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Senior Python Developer Jobs in Rancho Cucamonga, CA

Senior Reliability Engineer

Riverside, CA · On-site

$108K - $135K/yr

We are seeking a Senior Reliability Engineer for an onsite position in El Segundo, CA, to evaluate ... such as Python, R, or MATLAB. * Strong analytical, problem-solving, organizational, and ...

SOFTWARE DEVELOPER (C++)

Norco, CA · On-site

$100K - $160K/yr

Navy. This position is ideal for a mid-to-senior level software engineer with strong C ... Familiarity with Python scripting and automation * Experience supporting U.S. Navy or Department of ...

Our Product Engineers work with developers and engineers to design, develop, certify, and release ... Experience using an application development language, such as C#, Java, C++, or Python * Strong ...

Job Purpose The Senior Finance AI & Automation Developer's primary responsibilities are to design ... Experience with Python and/or other code languages required * 6 Sigma Black Belt certification ...

Develop software solutions using C++ under the guidance of senior developers and technical leads ... Familiarity with Python scripting and automation * GIS (Geographic Information Systems) experience ...

As a software engineer, you will design and develop software used by organizations across diverse ... Python, JavaScript, TypeScript, Angular, C# * Experience using ArcGIS REST services or familiarity ...

Sr. GIS Solution Engineer - AEC

Redlands, CA · On-site

$55.50 - $71.75/hr

The Sr. GIS Solution Engineer will work as a subject matter expert to identify analysis tools ... as Python and JavaScript • Remarkable presentation, interpersonal, and listening skills • ...

... provide senior-level administration, engineering, and operational support for Linux-based ... using Ansible, Bash, Python, and CI/CD integrations to accelerate platform provisioning and ...

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Senior Python Developer information

See Rancho Cucamonga, CA salary details

$56.2K

$145.1K

$199.3K

How much do senior python developer jobs pay per year?

As of Jul 11, 2026, the average yearly pay for senior python developer in Rancho Cucamonga, CA is $145,087.00, according to ZipRecruiter salary data. Most workers in this role earn between $124,200.00 and $167,100.00 per year, depending on experience, location, and employer.

What are the main responsibilities of a Senior Python Developer?

A Senior Python Developer is responsible for designing, developing, and maintaining complex software applications using the Python programming language. They lead the technical aspects of projects, mentor junior developers, and ensure code quality through code reviews and best practices. Additionally, they collaborate with cross-functional teams to gather requirements, solve technical challenges, and deploy scalable and efficient solutions. Senior Python Developers are also expected to stay updated with the latest trends and advancements in Python and related technologies.

What is the difference between Senior Python Developer vs Python Developer?

AspectSenior Python DeveloperPython Developer
Required ExperienceTypically 5+ years, with leadership and complex project experienceUsually 1-3 years, focusing on core Python skills
ResponsibilitiesDesigning architecture, mentoring, handling complex systemsWriting code, debugging, implementing features
CertificationsOptional but beneficial (e.g., Python certifications, cloud certs)Often not required
Work EnvironmentCollaborative teams, project planning, code reviewsDevelopment-focused, task-oriented

The main difference between a Senior Python Developer and a Python Developer lies in experience, responsibilities, and leadership. Senior developers handle complex projects, mentor others, and often participate in architecture decisions, while Python Developers focus on coding and feature implementation. Both roles are essential in tech companies, but the senior role requires more experience and broader skills.

What are the key skills and qualifications needed to thrive as a Senior Python Developer, and why are they important?

To thrive as a Senior Python Developer, you need advanced proficiency in Python programming, experience with software architecture, and a solid understanding of algorithms and data structures, usually backed by a degree in computer science or related fields. Familiarity with frameworks like Django or Flask, version control systems such as Git, and containerization tools like Docker are typically required, alongside knowledge of modern CI/CD pipelines. Strong problem-solving abilities, effective communication, and leadership skills help you collaborate with teams and mentor junior developers. Mastery of these skills ensures the delivery of scalable, maintainable software solutions and the ability to drive technical excellence within development teams.

What are some common challenges faced by Senior Python Developers when leading a development team?

