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Junior Software Developer Jobs in Hercules, CA (NOW HIRING)

Mechanize

Junior Software Engineer

San Francisco, CA · On-site

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 ...

Mechanize

Junior Software Engineer

San Francisco, CA

$144.23/hr

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 ...

Mechanize

Junior Software Engineer

Richmond, CA

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 ...

Mechanize

Junior Software Engineer

Richmond, CA

$144.23/hr

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 ...

Mechanize

Junior Software Engineer

San Francisco, CA · On-site

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 ...

Mechanize

Junior Software Engineer

San Francisco, CA

$144.23/hr

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 ...

Mechanize

Junior Software Engineer

Oakland, CA

$144.23/hr

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 ...

Mechanize

Junior Software Engineer

San Rafael, CA

$144.23/hr

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 ...

Finix

Senior Software Engineer

San Francisco, CA · On-site

$150K - $220K/yr

Become an expert in your payments domain and mentor junior software engineers * Proactively improve our architecture, frameworks, tooling, automation, and best practices You are * Experienced in ...

Finix

Senior Software Engineer

San Francisco, CA · On-site

$150K - $220K/yr

Become an expert in your payments domain and mentor junior software engineers * Proactively improve our architecture, frameworks, tooling, automation, and best practices You are * Experienced in ...

Finix

Senior Software Engineer

San Francisco, CA · On-site

$150K - $220K/yr

Become an expert in your payments domain and mentor junior software engineers * Proactively improve our architecture, frameworks, tooling, automation, and best practices You are * Experienced in ...

Prisms VR

Junior Content Developer

San Francisco, CA · On-site +1

$75K - $85K/yr

THE JOB Junior Content Developer We are seeking a highly skilled content and curriculum designer to ... Familiarity with VR hardware and software, such as Pico, Quest, or similar platforms * Experience ...

Prisms VR

Junior Content Developer

San Francisco, CA · On-site

$70 - $90/hr

THE JOB Junior Content Developer We are seeking a highly skilled content and curriculum designer to ... Familiarity with VR hardware and software, such as Pico, Quest, or similar platforms * Experience ...

Prisms VR

Junior Content Developer (Remote)

San Francisco, CA · Remote

$68K - $89K/yr

THE JOB Junior Content Developer We are seeking a highly skilled content and curriculum designer to ... Familiarity with VR hardware and software, such as Pico, Quest, or similar platforms * Experience ...

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All JobsSoftware Developer JobsJunior Software Developer JobsJunior Software Developer Jobs in Hercules, CA

Junior Software Developer information

See Hercules, CA salary details

$26.5K

$98.2K

$151.8K

How much do junior software developer jobs pay per year?

As of Sep 2, 2026, the average yearly pay for junior software developer in Hercules, CA is $98,239.00, according to ZipRecruiter salary data. Most workers in this role earn between $74,000.00 and $96,100.00 per year, depending on experience, location, and employer.

What does a junior software developer do?

A junior software developer works on a development team writing and maintaining code for computer applications. As a junior software developer, your primary responsibilities are to learn the codebase, work on small bug fixes, and participate in paired programming with mid-level and senior developers. Junior software developers are entry-level positions, but as you gain experience and build up your programming skills, you will start to take on larger projects. Your job duties include attending and contributing to development team meetings, troubleshooting, patching computer code, and collaborating with other developers to create applications.

What does a junior software developer do?

A Junior Software Developer is an entry-level professional who assists in designing, coding, testing, and maintaining software applications. They typically work under the supervision of more experienced developers and contribute to various stages of the software development lifecycle. Their responsibilities often include writing basic code, debugging, collaborating with team members, and learning new technologies to improve their skills. This role is a great starting point for individuals looking to build a career in software development.

What are the key skills and qualifications needed to thrive as a junior software developer, and why are they important?

To thrive as a Junior Software Developer, you need proficiency in programming languages (such as Python, Java, or JavaScript), algorithms, and problem-solving, often supported by a relevant degree or coding bootcamp experience. Familiarity with version control systems like Git, basic knowledge of databases, and experience with development frameworks are valuable technical assets. Strong communication, teamwork, and a willingness to learn help you adapt and contribute effectively in collaborative environments. These skills and qualities are essential for delivering reliable code, supporting team goals, and growing in a fast-evolving tech landscape.

What are some typical challenges a junior software developer might face when starting out, and how can they overcome them?

Junior Software Developers often encounter challenges such as understanding large codebases, managing their time effectively between learning and delivering tasks, and adapting to new development tools or frameworks. To overcome these hurdles, it's helpful to actively seek guidance from more experienced team members, participate in code reviews, and make consistent use of documentation. Regular communication within the team and a willingness to ask questions can significantly speed up the learning process and help build confidence in your role.

How much money do junior software developers make?

Junior software developers typically earn between $50,000 and $80,000 annually, depending on location, industry, and skills. Entry-level roles often require knowledge of programming languages like Java, Python, or JavaScript, and familiarity with development tools and frameworks.

How to get a junior software developer job with no experience?

To secure a junior software developer position with no experience, focus on building a portfolio through personal projects, contribute to open-source code, and learn relevant programming languages like Python or JavaScript. Gaining familiarity with version control tools such as Git and completing online courses or certifications can also improve your chances. Internships or apprenticeships can provide practical experience and industry exposure.
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Infographic showing various Junior Software Developer job openings in Hercules, CA as of August 2026, with employment types broken down into 1% As Needed, 81% Full Time, 15% Part Time, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $98,239 per year, or $47.2 per hour.

Junior Software Engineer

Mechanize

San Francisco, CA • On-site

Other

Medical, Dental, Vision, Life

This job post has expired today. Applications are no longer accepted.

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. Strong performers are recognized and promoted quickly. Benefits include health, dental, vision, and life insurance. Applying takes less than one minute.

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

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.

Apply