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Freelance Integration Software Engineer Jobs in California

Sr Software Engineer

Glendale, CA · On-site

$135K - $181K/yr

Job Posting Title: Sr Software Engineer Req ID: 10149383 At Disney "We Power the Magic!" That's our ... This role will be instrumental in shaping the architecture, integration, and delivery of next ...

Software Integration Engineer, CoreOS

San Francisco, CA · On-site

$122K - $164K/yr

As a CoreOS Software Integration Engineer, you'll help take the integration process for the low-level components of iOS, macOS, watchOS, tvOS, and visionOS to the next level, exploring new approaches ...

Showing results 21-40

Freelance Integration Software Engineer information

What is the difference between Freelance Integration Software Engineer vs Freelance Software Developer?

AspectFreelance Integration Software EngineerFreelance Software Developer
Primary FocusDesigning and implementing system integrations and APIsDeveloping standalone applications or features
Required SkillsAPI development, system architecture, integration toolsProgramming languages, application development, UI/UX
Work EnvironmentClient sites, remote, collaborative with IT teamsRemote, independent, project-based
Common CertificationsAPI certifications, cloud platform credentialsProgramming language certifications, software development courses

Freelance Integration Software Engineers focus on connecting different systems and APIs, often working closely with IT teams. Freelance Software Developers create standalone applications or features. While both roles require programming skills, integration engineers emphasize system interoperability, whereas developers focus on application creation.

What are some common challenges a freelance integration software engineer might face when working with multiple clients?

Freelance Integration Software Engineers often encounter challenges such as managing different client expectations, working with diverse technology stacks, and aligning integration standards across various systems. Since each client may use unique tools and workflows, adaptability and strong communication skills are essential to ensure seamless integration. Additionally, coordinating with remote development teams and adhering to project timelines can be demanding, but these experiences also help build a versatile skill set and professional reputation.

What is a freelance integration software engineer?

A Freelance Integration Software Engineer is an independent professional who specializes in connecting and combining different software systems so they can work together seamlessly. They are typically hired on a project basis to develop, implement, and maintain integrations between applications, databases, APIs, and other digital services. These engineers ensure data flows smoothly across platforms, streamline business processes, and resolve compatibility issues. Freelancers in this role often work remotely and serve multiple clients across industries.

What are the key skills and qualifications needed to thrive as a freelance integration software engineer?

To thrive as a Freelance Integration Software Engineer, you need strong programming skills (often in languages like Java, Python, or JavaScript), experience with APIs, and a solid understanding of system integration concepts, typically backed by a degree in computer science or related field. Familiarity with integration platforms (such as MuleSoft, Dell Boomi, or Zapier), cloud services, and relevant certifications (like MuleSoft Certified Developer or AWS Certified Solutions Architect) is highly valuable. Excellent problem-solving, communication, and time-management skills help you collaborate with clients and efficiently deliver solutions in a freelance environment. These capabilities are essential to ensure seamless connectivity between systems, deliver high-quality client solutions, and manage projects independently.
What are the most commonly searched types of Integration Software Engineer jobs in California? The most popular types of Integration Software Engineer jobs in California are:
What job categories do people searching Freelance Integration Software Engineer jobs in California look for? The top searched job categories for Freelance Integration Software Engineer jobs in California are:
Infographic showing various Freelance Integration Software Engineer job openings in California as of August 2026, with employment types broken down into 50% Full Time, and 50% Contract. Highlights an 75% In-person, and 25% Remote job distribution.

Software Integration Engineer

The Pennsylvania State University

San Diego, CA • On-site, Remote

$110K - $148K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 13 days ago


Job description

APPLICATION INSTRUCTIONS:
  • CURRENT PENN STATE EMPLOYEE (faculty, staff, technical service, or student), please login to Workday to complete the internal application process. Please do not apply here, apply internally through Workday.
  • CURRENT PENN STATE STUDENT (not employed previously at the university) and seeking employment with Penn State, please login to Workday to complete the student application process. Please do not apply here, apply internally through Workday.
  • If you are NOT a current employee or student, please click "Apply" and complete the application process for external applicants.

Approval of remote and hybrid work is not guaranteed regardless of work location.For additional information on remote work at Penn State, seeNotice to Out of State Applicants.

POSITION SPECIFICS

We are searching for an experienced Software Integration Engineer to join the Joint Mission Integration and Experimentation Division at the Applied Research Laboratory (ARL) at Penn State. This position supports the Joint Fires Network (JFN), Distributed Experimentation Environment (DE2) and Vanguard Force DevOps Environment (VFDE). These OUSD R&E, DARPA and TRMC initiatives are designed to leverage Live, Virtual and Constructive (LVC) experimentation in developing advanced warfighter architectures and CONOPS and link sensors and weapons platforms in times of critical conflict around the globe.

ARL is an authorized DoD SkillBridge partner and welcomes all transitioning military members to apply.

