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Freelance Integration Software Engineer Jobs (NOW HIRING)

Limble

Software Engineer III - Integrations

$106K - $143K/yr

Required : • 6+ years of integration software development experience • Demonstrated track ... engineers Preferred : • Familiarity with CI/CD pipelines and infrastructure-as-code • ...

New

ECS

Junior Software Engineer

Fairfax, VA · On-site

The Junior Software Engineer contributes to WDP Core Integration software development by implementing assigned features, fixes, and configuration updates across development, test, integration, and ...

asrcfh

Software Integration & Test Engineer

Moorestown, NJ

$102K - $138K/yr

The Software Integration & Test Engineer supports system-level software integration within a laboratory environment. This role executes requirement-driven manual and automated integration testing ...

asrcfh

Software Integration & Test Engineer

Moorestown, NJ

$102K - $138K/yr

The Software Integration & Test Engineer supports system-level software integration within a laboratory environment. This role executes requirement-driven manual and automated integration testing ...

Limble

Software Engineer III - Integrations

$106K - $143K/yr

Required : • 6+ years of integration software development experience • Demonstrated track ... engineers Preferred : • Familiarity with CI/CD pipelines and infrastructure-as-code • ...

New

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All JobsFreelance Integration Software Engineer Jobs

Freelance Integration Software Engineer information

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$44.5K

$124.3K

$173.5K

How much do freelance integration software engineer jobs pay per year?

As of Jun 20, 2026, the average yearly pay for freelance integration software engineer in the United States is $124,275.00, according to ZipRecruiter salary data. Most workers in this role earn between $104,000.00 and $140,000.00 per year, depending on experience, location, and employer.

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, and why are they important?

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.
More about Freelance Integration Software Engineer jobs
What cities are hiring for Freelance Integration Software Engineer jobs? Cities with the most Freelance Integration Software Engineer job openings:
What are the most commonly searched types of Integration Software Engineer jobs? The most popular types of Integration Software Engineer jobs are:
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Freelance Integration Software Engineer jobs near you
Infographic showing various Freelance Integration Software Engineer job openings in the United States as of June 2026, with employment types broken down into 95% Full Time, 2% Part Time, and 3% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $124,275 per year, or $59.7 per hour.
Integration Software Engineer

Integration Software Engineer

Integrated Resources INC

Rochester, NY

$102K - $138K/yr

Contractor

Posted 23 days ago

Job description

Company Description

A Few Words About Us Integrated Resources, Inc is a premier staffing firm recognized as one of the tri-states most well-respected professional specialty firms. IRI has built its reputation on excellent service and integrity since its inception in 1996. Our mission centers on delivering only the best quality talent, the first time and every time. We provide quality resources in four specialty areas: Information Technology (IT), Clinical Research, Rehabilitation Therapy and Nursing.

Job Description

Job Description:

Generally requires (2-4) years related experience 

Member of software integration team. Will write and execute test procedures for medical device. 

Will perform black and white box testing. Must have experience working in a regulated environment on a medical instrument. Must have experience using a scripting language.


Additional Information

Regards,

Sweta Verma

IT Recruiter

Integrated Resources, Inc.

Inc. 5000 - 2007-2014 (8th Year)

Certified MBE I GSA - Schedule 66 I GSA - Schedule 621I I GSA - Schedule 70

(Direct) 732 549 5907 | (W) 732 -549 - 2030 x 210| (F) (732) 549 5549





Integrated Resources logo

About Integrated Resources

Sourced by ZipRecruiter

Integrated Resources Inc (IRI), based in Edison, NJ, US, is an esteemed player in the staffing solutions industry with a credible presence on their official website irionline.com. Notably, IRI provides a range of professional staffing services including contract, contract-to-hire, and direct hire solutions to a wide spectrum of industries such as healthcare, life sciences, manufacturing, financial, insurance, and others. Since its inception, IRI has been committed to delivering top-talent and optimum solutions to meet its clients' diverse needs.

Industry

Recruiting and staffing services

Company size

51 - 200 Employees

Headquarters location

Edison, NJ, US

Year founded

1996

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