Senior Python Developers often encounter challenges such as balancing hands-on coding with mentoring junior team members and ensuring code quality across the team. They are also responsible for making architectural decisions, which requires staying updated on best practices and emerging Python frameworks. Additionally, coordinating collaboration between cross-functional teams (like DevOps, QA, and front-end developers) can be complex, especially in agile environments where requirements may shift rapidly. Overcoming these challenges helps foster a productive and innovative team culture.
What are the most commonly searched types of Python Developer jobs in Rancho Cucamonga, CA? The most popular types of Python Developer jobs in Rancho Cucamonga, CA are:
What are popular job titles related to Senior Python Developer jobs in Rancho Cucamonga, CA? For Senior Python Developer jobs in Rancho Cucamonga, CA, the most frequently searched job titles are:
What job categories do people searching Senior Python Developer jobs in Rancho Cucamonga, CA look for? The top searched job categories for Senior Python Developer jobs in Rancho Cucamonga, CA are:
What cities near Rancho Cucamonga, CA are hiring for Senior Python Developer jobs? Cities near Rancho Cucamonga, CA with the most Senior Python Developer job openings:

Senior Emissions & OBD Fleet Validation Engineer

Hyundai Motor Company

Chino, CA • Hybrid

$106K - $145K/yr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Posted 14 days ago


Job description

Senior Emissions & OBD Fleet Validation Engineer

About Hyundai America Technical Center, Inc. (HATCI)

Hyundai America Technical Center, Inc. (HATCI) serves as Hyundai Motor Group's North American R&D headquarters, supporting Hyundai, Kia, and Genesis products in one of the world's most competitive automotive markets. Our teams drive innovation across product planning, design, engineering, quality, testing, and advanced technology development.

In our main R&D center in Michigan, testing and development center in Chino, CA and additional engineering, development, and proving ground facilities in California, HATCI provides a dynamic environment where ideas accelerate into real-world vehicle advancements.

About the Team

The Emissions and OBD Validation (EMOV) team is part of the Electrified Propulsion division of HATCI. We advance propulsion efficiency and performance across Hyundai, Kia, and Genesis internal combustion and hybrid powertrains, directly shaping the refinement, competitiveness, and technological leadership of the vehicles our customers drive every day. EMOV leads local market testing and validation of engine and electrified propulsion management systems controlling vehicle emissions and diagnostics.

Position Overview

We are seeking a highly experienced innovative, detail oriented and self-driven Vehicle Emissions and OBD Fleet Validation Engineer to join our team in Chino, California. In this role you will support the validation of engine management and on-board diagnostics systems for pre-production vehicles that undergo extensive mileage accumulation and emissions durability testing. You will help ensure that our propulsion systems meet demanding emissions standards, operate with high reliability, and deliver exceptional customer satisfaction.  This position offers the opportunity to work directly with prototype vehicles, data intensive development programs, advanced calibration technologies, and cross-functional engineering teams. You will help shape the next generation of internal combustion, hybrid, and electrified propulsion systems through rigorous testing and data-driven insights. 

WHAT YOU WILL DO
Key Responsibilities

Lead comprehensive validation activities for engine management, emissions, and On-Board Diagnostics (OBD) systems utilizing pre-production vehicles deployed in long-term fleet testing programs. Ensure testing is executed in real-world operating conditions to support robustness, durability, and regulatory compliance objectives.

Set up and configure advanced vehicle instrumentation, including data loggers and sensors, and continuously monitor fleet vehicles to ensure accurate data acquisition, data integrity, and reliable test execution throughout the test lifecycle.

Lead complex and cross-disciplinary debugging activities involving hardware, embedded software, calibration, and full vehicle systems. Drive root cause identification through systematic investigation and collaboration with internal engineering teams.

Analyze high-resolution, second-by-second vehicle data captured from data loggers to identify early indicators of component degradation, system malfunctions, calibration deficiencies, or emerging reliability risks before customer impact.

Plan and conduct emissions testing at defined mileage accumulation intervals to verify emissions system durability, confirm compliance with applicable regulations, and ensure consistency with certification targets.

Analyze exhaust and evaporative emissions data to determine root causes of failures or performance deviations. Develop and communicate proposed countermeasures and corrective actions to technical counterparts and management.

