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533 backend python engineer jobs at 282 companies in Fairfield, CA

1w
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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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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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2d
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Remote Backend Engineer (Python/FastAPI)
San Francisco or United States or Berlin
€200-€300/hr RemoteContract
Turing
Turing: AI-powered platform connecting companies with global remote software developers.
3+ YOE3+ years software engineering experience, strong Python and JavaScript (React, Node.js) skills, production deployment experience, software architecture and debugging, excellent communication.
Python, FastAPI, JavaScript, React, Node.js, C/C++, Java, Rust, Go
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1mo
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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
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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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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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2mo
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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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1mo
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Sr. Backend Engineer
San Francisco, California, United States
$145k-$170k/yr HybridFull Time
LeapXpert
LeapXpert: Compliant enterprise communication platform for secure consumer messaging.
6+ YOE6+ years building backend/distributed systems, experience designing agentic runtimes and SDKs, multi-tenant isolation, async/concurrent patterns, secure API design, observability, and production-grade platform development.
Temporal, Claude Code, Codex, Gemini CLI, Go, Python, TypeScript/Node.js, Rust, Kubernetes, CI/CD, OpenTelemetry, Prometheus, Grafana, SQL, gRPC, Claude Managed Agents, Bedrock Agents, Google Agent Builder, Azure AI Services, Google ADK, Claude Agent SDK, OpenAI SDK, LangChain, CrewAI, AutoGen, MCP, Kafka, Neo4j
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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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1mo
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Staff Backend Engineer - Device Security
San Mateo, California, United States
$200k-$300k/yr OnsiteFull Time
Verkada
Verkada: Sells integrated AI-powered cloud physical security hardware and software.
8+ YOEBS/MS in CS/Engineering; 8+ years building Go/Python microservices on AWS with on-call experience; strong backend systems and architecture knowledge; familiarity with temporal, k8s, Docker, Redis, DynamoDB, Postgres, IAM, S3; IoT and security experience preferred.
Go, Python, AWS, temporal, k8s, Docker, Redis, DynamoDB, Postgres, IAM, S3
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2mo
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Semiotic Labs - Senior Backend Engineer
New York or San Francisco
RemoteFull Time
YieldNest
YieldNest: Liquid restaking protocol for risk-adjusted DeFi yields.
5+ YOE5+ years backend development in Python; async programming; deep PostgreSQL; multi-tenant data isolation; Redis; OpenTelemetry; AWS; strong system design and collaboration.
Python, FastAPI, Pydantic, Async SQLAlchemy, PostgreSQL, pgvector, Row-level security, Redis, OpenTelemetry, AWS, React, Vite
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2mo
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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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3w
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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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1mo
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Senior Backend Engineer, Ambient AI
Mountain View or San Francisco or New York City
$170k-$230k/yr OnsiteFull Time
Commure
Commure: AI-powered software platform for healthcare workflow and administrative automation.
Professional software development experience; strong backend skills with Python and web frameworks; experience with containers and cloud (Docker, Kubernetes); production systems, alerting, metrics, and SRE practices; leadership and customer-facing experience.
Python, Flask, Django, FastAPIs, Docker, Kubernetes, LLMs, EHRs
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2d
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Senior Backend Engineer, Managed Kubernetes & Slurm
New York City or San Francisco or Seattle
$180k-$250k/yr HybridFull Time
Lightning AI
Lightning AI: Unified platform to build, train, and deploy AI models.
Significant experience building and operating production backend systems with Go or Python, deep Kubernetes or Slurm knowledge, distributed systems, networking, observability, CI/CD, and production incident response.
Go, Python, Kubernetes, Slurm, Terraform, Crossplane, Helm, Argo CD, Flux, Kustomize, gRPC
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2mo
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Backend Software Engineer
San Francisco, California, United States
$125k-$150k/yr OnsiteFull Time
Lumafield
Lumafield: Accessible industrial CT scanners and cloud-based analysis software
2+ YOEBachelor's degree in Engineering or related field; 2+ years Python backend experience with web frameworks; experience with large dataset processing; strong software engineering fundamentals; team collaboration; Linux, Docker, production deployments.
Python, Django, Django Rest Framework, Celery, AWS (EKS, S3, CloudFront), Docker, Kubernetes, Linux
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3w
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Backend Software Engineer
San Francisco, California, United States
$100k-$130k/yr HybridFull Time
Ketch
Ketch: Data permissioning platform for automated privacy and compliance.
1+ YOE1+ year software engineering experience; strong backend development in Golang (or Java/Python/Scala); experience with cloud-native production systems, distributed systems, CI/CD, and databases; strong communication and collaboration skills.
Golang, Java, Python, Scala, AWS, GCP, Azure, Github Actions, Redis, Cassandra, DynamoDB, ScyllaDB, Postgres, ElasticSearch, git, GitHub, Kubernetes
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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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Staff Backend Engineer, Internal Products
San Francisco, California, United States
$200k-$250k/yr HybridFull Time
Twelve Labs
Twelve Labs: AI foundation models for video search and human-like understanding.
Experienced backend engineer with strong Python or Go skills, system design, building zero-to-one internal products, working with large unstructured datasets, and full-stack capability.
Python, Go, Claude Code
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1mo
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Backend Engineer (Contract - LATAM)
San Francisco or Buenos Aires or Argentina
RemoteContract
Nexus
Nexus: Develops a zero-knowledge Layer 1 blockchain for verifiable finance.
Experience building production backend systems; proficiency in Node.js, Rust, Go, or Python; relational DB and API design experience (PostgreSQL preferred); strong English communication and track record of shipping reliable software.
Node.js, Rust, Go, Python, PostgreSQL, Docker, Kubernetes, Terraform, AWS
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