Mechanical Engineer - Oil and Gas

Atwell, LLC; Dallas (TX); On-site; USD 90,000 - 145,000; Full time

Benefits offered by this job

Generous Paid Time Off

Flexible work schedules

Travel vouchers

Job summary

Atwell, LLC in the United States is seeking a mid-level Mechanical Project Engineer (PE) to support oil & natural gas, CO₂, hydrogen, and RNG pipeline and facility projects. This role focuses on mechanical design and project execution for large pipeline systems and facilities, coordinating across disciplines to deliver safe, compliant, and constructible solutions.

You’ll serve as mechanical lead or key contributor, mentor juniors, interface with clients and regulators, and travel as needed.

Qualifications

• Bachelor’s degree in Mechanical Engineering and PE licensure required.
• Experience leading mechanical projects and coordinating across disciplines.
• Familiarity with pipeline facilities and M&R stations is a plus.

Responsibilities

• Lead and support project teams on assigned tasks; provide technical guidance and implement client-requested design changes.
• Interface with clients, EPCs, vendors, and regulators; communicate scope, progress, risks, and design decisions.
• Coordinate with civil/structural/electrical/instrumentation/process teams to ensure integrated, constructible designs.
• Mentor junior engineers/designers; contribute to mechanical best practices, standards, and QA/QC.
• Travel to offices, vendor facilities, and jobsites as needed.

Skills

Mechanical project leadership

Cross-disciplinary coordination

Mechanical design

Education

Bachelor’s degree in Mechanical Engineering

PE license

Tools

AutoCAD

Bluebeam

Plant 3D

CADWorx

AVEVA

P&IDs

Job description

Atwell, LLC is a bold leader in the consulting, engineering, and construction services industry, delivering a broad range of creative solutions to clients in the real estate & land development, and energy markets. We have a strong national presence and a diverse, award-winning project portfolio. Atwell is a privately owned company, with 2,000+ passionate team members across 75+ locations and growing!

Atwell, LLCis a proud recipient of the following 2025awards:

• Ten consecutive years in a row as a “Best Place to Work” by Zweig Group (#11)
• Recognized as #70 in the ENR Top 500 Design Firms, ranked in every region
• Recognized in Crain’s “Fast 50” as one of the fastest-growing companies (#14)
• Recognized as the 2025 ENR Design Firm of the year for the Southeastern US

Position Snapshot

Atwell is hiring a mid-level Mechanical Project Engineer (PE) to support oil & natural gas, CO₂, hydrogen, and RNG pipeline and facility projects. This role focuses on mechanical design and project execution for large pipeline systems and facilities (meter stations, compressor stations, terminals, valve sites, pigging facilities). You’ll work from concept through construction/commissioning, coordinating across disciplines to deliver safe, compliant, and constructible solutions.

Essential Functions

• Lead and support project teams on assigned tasks; provide technical guidance and implement client-requested design changes.
• Interface with clients, EPCs, vendors, and regulators; communicate scope, progress, risks, and design decisions.
• Coordinate with civil/structural/electrical/instrumentation/process teams to ensure integrated, constructible designs.
• Mentor junior engineers/designers; contribute to mechanical best practices, standards, and QA/QC.
• Travel to offices, vendor facilities, and jobsites as needed.

Education / Credentials

• Bachelor’s degree in Mechanical Engineering (or related discipline).
• Professional Engineer (PE) license required (or ability to obtain promptly per state requirements).

Day to Day

• Serve as the mechanical engineering lead or key contributor for pipeline and facility projects, including:
• Meter & regulator (M&R) stations, valve sites, pig launcher/receiver sites
• Compressor stations and station tie-ins
• Terminals, pump stations, and related facility upgrades/expansions
• Develop and own mechanical deliverables such as:
• Mechanical basis-of-design, design criteria, and equipment/system selections
• P&IDs, PFDs, line lists, and mechanical specifications (in coordination with process)
• Equipment data sheets and procurement packages (valves, meters, regulators, filters/separators, pumps, compressors packages interface, pigging components, heaters, coolers, heat exchangers)
• Piping isometrics, piping plans, tie-in packages, and installation details
• Perform/oversee engineering calculations and technical evaluations, including:
• Pressure design and code compliance
• Relief device sizing / overpressure protection support and coordination
• Hydraulic/line sizing coordination, equipment sizing support, and operating case reviews
• Support facility layout and integration:
• 3D model/design review participation as applicable; resolve clashes and support constructability
• Coordinate with structural/civil for foundation loads, pipe rack interfaces, and equipment anchorage

Preferred Tools & Experience

• Strong experience with piping design, facility mechanical systems, and field execution support.
• Familiarity with AutoCAD, Bluebeam, Microsoft Office; exposure to 3D tools (Plant 3D, CADWorx, AVEVA, or similar) is a plus.
• Consulting/EPC experience and comfort working to owner/operator standards.
• Experience supporting projects in operating facilities

Pay Range - $90,000 - $145,000 base + end of year bonus.

Disclaimer

While AI tools may support your application process, this role is built on human talent. Your judgment, experience, and character matter most, so we encourage you to showcase what makes you uniquely you.

Atwell Benefits:

To attract and retain the best professionals in the industry, we aim to provide an excellent working environment and a progressive benefits program designed to support your personal and professional needs.

Work/Life:

• Generous Paid Time Off
• Flexible work schedules are available for some positions
• Tenure Awards — Travel Vouchers to see the world based on your travel preferences

Compensation:

• Competitive Compensation packages
• Annual bonuses, spot bonuses and peer recognition awards
• 401K match - 1:1 up to 4% of compensation
• Tuition Assistance
• Student Loan Repayment
• Paid Licensing / Certification Fees and Renewals
• Financial Rewards for Obtaining Licensure
• Employee Referrals
• Annual Wellness Reimbursement for anything wellness related (Gym memberships, fitness tracker, home gym equipment, etc.)
• Dependent Care Match
• Medical (BC/BS), Dental (Delta), and Vision (VSP)
• Family Planning & IVF Benefits
• Pet Insurance
• Health Savings Account & Flex Spending Account options
• Employer paid LTD, STD, and life insurance
• Metlife Supplemental Benefits covering accident, hospitalization, and critical illness
• Member Assistance Program (MAP) with complimentary counseling sessions, legal benefits, financial consultations, and work/life referral services