Commission Oil Rig Mechanical Engineer Jobs in Riverside, CA

CECO Environmental is a global leader in providing sustainable solutions for industrial air, water, and energy transition. Since 1966, we've been addressing the world's most pressing environmental challenges. Our mission is to protect people, the environment, and industrial equipment, making a tangible impact across industries like renewable energy, semiconductor manufacturing, power generation, and water treatment. As a purpose-driven company, we foster a culture of innovation, collaboration, and integrity, ensuring that every project we undertake creates lasting positive change. At CECO, you'll be part of a growing, dynamic team committed to a cleaner, safer, and more sustainable future. We are proud to share that CECO was named one of Newsweek's America's Greatest Companies for 2025 and that Forbes recognized CECO as one of America's Most Successful Small Cap Companies for 2026, marking our third consecutive year on the Forbes list. CECO Environmental is a publicly traded company on the NASDAQ under the ticker CECO, reflecting our strong growth, financial performance, and commitment to delivering value to shareholders. As part of the CECO Environmental family of brands, Compass Water Solutions plays a critical role in delivering specialized water solutions that protect both people and the environment. By joining our team, you'll contribute to our shared mission of protecting global industrial operations and shaping the future of environmental stewardship.

The High-Spec Water Mechanical Engineer is responsible for the design, specification, technical assurance, and delivery of complex water and wastewater mechanical systems across high value, high risk, or regulated projects. The role requires deep technical expertise, strong stakeholder engagement, and leadership in ensuring systems meet stringent performance, safety, and regulatory requirements.

This position plays a critical role in delivering robust, efficient, and compliant water infrastructure, often within multidisciplinary teams and fast paced environments.

Your Responsibilities Will Be:

Technical & Engineering

Lead the mechanical design and specification of water and wastewater systems, including:

o Pumping systemso Treatment processeso Pipework and valve networkso Filtration and disinfection systemso Mechanical plant and ancillary equipment

Produce and review high spec technical documentation, including:

o Design calculationso Technical specificationso Schematics and layoutso Equipment schedules

Ensure designs comply with industry standards, codes, and regulations (e.g. WRAS, BS/EN standards, local water authority requirements).

Carry out technical assurance and independent design reviews.

Project Delivery

Support projects from concept through detailed design, construction, commissioning, and handover.

Liaise with clients, contractors, suppliers, and regulators to resolve technical challenges.

Review contractor submissions, method statements, and commissioning plans.

Provide site support, inspections, and witness testing where required.

Leadership & Collaboration

Act as a technical authority for water mechanical systems within the business.

Mentor and provide guidance to junior engineers and project teams.

Contribute to technical strategy, best practice development, and continuous improvement initiatives.

Collaborate closely with civil, electrical, ICA, and process engineering disciplines.

Required Qualifications:

Degree in Mechanical Engineering or relevant discipline.

Significant experience in water, wastewater, or utilities engineering environments.

Strong understanding of hydraulics, pumping systems, treatment processes, and mechanical plant.

Proven ability to deliver high spec, safety critical, or regulated projects.

Excellent technical writing, problem solving, and communication skills.

Preferred Qualifications:

Chartered or working toward CEng status (IMechE or equivalent).

Experience with major frameworks, utilities providers, or mission critical facilities.

Knowledge of energy efficiency, resilience, and sustainability principles.

Familiarity with digital design tools (e.g. 3D modelling, BIM environments).

ADA Requirements:

Physical Demand: Light to moderate work, involving exertion of up to 20 pounds of force occasionally and up to 5 pounds frequently.

This role is based in a manufacturing environment. Incumbents may be exposed to moving mechanical parts, electrical currents, vibrations, fumes, odors, dust, gases, chemicals, oils, extreme temperatures, inadequate lighting, confined spaces, and high noise levels. Occasional travel may be required.

We Offer:We provide a variety of medical insurance plans, with dental and vision coverage, Employee 401(k), tuition reimbursement, and much more.

At CECO, we are committed to a culture where every employee is valued and respected for their unique experiences and perspectives. We believe a diverse and inclusive work environment contributes to the rich exchange of ideas and diversity of thoughts, that inspires innovation and brings the best solutions to our customers.ABOUT USCECO'sCommitment to Our People

At CECO, our people are at the center of everything we do. Whether you're a professional looking for a career change, an undergraduate student exploring opportunities, or a recent graduate with an advanced degree, you'll find your chance to make a difference with CECO.ABOUT CECOCECO Environmental is a leading environmentally focused, diversified industrial company whose solutions protect people, the environment, and industrial equipment across the globe, serving a broad landscape of industrial air, industrial water and energy transition markets.

We serve these markets and our global customers through our key business segments: Engineered Systems and Industrial Process Solutions. Learn more about CECO by visitingAbout Us.

Equal Opportunity EmployerCECO is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to sex, race, color, religion, national origin, age, marital status, political affiliation, sexual orientation, gender identity, genetic information, disability or protected veteran status. We are committed to providing a workplace free of any discrimination or harassment.Accessibility Assistance or AccommodationIf you have a disability and are having difficulty accessing or using this website to apply for a position, please contact:hr@OneCeco.com.