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CaliforniaRemote · Hybrid · Onsite · Field · All Environments

CaliforniaRemote · Hybrid · Onsite · Field · All Environments

CaliforniaRemote · Hybrid · Onsite · Field · All Environments

1,033 backend python jobs at 501 companies in California

PromotedHiringCafe

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

2mo

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2mo

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

Senior Backend Engineer (Python)

San Francisco, California, United States

$175k-$250k/yr RemoteFull Time

Ellipsis Health

Ellipsis Health: AI-powered voice agent for healthcare care management.

4+ YOE4+ years building production back-ends in Python; real-time streaming; AWS/GCP/Azure; PostgreSQL/Redis; FastAPI/asyncio; HIPAA security.

Python, FastAPI, asyncio, WebRTC, WebSockets, gRPC, AWS, GCP, Azure, Kubernetes, Kafka, SQS, Pub/Sub, Terraform, PostgreSQL, Redis, OpenTelemetry

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2mo

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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1mo

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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1mo

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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1w

Backend Developer

San Francisco, California, United States

RemoteFull Time

CareerSwift

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.

Python, Java, Node.js, Go, C#, REST, GraphQL, SQL, NoSQL, Git, AWS, Azure, Google Cloud, Kubernetes

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2mo

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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1w

Sr Backend Engineer

San Francisco or New York

$167k-$219k/yr HybridFull Time

Quizlet

Quizlet: Digital learning platform providing study tools and flashcards.

4+ YOE4+ years backend or data engineering experience; strong SQL and data warehouse experience; proficiency in Python/Java/Scala; Elasticsearch/OpenSearch experience; experience building production data pipelines and backend services.

Elasticsearch, OpenSearch, SQL, Snowflake, BigQuery, Redshift, Python, Java, Scala, Airflow, Dagster, Prefect, dbt, REST, gRPC, Datadog, Prometheus, Grafana, Docker, Kubernetes, AWS, GCP, Azure, Spark, Kafka, Flink, FAISS, ScaNN, pgvector, LightGBM, XGBoost, BM25, HNSW, kNN

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1mo

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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3w

Backend Engineer - Oort

San Francisco or Golden or Toulouse

$140k-$190k/yr OnsiteFull Time

Loft Orbital

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.

Python, Docker, Django, GraphQL, GCP, AWS, Kubernetes, PyTest, Jest, React Testing Library, Playwright, Cypress

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2mo

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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2mo

Sr. Backend Engineer

San Francisco, California, United States

$150k-$200k/yr HybridFull Time

Hotdata

Hotdata: Building agent-native data infrastructure for AI applications.

7+ YOE7–10 years backend engineering; data infrastructure; distributed systems; experience with Rust/Go/Python/Arrow/DataFusion/Postgres; performance and scalable design.

Rust, Go, Python, Arrow, DataFusion, Postgres, cloud-native infra, serverless architectures

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Backend Engineer - Connectivity

San Mateo, California, United States

$125k-$160k/yr OnsiteFull Time

Verkada

Verkada: Sells integrated AI-powered cloud physical security hardware and software.

1+ YOE1+ years backend experience, BS/MS in CS or related, proficiency in Python and/or Go, experience with Redis/DynamoDB/Postgres, Kafka/SQS, Terraform/Kubernetes, and REST APIs.

Redis, DynamoDB, Postgres, Kafka, SQS, Terraform, Kubernetes, Python, Go, REST APIs

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1mo

Senior Backend Engineer

Germany or London or New York City or Los Angeles

$100k-$170k/yr HybridFull Time

Aurora

Aurora: AI-native travel and lifestyle management for high-performance individuals

5+ YOE5+ years building production backend systems; strong Python and Django experience; SQL, Celery, GCP and Terraform familiarity; experience with LLMs, RAG pipelines, observability, and production operations.

Python, Django, DRF, SQL, Celery, GCP, Terraform, Flutter, Vue, LLMs

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1mo

Senior Backend Engineer

San Francisco, California, United States

$200k-$230k/yr OnsiteFull Time

Sauron Systems

Sauron Systems: Autonomous robotic platforms for residential security and threat deterrence.

5+ YOE5+ years building production backend systems; proficiency in Go, Python, Rust, Java, or C++; experience with distributed systems, REST/gRPC, PostgreSQL/MySQL/Redis/DynamoDB, AWS, Docker, Kubernetes, and observability; strong system design and debugging skills.

Go, Python, Rust, Java, C++, REST, gRPC, PostgreSQL, MySQL, Redis, DynamoDB, AWS, Docker, Kubernetes, Kafka, NATS, RabbitMQ

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2mo

Backend Engineer

Mountain View, California, United States

HybridFull Time

Bespoke Labs

Bespoke Labs: Curating data and environments to train advanced AI agents.

Production systems, distributed infra, sandboxing; Python; cloud experience; collaboration with research teams; strong reliability mindset.

Python, Go, Rust, C++, Docker, Kubernetes, GCP, AWS, CLI

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3mo

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3mo

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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Backend Engineer

California or Colorado or Georgia or Idaho or Illinois or Kansas or Massachusetts or Maryland or Michigan or Minnesota or New Jersey or New York or Ohio or Oregon or Pennsylvania or Rhode Island or Texas or Washington

$180k-$220k/yr RemoteFull Time

Unit21

Unit21: Provides an AI-powered platform for fraud and money laundering detection.

5+ YOE5+ years in data/software engineering, experience with large-scale data processing, advanced SQL, Python/OOP, cloud platforms, and infrastructure-as-code (Terraform).

Apache Spark, Databricks, Flink, Beam, Python, SQL, AWS, Azure, Google Cloud, Terraform

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3mo

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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1mo

Senior/Staff Backend Engineer

New York City or San Francisco

OnsiteFull Time

Lighthouse

Lighthouse: Technology-driven platform for U.S. immigration and visa services.

5+ YOE5+ years building and operating production backend systems; strong in Python and TypeScript; experience with PostgreSQL, GraphQL, serverless, async and event-driven architectures; familiarity with LLMs and integrations (Slack, Linear, HubSpot, Front).

Python, TypeScript, PostgreSQL, GraphQL, Slack, Linear, HubSpot, Front, CRDTs, LLMs, serverless

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