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Senior Java Jobs in California (NOW HIRING)

Senior Software Engineer /Lead with hands on JAVA development with REST API Senior developer with experience development of highly scalable, low latency application and good in data structures, Java ...

Company Description Intelliswift Software, Inc Senior Software Engineer with Distributed computing, Java, EC2, Hadoop, Cassandra experience. Senior developer with experience development of highly ...

Sr.Java Developer

Sunnyvale, CA · On-site

$67.25 - $85.75/hr

Title: Sr. Java Engineer Duration: 12 months+ Location: Sunnyvale, CA: local to CA candidates only; relocation won't work, per client. * We need passport number,Visa and DL copy for submission * USC ...

Sr Java Developer

Torrance, CA · On-site

$59.75 - $76.25/hr

Torrance CA 90501 Duration: 12+ Months to 5 Years(ongoing project) Job Title: Sr. Java Developer (5688) if you are interested please forward your updated resume, pay expectations along with best ph ...

Company Description Intelliswift Software, Inc Senior Software Engineer with Distributed computing, Java, EC2, Hadoop, Cassandra experience. Senior developer with experience development of highly ...

Company Description Intelliswift Software, Inc Senior Software Engineer with Distributed computing, Java, EC2, Hadoop, Cassandra experience Senior developer with experience development of highly ...

Company Description Intelliswift Software, Inc Senior Software Engineer with Distributed computing, Java, EC2, Hadoop, Cassandra experience. Senior developer with experience development of highly ...

Sr.Java Developer

Sunnyvale, CA · On-site

$67.25 - $85.75/hr

Title: Sr. Java Engineer Duration: 12 months+ Location: Sunnyvale, CA: local to CA candidates only; relocation won't work, per client. * We need passport number,Visa and DL copy for submission * USC ...

Senior Java Developer

Rancho Cordova, CA · On-site

$61 - $77.75/hr

Senior Java Developer Location: Rancho Cordova, CA (candidates must be local enough for on-site interviews) Duration: Long-term contract or contract-to-hire Interviews - Technical phone interview to ...

Sr. Java Backend Engineer

Pleasanton, CA · On-site

$133K - $173K/yr

Only W2 profiles Sr. Java Backend Engineer Location: Pleasanton, CA (Onsite)- local to Bay area Required Skills: * 8+ years of experience in backend development using Java . * Strong hands-on ...

Senior Java Developer

Rancho Cordova, CA

$61 - $77.75/hr

Senior Java Developer Location: Rancho Cordova, CA (candidates must be local enough for on-site interviews) Duration: Long-term contract or contract-to-hire Interviews - Technical phone interview to ...

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Showing results 1-20

Senior Java information

What does a Senior Java Developer do?

A Senior Java Developer is responsible for designing, developing, and maintaining complex Java-based applications. They often lead development teams, make architectural decisions, and ensure code quality through best practices. Their role also includes mentoring junior developers, participating in code reviews, and collaborating with stakeholders to deliver robust software solutions. Senior Java Developers are expected to have extensive experience with Java frameworks, databases, and deployment processes.

What is the difference between Senior Java vs Java Developer?

AspectSenior JavaJava Developer
Required CredentialsBachelor's degree, extensive Java experience, possibly certifications like Oracle Certified ProfessionalBachelor's degree, Java knowledge, entry to mid-level certifications
Work EnvironmentTeam lead, project architect, involved in design and mentoringDevelopment team member, coding, testing, and implementation
Employer & Industry UsageTech companies, finance, healthcare, enterprise solutionsStartups, tech firms, software agencies, enterprise sectors

Senior Java professionals typically have more experience, leadership responsibilities, and advanced certifications compared to Java Developers. They often lead projects and mentor junior staff, while Java Developers focus on coding and implementation. Both roles are vital in software development, but the senior position involves greater strategic input and oversight.

What are the key skills and qualifications needed to thrive as a Senior Java Developer, and why are they important?

To thrive as a Senior Java Developer, you need deep expertise in Java programming, object-oriented design, and a strong grasp of software development principles, typically backed by a computer science degree or relevant experience. Experience with tools like Spring Framework, Hibernate, Maven, Git, and proficiency in using integrated development environments (IDEs) such as IntelliJ IDEA or Eclipse is essential, and certifications like Oracle Certified Professional (OCP) can be beneficial. Outstanding problem-solving skills, effective communication, and the ability to mentor junior developers set top performers apart. These skills ensure the delivery of robust, maintainable code and foster high-performing teams capable of tackling complex projects.

How do Senior Java Developers typically collaborate with cross-functional teams on large-scale projects?

Senior Java Developers often work closely with product managers, QA engineers, UI/UX designers, and DevOps teams to ensure successful project delivery. They participate in architectural discussions, provide technical guidance, and help translate business requirements into scalable software solutions. Regular communication and agile ceremonies like sprint planning and code reviews are common, allowing them to align development efforts with overall business goals and quickly address challenges. This collaborative environment helps Senior Java Developers mentor junior team members and foster a culture of continuous improvement.
What are the most commonly searched types of Java jobs in California? The most popular types of Java jobs in California are:
What cities in California are hiring for Senior Java jobs? Cities in California with the most Senior Java job openings:
Infographic showing various Senior Java job openings in California as of July 2026, with employment types broken down into 1% Internship, 86% Full Time, 6% Part Time, 1% Temporary, and 6% Contract. Highlights an 83% Physical, 4% Hybrid, and 13% Remote job distribution.
Senior Java Engineer

Senior Java Engineer

Activision Blizzard, Inc.

