Obayashi Corporation

Obayashi

Risk Assessment Specialist

Bachelor’s degree in Construction Management, Business Management, or related field; 5+ years in Insurance/Risk Management; experience with surety/brokers; travel optional.

Project Engineer (Tunneling/Underground Projects)

Project Engineer

BS in Mechanical or Civil Engineering; 5+ years tunneling/underground construction experience; strong software skills; ability to travel; strong communication.

Project Manager (Tunneling/Underground Projects)

Project Manager

BS in Civil Engineering; 10+ years in tunneling/underground, with 5+ in leadership; strong Excel/estimating software; ability to travel nationwide and work after hours.

Welder

5+ years welding experience, OSHA 10, ability to read blueprints, proficient MIG/TIG/Stick welding, teamwork, HS diploma preferred.

Tunnel Boring Machine (TBM) Mechanic

5+ years TBM mechanic experience; OSHA 10; safety oriented; able to perform diagnostics, preventive maintenance, and field repairs.

Diesel Mechanic

Experienced heavy equipment mechanic with 5+ years, OSHA 10, CDL may be required, able to lift 40 lbs, able to work in tunnel/site conditions.

TBM Mechanical Superintendent

8+ years mechanical experience; 5+ years TBM operations; strong knowledge of hydraulic/pneumatic/mechanical systems; leadership in tunneling/mining environments; read drawings and manuals; safety focus.

Senior Safety Manager

15+ years of safety experience in construction, tunnel, or heavy civil projects; 5+ years in supervision; CHST or higher; OSHA certification; Procore proficiency; tunneling TBM experience; strong leadership and documentation skills.

Tunnel Engineer

Bachelor’s degree in civil engineering; 0-5 years in tunneling or civil engineering; strong CAD skills; ability to work on-site; valid driver’s license.

Tunnel Laborer / Miner

Safety-focused with underground construction experience; OSHA 10/30 trained; high school diploma; ability to lift 40 lbs; strong teamwork.

Laborer

High school diploma or equivalent; OSHA 10 or 30 training; construction experience preferred, especially underground work; ability to lift 40 lbs; strong safety mindset.

Heavy Equipment Operator

3+ years heavy equipment experience; OSHA 10/30; HS diploma; able to work nights/weekends; physically able.

Project Cost Engineer

Bachelor’s degree; 3-7 years in cost engineering or project controls; strong cost control, budgeting, and reporting skills; proficient in Excel and cost management software.

Sr. Estimator (Heavy Civil)

Estimator

Ten+ years in heavy civil estimation; degree in construction management or civil engineering preferred; experience with HCSS and Viewpoint; strong communication.

Title	Location	Date
Risk Assessment Specialist Full Time · $85K-$120K · 5+ YOE Foster City, California, United States · Onsite	Foster City, California, United States Onsite	Apr 3, 2026
Project Engineer (Tunneling/Underground Projects) Full Time · 5+ YOE Allen, Texas, United States · Onsite	Allen, Texas, United States Onsite	Apr 2, 2026
Project Manager (Tunneling/Underground Projects) Full Time · 10+ YOE Manchester, New Hampshire, United States · Onsite	Manchester, New Hampshire, United States Onsite	Apr 2, 2026
Welder Full Time · $106K/yr · 5+ YOE Manchester, New Hampshire, United States · Onsite	Manchester, New Hampshire, United States Onsite	Mar 27, 2026
Tunnel Boring Machine (TBM) Mechanic Full Time · $116K/yr · 5+ YOE Manchester, New Hampshire, United States · Onsite	Manchester, New Hampshire, United States Onsite	Mar 27, 2026
Diesel Mechanic Full Time · $106K/yr · 5+ YOE Manchester, New Hampshire, United States · Onsite	Manchester, New Hampshire, United States Onsite	Mar 27, 2026
TBM Mechanical Superintendent Full Time · 8+ YOE Manchester, New Hampshire, United States · Onsite	Manchester, New Hampshire, United States Onsite	Feb 12, 2026
Senior Safety Manager Full Time · 15+ YOE Reading, Pennsylvania, United States · Onsite	Reading, Pennsylvania, United States Onsite	Jan 30, 2026
Tunnel Engineer Full Time · $90K-$100K · 0+ YOE Menlo Park, California, United States · Onsite	Menlo Park, California, United States Onsite	Dec 11, 2025
Tunnel Laborer / Miner Full Time · $60K/yr Manchester, New Hampshire, United States · Onsite	Manchester, New Hampshire, United States Onsite	Nov 12, 2025
Laborer Full Time · $48K/yr · 0+ YOE Manchester, New Hampshire, United States · Onsite	Manchester, New Hampshire, United States Onsite	Oct 30, 2025
Heavy Equipment Operator Full Time · $85K/yr · 3+ YOE Manchester, New Hampshire, United States · Onsite	Manchester, New Hampshire, United States Onsite	Oct 30, 2025
Project Cost Engineer Full Time · 3+ YOE Manchester, New Hampshire, United States · Onsite	Manchester, New Hampshire, United States Onsite	Oct 6, 2025
Sr. Estimator (Heavy Civil) Full Time · $137K-$177K · 10+ YOE Foster City, California, United States · Onsite	Foster City, California, United States Onsite	Mar 4, 2025

Activities	General constructionCivil engineeringReal estate developmentArchitectural designInfrastructure management
Headquarters	JP
Industries	ConstructionEngineering
Name	Obayashi Corporation
Employees	17,305
Type	Public
Subsidiaries	WebcorE.W. Howell Co.Kraemer North AmericaJS BuildersKenaidan Group
Tagline	Provides construction, civil engineering, and real estate development services.
Founded	1,892
Website	obayashi.co.jp
Stock Exchange	Tokyo Stock Exchange
Stock Symbol	1802

Obayashi Corporation

About Obayashi Corporation