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1,819 backend developer jobs at 802 companies in California

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Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
Help us #BeatIndeed & #BeatLinkedIn
1mo
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Backend Engineer
Arvada or San Francisco or Washington or Seattle or Los Angeles
$120k-$180k/yr HybridFull Time
Quindar
Quindar: Cloud-native software for automated satellite mission operations.
3+ YOE3+ years backend development experience, proficiency with Python, AWS, GraphQL, Docker, Terraform, Kubernetes, Git; Bachelor’s in CS or related; U.S. Person required and ability to obtain U.S. security clearance.
Python, GraphQL, Docker, Terraform, OpenAI, Anthropic, AskSage, Kubernetes, EC2, S3, RDS, Fargate, EKS, Lambda, ECS, CloudWatch, EFS, EBS, Git, GitHub, GitLab, Fargate
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2mo
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Backend Engineer
San Francisco, California, United States
$190k-$230k/yr OnsiteFull Time
Lapel
Lapel: Unifying customer data to power personalized service at scale.
3+ YOE3+ years backend or software engineering; API design; backend architecture; Node.js/Python/Go; PostgreSQL/MySQL; scalable systems; customer-focused.
Node.js, Python, Go, PostgreSQL, MySQL, TypeScript, Temporal, Pulsar
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2mo
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Senior Backend Engineer
San Francisco, California, United States
OnsiteFull Time
Sirius Technology: AI-powered retention platform for subscription-based businesses.
5+ YOE5+ years backend experience; server-side programming; API development; scalable, database-driven applications; production systems.
Backend frameworks, APIs, Databases
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3w
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Backend Engineer
San Francisco, California, United States
$135k-$250k/yr HybridFull Time
Fable Security
Fable Security: AI-driven platform managing human risk and employee security behavior.
3+ YOE3+ years developing backend software; experience designing, implementing, and owning production services; familiarity with relational DBs (Django or similar), APIs, ETL/data pipelines, distributed systems, and cloud tooling (AWS, Terraform, EKS).
Kafka, Spark, Airflow, Django, AWS, Terraform, EKS, GenAI
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2mo
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Backend Engineer
San Francisco, California, United States
$140k-$290k/yr OnsiteFull Time
Paraform
Paraform: Marketplace connecting hiring companies with specialized recruiters and AI.
Deep backend expertise; pragmatic, operationally minded, high ownership; experience building production services, databases, and integrations.
PostgreSQL, REST APIs, CI/CD, Git, Authentication, Observability
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3mo
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Backend Engineer
San Francisco, California, United States
$190k-$220k/yr OnsiteFull Time
Wordware
Wordware: Full-stack operating system for building AI applications.
Senior backend-leaning full-stack engineer; onsite in San Francisco; full-time; $190k-$220k; US-based or relocation.
TypeScript, React, Next.js, Node.js, PostgreSQL, Cloudflare, AWS, AI model integrations
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2mo
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Backend Engineer
San Mateo, California, United States
OnsiteFull Time
Luminary Cloud
Luminary Cloud: Cloud-native physics simulation platform for accelerated product engineering.
10+ YOE10+ years building high-performance backend systems; Kubernetes expertise; SaaS focus; cloud infrastructure and security; leadership and mentoring; strong communication.
Kubernetes, Docker, GCP, CI/CD
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2mo
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Backend engineer
San Jose, California, United States
$150k-$200k/yr RemoteFull Time
Protocol Nine
Protocol Nine: Building AI-native security infrastructure for threat detection and response.
4+ YOE4+ years building backend or distributed systems; strong in Python, Go, Java, or TypeScript; experience operating production systems and building APIs/integrations.
Python, Go, Java, TypeScript, REST
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Backend Engineer
San Francisco, California, United States
$140k-$185k/yr HybridFull Time
Scribe
Scribe: Automatically documents digital workflows into step-by-step process guides.
3+ YOE3+ years building backend applications, strong Python skills, experience optimizing endpoints and database queries, automated testing, and collaborative engineering practices.
Python, Django, PostgreSQL, Redis, Celery, AmazonMQ, Terraform, AWS
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2mo
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Senior Backend Developer
San Francisco, California, United States
$160k-$210k/yr RemoteFull Time
Ellipsis Health
Ellipsis Health: AI-powered voice agent for healthcare care management.
5+ YOE5+ years backend development; strong TypeScript/Node.js; REST/GraphQL; orchestration layers; microservices; cloud platforms; Kubernetes; SQL/NoSQL; secure data handling; CI/CD; production ownership.
