• Prepare installations by reviewing the system’s technical specifications and confirming internal and client-side technical and hardware prerequisites to ensure on-time completion • Perform on-site system installations and provide client onboarding training to commission equipment in accordance with the specification • Carry out regular and/or preventive maintenance according to the defined protocol for the relevant system to meet compliance or contractual requirements • Diagnose and resolve system malfunctions on-site and/or via remote access to restore operational status • Maintain regular follow-up and a high-quality relationship with the client to sustain long-term commercial relationships • Write external and internal activity reports and log work in the dedicated service management software to ensure traceability and correct cost allocation • Act as the liaison between factory experts and the client to resolve complex technical issues • Contribute to the preparation of quotes/technical estimates for systems in the installed base to ensure compatibility and feasibility

• You will be responsible for providing technical support to our customers. • Deliver a high level of support to customers including installations, customer training, corrective and preventive maintenance, and telephone support. • Perform on-site system installations and provide hands-on user training to the customer. • Maintain strong customer relationships to ensure long-term business partnerships. • Prepare external and internal activity reports and perform reporting in the company's dedicated software. • Act as the liaison between factory experts and the customer to resolve complex issues.

Role Description The Client Field Service Technician position is responsible for day-to-day operations by providing customer service and onsite scheduled maintenance for ultrapure water purification systems in our marine division. This position travels domestically and internationally 80-100%. - Perform on-site troubleshooting of equipment - Adjust equipment settings to specifications - Identify and promote proactive, value-added service opportunities - Perform installation supervision, commissioning, operation and maintenance of equipment at customer site - Develop positive working relationship with customers - Self-manage - Manage travel logistics and related expenses Qualifications - High school diploma or equivalent plus technical training - Industrial workplace safety (mechanical, electrical, chemical, fire and material handling) - Industrial math including applied geometry and practical trigonometry - Practical measurements (length, temperature, energy, force, power, fluid, etc.) - Bench work - Preventive maintenance techniques - Report writing - 4-6 years electrical/mechanical equipment experience - Hands-on experience with Programmable Logic Controllers required - Ability to read blueprints, plans & wiring schematics - Hands-on experience working with instrumentation and electrical components required - Previous knowledge of water purification equipment and processes preferred - Competent with personal computers and office related software - Must be comfortable with 80-100% travel Benefits - 401(k) matching - Health Insurance - Dental Insurance - Vision Insurance - Flexible spending account - Health savings account - Life insurance - Paid time off - Professional development assistance - Referral program - Tuition reimbursement

Overview William Charles Electric is hiring Field Engineers to support our Power Delivery team in the Midwest. The Field Engineer will provide support to the Project Manager and Construction Manager on various projects. General responsibilities include implementation of the project specific Quality Plan, site specific plans, material inventory and receiving. Location & Travel Details: Must be capable of up to 75% travel (e.g. 3 weeks or 15 days per month) by automobile (as driver and passenger), commercial airlines, rental vehicles and public transportation and be able to lodge in public facilities. Travel will be necessary to conduct the duties of this job, and the employee must have the ability to drive and have proper licensing. Company Overview: With more than a century of exceptional work on our resume, William Charles Construction remains guided by the pursuit of excellence. Our “Do it Right the First Time” work ethic has been the cornerstone of our business philosophy since 1892. With our broad background in heavy civil construction, environmental management and mining and materials production, we have the expertise to help our customers complete their most complex projects. MasTec’s Clean Energy & Infrastructure (CE&I) segment generates over $4 billion in annual revenue, providing construction services across industrial, renewables and infrastructure sectors. Our industrial expertise includes building products manufacturers, decarbonization, power generation facilities, manufacturing plants and mining. In infrastructure, we specialize in general heavy civil construction, underground utilities, structures, electrical work, material production, roadways, bridges, specialty pavement overlays, environmental projects and commercial buildings. Our renewables sector focuses on solar, wind and battery storage. Sustainability and safety are foundational to our culture and influence everything we do. MasTec, a minority-owned Fortune 500 company, has shaped the construction industry for more than 90 years. With over 35,000 employees and 400 offices nationwide, we provide flexibility and career growth in dynamic work environments. Responsibilities - Performs field survey work in regards to layout and tracking of work activities, utilizing PC based software and GPS station/field equipment. - Manages project specific quality control records and ensuring that required reporting is accomplished. - Planning, scheduling and coordinating to ensure that all required audits/inspections are performed and documented. - Assist with material inventory and receiving paperwork. - Assist with final job closeout, as-builts, job binder creation. - Assist with subcontractor scheduling and management - Will provide other duties as assigned. - Extended work hours and weekend work may be required. - Assist with RFI (Request for Information) submittals. Qualifications - Bachelor’s degree (construction management, civil engineering or equivalent) preferred - Previous construction experience desired. Knowledge/Skills/Abilities - Strong blue print reading/interpretation skills. - Strong computer skills and ability to learn new software packages quickly - Proficiency with Microsoft suites program. - Strong communication skills. Verbal and written. - Familiarity with GPS and Surveying Equipment - Process driven with a strong attention to details. - Customer focused. - Preferred experience with some or all of this software: ProCore, E-builder, View Point, Build to Win - Must be authorized to work in the United States now and in the future without sponsorship for employment visa status (e.g. H-1B visa status) What's in it for you: Financial Wellbeing - Compensation $65,000-$70,000 / year, commensurate with experience - 401(k) with company match & Employee Stock Purchase Plan (ESPP) - Flexible spending account (Healthcare & Dependent care) Health & Wellness - Medical, Dental, and Vision insurance (plan choice) - coverage for spouse, domestic partner, and children - Diabetes Management, Telehealth Coverage, Prescription Drug Plan, Pet Insurance Family & Lifestyle - Paid Time Off, Paid Holidays, Bereavement Leave - Military Leave, including Differential Pay and Benefits Continuation - Employee Assistance Program Planning for the Unexpected - Short and long-term disability, life insurance, and accidental death & dismemberment - Voluntary life insurance, accident, critical illness, hospital indemnity coverage - Emergency Travel Assistance Program - Group legal plan Position may be subject to pre-employment screening, which may include background check and drug testing. Accessibility: If you need accommodation as part of the employment process, contact ceicareers@mastec.com. Due to the high volume of applications received, we are unable to respond to individual requests regarding application status. Please log into your candidate profile for up-to-date information. MasTec, Inc. is an Equal Employment Opportunity Employer. The Company's policy is not to unlawfully discriminate against any applicant or employee on the basis of race, color, sex, sexual orientation, gender identity, religion, national origin, age, disability, genetic information, military status, or any other consideration made unlawful by applicable federal, state, or local laws. The Company also prohibits harassment of applicants and employees based on any of these protected categories. It is also MasTec's policy to comply with all applicable state, federal and local laws respecting consideration of unemployment status in making hiring decisions. MasTec Clean Energy & Infrastructure and our subsidiaries do not work with any third-party recruiters or agencies without a valid signed agreement and partnership with the Corporate Talent Acquisition Team. Disclaimer: MasTec and our Subsidiaries will never ask prospective employees for any form of payment or money transfer as part of job application or onboarding. We do not ask prospective employees for information about credit cards or personal passwords, and it does not require applicants to purchase equipment or software. Ensure that all recruiter email addresses end in @mastec.com or @talent.icims.com. If you suspect you are the target of a scam, we advise you to contact your local law enforcement agency and report fraud at https://reportfraud.ftc.gov/. #LI-DS1 #LI-Remote