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Backend Python Developer Jobs in Fontana, CA, US
62 backend python developer jobs from 40 companies hiring in Fontana, CA, US.
1mo
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Staff Backend Engineer
Mountain View or New York City or Los Angeles or San Francisco
$200k-$250k/yr OnsiteFull Time
8+ YOE8+ years’ software development experience; strong Python/Go backend skills; experience with containers and cloud; excellent communication; ability to ship quickly.
Python, Go, FastAPI, Flask, Docker, Kubernetes
1w
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Backend Engineer
Los Angeles or San Francisco
$100k-$150k/yr RemoteFull Time
2+ YOE2-5 years backend experience; Bachelor's in CS or related field; cloud data pipelines; Python with data libraries; NLP familiarity; Git proficiency; strong communication and data integrity.
Python, Pandas, NumPy, SciPy, Git, GCP, NLP
1w
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Senior Backend Engineer
San Francisco or Toronto or Los Angeles or Raleigh
$168k-$210k/yr HybridFull Time
5+ YOE5+ years backend or full-stack experience; 1–2+ years in senior/lead roles; Node.js with TypeScript; GraphQL/REST APIs; distributed systems; strong CS fundamentals; ability to own projects end-to-end; AI tooling experience preferred.
Node.js, TypeScript, GraphQL, REST, Docker, Kubernetes, Python
2w
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Senior Backend Engineer
Los Angeles, California, United States
$150k-$195k/yr HybridFull Time
6+ YOE6+ years backend engineering; strong Node.js, TypeScript, PostgreSQL; experience building scalable eCommerce/online marketplaces; cloud (AWS/GCP); Docker/Terraform; AI coding tools; fast-moving startup environment.
Node.js, TypeScript, PostgreSQL, AWS, GCP, Docker, Terraform, GitHub Copilot, Tabnine, Python, APIs
3w
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Senior Backend Engineer - AI Product
Framingham or Los Angeles or Seattle
$165k-$215k/yr RemoteFull Time
5+ YOE5+ years backend experience; 3+ years Python; strong API, DB, and async framework skills; experience with AI tooling and LLM integration
Python, FastAPI, PostgreSQL, SQLAlchemy, Celery, Redis, Docker, Terraform, LangChain, LangGraph, Anthropic Claude, OpenRouter
1mo
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Senior Backend Software Engineer, Rodeo
San Francisco or Los Angeles or Oregon or California or Washington
$145k-$190k/yr HybridFull Time
7+ YOE7+ years backend systems, Python, cloud (AWS/GCP), microservices, video processing tools, and ML model integration.
Python, AWS, GCP, Docker, Kubernetes, FFmpeg, SageMaker, Triton, TorchServe
1mo
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Software Engineer, Backend
United States or Los Angeles
$86k-$103k/yr RemoteFull Time
3+ YOEDesigning and developing web applications using Python; REST and GraphQL API development; databases like PostgreSQL, Redis, Elasticsearch; testing; CI/CD in Kubernetes/EKS; AWS deployments; strong collaboration; AWS Cloud Practitioner or PCAP within 1 year.
Python, REST, GraphQL, PostgreSQL, Redis, Elasticsearch, GitLab, Kubernetes, AWS, Flask, Docker, New Relic, Okta, ServiceNow, Salesforce
1w
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Senior Software Engineer, Backend
Long Beach, California, United States
$159k-$267k/yr OnsiteFull Time
6+ YOE6+ years backend experience; BA/BS in CS/engineering; strong cloud, API, security, and distributed systems; proficient in Python/Go/Rust/C++
Docker, Kubernetes, Linux, API design, Security
1mo
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Software Engineer II - Open Distribution (Backend)
Los Angeles, California, United States
$165k-$200k/yr HybridFull Time
3+ YOE3-4 years in production software, backend or full-stack, with Java, Python, or Golang; experience with APIs and AI/agentic workflows; strong data and systems thinking.
Java, Python, Golang, APIs, AI/Agentic Systems
1mo
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Software Engineer, Horizontal Ops
New York City or San Francisco or Seattle or Los Angeles
$170k-$230k/yr HybridFull Time
5+ YOE5+ years backend software engineering in high-growth startups; BS in Computer Science; Python, PostgreSQL/MySQL; ownership mindset; problem solving; leadership and mentoring.
Python, PostgreSQL, MySQL
3w
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Software Development Engineer II- Back End
St. Louis or Redlands or Washington
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years backend software engineering; Python/JavaScript/Node.js and Java; REST APIs; ArcGIS Enterprise; containerized environments; geospatial data workflows; TS clearance; BS in CS/Math/GIS/STEM.
