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Junior Python Engineer Jobs in California (NOW HIRING)

Senior Python Engineer

Ontario, CA · On-site +1

$123.60K - $166.40K/yr

Have extensive knowledge in Python tools and frameworks, scientific python and web development ... Enjoy collaborating with teammates, and mentoring junior engineers and interns * Are self-motivated ...

As a Backend Python Engineer focused on Identity and Authentication, you will develop large-scale ... Guides junior engineers * Operates with little day-to-day supervision, making technical decisions ...

As a Backend Python Engineer focused on Identity and Authentication, you will develop large-scale ... Guides junior engineers * Operates with little day-to-day supervision, making technical decisions ...

As a Backend Python Engineer, you will architect and develop large-scale, high-performance backend ... Guides junior engineers * Operates with little day-to-day supervision, making technical decisions ...

As a Backend Python Engineer, you will architect and develop large-scale, high-performance backend ... Guides junior engineers * Operates with little day-to-day supervision, making technical decisions ...

Sr. Python Developer

Palo Alto, CA · On-site

$143.20K - $192.70K/yr

Title: Sr. Python Developer Location: Palo Alto CA Duration: Long Term Contract Required Skills ... coach junior developers on their usage Efficient in database queries and data storage best ...

Sr. Python Developer

Palo Alto, CA · On-site

$143.20K - $192.70K/yr

Company Description Title: Sr. Python Developer Location: Palo Alto CA Duration: Long Term Contract ... coach junior developers on their usage • Efficient in database queries and data storage best ...

Help shape engineering best practices, mentoring junior developers as we grow About You: * 3+ years of backend engineering experience, with deep Python expertise * Strong background in building and ...

Data Engineer (SQL, Python)

Sunnyvale, CA · On-site

$134.40K - $161.40K/yr

... junior engineers. - Proactively monitor pipelines, address performance/reliability issues, document data architecture, and contribute to long-term data platform strategies. - Onsite role based in ...

Senior Python Developer

Palo Alto, CA · Hybrid

$142.80K - $192.20K/yr

Mentorship: Guide and support junior developers to foster technical growth within the team ... Mastery of Python. (We'll test you.) * Strong understanding of backend and API development ...

Senior Python Developer

Palo Alto, CA · On-site

$142.80K - $192.20K/yr

Mentorship: Guide and support junior developers to foster technical growth within the team ... Mastery of Python. (We'll test you.) * Strong understanding of backend and API development ...

Senior GenAI Engineer (Python)

Palo Alto, CA · On-site

$142.80K - $192.20K/yr

Mentorship: Guide and support junior developers to foster technical growth within the team ... Advanced proficiency in Python and libraries such as PyTorch, Pandas, NumPy, or similar.

Senior GenAI Engineer (Python)

Palo Alto, CA · Hybrid

$142.80K - $192.20K/yr

Mentorship: Guide and support junior developers to foster technical growth within the team ... Advanced proficiency in Python and libraries such as PyTorch, Pandas, NumPy, or similar.

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Showing results 1-20

Junior Python Engineer information

See California salary details

$33.1K

$70.9K

$108.1K

How much do junior python engineer jobs pay per year?

As of May 29, 2026, the average yearly pay for junior python engineer in California is $70,859.00, according to ZipRecruiter salary data. Most workers in this role earn between $47,900.00 and $79,000.00 per year, depending on experience, location, and employer.

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

To thrive as a Junior Python Engineer, you need a solid understanding of Python programming, basic software development principles, and a relevant degree or coding bootcamp experience. Familiarity with version control systems like Git, integrated development environments (IDEs), and common Python libraries such as Flask or Django is typically expected. Strong problem-solving skills, willingness to learn, and effective communication make a candidate stand out in collaborative development teams. These skills are vital for producing reliable code, integrating smoothly into team workflows, and growing quickly in a technical environment.

What are some typical projects or tasks a Junior Python Engineer might work on in their first year?

As a Junior Python Engineer, you can expect to work on a range of foundational tasks such as writing and debugging code, developing scripts for automation, assisting in the maintenance of existing applications, and supporting the implementation of new features under the guidance of senior engineers. You may also participate in code reviews, collaborate with cross-functional teams like QA or DevOps, and handle data manipulation or API integrations. This hands-on experience helps you build confidence and deepen your understanding of industry-standard development practices.

What are Junior Python Engineers?

Junior Python Engineers are entry-level software developers who specialize in using the Python programming language to build, test, and maintain software applications. They typically work under the guidance of more experienced developers, contributing to coding, debugging, and documentation tasks. Junior Python Engineers may also assist in writing scripts, automating processes, and learning best practices in software development as they gain experience. This role is ideal for recent graduates or those with limited professional experience in programming.

What is the difference between Junior Python Engineer vs Junior Data Analyst?

