Assistant Project Manager Jobs in San Antonio, TX
Assistant Project Manager jobs in San Antonio are active across construction, defense contracting, and healthcare, with demand concentrated in the South Texas Medical Center corridor, the Pearl District, and the growing Westover Hills business area. Employers hiring right now include HDR, HEB, and TRC. Find a role that fits below and apply directly.
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About 4C2
At 4C2 Industrial, we believe people are the greatest asset of any company, and that our clients deserve the highest-quality workmanship and customer service we can offer.
About the Role
We’re seeking an Assistant Project Manager in San Antonio, TX to run industrial construction and maintenance projects from estimate to closeout. You’ll work with clients, plan and schedule the work, manage costs and lead crews and subcontractors across multiple trades.
Responsibilities
- Meet clients, walk sites, estimate jobs and write detailed proposals
- Plan schedules for labor, materials and equipment, and coordinate ordering
- Manage multiple projects and trades (mechanical, sheet metal, piping, millwright, insulation, etc.)
- Prepare, track and negotiate change orders with clients, subcontractors and vendors
- Manage subcontractors, submittals and shop drawings
- Track costs against budget, forecast expenses and assist with billing and invoice approvals
- Uphold 4C2 safety and quality standards, including site-specific safety plans
- Handle closeout: punch lists, as-builts, O&M manuals, final billing and warranty follow-up
- Maintain excellent client relationships
Qualifications
- Mechanical Engineer or 3+ years of process piping industrial construction project experience
- Able to read blueprints and construction documents, with a solid understanding of construction sequence
- Strong math, communication, organization and leadership skills
- Proficiency in Microsoft Office; AutoCAD, Procore, and SharePoint is a plus
- Willing to work overtime, nights, weekends and holidays as needed
- Valid driver’s license and a driving record that meets company policy
Work Environment
This is a safety-sensitive position. It involves driving between jobsites; exposure to noise, dust, weather and uneven surfaces; and working around heavy equipment, hazardous materials, heights and confined spaces. The role requires standing, climbing, lifting and staying alert for long periods.
Benefits
Medical, dental and vision insurance; company-paid life insurance; 401(k) match; PTO; wellness programs; education assistance; and optional supplemental coverage.
Pay: $65,000.00 - $85,000.00 per year
Benefits:
- 401(k)
- 401(k) matching
- Dental insurance
- Health insurance
- Life insurance
- Paid time off
- Retirement plan
- Vision insurance
Work Location: Hybrid remote in San Antonio, TX 78218
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Find JobsAssistant Project Manager Job Market in San Antonio
Who's Hiring
- HDR21
- HEB21
- TRC21
- FlintCo21
- Decor IQ21
Assistant Project Manager Jobs in San Antonio: Frequently Asked Questions
How do I get a assistant project manager job in San Antonio?
The strongest path into assistant project manager roles in San Antonio is through the construction, defense, and healthcare sectors, which dominate local hiring. Candidates with experience on government contracts, hospital expansions, or commercial build-outs have a real edge here. Targeting employers near Joint Base San Antonio, the South Texas Medical Center, and the downtown Riverwalk development corridor puts you in front of the city's most active hiring managers.
Which companies hire assistant project managers in San Antonio?
Companies currently hiring assistant project managers in San Antonio include HDR, HEB, and TRC, per current listings on Migrate Mate as of November 2026. San Antonio's market is shaped by a strong mix of large defense contractors, regional construction firms, and hospital systems, all of which maintain ongoing project management pipelines.
Are there remote assistant project manager jobs in San Antonio?
Yes, though assistant project manager roles are often on-site by nature given the coordination and site-presence demands of the work. About 33% of assistant project manager openings tied to San Antonio are remote or hybrid as of November 2026, with remote work most common in administrative, scheduling, and budget-tracking functions rather than field or construction-side roles.
How can I get a assistant project manager job in San Antonio with little or no experience?
The most realistic entry path in San Antonio is through construction or facilities management firms that hire project coordinators and administrative leads as a stepping stone. Employers tied to JBSA base support contracts and hospital construction around the South Texas Medical Center frequently bring on entry-level candidates for scheduling and documentation roles. A PMP-prep course or associate credential helps you stand out with employers who promote from within.
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