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Python Developer Iii Jobs in Fontana, CA, US
31 python developer iii jobs from 16 companies hiring in Fontana, CA, US.
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Engineer, Software III
San Juan Capistrano, California, United States
$136k-$157k/yr HybridFull Time
7+ YOE7+ years in software development; OO design, distributed databases, data modeling; Java plus Python; cloud (Azure) and containers (Docker/Kubernetes); UI tech (JavaScript, AJAX, CSS, HTML); Agile (Jira/Confluence); Bachelor’s in CS or equivalent (preferred).
Java, Python, JavaScript, AJAX, CSS, HTML, Docker, Kubernetes, Azure, Jira, Confluence, GitHub Copilot
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Software Development Engineer III
Irvine, California, United States
$202k-$323k/yr OnsiteFull Time
6+ YOE6+ years of software development experience; design, build, and operate distributed systems; cloud-first with AWS; strong data engineering; API design; mentor engineers.
Python, AWS, Databricks, Spark, Airflow, DBT
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GNC Engineer III
Denver or Long Beach
$130k-$185k/yr OnsiteFull Time
5+ YOEBachelor’s in aerospace or mechanical engineering, 5-7 years GNC experience; strong C++/Python, spacecraft attitude dynamics knowledge.
C++, Python
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
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Senior Engineer III - Billing Systems
Los Angeles or Las Vegas
$140k-$198k/yr RemoteFull Time
12+ YOE12+ years of software development; 5+ years leading cross-functional architectural initiatives in high-compliance (FinTech/Banking/E-commerce); expert Java; maintain/refactor VB6, Python, Node.js; cloud-native architecture; SOX/PCI-DSS awareness.
Java, VB6, Python, Node.js
1w
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Software Engineer III, Android
Palo Alto or San Francisco or Los Angeles
$160k-$180k/yr HybridFull Time
2+ YOE2+ years native Android development; Kotlin; Gradle; CI/CD; experience with AI-native tooling; scripting (Python, Bash); developer tooling; strong communication and collaboration.
Kotlin, Gradle, CI/CD, Android, Python, Bash, CI/CD pipelines, Code generation tooling, AI-native development tools
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Software Engineer III – Ground Data Systems (Lunar Rover Mission)
Los Angeles or Altadena
$165k-$231k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
5+ YOE5-6 years of space vehicle software experience; Proficient in C++; experience with cameras, motors, sensors; hardware bring-up; requirements negotiation; Git; automated testing; CI; Python, RTOS, CMake preferred.
C++, Git, Python, RTOS, CMake
2mo
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Engineer III - Planner/Analyst - Airside/Terminal
Los Angeles, California, United States
$158k-$200k/yr HybridFull Time
5+ YOE5-12 years in airport planning, operations, simulation, and data analysis; proficient with MS Office; experience with CAST, Simio; CAD/BIM tools; data/statistical software (Python, R, SAS); analytical tools (Excel, PowerBI, Tableau, GIS).
CAST Gate/Stand Allocation, Simio, Python, R, SAS, Excel, PowerBI, Tableau, GIS, AutoCAD, Revit, BIM
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Cybersecurity Engineer III
Santa Ana or United States
$133k/yr HybridFull Time
5+ YOEBachelor's in cybersecurity or related field; 5-8 years in security engineering/architecture or cloud security; SIEM/EDR expertise; multi-cloud security; scripting and IaC; strong leadership and communication.
SIEM (Splunk), EDR/XDR (CrowdStrike, SentinelOne), next-gen firewalls, IAM, multi-cloud security (AWS, Azure, GCP, O365), CSPM, WAF, Terraform, Ansible, Python, PowerShell, Bash, Tenzir, Cribl, Observo
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Software Engineer III, Quantum
Los Angeles, California, United States
$147k-$211k/yr OnsiteFull Time
2+ YOEBachelor’s in CS/Engineering/Math/Physics plus 2 years in software engineering; experience in systems programming, HPC, distributed systems, data structures/algorithms; proficiency in Python, C++, Java, TypeScript, Kotlin, Rust, Qiskit/Cirq/JavaScript; exposure to quantum topics.
