Full-Time

Engineer 3 / Engineer Senior

Combustion Turbines

Arizona Public Service

Arizona Public Service

1,001-5,000 employees

Delivers electricity to Arizona customers

No salary listed

Phoenix, AZ, USA

Hybrid

Hybrid role; ~40% in-person at an APS or other location. Must reside in Arizona (or New Mexico for Four Corners-based employees).

Category
Mechanical Engineering (2)
,

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Requirements
  • A four year Bachelor of Science degree in an engineering discipline or related applied science discipline (see approved list) from an ABET accredited institution plus five (5) years working experience in Engineering-related positions for the Engineer III - Combustion Turbine.
  • A four year Bachelor of Science degree in an engineering discipline or related applied science discipline (see approved list) from an ABET accredited institution plus eight (8) years working experience in Engineering-related positions for the Engineer Senior - Combustion Turbine.
Responsibilities
  • Performs engineering tasks requiring skills and experience gained through application of engineering methods and analysis.
  • Responsibility for technical decisions and interpretations.
  • Provides technical guidance and leadership to others as needed.
  • May be subject to shift work.
  • Develops and applies unique solutions and applications to a broad range of technical issues and problems (solutions that typically require original and creative approaches). Makes decisions and recommendations that have a moderate to significant effect on the overall organization performance.
  • Prepares complex engineering plans, designs, analysis, specifications, cost estimates, evaluations, studies, technical reviews, investigations and verifications. Ensures engineering analyses, design, project control, schedule commitments or oversight work is technically sound, cost effective, and in compliance with established standards, codes, and regulations. Checks and reviews analysis, evaluations, and investigations of others.
  • Interfaces with customers and other departments to ensure project objectives are understood and that work scope meets customer requirements, budget and schedule. Contacts customers and various levels of management to obtain or present technical data. Presents the results of designs, studies projects (in terms of new techniques) or approaches to subordinates, colleagues, management and customers.
  • Provides technical guidance, leadership and support to less experienced engineers.
  • Assists the organization in problem solving, as needed, by critically challenging assumptions and decisions to ensure the most optimal solutions and strategies are implemented. Assists in developing long-range strategies for significant site problems.
  • Leverages industry and organization resources to resolve key technical issues. Develops a path forward to address these issues including bridging strategies. May interface with outside agencies and regulatory authorities.
  • May plan and coordinate programs and large-scale engineering projects or multiple medium-scale projects while acting as a technical specialist for a specific engineering field. May be responsible for all aspects of work scope; directing consultants; conducting feasibility studies; determining staff, cost estimates and resource requirements; and recommending engineering criteria.
  • Monitors projects and recommends modifications to increase operating efficiency and /or reviews design and documentation of complex projects to ensure compliance with design specifications, schedules and any regulatory requirements. May develop, negotiate and manage contracts and contract revisions.
  • May research new developments and technology and make recommendations to management on their feasibility for Company operations.
Desired Qualifications
  • Problem analysis/resolution techniques.
  • Knowledge of applicable codes, standards, practices, methods and safety standards in the area of applicable engineering discipline.
  • Experience in the utility industry.
  • Professional Engineer (PE) licensure.
  • Approved degrees: Materials Science/Metallurgy, Physics, Chemistry, Math, Nuclear, Electrical, Mechanical, Civil, Electronics, Computer Science, Environmental, Chemical, Architectural, Structural. (A four-year bachelor of Engineering Technology degree is not considered an automatic equivalent for a B.S. degree in Engineering. A review of the degree program curriculum must be completed by Engineering department management.)
Arizona Public Service

Arizona Public Service

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Arizona Public Service (APS) provides electric service to about 1.2 million customers across 11 of Arizona’s 15 counties, making it the state’s largest utility. It delivers power as a regulated utility, supported by a long history since 1886 and a focus on reliability, customer service, and responsible growth. How it works: APS generates and purchases electricity and distributes it through the electrical grid to homes and businesses, balancing price and service to meet demand. Its products are standard electricity plans and related services for residential, commercial, and industrial customers. Why it stands out: APS emphasizes accountability, safety, integrity, trust, and respect in its operations, with a stated goal of creating a sustainable energy future for Arizona and improving customer value and shareholder return. Its competitive edge comes from its scale, local presence, and commitment to steady service, safety, and sustainable energy planning in a fast-growing state.