Perform advanced data analysis using tools such as MATLAB, Python, or equivalent platforms to extract trends, correlations, and actionable insights that support data-driven engineering decisions.

Support fleet operation activities including calibration updates, software flashing, diagnostic evaluation, issue triage, and vehicle readiness assessments to ensure continuous fleet availability.

Investigate high-occurrence and emerging warranty issues through data analysis, vehicle history review, and cross-functional collaboration to support long-term quality improvements.

Prepare and deliver clear, concise technical summaries, reports, and status updates for engineering leadership and cross-functional stakeholders, translating complex data into actionable conclusions.

Manage administrative aspects of fleet testing programs, including budget tracking, vehicle utilization, test request planning, schedule management, and milestone documentation.

Evaluate new technologies, tools, and methodologies that support compliance with evolving emissions and OBD regulations while improving efficiency, accuracy, and development speed.

Plan, coordinate, and track project activities to ensure on-time delivery, high-quality execution, and alignment with program objectives.

Travel up to 15% domestically and internationally to support testing activities, emissions evaluations, and collaboration efforts.

Core Competencies

Demonstrated expertise in vehicle testing, calibration methodologies, and advanced data analysis techniques.

Strong ability to interpret global and regional regulatory requirements and convert them into structured, executable test plans.

In-depth knowledge of calibration development processes and associated engineering toolchains.

Proven experience diagnosing electrical, mechanical, software, and system-level issues in complex automotive systems.

Working knowledge of automotive communication networks including CAN, LIN, and Ethernet.

Solid understanding of emissions and OBD regulations established by the EPA and CARB.

Strong foundation in engine controls, combustion principles, and exhaust aftertreatment systems.

WHAT YOU WILL BRING TO THE ROLE
Basic Qualifications

Bachelor's degree in Mechanical Engineering, Electrical Engineering, or a related discipline
8+ years of experience in powertrain calibration, emissions development, OBDII calibration, or system validation
Strong understanding of propulsion system fundamentals, including hybrid powertrain operation
Hands-on experience with emissions testing, OBD monitor development, and vehicle test procedures
Working knowledge of automotive communication protocols such as CAN and LIN
In-depth knowledge of engine control systems, combustion principles, and exhaust aftertreatment fundamentals
Advanced experience using vehicle calibration and data analysis tools such as ETAS INCA and MDA
Experience setting up, monitoring, and reporting data from fleet vehicle dataloggers
Familiarity with emissions and OBD regulatory frameworks
Strong verbal, written, and interpersonal communication skills
Valid driver's license with a satisfactory driving record

Preferred Qualifications

Master's degree in Mechanical Engineering, Electrical Engineering, or a related field
10+ years of experience in fleet durability management, powertrain calibration, emissions development, OBDII calibration, or system validation
Experience with particulate matter (PM) emissions mitigation, including GPF calibration and development
Proven experience validating OBDII features through massproduction launch
Experience with APTIV datalogger equipment
Strong data analysis capabilities using MATLAB/Simulink and/or advanced Python-based analysis

WHAT HYUNDAI CAN OFFER YOU
  • Zero-dollar Employee Premiums on Medical, Dental, and Vision for You and Your Family
  • 100% Employer-paid Disability and Life Insurance
  • Generous Paid Time Off, Including Vacation, Sick, and Abundant Holidays
  • Hybrid Work Schedule
  • Competitive Salaries
  • A Global Environment that Fosters Diversity
  • Retirement Savings and Planning Benefits
  • Access to Health Savings Accounts and Flexible Spending Accounts
  • Flexible Work Hours
OTHER DETAILS

Candidates applying for positions with Hyundai KIA must be legally authorized to work in the United States. Verification of employment eligibility will be required at the time of hire.
HATCI is an Equal Opportunity Employer including Disabled and Veteran. VEVRM Federal contractor.

Hyundai America Technical Center, Inc. (HATCI) is an equal opportunity employer commited to a culturally diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, color, age, sex, national origin, sexual orientation, gender identity, disability status, other protected veteran status, and any other protected class under law.

Base salary range for this role: $115,000 - $155,000.