You will:

  • Ensure the maximum availability, stability and health of required program resources below to support operations, experimentation, development and testing
  • JFN: MLS operational architecture including nodes, hub, network, software baseline and CI/CD apparatus (e.g. IL-5 up to IL-7 Cloud
  • Develop and maintain automated reporting mechanism using commercial or customer dashboards for reporting overall system health and status
  • Provide software sustainment leveraging software configuration management controls and processes
  • Establish and improve existing engineering processes and tools to provide system status by leveraging Platform/Applications/Data monitoring tools
  • Contribute to the design and development of automating the daily verification and validation of key functional capabilities
  • Support the automation of configuration management and the visibility into the status of CM across various environments
  • Implement and promote systems engineering principles to ensure program success
  • Work closely with cross-functional teams to ensure reliability of the system
  • Prepare detailed reports and presentations on findings and share insights with stakeholders
  • Stay updated with the latest trends, technologies, and advancements in automated testing, distributed databases, software defined networking, container orchestration, and DevSecOps
  • Identify, investigate and document system deficiencies to support Technical Operations

Required skills/experience areas include:

  • Experience in Computer Science, Networking and Information Technology, including Software Engineering, Systems Engineering, DevSecOps, and application lifecycle management
  • Automation tools and techniques, including configuration management and system validation
  • System monitoring tools (Grafana, Prometheus, Splunk.)
  • Virtualization: VMware, vSphere, and Microsoft Hyper-V, Linux KVM
  • DevSecOps practices such as continuous integration and development tools (e.g. Jenkins, GitLab Runners.)
  • Kubernetes distros (RKE2, EKS, K8s, etc.)
  • Cloud platforms and services (e.g., AWS, Azure, GCP)
  • Configuration management tools (e.g., Ansible, Puppet, Terraform)
  • Knowledge of application integration testing and automated testing frameworks
  • Ability to lead cross-functional teams and coordinate with application providers
  • Strong problem-solving and critical-thinking skills
  • Excellent communication and presentation abilities, with experience in reporting project status to leadership
  • Familiarity with modern IT frameworks and methodologies (e.g., Agile, ITIL)
  • U.S. Citizenship with an active Top-Secret clearance with SCI eligibility within 3 months.
  • IAT Level II certification.

Your working location will be fully on-site, located in San Diego. Questions related to flexible work should be directed to the hiring manager during the interview process.

This position will require periodic travel to remote locations in support of testing as part of a small team of researchers, engineers, and technologists.

MINIMUM EDUCATION, WORK EXPERIENCE & REQUIRED CERTIFICATIONS

Bachelor's Degree - Engineering or Science 2+ years of relevant experience Required Certifications: None

ARL's purpose is to research and develop innovative solutions to challenging scientific, engineering, and technology problems in support of the Navy, the Department of Defense (DoD), and the Intel Community (IC).

FOR FURTHER INFORMATION on ARL, visit our web site at www.arl.psu.edu.

BACKGROUND CHECKS/CLEARANCES

Employment with the University will require successful completion of background check(s) in accordance with University policies.Notice regarding employment at the Applied Research Laboratory (ARL): Employees must be eligible to obtain a government security clearance, participate in the ARL drug testing program, and comply with electronic and physical monitoring requirements applicable to federal contractors. ARL operates in a secure information environment involving Unclassified, Controlled Unclassified Information (CUI), and Classified information. Personal electronic devices brought onsite must be registered and may be restricted from certain areas. You must be a U.S. citizen to apply.

SALARY & BENEFITS

The salary range for this position, including all possible grades, is $105,900.00 - $174,708.00.

Salary Structure - Information on Penn State's salary structure

Penn State provides a competitive benefits package for full-time employees designed to support both personal and professional well-being. In addition to comprehensive medical, dental, and vision coverage, employees enjoy robust retirement plans and substantial paid time off which includes holidays, vacation and sick time. One of the standout benefits is the generous 75% tuition discount, available to employees as well as eligible spouses and children. For more detailed information, please visit our Benefits Page.

CAMPUS SECURITY CRIME STATISTICS

Pursuant to the Jeanne Clery Disclosure of Campus Security Policy and Campus Crime Statistics Act and the Pennsylvania Act of 1988, Penn State publishes a combined Annual Security and Annual Fire Safety Report (ASR). The ASR includes crime statistics and institutional policies concerning campus security, such as those concerning alcohol and drug use, crime prevention, the reporting of crimes, sexual assault, and other matters. The ASR is available for review here.

EEO IS THE LAW

Penn State is an equal opportunity employer and is committed to providing employment opportunities to all qualified applicants without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. If you are unable to use our online application process due to an impairment or disability, please contact 814-865-1473.

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About Pennsylvania State University

Sourced by ZipRecruiter

Pennsylvania State University, often referred to as Penn State, is a major, public, research-intensive university located in University Park, PA, US. This esteemed institution serves as an important player within the education industry, offering a plethora of academic programs across various disciplines. The university was founded in 1855 with the mission to provide quality education, advanced research, and service to society. Penn State holds firmly to values of integrity, respect, and excellence, fostering a diverse and inclusive community. The university is renowned for its research productivity and its high-ranking programs in areas like engineering, business, and education. One notable achievement of the institution is its designation as a "R1: Doctoral Universities – Very high research activity," demonstrating its commitment to scholarship and discovery.

Industry

Education

Company size

11 - 50 Employees

Headquarters location

University Park, PA, US

Year founded

1855

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