• Skip to primary navigation
  • Skip to main content
  • Skip to footer

Side Hustles

Side Hustles

Side Hustles For All

  • Best Side Hustles
    • Woman sitting on a pile of coins and working on a laptop surrounded by icons representing different side hustle ideas

      31 Best Side Hustles to Earn Extra Money in 2026

    • Bicycle courier delivering food for their side hustle.

      What Is a Side Hustle?

    • Remote worker sitting at his desk making money from home

      18 Ways to Make Money from Home (Online and Offline Jobs)

    • By Category
      • Arts & Crafts
      • Business Services
      • Caregiving
      • Creative Services
      • Digital Freelance Services
      • View All
    • By Lifestyle
      • I’m introverted
      • I’m a man
      • I’m a woman
      • I’m a stay-at-home mom
      • I’m unique
      • View All
    • By Profession
      • Artists & Creatives
      • Musicians
      • Nurses
      • Physicians
      • Teachers
      • View All
    • By Age Group
      • College Students
      • Teens
      • Age 50+
      • Seniors
      • View All
    • By Skills & Interests
      • Get Paid to Lose Weight
      • Get Paid to Play Games
      • Get Paid to Read
      • Get Paid to Sleep
      • Get Paid to Travel
      • View All
  • Best Gig Apps
    • Freelance worker popping out of a phone screen and considering gig apps on the App Store and Google Play

      Top 6 Gig Apps to Make Real Cash in 2026

    • Smartphone surrounded by the icons of different money-making apps

      Top 10 Best Money-Making Apps to Try in 2026

    • two teenagers using job apps on a phone and laptop

      19 Job Apps for Teens to Find Jobs and Make Money

    • By Gig Type
      • Cashback
      • Data Entry
      • Delivery
      • Games
      • Product Testing
      • View All
    • By Payment Method
      • Bingo Games that Pay to Cash App
      • Games that Pay Real Money
      • Games that Pay to Cash App
      • Games that Pay via PayPal
      • Surveys that Pay to Cash App
      • View All
    • By Benefits
      • $20 Signup Bonuses
      • $25 Signup Bonuses
      • $50 Signup Bonuses
      • Best Signup Bonuses
      • Instant Signup Bonuses
      • View All
    • By Skills & Interests
      • Driving
      • Losing Weight
      • Playing Games
      • Product Testing
      • Watching Ads
      • View All
  • Job Hunting
    • Freelance worker browsing a job post on a freelance job board.

      23 Job Boards You Can Use to Find Remote Work

    • Freelance writer sitting at her laptop working on a project

      15 Best Remote Jobs That Require No Paid Work Experience

    • Teenager sitting at laptop working an online job

      14 Online Jobs for Teens (With No Experience)

    • Freelancing
      • Freelance Writing Sites
      • Freelance Writing Job Boards
      • Freelance Writing Platforms
      • View More
    • Gig & Shift Work
      • Gig Work Apps
      • On-Demand Work Apps
      • Shift Work Apps
      • View More
    • GPT (Get Paid To)
      • Microtasking
      • Product Testing
      • Survey Taking
      • View More
    • Remote Working
      • Best Remote Job Boards
      • Top 15 Remote Jobs
      • View More
  • Job Board
    • Work Schedule
      • Part-Time Jobs
      • Per-Diem Jobs
      • Go Search
    • Work Environment
      • Hybrid Jobs
      • Remote Jobs
      • Go Search
    • Employment Type
      • Contractor Jobs
      • Internship Jobs
      • Temporary Jobs
      • Go Search
    • Job Title
      • Accounting Jobs
      • Data Entry Jobs
      • Nursing Jobs
      • Online Teaching Jobs
      • Software Engineer Jobs
      • Go Search
    • State
      • California Jobs
      • Florida Jobs
      • New York Jobs
      • Pennsylvania Jobs
      • Texas Jobs
      • Go Search
    • City
      • Chicago, IL
      • Houston, TX
      • Los Angeles, CA
      • New York City, NY
      • Phoenix, AZ
      • Go Search

Home Flexible Job Board Construction Materials Testing Laboratory Technician (Flex)

$17.25–24.30/hr 38d ago

Construction Materials Testing Laboratory Technician (Flex)

Boost your chances before you apply.

