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Java Developer Volunteer Jobs in Fremont, CA (NOW HIRING)

Vertex Sigma Software

QA Engineer

Foster City, CA · On-site

Familiarity with Kubernetes, Docker, Java, Kotlin Masters degree in computer science or related ... Voluntary & AD&D) Paid Time Off (Vacation, Sick & Public Holidays) Training & Development ...

Vertex Sigma Software

QA Engineer

Foster City, CA

Familiarity with Kubernetes, Docker, Java, Kotlin Masters degree in computer science or related ... Voluntary & AD&D) Paid Time Off (Vacation, Sick & Public Holidays) Training & Development ...

Vertex Sigma Software

QA Engineer

Foster City, CA · On-site

Familiarity with Kubernetes, Docker, Java, Kotlin Masters degree in computer science or related ... Voluntary & AD&D) Paid Time Off (Vacation, Sick & Public Holidays) Training & Development ...

Glean

Software Engineer, Fullstack

San Francisco, CA · Hybrid

$140K - $265K/yr

Comfortable in or desire to master Golang, Java and TypeScript Location * This role is hybrid (3 ... EEO and Voluntary Self-Identification Voluntary Self-Identification: For government reporting ...

Fivetran

Staff Site Reliability Engineer

Oakland, CA · On-site

$196K - $245K/yr

Bonus if you have Java, GO, etc * Expertise with Linux operating systems, internals, and ... volunteer days off * RSU stock grants* * Professional development and training opportunities

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Java Developer Volunteer information

See Fremont, CA salary details

$17

$62

$84

How much do java developer volunteer jobs pay per hour?

As of Jul 14, 2026, the average hourly pay for java developer volunteer in Fremont, CA is $62.06, according to ZipRecruiter salary data. Most workers in this role earn between $53.70 and $69.47 per hour, depending on experience, location, and employer.

What types of projects or tasks can I expect to work on as a Java Developer Volunteer?

As a Java Developer Volunteer, you might work on a range of projects, such as developing new software features, fixing bugs, writing unit tests, or helping maintain existing Java applications for nonprofits or community organizations. You could also assist in documentation, code reviews, or collaborating on open-source initiatives, depending on the organization's needs. These roles often provide exposure to agile development practices and teamwork with other engineers, designers, and project managers. Volunteering in this capacity not only helps worthwhile causes but also allows you to expand your portfolio and gain practical experience with real-world applications.

What are the key skills and qualifications needed to thrive in the Java Developer Volunteer position, and why are they important?

To excel as a Java Developer Volunteer, you should have a solid grasp of Java programming, object-oriented design, and version control systems, often demonstrated through coursework, certifications, or hands-on project experience. Familiarity with tools like Eclipse or IntelliJ IDEA, build systems (Maven or Gradle), and collaborative platforms such as GitHub is commonly expected. Strong communication, teamwork, and a willingness to learn set exceptional volunteers apart. These skills and qualities ensure you can contribute effectively to projects, adapt to dynamic team needs, and make the most meaningful impact in volunteer settings.

What is a Java Developer Volunteer job?

A Java Developer Volunteer role involves contributing to software development projects without financial compensation. Volunteers typically assist in coding, debugging, testing, and maintaining Java-based applications for nonprofits, open-source projects, or startups. This role helps developers gain experience, build portfolios, and support meaningful initiatives while collaborating with teams.

What are the most commonly searched types of Java Developer jobs in Fremont, CA? The most popular types of Java Developer jobs in Fremont, CA are:
What are popular job titles related to Java Developer Volunteer jobs in Fremont, CA? For Java Developer Volunteer jobs in Fremont, CA, the most frequently searched job titles are:
What cities near Fremont, CA are hiring for Java Developer Volunteer jobs? Cities near Fremont, CA with the most Java Developer Volunteer job openings:
Java Developer Volunteer jobs near you
Infographic showing various Java Developer Volunteer job openings in Fremont, CA as of July 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $129,095 per year, or $62.1 per hour.