Python, Node.js, Java, ArcGIS Enterprise, Docker, Kubernetes, REST APIs
6d
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Software Engineering Intern, Backend & API
Glendale, California, United States
$25-$35/hr HybridInternship
C# coursework or project experience; REST API design; SQL and data skills; willingness to learn .NET specifics.
.NET, React, Capacitor, Python, Cursor, Copilot, Claude
2mo
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Senior Software Engineer, AI Platform
Austin or San Francisco or Irvine or Roseville
$173k-$200k/yr HybridFull Time
5+ YOE5+ years backend development; Python and/or TypeScript; distributed systems; API design; collaborative team player.
Python, TypeScript, Kafka, RabbitMQ, SQS
1w
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Software Engineer II - Systems Integration
Los Angeles, California, United States
$160k-$180k/yr HybridFull Time
2+ YOE2+ years backend experience; OO languages (Python/Go/Java); PostgreSQL; AWS or GCP; API development; startup-friendly mindset.
Python, Go, Java, PostgreSQL, AWS, GCP, CI/CD
1w
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Perception Engineer
Huntington Beach or San Francisco
$125k-$220k/yr OnsiteFull Time
7+ YOEProduction C++ on Linux and Python for ML/tooling; CUDA backends; PyTorch; 7+ years experience in CS/EE/Robotics.
C++, Python, CUDA, TensorRT, ONNX Runtime, PyTorch, Jetson, Linux
3mo
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Senior Full Stack Platform Engineer
Los Angeles, California, United States
RemoteFull Time
5+ YOE5+ years backend development with Django/Python; Kubernetes; REST/GraphQL; AI/ML workflows; real-time data processing; strong communication.
Django, Python, Kubernetes, REST, GraphQL, Git, Docker, React, TypeScript
1mo
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Ocean Advisor - Software Engineer
Laguna Niguel, California, United States
$100k-$180k/yr HybridFull Time
Strong Python skills, AWS cloud infrastructure expertise, experience with geospatial/satellite data, and secure, scalable backend design.
Python, AWS, Geospatial data, Satellite data
2d
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Software Development Engineer II
Los Angeles, California, United States
$159k-$255k/yr OnsiteFull Time
3+ YOEBackend engineer with SQL/postgreSQL, Python, ETL, REST APIs, AWS, Docker, CI/CD; strong problem-solving and collaboration.
SQL, PostgreSQL, Python, ETL, RESTful APIs, AWS, Docker, CI/CD, Terraform
1w
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Software Engineer
Los Angeles, California, United States
$100k-$150k/yr HybridFull Time
2+ YOE2-5 years in backend or full-stack engineering; strong Node.js, TypeScript, Python; experience with Serverless, React; Docker, Postgres, AWS; production AI solutions; distributed systems.
Node.js, TypeScript, Python, Serverless, React, Docker, PostgreSQL, AWS, Bedrock, Strands, LangChain, Vector databases, RAG pipelines, SQS, EventBridge
1mo
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Senior Full Stack Engineer
Beverly Hills or Los Angeles
$120k-$150k/yr HybridFull Time
5+ YOE5+ years software development; backend and frontend; agile; cloud infrastructure; REST APIs; BS in CS/Engineering; proficient in Python/Node.js/JS; AWS/GCP; Salesforce Marketing Cloud a plus.
Python, Ruby, Node.js, Go, JavaScript, TypeScript, REST, CI/CD, AWS, GCP, Salesforce Marketing Cloud
1mo
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Staff AI Engineer - Applied AI (Remote)
Los Angeles or United States
$207k-$243k/yr RemoteFull Time
8+ YOE8+ years AI/ML development; 5+ years Python; backend experience; foundation models; evaluation pipelines; LLM integration; AIOps; strong communication; Bachelor’s in ML or related field.
Python, JavaScript, TypeScript, Java, Go, LangChain, LlamaIndex, DSPy, Haystack, Pinecone, Weaviate, FAISS, Milvus, OpenAI, Anthropic, Bedrock, Gemini, RAG, tool calling, vector databases
1d
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Software Engineer II
Glendale or New York or Seattle
$118k-$165k/yr HybridFull Time
3+ YOE3+ years software engineering; backend development; distributed systems; AWS; Kubernetes; observability; strong collaboration.
