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Entry Level Junior Software Developer Jobs in California

Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading ...

Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading ...

Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading ...

Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading ...

Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading ...

Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading ...

Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading ...

Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading ...

Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading ...

Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading ...

Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading ...

Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading ...

Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading ...

Showing results 41-60

Entry Level Junior Software Developer information

See California salary details

$23.7K

$87.8K

$135.7K

How much do entry level junior software developer jobs pay per year?

As of Aug 14, 2026, the average yearly pay for entry level junior software developer in California is $87,810.00, according to ZipRecruiter salary data. Most workers in this role earn between $66,100.00 and $85,900.00 per year, depending on experience, location, and employer.

How to get hired as an entry level junior software developer?

To get hired as an entry level junior software developer, candidates should build a strong foundation in programming languages like Java, Python, or C++, and create a portfolio of projects to demonstrate their skills. Gaining experience through internships, coding bootcamps, or certifications such as CompTIA or Microsoft can improve employability. Applying to entry-level positions through job boards and networking with industry professionals also increases chances of employment.

What are the key skills and qualifications needed to thrive as an entry level junior software developer?

To thrive as an Entry Level Junior Software Developer, you typically need a bachelor's degree in computer science or a related field and a strong grasp of programming languages such as Java, Python, or JavaScript. Familiarity with version control systems like Git, integrated development environments (IDEs), and commonly-used development frameworks is advantageous. Strong problem-solving skills, eagerness to learn, and effective teamwork and communication abilities help junior developers excel. These skills and qualities are vital for delivering reliable code, adapting to project needs, and contributing positively to collaborative software development environments.

What does an entry level junior software developer do?

As an Entry Level Junior Software Developer, you'll often start by assisting with coding simple features, fixing bugs, writing tests, and supporting the maintenance of existing software applications. You may also participate in code reviews, collaborate closely with more experienced developers, and attend regular team meetings to discuss project progress and requirements. Over time, you'll likely be given more responsibility, including developing new components or contributing to larger projects. This role offers a supportive environment with opportunities to learn new technologies, tools, and best practices from peers and mentors.

What is an entry level junior software developer?

An Entry Level Junior Software Developer is a beginner role in software development, responsible for writing, testing, and debugging code under the guidance of senior developers. They typically work with programming languages like Python, Java, or JavaScript and collaborate with teams to build software applications. This role allows new developers to gain hands-on experience, improve coding skills, and understand software development processes. Employers often expect a basic understanding of coding principles, problem-solving abilities, and a willingness to learn. It's an excellent starting point for a career in software engineering.

What are the most commonly searched types of Junior Software Developer jobs in California?

The most popular types of Junior Software Developer jobs in California are:

What are popular job titles related to Entry Level Junior Software Developer jobs in California?

For Entry Level Junior Software Developer jobs in California, the most frequently searched job titles are:

What job categories do people searching Entry Level Junior Software Developer jobs in California look for?

The top searched job categories for Entry Level Junior Software Developer jobs in California are:

What cities in California are hiring for Entry Level Junior Software Developer jobs?

Cities in California with the most Entry Level Junior Software Developer job openings:

Infographic showing various Entry Level Junior Software Developer job openings in California as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $87,810 per year, or $42.2 per hour.

Junior Software Engineer

Mechanize, Inc

San Francisco, CA โ€ข On-site

$300K/yr

Full-time

Medical, Dental, Vision, Life

Re-posted 26 days ago


Job description

About Mechanize
Mechanize builds reinforcement learning environments that frontier AI labs use to train and evaluate their coding models. Learn more at mechanize.work.
Why the work matters
AI models have gotten good at narrow coding tasks but still fail at the complex, judgment-heavy parts of software engineering. We build the environments that expose those failures and help models improve.
What you'll do
You'll design, build, and refine RL tasks. Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader. You own the full lifecycle: coming up with the idea, implementing the grading infrastructure, running frontier models against the task, analyzing where and why they fail, and iterating until the task is rigorous and fair.
Coming up with good task ideas requires being clever: finding situations where a frontier model will fail in interesting ways, which means seeing gaps that the model itself doesn't see. You will use coding agents heavily, and a large part of the job is directing them well, evaluating their output, and knowing when they are failing in subtle ways.
What makes someone good at this
Strong technical fundamentals combined with an intuition for AI model behavior. You need to anticipate where a model will take shortcuts, distinguish genuine capability gaps from grader issues, and understand how a model will interpret a prompt. Most engineers significantly underestimate what frontier coding agents can already do; candidates who have spent significant time working with them will have a real head start.
Good fit if you:
  • Have just graduated or are about to graduate
  • Can code in Python
  • Are confident working independently
  • Are motivated by problems that require both technical skill and creative cleverness
  • No prior ML or AI experience required

We're happy to hire candidates who are very capable, even if they have no prior professional software experience.
Probably not a good fit if you:
  • Want a product engineering role building features for end users
  • Prefer a highly collaborative team environment with shared ownership
  • Want extensive structured mentorship

This is independent, high-ownership work. You own your tasks from start to finish, with regular check-ins and feedback.
Compensation
Compensation includes a $300,000 base salary, equity, and performance bonuses. Top performers can earn more in bonuses than in base salary.
Strong performers are recognized and promoted quickly. Benefits include health, dental, vision, and life insurance.
About Mechanize. ~20 person team in San Francisco. Backed by Patrick Collison, Nat Friedman, Daniel Gross, Jeff Dean, Dwarkesh Patel, and Sholto Douglas. Featured in the New York Times, the Dwarkesh Podcast and Hard Fork.
Learn more about the interview process: https://www.mechanize.work/how-our-interview-process-works
Learn more about the work: https://www.mechanize.work/what-working-here-is-like