Senior MuleSoft Integration Developer

Location: Irvine, CA (Hybrid, 3 days/week onsite from Day 1) | Contract-to-Hire

This role requires 3 days/week onsite in Irvine, CA from Day 1, with no exceptions. Candidates must be interested in converting to a full-time position. Overview Our client is seeking a Senior MuleSoft Integration Developer to design, develop, and implement integration solutions that connect systems and applications, optimizing business processes and overall efficiency. You'll lead the design and implementation of integration workflows, manage middleware platforms, and ensure seamless data flow across disparate systems, working with platforms such as MuleSoft, Informatica, and other cloud technologies to deliver high-performing, scalable solutions.

Responsibilities

• Design, develop, and implement integration solutions using iPaaS vendors and a variety of enterprise cloud and on-premises systems.
• Oversee the full API lifecycle, from designing and developing RESTful APIs to testing, monitoring, and optimizing for performance and scalability.
• Create reusable API assets and connectors to accelerate development and future-proof integration solutions.
• Work with third-party vendors and integration partners to evaluate solutions, manage implementation, and integrate external systems into the organization's architecture.
• Monitor integration performance and health, troubleshoot issues, and optimize integration processes across systems.
• Collaborate with business analysts and architects to define technical requirements and design integration architectures aligned with business needs.
• Mentor IT peers on integration best practices and coding standards.
• Develop and maintain technical documentation, including integration specifications, data flow diagrams, and support guides, and ensure adherence to coding standards.
• Stay current with emerging technologies and drive improvements aligned with industry standards.

Required Qualifications

• Bachelor's degree in Computer Science, Information Technology, or a related field
• 5-8 years of experience in integration development, with a focus on enterprise systems and APIs
• Proficiency in programming languages such as Java, C#, Python, or JavaScript
• Extensive hands-on experience with the MuleSoft Anypoint Platform, including API design, development, and deployment
• Experience with the MuleSoft product suite: CloudHub 2.0, API-led connectivity, API Manager, Partner Manager, and MuleSoft administration
• In-depth knowledge of event-driven architecture, including Pub/Sub patterns and message queues (e.g., RabbitMQ, Kafka)
• Strong proficiency in web services (REST, SOAP) and data formats such as XML and JSON
• Familiarity with API management and API security best practices (OAuth, JWT) within MuleSoft integrations
• Good understanding of EDI standards (ANSI X12, EDIFACT) and integration protocols (AS2, SFTP, FTPS)
• Experience with version control systems (GitHub, Bitbucket)
• Proficiency with databases and data integration, including data mapping, transformation, and queries
• Strong analytical, communication, and prioritization skills in a fast-paced environment

Preferred Qualifications

• Exposure to cloud integration platforms such as AWS, Azure, or Google Cloud
• Certifications in integration technologies such as MuleSoft, AWS, or Azure
• Experience integrating manufacturing systems such as ERP, PLM, SCADA, and IoT applications

Pay rate: $80-85/hr. This is a 6-month contract-to-hire position, hybrid (3 days/week onsite) in Irvine, CA. Candidates must be US Citizens, Green Card holders, or authorized to work on H1B, H4 EAD, L2 EAD, TN, or E3 visa.

About Us Peterson Technology Partners (PTP) is an Equal Opportunity Employer committed to creating a transparent, inclusive, and human-centered hiring experience.

For more than 28 years, PTP has operated as one of the top IT staffing and recruiting firms in the USA—built on trust, long-term partnerships, and technical excellence.

Based in the Chicago suburb of Park Ridge, IL, our team of more than 500 employees and consultants is dedicated to:

• Helping every client make the best hiring decisions possible
• Matching professionals with the right IT jobs and career opportunities

As part of that commitment, we believe in providing clear information about how our hiring technologies work and how your data is used. The following section outlines our AI-assisted interview process and your rights as a candidate.

AI-Assisted Interview Experience (Pete & Gabi – Rebecca):

To provide a consistent, fair, and flexible experience for all candidates, we use AI-assisted tools to support parts of the interview process. This includes our proprietary AI platform Pete & Gabi, which includes AI recruiter Rebecca.

These AI hiring tools help us:

• Conduct recorded video interviews
• Transcribe interviews
• Summarize candidate responses
• Generate job-related insights
• Streamline communication and scheduling

Please note that:

• The AI does NOT make hiring decisions; all decisions are made by our human recruiters, hiring managers, or client partners.
• The AI does not evaluate facial expressions, emotions, or physical traits; it is used only to support fairness, consistency, and efficiency.

If you prefer a non-AI interview format, we will gladly provide an alternative.

Technical or Case Interviews (Role-Dependent): −

When applying for certain tech jobs, you may participate in:

• A technical interview
• A coding challenge
• A case study
• A client-specific assessment

We will always explain what to expect in advance so you can prepare with confidence.

Human Review & Selection: +

Every candidate’s profile—including interviews, conversations, and assessments—is reviewed by experienced recruiters and hiring leaders.

AI insights may assist with organization and evaluation, but final decisions are always human-driven.

Your Rights as a Candidate: +

At PTP, every candidate has the right to:

• Request a non-AI interview path
• Ask how your data is being used
• Request access to transcripts or interview recordings
• Request deletion of your AI-recorded interview
• Receive clear, timely communication

Our goal is to ensure you feel respected, informed, and supported throughout your experience.

Our Commitment: +

For more than 28 years, PTP has focused on putting people first—candidates, consultants, employees, and clients.

We’re committed to a hiring process that is:

• Transparent
• Compliant
• Equitable
• Powered by innovative technology that enhances—not replaces—human judgment

Welcome to the future of hiring at Peterson Technology Partners.

We’re excited to learn more about you.

Equal Employment Opportunity: +

Peterson Technology Partners is an Equal Opportunity Employer. All qualified applicants will receive consideration without regard to race, color, religion, national origin, gender identity, sexual orientation, disability, veteran status, or any other protected characteristic.