Go, Java, Python, Node.js, AWS, Kubernetes, Grafana, Prometheus, OpenTelemetry, Datadog, New Relic, OpenSearch
1mo
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Application Developer, Consultant
Oakland or Long Beach or El Dorado Hills or Lodi or Rancho Cordova or Redding or San Diego or Woodland Hills
$123k-$185k/yr HybridFull Time
7+ YOE7+ years in full stack development; BA/BS or equivalent IT experience; front-end frameworks React/Vue/Angular; backend with .NET/Java/Node.js/Python; SQL/NoSQL and REST; cloud-native apps (Azure preferred; AWS/GCP OK); Docker; IaC (Terraform/Ansible/Bicep/ARM); CI/CD and Git; AI-assisted coding tools; healthcare experience preferred
React, Vue, Angular, JavaScript, TypeScript, .NET, Java, Node.js, Python, SQL, NoSQL, REST, Azure, AWS, GCP, Docker, Terraform, Ansible, ARM, CI/CD, GitHub, GitLab, Bitbucket, GitHub Copilot, Claude, Epic
2mo
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Senior Software Engineer
Los Angeles, California, United States
$160k-$190k/yr OnsiteFull Time
6+ YOE6+ years software experience; AI-native workflow; Python backend with ORM and async; TypeScript/React/Next.js frontend; AWS multi-tenant SaaS; GraphQL API design.
Python, Next.js, TypeScript, React, GraphQL, PostgreSQL, AWS, pytest, Jest
2mo
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Senior Software Engineer - Platform Engineer, Infrastructure
Glendale, California, United States
$142k-$208k/yr OnsiteFull Time
5+ YOEBachelor’s degree (Master’s preferred) in CS/Engineering or related field; 5+ years backend/platform experience; proficient in Python, Typescript or Go; AWS; Kubernetes/Docker; Terraform; strong problem-solving and communication.
Python, Typescript, Go, AWS, Kubernetes, Docker, Terraform, Spinnaker
3w
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Staff Fullstack Engineer
San Francisco or Los Angeles or Portland or Seattle
$214k-$235k/yr RemoteFull Time
Senior staff engineer focused on AI/ML-driven backends, with Node.js, Python, React, TypeScript, and cloud experience (AWS/GCP), building scalable APIs, data pipelines, and cross-stack collaboration.
Node.js, Python, React, TypeScript, AWS, GCP, Aurora, RDS, S3
2mo
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Staff Software Engineer, Growth Notifications, Level 6
Bellevue or Los Angeles
$229k-$343k/yr OnsiteFull Time
9+ YOE9+ years software development; backend/distributed systems; leadership across teams; observability and reliability focus.
Java, Go, C++, Python, Kafka, Google Cloud, AWS, Memcached, Redis, Cloud Tasks, Pub/Sub
1w
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Senior Google Cloud Developer & Home Improvement Domain Expert
Irvine, California, United States
OnsiteFull Time, Contract
Strong Google Cloud Platform and Firebase expertise; full-stack/backend development; AI-assisted workflows; home improvement domain knowledge.
Google Cloud Platform, Firebase, Python, PHP, Java, React, AI tools, Antigravity, Gemini, Cursor
2mo
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Senior Staff Software Engineer
Los Angeles, California, United States
$200k-$260k/yr OnsiteFull Time
8+ YOE8+ years backend software engineering; distributed systems; AWS; Python/Node; REST APIs; Docker; Kubernetes; Postgres/Redis/time-series DBs; observability; scaling; eager to work in Los Angeles.
AWS, GCP, Python, Node, TypeScript, REST, Docker, Kubernetes, Postgres, Redis, HL7, FHIR, SFTP, webhook
2mo
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Staff AI Systems Engineer
United States or New York City or Boston or Chicago or Denver or Los Angeles or San Francisco or Austin
$200k-$225k/yr RemoteFull Time
5+ YOE5+ years building and shipping ML systems; strong backend Python/JS; experience with LLM agents, ML platforms, cloud infra; observability and evals; remote work capable.
LangChain, LangGraph, vLLM, OpenAI API, Gemini API, Anthropic API, MCP, Postgres, Redis, Prometheus, Grafana, OpenTelemetry, LangSmith, Langfuse, TensorRT, PyTorch, Kubernetes, Terraform, Express, FastAPI, REST, SSE, JWT, AWS
1mo
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Staff Software Engineer, Enterprise Services
Palo Alto or Irvine or Atlanta
$173k-$258k/yr HybridFull Time
5+ YOEBachelor’s or Master’s in CS/Information Systems; 5+ years software engineering; strong system design, distributed architectures, async; backend in Java/Python/Go/C#; frontend (React/Next.js); cloud (AWS/Azure/GCP); Docker/K8s; Kafka/RabbitMQ; AI tooling; ITIL/ITSM familiarity; focus on automation and user experience.
