubernetes, Terraform, AWS), proficiency with TypeScript/Node.js, excellent communication.
TypeScript, Node.js, Express, PostgreSQL, Redis, Kubernetes, Terraform, AWS, Codex 5.3, Claude Opus 4.6
Arena Club: Digital marketplace and vaulting service for sports collectibles
8+ YOE8+ years backend experience, strong Node.js/TypeScript/Postgres skills, observability (Datadog), AWS and Terraform experience, marketplace/eCommerce background, familiarity with AI coding tools, and leadership/mentorship ability.
Atoms: Building robotics and software to automate physical world industries.
8+ YOE8+ years building backend systems with Java/Go, experience with PostgreSQL/MongoDB/Redis, cloud platforms (AWS/GCP/Azure), RESTful APIs, microservices, containers (Docker/Kubernetes), CI/CD, and mentoring experience.
San Francisco or New York City or Portland or United States or Canada
$167k-$208k/yrHybridFull Time
Mercury: Banking services and financial software designed for startup companies.
3+ YOE3+ years backend development experience, proficiency in SQL, familiarity or willingness to learn Haskell, product-minded, experience making architecture decisions, strong communication, and use of AI tools to boost productivity.
Orion Sleep: Manufacturer of AI-powered smart mattress covers for sleep optimization.
Experience designing APIs, scaling backend systems from 0-1, and building infrastructure to support product features; strong backend engineering and system-architecture skills.