Company Size

1,001-5,000

Company Stage

Debt Financing

Total Funding

$1.9B

Headquarters

Phoenix, Arizona

Founded

1886

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Simplify Jobs

Simplify's Take

What believers are saying

  • Cholla gas conversion avoids $1.9 billion coal upgrade cost deemed infeasible for ratepayers.
  • Natural gas capacity supports growing data center demand while maintaining grid reliability.
  • DOE loan enables clean energy growth alongside flexible gas resources for future demand.

What critics are saying

  • Trump-backed GOP candidate Ralph Heap challenges ACC commissioners, threatening Cholla gas plan reversal.
  • Four Corners retirement by 2031 creates baseload gap Cholla's 380 MW cannot fully fill.
  • Permitting delays at Cholla risk 2029 in-service date, capacity shortfall, and cost overruns.

What makes Arizona Public Service unique

  • APS converts Cholla coal plant to 380 MW natural gas by 2029 using existing infrastructure.
  • APS secured $1.8 billion DOE loan for solar, battery storage, and transmission expansion.
  • APS deployed AI wildfire cameras and partners nationally on coal-to-gas conversion projects.

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Benefits

Hybrid Work Options

Growth & Insights and Company News

Headcount

6 month growth

1%

1 year growth

1%

2 year growth

1%
KJZZ
Jul 14th, 2026
Trump, Arizona and coal: Why 2 Republican utility regulators are facing a challenge from the right.