Java, Python, Go, C#, React, Next.js, AWS, Azure, GCP, Docker, Kubernetes, Kafka, RabbitMQ, GitHub Copilot, Cursor, ITIL/ITSM
3w
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Web Interface Software Engineer
Los Angeles, California, United States
$43-$57/hr HybridAll Commitments Available
1+ YOEBachelor’s degree in Electrical Engineering, Computer Science, or Computer Engineering; 1+ year JavaScript, HTML, Python backend; mobile-friendly web interfaces; U.S. Person due to federal contracts; background check and drug test.
1d
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Tech Consulting - Full-Stack C# Developer - Senior - Multiple Locations (Los Angeles, CA, US, 90017-5418)
Los Angeles, California, United States
$103k-$188k/yr HybridFull Time
3+ YOESenior Full Stack Software Engineer with 3+ years of experience; proficient in Python/Java/C#/JavaScript/TypeScript; experience with RESTful APIs, frontend and backend frameworks; cloud and CI/CD; capable of AI-driven features.
Python, Java, C#, JavaScript, TypeScript, React, Angular, Node.js, Spring, .NET, Git, CI/CD, Cloud
2mo
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Software Engineer, Data
Los Angeles or Palo Alto or San Francisco
$180k-$220k/yr HybridFull Time
3+ YOE3-5+ years backend data processing; Python and SQL; Kafka, Spark; Snowflake/Databricks; AWS/GCP; CS/Engineering degree.
Python, SQL, Kafka, Spark, Snowflake, Databricks, AWS, GCP
2mo
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Senior Software Engineer (Full-Stack)
Los Angeles, California, United States
HybridFull Time
5+ YOE5+ years of progressive software engineering experience; strong backend and frontend expertise; cloud and database proficiency; mentoring capabilities.
Python, Go, Node.js, React, Vue, Angular, PostgreSQL, MySQL, MongoDB, AWS, GCP, Azure, Docker, Kubernetes
3mo
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Data Engineer III
Los Angeles or San Francisco or Dallas
$148k-$185k/yr HybridFull Time
5+ YOE5+ years backend engineering, microservices, APIs, event-driven systems; strong TypeScript and Python; AWS; DB design (relational, NoSQL, graph).
TypeScript, Python, Node.js, AWS, Docker, Kubernetes, Kafka, SNS/SQS, EventBridge, Kinesis, DynamoDB, PostgreSQL, MySQL, Neo4j
1mo
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Senior Quality Assurance Engineer - Cloud Services
Irvine, California, United States
$135k-$170k/yr OnsiteFull Time
5+ YOE5+ years in cloud service testing or backend system testing; strong distributed systems knowledge; experience with Docker/Kubernetes; AWS; backend tech like MySQL/MongoDB/Kafka; Python/Java; performance/reliability testing; strong communication.
Docker, Kubernetes, AWS, MySQL, MongoDB, Kafka, Python, Java
1mo
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Sr Data Quality Engineer - SDET
New York or Los Angeles or San Francisco
$140k-$170k/yr HybridFull Time
5+ YOE5+ years in data quality, data engineering, or backend engineering with automated testing and data validation; strong Python and SQL; pytest; Airflow/Databricks; Great Expectations is a plus; BS/MS in CS/Engineering or related field.
Python, SQL, Airflow, Databricks, Great Expectations, pytest
1mo
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Lead Full Stack Engineer, Insights
Berlin or London or New York or Los Angeles
HybridFull Time
Architect and scale backend systems; proficient in Scala or Go; strong frontend with Next.js/React; Terraform; AI-native tooling; leadership and communication skills; cloud (GCP/AWS) experience preferred.
Scala, Golang, BigQuery, SQL, Next.js, React, Terraform, AWS ECS, Python, Airflow, GCP
3w
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Staff AI Platform Engineer
San Francisco or Los Angeles or New York
$200k-$250k/yr HybridFull Time
Deep experience building AI/ML platforms at scale; backend/distributed systems; hands-on LLM production; AI infrastructure; operating in fast-moving environments; mentoring; ownership mindset.
Python, LLMs, Distributed systems, AI infrastructure, Pipelines
HiringCafe market data
Backend Python Developer Jobs market signals in Fontana, CA, US
These signals come from live HiringCafe job inventory, not a static article. Use them to compare the market, then open listings above to apply directly.
Open jobs
62
Hiring companies
40
Fresh sample
45% new in 30d
Salary visibility
91% show pay
Companies appearing in this market
EYStubHubWhatnotDisneyGoodLeapCommureEsriMoon
Work location mix in visible results
Hybrid: 34Onsite: 16Remote: 8