  • ✨ Apply 10x Faster Free

    It takes 30+ tailored applications to land jobs like this one. We'll help you get that done in 1 hour.

    No Credit Card Required

  • Proceed to Application Go directly to the company's job page to apply.
Logo

Kleinfelder Inc

San Diego, CA, US

On-site

✨ Apply 10x Faster

Analyze your resume for missing keywords, then one-click optimize it. Don't be anything less than a 100% match candidate.

Free

No Credit Card Required

Summary

Perform routine to moderately complex laboratory testing on construction materials such as soils, asphalt, aggregates, and concrete. Maintain laboratory equipment, document test results accurately, and assist with the handling and tracking of incoming samples.

Job Description

Job Description

Take Your Construction Career to the Next Level! 

Kleinfelder, a Forbes' Top Employer for Engineers in North America, is committed to a people-first culture, technical excellence, and creating opportunities where employees can thrive!

Are you ready to be challenged, make a difference, and experience professional growth in your career? Kleinfelder's Construction Services team is looking for you! From construction management and observation/inspection services to laboratory testing and materials and forensic engineering, our Construction Services market helps to develop and maintain America's infrastructure and supply chain and is a recognized industry leader with more than 25 accredited laboratories.  

Step into Your New Role

Kleinfelder is seeking a Laboratory Construction Materials Testing Technician to join our San Diego, California team on a flex basis.

This position supports the laboratory testing of construction materials for conformance with applicable project plans, specifications, and engineering requirements. The selected candidate will perform laboratory testing on soils, asphalt, aggregates, and concrete materials, and assist with general laboratory operations as assigned.

This is an excellent opportunity for an individual interested in developing a career in construction materials testing, geotechnical engineering support, and laboratory operations.

Essential Duties and Responsibilities

Responsibilities include, but are not limited to, the following:

  • Perform routine to moderately complex laboratory testing on construction materials, including:
    • Soils
    • Asphalt
    • Aggregates
    • Concrete
  • Prepare, label, and organize test specimens and samples
  • Accurately document and record test data and results
  • Maintain laboratory equipment, tools, and testing areas in clean and operational condition
  • Assist with receiving, handling, and tracking incoming samples
  • Follow applicable laboratory procedures, standards, and safety requirements
  • Support additional laboratory and project-related tasks assigned by the supervisor or laboratory management

Minimum Qualifications

Candidates must possess the following qualifications:

  • High school diploma or equivalent
  • Valid driver’s license with a clean driving record
  • Ability to pass a drug screening
  • Ability to work effectively both independently and as part of a team
  • Strong attention to detail and organizational skills
  • Willingness to learn and develop technical skills
  • Ability to work construction-related schedules, including occasional night shifts and weekends as needed
  • Ability to travel locally to support project assignments when required

Preferred Qualifications

The following certifications are preferred but not required at the time of hire. Candidates must be willing and able to obtain them as part of their professional development:

  • ACI Concrete Laboratory Testing Technician
  • Caltrans Certifications

Technical Skills

Candidates should possess basic computer proficiency and general working knowledge of:

  • Microsoft Word
  • Microsoft Excel
  • Microsoft Outlook

Work Environment

This position is primarily based in the San Diego Office Laboratory. Work may occasionally require local travel to support project needs. The role may involve standing for extended periods, lifting and handling testing materials, and working in a laboratory and construction-related environment.

Professional Development

Kleinfelder is committed to supporting employee growth and career advancement. The selected candidate will have opportunities to expand technical knowledge and obtain industry certifications through:

  • Company-supported training
  • On-the-job mentoring
  • Professional development opportunities

This position offers a strong foundation for a long-term career within a highly successful and growing team.

Move Forward with Kleinfelder

Kleinfelder has been connecting great people to the best work since 1961. We are engineers, scientists, and construction professionals providing solutions that improve our clients' transportation, water, energy, and other private infrastructure. As a responsive, cross-disciplinary team of bright, curious, and innovative problem-solvers, we are dedicated to doing the right thing, every day, on every project from over 85 offices in the US, Canada, and Australia. Connecting great people to the best work is our purpose - together, we deliver.