AspectJunior Python EngineerJunior Data Analyst
Required SkillsPython programming, basic data structures, scriptingData visualization, SQL, Excel, basic statistics
CertificationsPython certifications, coding bootcampsData analysis certifications, Excel courses
Work EnvironmentSoftware development teams, tech companiesBusiness intelligence teams, finance, marketing
Industry UsageSoftware, tech, startupsFinance, marketing, consulting

The main difference between a Junior Python Engineer and a Junior Data Analyst lies in their focus areas. Junior Python Engineers primarily develop and maintain software using Python, while Junior Data Analysts analyze data to generate insights. Both roles require some overlapping skills like basic programming, but their tools and end goals differ significantly.

What are the most commonly searched types of Python Engineer jobs in California? The most popular types of Python Engineer jobs in California are:
Senior Python Engineer

Senior Python Engineer

MongoDB

Ontario, CA • On-site, Remote

$123.60K - $166.40K/yr

Other

Posted 27 days ago


Job description

Our Database Experience (DBX) Team

A great MongoDB experience starts with great tools.

The Database Experience team builds the libraries and tools that developers use day-to-day working with MongoDB. Our mission is to increase developer adoption, satisfaction and retention by providing a reliable, enjoyable interface for developers and other end-users.

Our senior engineers are typically specialists in a particular programming language, but are capable of contributing to projects in other languages as well.

For this role, we're looking for someone who will enjoy designing, writing, and supporting open source libraries for the Python ecosystem developers that use MongoDB. This is an opportunity to make a major impact at MongoDB as Python is one of the most popular runtimes for MongoDB users, and our driver has over 3 million daily pypi downloads.

You might be right for this role if you...
  • Have substantial experience writing high-quality software in Python
  • Have extensive knowledge in Python tools and frameworks, scientific python and web development frameworks
  • Have practical experience with AI/ML frameworks and technologies in Python, including large language models and agentic tools are a plus
  • Have an interest in learning and staying up-to-date with Python ecosystem trends and best practices and incorporating them into your work
  • Can make pragmatic design decisions, balancing tradeoffs such as usability, maintainability and delivery time
  • Want to, or already do, participate in open source software development and communities, both online via e.g. GitHub and optionally through conferences and speaking engagements
  • Communicate well, internally and externally, both verbally and in writing
  • Enjoy collaborating with teammates, and mentoring junior engineers and interns
  • Are self-motivated, organized, and have strong time management skills
You'll be on the team responsible for...
  • Developing and supporting the MongoDB Python drivers and subsidiary libraries (PyMongo, Django MongoDB Backend, PyMongoArrow, LangChain MongoDB) and related software, collaborating with peers in our distributed world-wide engineering team
  • Writing and maintaining open source specifications defining common behavior and APIs shared across all of our drivers
  • Investigating bugs and support requests from commercial customers, open source users, and internal users for the libraries our team maintains
  • Working with our Product and Server teams on designs and specifications for new user-facing MongoDB features
Success in this role means...
  • Within one month, you will understand the high-level architecture of the drivers and how MongoDB works, and will have completed a few small bug fixes and/or feature tickets
  • Within three months, you will be contributing effectively day-to-day, fixing bugs, implementing features, investigating and responding to open source user and customer issues, and reviewing your peers' code
  • Within six months, you'll have implemented major, planned new features, contributed to our common driver specifications, shipped a major feature in an open source library, and will be collaborating with the Product team to help craft our roadmap
  • Within twelve months, you'll have significantly improved the quality, performance and maintainability of our codebase, and will be taking the lead in designing and specifying major new features
About MongoDB

MongoDB is built for change, empowering our customers and our people to innovate at the speed of the market. We have redefined the database for the AI era, enabling innovators to create, transform, and disrupt industries with software. MongoDB's unified database platform, the most widely available, globally distributed database on the market, helps organizations modernize legacy workloads, embrace innovation, and unleash AI. Our cloud-native platform, MongoDB Atlas, is the only globally distributed, multi-cloud database and is available across AWS, Google Cloud, and Microsoft Azure.

With offices worldwide and over 60,000 customers, including 75% of the Fortune 100 and AI-native startups, relying on MongoDB for their most important applications, we're powering the next era of software.

Our compass at MongoDB is our Leadership Commitment, guiding how and why we make decisions, show up for each other, and win. It's what makes us MongoDB. 

To drive the personal growth and business impact of our employees, we're committed to developing a supportive and enriching culture for everyone. From employee affinity groups, to fertility assistance and a generous parental leave policy, we value our employees' wellbeing and want to support them along every step of their professional and personal journeys. Learn more about what it's like to work at MongoDB, and help us make an impact on the world!

MongoDB is committed to providing any necessary accommodations for individuals with disabilities within our application and interview process. To request an accommodation due to a disability, please inform your recruiter.

MongoDB is an equal opportunities employer.

Req ID: 1273396098