Trump, Arizona and coal: Why 2 Republican utility regulators are facing a challenge from the right. Published July 14, 2026 at 5:00 AM MST The two Republicans seeking re-election to the Arizona Corporation Commission are running on a platform of "promises made, promises kept," saying they've fought to implement conservative policies at the agency that regulates most of the state's utilities. But they're facing a challenge from the far right by critics, bolstered by President Donald Trump, who claim they haven't done enough to keep coal power plants running in Arizona. Since the beginning of his second term, Trump has tried to boost the nation's coal industry by issuing executive orders and making public calls to reopen shuttered coal plants. "To that end, I'm also instructing Secretary (of Energy Chris) Wright to save the Cholla coal plant in Arizona, which has been slated for destruction," Trump said last spring. "We're going to keep those coal miners on the job." He made those comments after Arizona Public Service shut down the Cholla plant in Navajo County, because it could no longer meet emissions standards put in place under former President Barack Obama that were designed to reduce emissions and pollution produced by the facility. Trump's comments resonated with hardcore Republican voters, even though coal now makes up a relatively small chunk of Arizona's energy portfolio, which is dominated by natural gas and nuclear power. "Most people have come up to me about the Cholla project," Jan Shank, vice president of Sun City Grand Republican Club, told KJZZ after a debate hosted by the group in May. "That's driven everybody crazy, because they don't understand why it was closed and why we can't bring it back," Shank said. "And the other side says we can't spend all of this money." 'The math don't math' Commissioners Kevin Thompson and Nick Myers, who are both seeking re-election, say that reopening Cholla as a coal plant doesn't make financial sense, an argument they made directly to White House officials following Trump's comments. "We talked to the White House and said, unless you have some type of grant funding or some dollars that you can send to Arizona to help offset our cost, I can't, as a commission we can't, put $1.9 billion on the backs of 1.4 million ratepayers for APS," Thompson, a former gas industry lobbyist, said. "The math don't math." Thompson said the White House agreed with that logic, even though Trump never publicly acknowledged it. "I think things would have went a lot better if the administration would have talked to the state regulators, or even to the utilities, and said, 'Hey, where are you at with your coal plants across Arizona, or what's going on with your generation across Arizona?' before you just make a blatant remark about keeping coal plants open that have closed," he said. APS announced this month it will instead turn Cholla into a natural gas plant, a proposal Thompson and Myers told KJZZ they were discussing with the utility back in May. But the president's public position on Cholla is already a central part of Republican state lawmaker Ralph Heap's campaign as he seeks to oust Thompson or Myers in the GOP primary. "Coal gives us the base load power that we need," Heap said last year when he launched his campaign alongside former lawmaker David Marshall, who has since dropped out of the Corporation Commission race to become the Navajo County recorder. "And so I think it is a major deal to close down a coal plant when you don't really have anything in position to make up for the energy that's going to be lost," Heap said. In reality, Arizona has never been less reliant on coal. But that hasn't stopped Heap from trying to blame Thompson and Myers for coal's decline. Since entering the race with backing from far-right groups like the Arizona Free Enterprise Club and Turning Point Action, he's accused them of buying into the "Green New Deal," shorthand for pro-renewable energy policies mostly backed by Democrats. "Our utilities are going down with the Green New Deal. From 2020 to now, they've steadily gone down this road," Heap said at the May debate in Sun City. But Heap claims those alleged ties to the Green New Deal are leading to higher energy costs in Arizona, where the state's major utilities are seeking double-digit rate hikes for the second time in the past few years. "What do they pay for utilities in Europe? They pay triple what we pay," Heap said at the Sun City debate. "Why? Because they're totally done - the Green New Deal. Your rates are going up. Why? Because we're going down that same road." Myers and Thompson, who have both served as commission chair over the past four years, say that criticism isn't based in reality, citing their voting record. "When you don't have something to run on and you don't have successes to run on, then you make stuff up to make your opponent look bad," Thompson said. They point to their efforts to repeal renewable energy requirements and energy efficiency rules for the state's utilities, which they argue saddle customers with unjust costs and surcharges - votes some of their critics say undermine common-sense solutions that help combat climate change while actually saving ratepayers money. All of the above. Myers and Thompson have long said they support an "all of the above" approach to meeting Arizona's energy needs, which continue to grow alongside the state's population and booming data center industry. That means backing a diverse energy portfolio that includes gas, nuclear and renewables like solar. Their critics on the left, however, call that lip service, saying under Thompson and Myers leadership the all-Republican commission continues to undermine efforts to boost renewables while championing projects like Cholla and a new $5 billion pipeline to deliver gas from Texas. "It's hilarious that on one side of the political aisle we are accused of being anti-solar and anti-renewable, right?" Myers said. "On the other side, we're being accused of being pro solar and pro renewable." The incumbents' messaging is resonating with some Republicans. "They were making an effort to ferret out the excesses and do away with them, so they were very diligent about that and I support them," said Mesa resident James Reading, who heard Myers and Thompson speak at a local Republican party meeting. Ultimately, it will be Republican voters like Reading and Shank in Sun City who decide which two Republicans to send to the general election. More election news

Arizona Technology Council
Jul 8th, 2025
APS Partnership Launches Battery Storage Project

APS partnership launches battery Storage Project.

Daily Courier
Apr 30th, 2025
APS presents the Prescott chamber's Community Pulse Event: A Morning of Insight and Connection

The Prescott Chamber of Commerce is pleased to announce the next Community Pulse event, presented by APS (Arizona Public Service), 8 to 10 a.m. Friday, May 9, 2025, at The Center, 1280 E. Rosser St., Prescott.

City of Flagstaff Economic Development
Apr 15th, 2025
APS was recently named to Newsweek's 2024 list of Most Trustworthy Companies

Arizona Public Service (APS) was recently named to Newsweek's 2024 list of Most Trustworthy Companies in America.

Grand Canyon Times
Mar 25th, 2025
APS implements AI cameras for enhanced wildfire detection

Arizona Public Service (APS) has introduced new artificial intelligence (AI) fire-sensing cameras to enhance early wildfire detection and improve emergency response.