Progress with an Employer that Values You

Kleinfelder is an inclusive organization free from discrimination. We are a stronger organization when we are a diverse workforce and believe that through diversity, equity, and inclusion comes creativity, innovation, and unity. We are proud to offer the following:

 

Benefits: Kleinfelder offers an excellent compensation and benefits package, including: medical, dental, vision, life insurance, 401(k) plan, and paid holidays. The expected hourly pay range for the position is displayed in accordance with the California Pay Scale Disclosure Law. Final agreed upon compensation is based upon individual qualifications and experience. Hourly range: $17.25 - $24.30 per hour.

Career Development: We are committed to investing in the professional development of our staff, offering each employee every opportunity to grow, develop, and take control of their career paths. We support these efforts through reimbursements for continuing education as well as many of the expenses associated with trainings and certifications, and opportunities for career development through our internal Mentoring Program.

Equal Opportunity: Kleinfelder is an Equal Opportunity Employer - Minorities/Women/Disabled/Veterans. (Compliant with the new VEVRAA and Section 503 rules).

NOTICE TO THIRD PARTY AGENCIES 

Please note that Kleinfelder does not accept unsolicited resumes from recruiters or employment agencies. In the absence of a signed Recruitment Fee Agreement, Kleinfelder will not consider or agree to payment for any referral compensation or recruiter fee. In the event a recruiter or agency submits a resume or candidate without a previously signed agreement, Kleinfelder explicitly reserves the right to pursue and hire those candidate(s) without any financial obligation to the recruiter or agency. Any unsolicited resume, including those submitted to hiring managers, are deemed to be the property of Kleinfelder.

About the company

Kleinfelder Inc

The Kleinfelder Group, Inc. (“Kleinfelder”), a leading engineering, design, construction management, construction materials inspection and testing, and environmental professional services firm, acquired Century Engineering, Inc. (Century) and all affiliates on November 15, 2021. Follow Kleinfelder on LinkedIn or visit kleinfelder.com for more information.

Founded in 1953, Century Engineering is a multidisciplinary engineering firm that sets the standard for what it means to be a responsible partner to clients, stakeholders and employees and to the communities in which we live and work.

Founded

1961

Company size

501-1,000 employees

Industry

Civil Engineering

Org type

Privately Held

Headquarters

Hunt Valley, MD

Apply Now

About the company

Kleinfelder Inc

The Kleinfelder Group, Inc. (“Kleinfelder”), a leading engineering, design, construction management, construction materials inspection and testing, and environmental professional services firm, acquired Century Engineering, Inc. (Century) and all affiliates on November 15, 2021. Follow Kleinfelder on LinkedIn or visit kleinfelder.com for more information.

Founded in 1953, Century Engineering is a multidisciplinary engineering firm that sets the standard for what it means to be a responsible partner to clients, stakeholders and employees and to the communities in which we live and work.

Founded

1961

Company size

501-1,000 employees

Industry

Civil Engineering

Org type

Privately Held

Headquarters

Hunt Valley, MD

Footer

sidehustles.com
Facebook Twitter Instagram LinkedIn Reddit TikTok YouTube

Show Me The Money

  • Side Hustle Basics
  • Side Hustle Job Board (Remote & Part-Time Jobs)
  • Gig App Reviews
  • Job Hunting
  • Manage Your Money
  • The Gig Apple: News & Events

Company

  • About Us
  • Contact Us
  • Become a Contributor
  • Advertising & Sponsorships
  • Partner With Us
  • Editorial Guidelines

Side Hustles © All rights reserved

  • Privacy Policy
  • Terms of Service

Thanks for using our free job board

Your review would mean a lot to us.

If you love that we're just giving away remote jobs for free with no paywall, please spread the word. (You will need to create an account on Trustpilot, for which we'll be eternally grateful.) Good luck out there!

Leave a Review Not yet. Send me to the job post.