G. J. Oliver

About Us

For over 50 years, G.J. Oliver, Inc. has been a trusted, family-owned manufacturer serving the oil and gas industry and beyond. Located in Phillipsburg, New Jersey (on the NJ/PA border), we specialize in large-scale custom fabrications, precision machining, and API Class machinery systems.

Founded by John Oliver’s grandfather and still operated by the Oliver family today, we’ve built a reputation for delivering high-quality steel fabrications, castings, and engineered systems that meet the most demanding industry standards. As our business continues to grow, we’ve invested heavily in new equipment and top machinist talent.

What We Do

• Large Fabrications & Castings – machining complex and oversized components.
• Custom Steel Fabrications – pressure vessels, engineered systems, and packaging.
• Precision CNC Machining – horizontal boring mills, vertical turning lathes, gantry mills, and manual machines.
• API Class Equipment – Dry Gas Seal Support Systems, Lube & Seal Oil Consoles, and custom machinery packaging.
• Quality Assurance – inspection with FARO Arm CMM and Laser Tracker systems.

Our shop is high-mix, low-volume, providing machinists with challenging and rewarding work on unique parts every day.

Our Equipment

G.J. Oliver operates a wide range of advanced machinery, including:

• Horizontal Boring Mills (Toshiba, Shibaura, Union, TOS)
• Vertical Turning Lathes (VTLs) up to 215” rotary tables
• Okuma Gantry Mill & US Burke Millright Vertical
• Multiple manual lathes, radial drills, and keyseaters
• Advanced inspection with FARO Arm CMM & Laser Tracker

This gives machinists the opportunity to work with some of the largest and most impressive machines in the region.

Our Culture

At G.J. Oliver, we value:

• Family-first mentality – stability, teamwork, and respect.
• Long-term careers – strong retention and apprenticeship programs.
• Shared success – when the company thrives, employees thrive.
• Continuous investment – over $3M invested in new machining equipment in the last three years.

We’re looking for machinists who want to grow with us long-term as part of our succession planning for the future.

Benefits & Perks

• Competitive pay: $30–$44/hr based on experience
• Plenty of overtime (55–60 hrs/week typical)
• Relocation assistance available
• Apprenticeship program (tuition covered)
• Health, Dental, Vision Insurance
• 401(k) with 4–6% company match
• 13 Paid Holidays + your Birthday off
• PTO (negotiable)
• Company-paid life insurance

Join G.J. Oliver in Phillipsburg, NJ and become part of a growing, family-owned company where machinists are valued, equipped with world-class machines, and given the opportunity to build a long-term career.