Project Assistant Jobs in San Antonio, TX
Project assistant jobs in San Antonio are concentrated in the South Texas Medical Center, downtown near the River Walk business corridor, and the growing tech and defense corridors along Loop 1604 and the Northwest Side, with strong demand across healthcare, defense contracting, and construction management. Employers hiring right now include HDR, FlintCo, and Decor IQ. See the openings below and apply to the ones that match your experience.
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This is an on-site role requiring relocation to project locations nationwide. Please note that the posted location may not reflect the assigned project site. If nationwide relocation isn't the right fit, we encourage you to explore other opportunities that better match your preferences.
Summary
The Assistant Project Manager assists in the planning, management, and execution of work for assigned construction projects. May be assigned one or more projects at a time. Manages projects to meet quality standards, owner expectations, and profitability. Assesses and responds to customer needs and cultivates customer relationships. Promotes Layton business philosophies and assists in training project personnel.
Duties
- Champions “The Layton Way” by delivering predictable outcomes for internal teams, external teams, and customers.
- Ensures that “Constructing with Integrity” is delivered by working with honesty, unity, safety, and quality of work.
- Assists in the preparation of estimates, project budgets and unit cost reports.
- Organizes and conducts pre-construction planning meetings.
- Participates in the successful negotiation of project subcontracts.
- Assists the project team in preparing the project management plan and planning the successful execution of the construction contract.
- Participates in value engineering services as appropriate.
- Obtains and reviews plans and specifications and determines their completeness and consistency.
- Assists the project owner in obtaining permits and participates in resolving other regulatory requirements as necessary.
- Assists in the preparation of project schedule and develops milestones necessary to successfully complete the project in concert with the Project Superintendent. Participates in project schedule updates as needed.
- Develops the monthly client pay requests and follows up on the collection of billings to ensure funds are collected as per the contract terms & in a timely manner.
- Controls the payment of job and subcontractor costs based on construction progress, document review and approval and coordinates with the job cost accountant for payments and lien releases.
- Participates in monthly job cost reviews to declare project status and increases project profitability and promotes Layton objectives and goals.
- Manages project material and equipment procurement within the project budget constraints and consistent with the project delivery schedule.
- Develops and monitors project quality, safety, and risk management plans.
- Negotiates owner and subcontractor change orders and manages the resulting schedule, cost, and profit impacts.
- Attends, directs as needed, and may take notes for project team meetings, including weekly Owner/Architect meetings and subcontractor and other coordination meetings.
- Coordinates all final close out procedures for the project including as-built drawing, punch lists, final billing, occupancy permit, owner acceptance, project manuals, warranty letters, subcontractor close out, letter of substantial completion, and letter of recommendation.
- Participates in the post completion project review and provides Preconstruction with information for their database.
- Trains and mentors project and field engineers and other team members as needed.
- Manages project engineers to assure project construction compliance through reviewing, submitting, and following up on submittals, Requests for Information, document revisions, and other documentation to avoid delays and additional risk to the project.
- Updates and implements software programs for collaboration, quality, and document management.
- Develops and maintains owner relationships. Performs other related duties as assigned.
Qualifications
- Bachelor’s degree in construction management or related field, or an equivalent combination of education and experience.
- 3+ years of experience in ground-up commercial construction projects.
- Demonstrates excellent communication skills by expressing ideas clearly and effectively and has strong negotiation skills.
- Understands construction laws and practices; applies building codes and other design requirements correctly and reads blueprints correctly.
- Maintains the Layton standard of ethics, conduct, and organizational policies.
- Excels in problem solving. Finds relationships between data from different sources to formulate alternative solutions.
- Works well with other people; takes time to help co-workers, customers, and others to achieve their goals and assignments.
- Knows how to plan an effective course of action for self and others. Knows how to allocate resources and assign personnel. Uses time efficiently and is well-organized.
- Knows how to manage events to achieve goals. Is a self-starter and works well without close supervision. Has a record of achieving aggressive goals.
- Professional affiliations (e.g. AGC member) and credentials (e.g. PE) preferred.
- Ability to speak basic Spanish commands, questions, and instructions regarding construction preferred. Strong computer and technical skills. Ability to learn new software programs quickly and apply them to processes.
Benefits: Layton Construction offers the following benefits for this position, subject to applicable eligibility requirements: Medical Insurance, Dental Insurance, Vision Insurance, Health Savings Account, Healthcare Flexible Spending Account, Dependent Care Flexible Spending Account, 401(k) retirement plan with employer match, Life & AD&D Insurance, Long-term Disability Insurance, Short-term Disability Insurance, Critical Illness Insurance, Accident Insurance, Hospital Indemnity Insurance, Home & Auto Insurance, Family Support, Pre-tax Paid Parking/Public Transportation, Paid time off, Time Away Benefits, Paid Holidays, Group Legal, Employee Stock Purchase Plan, Identity Theft Protection, Group Legal, Pet Insurance, Employee Assistance Program.
EEO Statement: Layton Construction an equal opportunity employer. We evaluate qualified employees and applicants for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, and other legally protected characteristics.
See All 318+ Project Assistant Jobs in San Antonio
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Find Project Assistant JobsProject Assistant Job Market in San Antonio
Who's Hiring
- HDR24

- FlintCo24

- Decor IQ24
- FISK ELECTRIC24
- Structura24
Project Assistant Jobs in San Antonio: Frequently Asked Questions
How do I get a project assistant job in San Antonio?
Focus your search on San Antonio's largest hiring sectors: healthcare systems around the South Texas Medical Center, defense and government contractors clustered near Joint Base San Antonio, and commercial construction firms expanding across the North Side and Stone Oak area. Candidates who can show experience with project scheduling tools, document control, or budget tracking stand out locally. Networking through San Antonio's active construction and healthcare communities also opens doors faster than applications alone.
Which companies hire project assistants in San Antonio?
Companies currently hiring project assistants in San Antonio include HDR, FlintCo, and Decor IQ, per current listings on Migrate Mate as of October 2026. San Antonio's hiring mix leans toward large healthcare systems, federal contractors, and regional construction and engineering firms, all of which maintain ongoing project support staff.
Are there remote project assistant jobs in San Antonio?
Yes, though availability depends on the role type: desk-based and administrative project assistant positions are more remote-friendly, while construction or on-site coordination roles are almost entirely in person. About 25% of project assistant openings tied to San Antonio are remote or hybrid as of October 2026. The most remote-compatible work tends to be in healthcare administration and technology project support.
How can I get a project assistant job in San Antonio with little or no experience?
The most realistic entry path in San Antonio is targeting administrative or coordinator roles at the city's large healthcare networks and defense contractors, which regularly hire entry-level support staff and promote from within. Roles like office coordinator, administrative assistant, or scheduling clerk at employers like a hospital system or a government contracting firm give you direct exposure to project workflows. Familiarity with Microsoft Project or similar tools, even from coursework, gives candidates a concrete advantage in local interviews.
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