TypeScript, Node.js, REST, GraphQL, Kubernetes, AWS, GCP, Azure, PostgreSQL, MongoDB, DynamoDB, CI/CD
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1mo
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Senior Backend Engineer
San Francisco, California, United States
$175k-$275k/yr OnsiteFull Time
Hedra
Hedra: Builds artificial intelligence models for character-driven video generation.
5+ YOE5+ years backend development with Python, FastAPI/Pydantic; Kubernetes/EKS; relational databases; AWS stack; building scalable services.
Python, FastAPI, Pydantic, Kubernetes, EKS, PostgreSQL, Redis, S3, DynamoDB, AWS
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1mo
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Backend Engineer
San Francisco or North America or South America
$70k-$100k/yr RemoteFull Time
Clera
Clera: AI talent agent matching professionals with high-growth startup roles
3+ YOE3+ years building production backend systems (Python or TypeScript/Node), experience with distributed systems, queues, cloud infrastructure (AWS or GCP), relational databases, observability, and strong product ownership.
Python, TypeScript, Node, AWS, GCP, EHR, ASR, TTS, LLM
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3w
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Backend Engineer
Los Angeles, California, United States
$150k-$165k/yr HybridFull Time
SKIMS
SKIMS: Designs and sells intimate apparel and loungewear.
3+ YOE3+ years building backend applications with Python and Django; experience with AWS services (SNS, SQS, API Gateway, Step Functions, S3); strong communication, stakeholder collaboration, and production deployment experience.
Python, Django, AWS, SNS, SQS, API Gateway, Step Functions, S3, Claude Code, AWS Glue
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1mo
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Backend Engineer
San Francisco, California, United States
$130k-$200k/yr OnsiteFull Time
Sandberg Goldberg Bernthal Family Foundation
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.
Python, Node.js, Ruby, Java, SQL, NoSQL, RESTful APIs
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1mo
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Senior Backend Engineer
Madrid or Paris or Seattle or London or Berlin or San Francisco or New York City or Sydney or Mexico City
HybridFull Time
Aircall
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.
TypeScript, AWS, CloudFormation, Terraform, GraphQL
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2mo
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Engineer, Backend
San Mateo, California, United States
OnsiteFull Time
Bedrock Data
Bedrock Data: AI-native data security and governance platform for enterprise environments.
Backend engineer with experience designing scalable services; strong problem-solving; entrepreneurial mindset.
Golang, Python, Node, AWS, Neo4j, SQL
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3mo
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Backend Engineer, Integrations
Palo Alto, California, United States
$140k-$220k/yr HybridFull Time
Pylon
Pylon: API-first infrastructure for automated mortgage lending and operations.
Backend engineer skilled in building integrations, with experience in TypeScript/NestJS, GraphQL, SQL, and external APIs.
TypeScript, NestJS, GraphQL, PostgreSQL, Temporal, REST, SOAP, File-based APIs, AI tooling
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3mo
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Backend Engineer, Marketplace
San Francisco or New York City or London
$130k-$500k/yr OnsiteFull Time
Mercor
Mercor: Connecting expert human intelligence with frontier AI model development.
Build and operate reliable backend systems; design scalable APIs; optimize latency, throughput, and reliability.
Python, Go, Kafka, Postgres, Redis, Elasticsearch, Kubernetes, Terraform
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1w
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Backend Engineer
Sunnyvale, California, United States
$177k-$195k/yr OnsiteFull Time
GFiber: An Alphabet delivering fiber and webpass internet services to homes and businesses across the United States.
5+ YOE5+ years software design and full-stack experience with Java/Kotlin, microservices and distributed systems; 2+ years API development; experience with Spring Boot, GCP, container orchestration, and observability; bachelor's or equivalent.
Spring Boot, Kotlin, Java, Redis, Memcached, Kafka, RabbitMQ, Google Kubernetes Engine (GKE), Cloud Run, Google Cloud Observability (Stackdriver), OpenTelemetry, Vertex AI, Gemini, OpenAI, Anthropic, AntiGravity, Claude, Cursor, Google Cloud Platform (GCP)
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2mo
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Backend Engineer - PCB CAD Integration
Los Angeles, California, United States
$150k-$160k/yr RemoteFull Time
Quilter
Quilter: Automates printed circuit board layout using physics-driven AI.
3+ YOE3+ years backend software experience; expert Python; strong API design and distributed systems; leadership and collaboration; startup environment adaptability.
Python, Backend frameworks, AWS, Docker, Kubernetes, Terraform, JSON, XML, protobuf
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