Python, C++, Java, TypeScript, Kotlin, Rust, Qiskit, Cirq, JavaScript, Distributed systems, High performance computing, GPU programming, Kernel development, Device driver development, Concurrency, Quantum computing, Classical Coding Theory, Graph Algorithms, Linear Algebra, Statistics, Numerical Algorithms, Generative AI
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MTS III, Software
Irvine, California, United States
$97k-$162k/yr OnsiteFull Time
5+ YOEBS in CS/CE/SE; 5-10 yrs software development; Python, C/C++; Linux, TCP/IP; experience with drivers, GTK/XUL/HTML/JavaScript; network security; travel up to 5%.
Python, C/C++, Linux, TCP/IP, GTK, XUL, PHP, JavaScript
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Software Engineer - AI Engineer II/III
Rancho Santa Margarita, California, United States
$80k-$140k/yr OnsiteFull Time
2+ YOEBachelor’s or Master’s in Computer Science or related field; 2+ years AI/ML experience; strong Python; experience with ML frameworks; knowledge of MCP, LLMs, AI agents; on-site collaboration.
Python, Git, Flask, PyTorch, TensorFlow, LangChain, LangGraph, AutoGen, Docker, Kubernetes, Pinecone, Milvus, ChromaDB, FAISS, OpenAI, HuggingFace
3w
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MTS III, Software
Irvine, California, United States
$93k-$157k/yr HybridFull Time
5+ YOEBachelor's degree in CS/CE/Software Eng; 5+ years with PHP, AWS; strong programming in Go/Java/Python; distributed systems; databases and APIs;CI/CD; observability; mentoring.
PHP, AWS, Go, Java, Python, APIs, CI/CD, Docker, Kubernetes, SQL, Data Modeling, Event-driven architectures, Monitoring, Observability, Logging
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Software Systems Engineer V
Pasadena, California, United States
$201k-$255k/yr OnsiteFull Time
12+ YOEBachelor’s degree in CS/IT with extensive enterprise software support; TS/SCI clearance with CI poly; IAT II/III or IAM II/III certs; 12+ years experience or 10+ with MS; active clearance.
Ansible, Ansible AWX, VMware, Jenkins, Gitlab, Artifactory, Jira, Confluence, Teamcenter, Thermal Desktop, LDAP, Active Directory, Kerberos, SSO, RSA MFA, Python, PowerShell, BASH, TrueNAS, NetApp, VergeIO, Docker, Kubernetes, Nomad, Podman, Red Hat Enterprise Linux, AWS GovCloud, USG Classified Cloud
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Embedded Firmware Engineer - The Toro Company
Riverside, California, United States
$83k-$120k/yr OnsiteFull Time
Bachelor's in electrical/computer engineering; 2-4 yrs (Engineer II), 5-7 yrs (Engineer III), 7+ yrs (Engineer IV); C/C++, RTOS; hardware interfaces; PCB design; MCU experience; Python learning; team player.
C/C++, RTOS, ORCAD, MCU, PCB Design, SPI, I2C, UART, CAN, Python, Security
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Staff R&D Engineer
Irvine, California, United States
$103k-$171k/yr OnsiteFull Time
4+ YOEBachelor’s in Mechanical or Biomedical Engineering; 4+ years; experience with Class II/III medical devices; SolidWorks expert; injection-molded part design.
SolidWorks, CAD, CAE, 3D printing, Mold design, LabVIEW, Python, CFD
HiringCafe market data
Python Developer Iii 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
31
Hiring companies
16
Fresh sample
44% new in 30d
Salary visibility
93% show pay
Companies appearing in this market
Blue OriginTrue AnomalyCapital GroupCornerstone ConciliumGooglePanasonic Avionics CorporationApplied MedicalConsensus Cloud Solutions
Work location mix in visible results
Onsite: 16Hybrid: 10Remote: 1