Greg Gisoni: Nuclear Engineer, Husband of Melissa Gisoni, and Proud Stepfather
Greg Gisoni is a name that carries weight in two very different worlds. In the nuclear energy industry, he is a seasoned executive who spent decades at Westinghouse Electric Company, contributing to some of the most technically demanding projects in American energy infrastructure. In the world of popular culture, he is best recognized as the husband of Melissa Gisoni — a central figure on the reality TV sensation Dance Moms — and the stepfather of global dance superstars Maddie Ziegler and Mackenzie Ziegler.
This profile covers everything you need to know about Greg Gisoni: his early life and education, his distinguished engineering career, his marriage to Melissa, his blended family, and his estimated net worth.
| Detail | Information |
|---|---|
| Full Name | Gregory “Greg” Gisoni |
| Date of Birth | August 12, 1958 |
| Nationality | American (Italian-American heritage) |
| Hometown | Murrysville, Pennsylvania, USA |
| High School | Penn Hills High School |
| Education | Bachelor’s & Master’s in Electrical Engineering, University of Pittsburgh |
| Profession | Nuclear Engineer; Former VP & Project Director, Westinghouse Energy Center |
| Westinghouse Tenure | Since approximately 2000 (VP role from 2012) |
| Spouse | Melissa Gisoni (married July 19, 2013) |
| Biological Children | Mathew Gisoni (son), Michele Gisoni (daughter) |
| Stepchildren | Maddie Ziegler, Mackenzie Ziegler |
| Estimated Net Worth | $2 – $5 Million |
Greg Gisoni Early Life and Education
Gregory Gisoni was born on August 12, 1958, in the United States, to an Italian-American family. He grew up in the Pittsburgh area and attended Penn Hills High School, where his aptitude for mathematics and science began to set him apart from his peers.
After high school, Greg pursued his passion for engineering at the University of Pittsburgh, one of the most respected research universities in Pennsylvania. He earned both a bachelor’s degree and a master’s degree in electrical engineering from the institution — a dual-degree foundation that would serve as the launchpad for a decades-long career at the highest levels of the nuclear energy industry.
His Italian-American roots and his upbringing in Pennsylvania steel-and-energy country likely played a quiet role in shaping his interest in industrial and engineering careers. The Pittsburgh region has long been intertwined with American energy and manufacturing, and Greg’s career trajectory is very much a product of that environment.
Greg Gisoni Professional Career at Westinghouse
Greg Gisoni has built one of the most quietly impressive careers in American nuclear engineering. His work at Westinghouse Electric Company — a global leader in nuclear energy technology and one of the most important energy firms in US history — spans more than two decades of senior-level leadership.
Early Technical Contributions and Patent
Greg’s technical career at Westinghouse began well before his senior management roles. An early indicator of his engineering depth is his credit as a co-inventor on US Patent No. 5,005,017, granted in 1991, for a “multiple pulse delay processor” — a Westinghouse patent related to electronics and signal processing. Being listed as a co-inventor on a patented technology in the early years of one’s career speaks to the kind of hands-on technical excellence that Greg brought to his work long before he entered executive leadership.
In the years that followed, Greg moved through Westinghouse’s engineering ranks steadily, developing expertise in control and instrumentation systems within nuclear plants — some of the most safety-critical engineering environments in the world.
Director of Engineering and Operations Leadership
As his career progressed into the 2000s, Greg took on increasingly senior leadership roles within Westinghouse. He served as Director of Engineering for Nuclear Automation, overseeing teams responsible for the design and implementation of automated control systems within nuclear facilities. This role required not only deep technical knowledge but also the ability to manage large, multidisciplinary engineering teams working under strict regulatory and safety requirements.
He also held the position of Vice President of Operations Delivery in Nuclear Services, a role that placed him at the intersection of engineering leadership and large-scale project execution. Under his management, Westinghouse’s teams completed major milestones in nuclear plant design and equipment qualification.
Vice President and Project Director, Westinghouse Energy Center
Since 2012, Greg Gisoni has served as Vice President and Project Director at Westinghouse Energy Center, with responsibilities covering New Plants Engineering, Equipment, and Major Projects. In this capacity, he has overseen the development, design, and construction of advanced nuclear reactors — projects that require extraordinary precision and carry enormous implications for the US energy grid.
Westinghouse’s work in building next-generation nuclear plants is considered a cornerstone of America’s long-term clean energy strategy, and Greg’s role at the helm of major projects places him among the engineers who have meaningfully shaped that future. More recent reports from 2024 suggest that Greg may have stepped back from active corporate leadership — a likely reflection of his long and accomplished career winding toward retirement.
Greg Gisoni Marriage to Melissa Gisoni
Greg Gisoni’s public profile changed significantly when he married Melissa Gisoni on July 19, 2013. The couple held a private wedding ceremony in Florida and celebrated with a honeymoon in Vietnam. For Melissa, the marriage to Greg was her second — her first marriage had been to Kurt Ziegler, with whom she shares her two daughters, Maddie and Mackenzie. Melissa and Kurt divorced in 2011, after which Melissa was awarded custody of the girls.
Greg and Melissa’s relationship has been characterized by mutual respect and a commitment to family. While Melissa’s world was largely public — cameras, competitions, and millions of viewers — Greg brought a grounded, private steadiness to the partnership. The couple has remained married for over a decade and is frequently described as a strong and stable unit.
Greg Gisoni Children and Blended Family
Greg Gisoni came into his marriage with Melissa already a father. He has two biological children from a previous relationship: a son named Mathew Gisoni and a daughter named Michele Gisoni. Together with Melissa’s daughters Maddie and Mackenzie Ziegler, the Gisoni household became a blended family of four children.
