6 professional services jobs found in Tustin, CA

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Oct 20, 2026
Full time
Contract Administrator Senior
$101,275 - $139,339 yearly
Orange County Transportation Authority Orange, CA
Job Description Senior Contract Administrator – Capital Projects Under general direction, manages complex procurement and contract administration activities supporting OCTA's major capital improvement projects and transportation programs. This position plays a key role in delivering high-profile infrastructure projects by coordinating competitive procurements, administering contracts, and ensuring compliance with applicable policies, procedures, and funding requirements. This is an exempt position in salary grade 205: Min – $101,275.20 | Mid – $120,307.20 | Max – $139,339.20/annually.  The starting salary will be within this range based on qualifications. This posting will remain open until a candidate is selected. What You’ll Do Manage complex procurements and contract administration activities for major transportation and capital improvement projects. Develop and administer requests for proposals, invitations for bids, cooperative agreements, and other...
Oct 02, 2026
Full time
Manager Procurement
L3Harris Anaheim, CA
L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. Job Title: Manager, Procurement   Job Location: Camden NJ, Millersville MD, Northampton MA, Herndon VA, or Anaheim CA (On-Site) Job Schedule : 9/80 Job Description:  The Manger of Procurement is responsible for all aspects of material...
Oct 23, 2026
Full time
Buyer II - Purchasing
$34.32 - $46.82 hourly
County of Riverside Riverside, CA
ABOUT THE POSITION The County of Riverside's University Health System - Medical Center department seeks a Buyer II to join their Purchasing team   in Riverside.   Under direction, the incumbent will be responsible for creating purchase orders, providing order status updates to departments, educating department staff on purchasing guidelines and protocols, assisting with vendor registrations, and collaborating with Accounts Payable to mitigate vendor payment issues as needed; purchasing or negotiating to purchase materials, supplies, equipment, and services for use by County agencies, departments, districts, and affiliates, and performs other related duties as required. The most competitive candidates will possess the following professional experience with: Peoplesoft Financials experience At least 2 years of experience in vendor relations and/or buying capacity, preferably for goods and services This position has a 9/80 schedule: M-F,...
Aug 24, 2026
Full time
Procurement Specialist
Yuhaaviatam of San Manuel Nation Highland, CA
ESSENTIAL DUTIES AND RESPONSIBILITIES 1. Reviews and processes purchase orders and requisitions for goods and services. Processes all procurement transactions in compliance with established laws, ordinances, policies and ethical principles. 2. Collaborates with internal departments to understand each department’s procurement needs and provide support.                                                                                                                  3. Sources and evaluates suppliers, negotiates pricing, and monitor supplier performance 4. Assist end users with the development of specifications to ensure product and service needs are well-defined and regularly used items are accurately and correctly maintained in Procure-to-Pay (P2P) system catalogs.   5. Identifies and realizes cost-saving and cost-reduction opportunities without compromising supply assurance or quality. 6. Arranges and conducts job walks, pre-bid or proposal conferences, vendor demonstrations...
Oct 23, 2026
Full time
Senior Associate, Procurement
L3Harris Anaheim, CA
L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. Job Title: Sr Assoc, Procurement Job Location: Anaheim, CA; Millersville, MD; Camden, NJ or Northampton, MA Job Schedule: 9/80   Job Description:   Maintain strategic alliances and partnerships that have already been established by the...
Oct 20, 2026
Full time
Specialist Procurement (Material Estimator)
L3Harris Anaheim, CA
L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. Job Title: Specialist, Procurement (Material Estimator) Job Location: Anaheim, CA Job Schedule: 9/80   Job Description:   The Material Estimator will work and is responsible for accurately compiling the complete cost of materials...