Senior Backend Engineer

ATOMS Careers page

Mountain View, CA • On-site

$176K - $242K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 2 days ago

Job description

Who we are
Picnic is reinventing meals at work. We partner with top local restaurants and deliver lunches to companies from 20 to more than 10,000 employees. This allows us to deliver high-quality, individually packaged meals without fees or tips. The result is a joyful experience for employees, teams, and entire organizations. Companies can design their employee food offerings, ranging from simple lunches to sophisticated meal programs. We are obsessing about each company, each customer, each restaurant, and each individual order. Picnic creates a more sustainable model for restaurants, helping local heroes to succeed.
Picnic's early business signals have been exceptionally strong. It has been adopted organically by companies from Banking to Manufacturing, from Tech to Government. Customers are discovering and advocating for the product before any marketing
Picnic owns the full stack that powers workplace food delivery: client applications for employees, company managers, kitchen operations, and courier operations. AI-powered services are tying them together. This vertical ownership allows us to tightly integrate ordering, logistics, and operations to deliver reliable, cost-efficient services at scale. We are solving one of the most comprehensive, and therefore complex, meal delivery problems. We need YOU to help us build it at scale!
About the roleWe're looking for a Senior Backend Engineer to help architect and scale Picnic's real-time food ordering and operations platforms. This is a high-impact role for someone who enjoys ambiguity, thrives in complex systems, and is excited to iterate and improve real-world operations.
You'll work across backend services that support web and mobile surfaces, partner closely with frontend, mobile, product, and operations teams, and help define how we design, build, and scale backend systems at Picnic.
What you'll do
  • Write high-quality, well-tested code in languages like Java and Go, set a strong bar for engineering excellence, and manage and sustain a full software lifecycle
  • Lead backend initiatives ensuring scalability and reliability across domains such as food ordering, payments, discounts, and loyalty
  • Drive the development with a strong focus on reliability-by-design, observability, and testability
  • Design scalable databases, analyze data using SQL
  • Mentor and uplevel engineers through technical leadership, reviews, and hands-on collaboration

What we're looking for
  • Proficiency in backend programming languages Java and Go
  • Experience with relational and/or NoSQL databases (e.g., PostgreSQL, MongoDB, Redis)
  • Experience with cloud platforms like AWS, Google Cloud, or Azure
  • Understanding of RESTful APIs, microservices, and distributed systems
  • A high-performance, hands-on engineer who sets a high bar for code quality, reliability, and operational excellence
  • Deep understanding of backend system design, APIs, data stores, concurrency, and distributed systems
  • Experience collaborating closely with frontend, mobile, product, data, and business partners
  • Passion for product impact and building systems that directly support customers and operators

Preferred Qualifications
  • Experience building web or mobile applications. Familiarity with frontend and mobile tradeoffs and how backend decisions affect client performance
  • Experience with containerization technologies like Docker and Kubernetes
  • Knowledge of CI/CD pipelines and DevOps practices
  • Track record of improving developer productivity through tooling, patterns, or process improvements

Why join us
  • Massive market opportunity: Online food delivery continues to grow rapidly, creating room for durable, category-defining companies
  • Real impact: You'll help reshape how restaurants succeed in delivery while improving everyday experiences for thousands of workers
  • Ownership and influence: Customer ordering experience is the face to Picnic's operations
  • Strong engineering culture: You'll collaborate closely with experienced engineers and leaders who care deeply about craft, impact, and growth

What else you need to know
This role is based in our Mountain View office. We believe the best ideas emerge from close collaboration, especially when building new products and redefining how an industry works. As a result, Picnic requires in-office five days a week for all non-field roles.
The base salary range for this role is $176,000 - 242,000 per year.
Actual compensation will be determined on an individual basis and may vary depending on experience, skills, and qualifications.
Base salary is just one part of your total rewards package. You may also be eligible for equity awards and an annual performance-based bonus.
Benefits Summary (USA Full-Time Exempt Employees):
  • Medical, dental, and vision insurance (multiple plans, incl. HSA options)
  • Company-paid life and disability insurance (short- and long-term)
  • Voluntary insurance: accident, critical illness, hospital indemnity
  • Optional supplemental life insurance for self, spouse, and children
  • Pet insurance discount
  • 401(k)
  • Health Savings Account (HSA)
  • Flexible Spending Accounts (Healthcare, Dependent Care, Commuter)
  • Time Off policies:
    • Discretionary vacation days
    • 8 paid holidays per year
    • Paid sick time
    • Paid Bereavement leave
    • Paid Parental Leave

Benefits are subject to change at the company's discretion.
Atoms accepts applications on an ongoing basis.
Ready to join us as we serve those who serve others?
#LI-Onsite

Apply