Greg stepped into the role of stepfather to Maddie and Mackenzie with evident warmth and care. While the girls’ biological father is Kurt Ziegler, Greg has been an important presence in their lives throughout their rise to international fame. Melissa’s sister, Renee Burkey, is Greg’s sister-in-law, further extending the family network that Greg became a part of when he married Melissa.
Stepdaughters: Maddie and Mackenzie Ziegler
Although Greg himself avoids the public spotlight, his stepdaughters are among the most recognized young entertainers on the planet. Maddie Ziegler rose to international prominence through Dance Moms and her iconic collaborations with pop star Sia, most notably in the music video for “Chandelier,” which has accumulated hundreds of millions of views on YouTube. She has since built a career that spans acting, modeling, and brand partnerships.
Mackenzie Ziegler, the younger of the two sisters, has carved out her own formidable career as a singer, actress, and social media influencer with tens of millions of followers across platforms. Together, the Ziegler sisters represent one of the most successful sibling duos to emerge from reality television.
Greg’s role in their story — while rarely discussed publicly — has been one of quiet, consistent support, offering a stable family environment during one of the most remarkable rises to fame in recent entertainment history.
Greg Gisoni Net Worth
Given his long tenure as a senior executive in one of the most specialized and well-compensated engineering fields in the United States, Greg Gisoni has accumulated considerable wealth. Estimates of Greg Gisoni’s net worth range between $2 million and $5 million, derived primarily from his executive compensation at Westinghouse over the course of more than two decades in senior roles.
Vice Presidents at major nuclear engineering companies typically earn between $150,000 and $300,000 annually in base salary, with additional compensation through bonuses, stock options, and benefits — meaning Greg’s career earnings over 20-plus years at this level would comfortably support a net worth in this range.
Melissa Gisoni’s estimated net worth stands at approximately $2 million, earned through her years on Dance Moms and related entertainment pursuits. The family also reportedly holds strategic real estate investments, which further contribute to their combined financial standing.
It is worth noting that net worth figures for private individuals like Greg are inherently approximate. He has never publicly disclosed his finances, and all estimates are derived from career benchmarks and industry standards rather than confirmed figures.
Greg Gisoni Away from the Spotlight
One of the most consistent aspects of Greg Gisoni’s public persona — to the extent that he has one — is his deliberate avoidance of it. In a family where Melissa was a reality TV personality, Maddie is a global star, and Mackenzie has millions of social media followers, Greg has remained resolutely private. He has an Instagram account but maintains it away from public attention.
This is not unusual for someone whose career was spent in the world of nuclear engineering, where precision, confidentiality, and technical rigor are far more valued than public recognition. Greg’s professional identity is built on the substance of his work — patents, reactor projects, executive leadership — rather than fame or media presence.
His story is, in many ways, the story of a man who built something meaningful and durable in two distinct areas of life: a career that contributed to the future of clean energy, and a family that has remained grounded despite extraordinary public pressures.
Frequently Asked Questions About Greg Gisoni
Who is Greg Gisoni?
Greg Gisoni is an American nuclear engineer and former Vice President and Project Director at Westinghouse Energy Center. He is widely known as the husband of Dance Moms personality Melissa Gisoni and the stepfather of Maddie Ziegler and Mackenzie Ziegler.
When was Greg Gisoni born?
Greg Gisoni was born on August 12, 1958. He grew up in the Pittsburgh, Pennsylvania area and attended Penn Hills High School before going on to the University of Pittsburgh.
What does Greg Gisoni do for a living?
Greg Gisoni spent his career as a nuclear engineer and senior executive at Westinghouse Electric Company. From 2012 he served as Vice President and Project Director at Westinghouse Energy Center, overseeing major nuclear plant engineering and construction projects. More recent reports suggest he has stepped back from active leadership, possibly into retirement.
When and where did Greg Gisoni marry Melissa?
Greg Gisoni married Melissa Gisoni on July 19, 2013, in a private ceremony held in Florida. The couple honeymooned in Vietnam.
Does Greg Gisoni have biological children?
Yes. Greg Gisoni has two biological children from a previous relationship — a son named Mathew Gisoni and a daughter named Michele Gisoni. He is also the stepfather of Maddie Ziegler and Mackenzie Ziegler.
What is Greg Gisoni’s net worth?
Greg Gisoni’s net worth is estimated between $2 million and $5 million. His wealth comes primarily from his long and successful career as a senior nuclear engineering executive at Westinghouse Electric Company.
Where did Greg Gisoni go to college?
Greg Gisoni earned both a bachelor’s degree and a master’s degree in electrical engineering from the University of Pittsburgh.
Did Greg Gisoni appear on Dance Moms?
Greg Gisoni made occasional background appearances connected to his wife Melissa’s involvement on Dance Moms but was never a cast member or regular presence on the show.
What is Greg Gisoni’s relationship with Maddie and Mackenzie Ziegler?
Greg Gisoni is the stepfather of Maddie Ziegler and Mackenzie Ziegler. The girls are the biological daughters of Melissa Gisoni and her first husband, Kurt Ziegler. Greg has been a supportive parental figure to both daughters throughout their rise to fame.
Does Greg Gisoni have a patent?
Yes. Greg Gisoni is credited as a co-inventor on US Patent No. 5,005,017, granted in 1991, for a “multiple pulse delay processor” — a Westinghouse patent related to electronics and signal processing in nuclear systems.