Santa Monica, CA • On-site

$64.25 - $82/hr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 22 days ago


Activision Blizzard rating

8.9

Company rating: 8.9 out of 10

Based on 7 frontline employees who took The Breakroom Quiz

5th of 67 rated media


Job description

Job Title:Senior Java EngineerRequisition ID:R027697Job Description:

Job Title: Senior Java Engineer

Reporting To: Manager, Engineering

Department: Marketing Technology

Location: Santa Monica, Ca

Overview

The Senior Java Engineer is responsible for designing, building, and supporting high-quality backend services for Marketing Technology platforms. This role combines hands-on engineering with technical ownership of APIs, integrations, service reliability, and backend modernization initiatives.

Key responsibilities

  • Design, build, and maintain Java-based backend services and APIs used by web, mobile, and partner-facing experiences.

  • Translate business and integration requirements into scalable service implementations and clear technical documentation.

  • Develop REST and microservice-based solutions with strong attention to performance, resilience, and maintainability.

  • Troubleshoot issues across development and production environments and drive fixes for reliability and technical debt.

  • Contribute to code reviews, test automation, release readiness, and continuous improvement of engineering practices.

  • Partner with architects, product managers, and platform teams on integrations, service contracts, and backend roadmap work.

Qualifications

  • 5+ years of backend engineering experience with strong Java and Spring / Spring Boot expertise.

  • Experience building APIs, microservices, and integrations in cloud or distributed environments.

  • Solid understanding of relational data, testing, CI/CD, and containerized deployment patterns.

  • Ability to work independently on complex backend tasks while mentoring less experienced engineers when needed.

Our World

At Activision, we strive to create the most iconic brands in gaming and entertainment. We're driven by our mission to deliver unrivaled gaming experiences for the world to enjoy, together. We are home to some of the most beloved entertainment franchises including Call of Duty, Crash Bandicoot, Tony Hawk's Pro Skater, and Guitar Hero. As a leading worldwide developer, publisher and distributor of interactive entertainment and products, our "press start" is simple: delight hundreds of millions of players around the world with innovative, fun, thrilling, and engaging entertainment experiences.

We're not just looking back at our decades-long legacy; we're forging ahead to keep advancing gameplay with some of the most popular titles and sophisticated technology in the world. We have bold ambitions to create the most inclusive company as we know our success comes from the passionate, creative, and diverse teams within our organization.

We're in the business of delivering fun and unforgettable entertainment for our player community to enjoy. And our future opportunities have never been greater - this could be your opportunity to level up.

Ready to Activate Your Future?

The videogame industry and therefore our business is fast-paced and will continue to evolve. As such, the duties and responsibilities of this role may be changed as directed by the Company at any time to promote and support our business and relationships with industry partners.

We love hearing from anyone who is enthusiastic about changing the games industry. Not sure you meet all qualifications? Let us decide! Research shows that women and members of other under-represented groups tend to not apply to jobs when they think they may not meet every qualification, when, in fact, they often do! We are committed to creating a diverse and inclusive environment and strongly encourage you to apply.

We are committed to working with and providing reasonable assistance to individuals with physical and mental disabilities. If you are a disabled individual requiring an accommodation to apply for an open position, please email your request toaccomodations@activisionblizzard.com. General employment questions cannot be accepted or processed here. Thank you for your interest.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, gender identity, age, marital status, veteran status, or disability status, among other characteristics.

Rewards

We provide a suite of benefits that promote physical, emotional and financial well-being for 'Every World' - we've got our employees covered! Subject to eligibility requirements, the Company offers comprehensive benefits including:

  • Medical, dental, vision, health savings account or health reimbursement account, healthcare spending accounts, dependent care spending accounts, life and AD&D insurance, disability insurance;
  • 401(k) with Company match, tuition reimbursement, charitable donation matching;
  • Paid holidays and vacation, paid sick time, floating holidays, compassion and bereavement leaves, parental leave;
  • Mental health & wellbeing programs, fitness programs, free and discounted games, and a variety of other voluntary benefit programs like supplemental life & disability, legal service, ID protection, rental insurance, and others;
  • If the Company requires that you move geographic locations for the job, then you may also be eligible for relocation assistance.

Eligibility to participate in these benefits may vary for part time and temporary full-time employees and interns with the Company. You can learn more by visiting https://www.benefitsforeveryworld.com/.

In the U.S., the standard base pay range for this role is $102,800.00 - $190,204.00 Annual. These values reflect the expected base pay range of new hires across all U.S. locations. Ultimately, your specific range and offer will be based on several factors, including relevant experience, performance, and work location. Your Talent Professional can share this role's range details for your local geography during the hiring process. In addition to a competitive base pay, employees in this role may be eligible for incentive compensation. Incentive compensation is not guaranteed. While we strive to provide competitive offers to successful candidates, new hire compensation is negotiable.

What Activision Blizzard employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom


Activision Blizzard logo

About Activision Blizzard

Sourced by ZipRecruiter

Activision Blizzard, Inc. (NASDAQ: ATVI), is one of the world's largest and most successful interactive entertainment companies and is at the intersection of media, technology and entertainment. We are home to some of the most beloved entertainment franchises including Call of Duty®, World of Warcraft®, Overwatch®, Diablo®, Candy Crush™ and Bubble Witch™. Our combined entertainment network delights hundreds of millions of monthly active users in 196 countries, making us the largest gaming network on the planet!

Industry

Arts, entertainment, and recreation

Company size

5,001 - 10,000 Employees

Headquarters location

Santa Monica, CA, US

Year founded

2008

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