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Freelance Full Stack Java Developer Jobs in Mountain House, CA

Perfict

Sr. Full Stack Engineer

Dublin, CA · On-site

Perfict is a company looking for a Sr. Full Stack Engineer to rebuild legacy UI and develop backend ... Java, Spring Boot, Oracle • APIs: REST, OpenAPI • AI: GitHub Copilot • Cloud: Azure (primary ...

Match Point Solutions

Full stack engineers

Pleasanton, CA · Remote

$35 - $40/hr

MatchPoint Solutions is a fast-growing, young, energetic global IT-Engineering services company ... C++, Python, Java, Go, or Rust * Experience and interest in full-stack development (Backend or Data)

Intelliswift Software

Sr. Java Developer

Pleasanton, CA · On-site

$63.75 - $81.25/hr

Full stack developer with recent In-depth knowledge of Java, OO programming, and modern web applications built on distributed service architecture * 10+ years of software development experience * BS ...

Jobsbridge

Web Application Developer

Stockton, CA

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. Bachelor's degree in Computer science or equivalent, with minimum of 5-8 ...

Jobsbridge

DevOps (Windows)

Pleasanton, CA

$58.75 - $80.50/hr

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. 5 + years of hands on experience in Websphere 6.1 and later versions ...

Jobsbridge

DevOps (Windows)

Pleasanton, CA

$58.75 - $80.50/hr

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. 5 + years of hands on experience in Websphere 6.1 and later versions ...

Jobsbridge

Fullstack Java Developer

San Ramon, CA

$58.75 - $75.75/hr

Company Description Intelliswift Software, Inc Front end : Java script, html, CSS, any javascript libraries Should be good in java Back end : Oracle Responsive designing Someone good in app ...

Tata Consultancy Service Limited

Full Stack Engineer

Pleasanton, CA · On-site

$100K - $115K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Must Have Technical/Functional Skills • Strong hands-on experience in Full Stack Development • Expertise in Node.js and React.js for UI/Application development • Experience in developing and ...

New

Maxonic

Be Seen First

Full-stack Engineer (Angular/Spring boot/ Azure)

Dublin, CA · On-site

$180K - $200K/yr

  • Medical

  • Dental

  • Vision

  • PTO

Full-stack Engineer (Angular/Spring boot/ Azure) Job Type: Fulltime Job Location: Dublin, CA Work ... Microsoft Azure Developer Associate (AZ-204) certification or experience supporting retail business ...

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Freelance Full Stack Java Developer information

See Mountain House, CA salary details

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How much do freelance full stack java developer jobs pay per hour?

As of Aug 17, 2026, the average hourly pay for freelance full stack java developer in Mountain House, CA is $62.60, according to ZipRecruiter salary data. Most workers in this role earn between $54.42 and $70.24 per hour, depending on experience, location, and employer.

What is a freelance full stack Java developer?

A Freelance Full Stack Java Developer is an independent professional who specializes in both front-end and back-end development using Java technologies. They handle the complete software development process, including designing user interfaces, building server-side logic, and managing databases. Freelancers in this role often work on a contract basis for multiple clients, providing flexibility and a variety of projects. Their expertise typically includes frameworks like Spring Boot, JavaScript libraries, RESTful APIs, and cloud services.

What are the key skills and qualifications needed to thrive as a freelance full stack Java developer?

To thrive as a Freelance Full Stack Java Developer, you need expertise in Java programming, front-end technologies (such as HTML, CSS, JavaScript), and back-end frameworks, often supported by a relevant degree or proven experience. Familiarity with tools like Spring Boot, REST APIs, databases (SQL/NoSQL), version control systems (e.g., Git), and cloud platforms is typically required. Strong problem-solving skills, effective communication, and self-motivation set top freelancers apart by enabling them to manage projects independently and collaborate with clients. These skills ensure the delivery of robust, scalable applications and client satisfaction in a competitive freelance market.

What are the most common challenges faced by freelance full stack Java developers when managing multiple client projects simultaneously?

Freelance full stack Java developers often juggle several client projects at once, which can pose challenges in terms of time management, communication, and prioritization. Balancing diverse client expectations, aligning project timelines, and handling unexpected technical issues require strong organizational skills and proactive communication. Many freelancers use project management tools and set clear milestones with clients to stay on track. Additionally, it's important to regularly update clients on progress and clarify requirements early to prevent scope creep and last-minute changes.

What is the difference between Freelance Full Stack Java Developer vs Freelance Front End Developer?

