Company Overview
RBA Builders is a full-service General Contractor with a self-performing tenant improvement division, providing construction services across the commercial, industrial, entertainment, educational, aerospace, and medical sectors. We are a close-knit, team-driven company that believes great projects start with great people. Our approach blends proven construction practices with new technologies, hands-on mentorship, and a collaborative culture that supports learning and career growth. RBA Builders is founded on the values of safety, quality, honesty, and hard work, with a strong emphasis on service and long-term relationships. These beliefs are reflected in our four Core Values: Do the right thing even when it is inconvenient Fun, family, fellowship We are here for you Fiscally committed to the team’s success These Core Values guide how we support our employees, partners, and clients while fostering a positive and inclusive work environment. RBA Builders LLC is located in Southern California in the city of Fountain Valley and is committed to becoming your Contractor of Choice and a place where careers are built. Job Overview
RBA Builders is looking for a motivated entry level Junior Estimator to join our Preconstruction team. This is a great opportunity for someone just starting their construction career who wants to learn how projects are priced, planned, and built. This role is ideal for a hardworking, detail-oriented person who enjoys problem solving, working with numbers, and learning how commercial buildings come together. Responsibilities
Assist with quantity takeoffs from construction drawings and specifications Support senior estimators in assembling bid proposals and pricing packages Help solicit, organize, and compare subcontractor and supplier quotes Maintain estimating spreadsheets and documentation for bid accuracy Participate in bid reviews and internal preconstruction meetings Learn company estimating standards, workflows, and tools Communicate with project managers, vendors, and subcontractors as needed Requirements
High School Diploma or equivalent Strong work ethic and willingness to learn Organized, dependable, and detail focused Comfortable working with numbers and basic math Positive attitude and ability to take coaching Education
High school graduate Construction related classes, trade school, or drafting courses are a plus, but not required Experience
Any construction exposure, summer work, or hands on experience is helpful Skills
Basic computer skills (Excel, email, file organization) Ability to read drawings or learn quickly with training Good communication and follow through Strong attention to detail Certifications
OSHA 10 or willingness to obtain is a plus Preferred Qualifications
Interest in construction management or building trades Experience working summer jobs in construction or similar environments Desire to grow into a long-term estimating or project management career Working Conditions
Full time office-based position Occasional jobsite visits for learning and exposure Mentorship and hands on training provided Benefits
Competitive salary and performance growth opportunities Health, dental, and vision insurance Paid time off and holidays 401(k) with company match Career development and mentorship within the estimating department
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RBA Builders is a full-service General Contractor with a self-performing tenant improvement division, providing construction services across the commercial, industrial, entertainment, educational, aerospace, and medical sectors. We are a close-knit, team-driven company that believes great projects start with great people. Our approach blends proven construction practices with new technologies, hands-on mentorship, and a collaborative culture that supports learning and career growth. RBA Builders is founded on the values of safety, quality, honesty, and hard work, with a strong emphasis on service and long-term relationships. These beliefs are reflected in our four Core Values: Do the right thing even when it is inconvenient Fun, family, fellowship We are here for you Fiscally committed to the team’s success These Core Values guide how we support our employees, partners, and clients while fostering a positive and inclusive work environment. RBA Builders LLC is located in Southern California in the city of Fountain Valley and is committed to becoming your Contractor of Choice and a place where careers are built. Job Overview
RBA Builders is looking for a motivated entry level Junior Estimator to join our Preconstruction team. This is a great opportunity for someone just starting their construction career who wants to learn how projects are priced, planned, and built. This role is ideal for a hardworking, detail-oriented person who enjoys problem solving, working with numbers, and learning how commercial buildings come together. Responsibilities
Assist with quantity takeoffs from construction drawings and specifications Support senior estimators in assembling bid proposals and pricing packages Help solicit, organize, and compare subcontractor and supplier quotes Maintain estimating spreadsheets and documentation for bid accuracy Participate in bid reviews and internal preconstruction meetings Learn company estimating standards, workflows, and tools Communicate with project managers, vendors, and subcontractors as needed Requirements
High School Diploma or equivalent Strong work ethic and willingness to learn Organized, dependable, and detail focused Comfortable working with numbers and basic math Positive attitude and ability to take coaching Education
High school graduate Construction related classes, trade school, or drafting courses are a plus, but not required Experience
Any construction exposure, summer work, or hands on experience is helpful Skills
Basic computer skills (Excel, email, file organization) Ability to read drawings or learn quickly with training Good communication and follow through Strong attention to detail Certifications
OSHA 10 or willingness to obtain is a plus Preferred Qualifications
Interest in construction management or building trades Experience working summer jobs in construction or similar environments Desire to grow into a long-term estimating or project management career Working Conditions
Full time office-based position Occasional jobsite visits for learning and exposure Mentorship and hands on training provided Benefits
Competitive salary and performance growth opportunities Health, dental, and vision insurance Paid time off and holidays 401(k) with company match Career development and mentorship within the estimating department
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