AspectFreelance Full Stack Java DeveloperFreelance Front End Developer
Skills & CertificationsJava, Spring, REST APIs, JavaScript, HTML, CSSHTML, CSS, JavaScript, frameworks like React or Angular
Work EnvironmentBackend and frontend development, full project lifecyclePrimarily UI/UX design, client-side coding
Industry UsageEnterprise applications, web services, backend systemsWebsite interfaces, mobile app frontends

Freelance Full Stack Java Developers handle both backend and frontend tasks using Java and related technologies, while Freelance Front End Developers focus mainly on user interface design and client-side coding. Both roles are in demand, but the full stack developer offers a broader skill set suitable for end-to-end project delivery.

What are the most commonly searched types of Full Stack Java Developer jobs in Mountain House, CA?

The most popular types of Full Stack Java Developer jobs in Mountain House, CA are:

What are popular job titles related to Freelance Full Stack Java Developer jobs in Mountain House, CA?

For Freelance Full Stack Java Developer jobs in Mountain House, CA, the most frequently searched job titles are:

What job categories do people searching Freelance Full Stack Java Developer jobs in Mountain House, CA look for?

The top searched job categories for Freelance Full Stack Java Developer jobs in Mountain House, CA are:

Freelance Full Stack Java Developer jobs near you
Infographic showing various Freelance Full Stack Java Developer job openings in Mountain House, CA as of June 2026, with employment types broken down into 10% As Needed, 79% Full Time, 2% Part Time, 6% Temporary, 1% Contract, and 2% Nights. Highlights an 77% Physical, 2% Hybrid, and 21% Remote job distribution, with an average salary of $130,217 per year, or $62.6 per hour.

Sr. Full Stack Engineer

Perfict

Dublin, CA • On-site

Full-time

Re-posted 18 days ago

Job description

Job Summary:
Perfict is a company looking for a Sr. Full Stack Engineer to rebuild legacy UI and develop backend services. The role involves designing REST APIs, collaborating with peers, and utilizing modern tools and technologies for full-stack delivery.
Responsibilities:
• Rebuild legacy UI from ADF into Angular using reverse‐engineered artifacts
• Develop backend services in Spring Boot from existing business logic and schemas
• Design and consume REST APIs aligned to OpenAPI contracts
• Work heavily with Oracle SQL and legacy data models
• Collaborate daily with frontend/backend peers for full‐stack delivery
• Use Copilot for code generation, refactoring, and acceleration
• Write unit, integration, and E2E tests (Jest, Playwright, backend testing)
• Participate in technical reviews and modernization decisions
• Strong Angular (modern versions; version number not important)
• Strong Java + Spring Boot
• Hands‐on Oracle SQL experience (non‐negotiable)
• Experience with legacy modernization / re‐platforming
• API design and REST/OpenAPI experience
• Comfortable working full stack (not siloed)
• Willingness to use AI‐assisted development (Copilot)
Qualifications:
Required:
• Rebuild legacy UI from ADF into Angular using reverse‐engineered artifacts
• Develop backend services in Spring Boot from existing business logic and schemas
• Design and consume REST APIs aligned to OpenAPI contracts
• Work heavily with Oracle SQL and legacy data models
• Collaborate daily with frontend/backend peers for full‐stack delivery
• Use Copilot for code generation, refactoring, and acceleration
• Write unit, integration, and E2E tests (Jest, Playwright, backend testing)
• Participate in technical reviews and modernization decisions
• Strong Angular (modern versions; version number not important)
• Strong Java + Spring Boot
• Hands‐on Oracle SQL experience (non‐negotiable)
• Experience with legacy modernization / re‐platforming
• API design and REST/OpenAPI experience
• Comfortable working full stack (not siloed)
• Willingness to use AI‐assisted development (Copilot)
• Frontend: Angular, Jest, Playwright
• Backend: Java, Spring Boot, Oracle
• APIs: REST, OpenAPI
• AI: GitHub Copilot
• Cloud: Azure (primary environment)
• Database: Oracle (on‐prem, legacy‐heavy)
• Oracle database experience
• Full‐stack mindset
• Senior‐level autonomy
Company:
Perfict Global is an IT consulting services provider, focused on providing innovative and successful business workforce solutions. Founded in 2011, the company is headquartered in Concord, USA, with a team of 51-200 employees. The company is currently Growth Stage.
Perfict logo

About Perfict

Sourced by ZipRecruiter

We are a technology company focused on providing innovative and successful business workforce solutions. Since 2011, Perfict has partnered with the biggest names across sectors offering a customized approach to each solution. We’ve established networks of genuine relationships that allow us to source the highest-quality talent and execute deals and hires quickly. With locations in US and India, we work globally to help you build your organization. Our methodology begins with listening to you about your needs. We work with your team to gain a clear understanding of your requirements, while providing a knowledge transfer of best practices.

Industry

Recruiting and staffing services

Company size

51 - 200 Employees

Headquarters location

Walnut Creek, CA, US

Year founded

2011

Social media

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