These Houston startups and companies clock in as the top employers in the U.S.

best of the rest

MD Anderson Cancer Center is a top place to work in the U.S. and Texas. Photo by F. Carter Smith/courtesy of MD Anderson

Whose boss is doing something right in Houston? Forbes set out to find out.

New rankings from Forbes identified the top employers in Houston and beyond, and that included both bigger companies and the country’s best startup employers. In Houston, the startups ranked as top employers are:

No. 120 — Imbuit
No. 310 — Code Ninjas (Pearland)
No. 353 — Axiom Space
No. 462 — Liongard

When it comes to more traditional businesses, Dr. Pete Pisters, CEO of MD Anderson Cancer Center, continues his reign. He was named a top boss in 2021. Now, the cancer treatment facility/research center he leads has been named one of the best employers in a new report.

MD Anderson Cancer Center ranked No. 10 among the country’s best large employers in the country. Staffing some 22,000 employees, the world-renowned cancer center also landed at No. 25 in Forbes list of America's Best Employers in 2021.

Other Houston-area companies on the list include: Houston Methodist (No. 37), Waste Management (No. 245), Sysco (No. 314), Shell Oil (no. 361), Halliburton (No. 389), Schlumberger (No. 403), ExxonMobil (No. 440), and BP (No. 487).

Other Texas employers ranked among the best large employers in the U.S. are:

  • No. 10 — MD Anderson Cancer Center, Houston
  • No. 37 — Houston Methodist, Houston
  • No. 38 — H-E-B, San Antonio
  • No. 135 — USAA, San Antonio
  • No. 140 — Keller Williams Realty, Austin
  • No. 143 — Dell Technologies, Round Rock
  • No. 214 — Texas Tech University, Lubbock
  • No. 245 — Waste Management, Houston
  • No. 279 — University of Texas at Austin
  • No. 314 — Sysco, Houston
  • No. 318 — Daikin Industries, Waller (North American operations hub for manufacturing, marketing, research, R&D, and customer support)
  • No. 324 — Whole Foods Market, Austin
  • No. 361 — Shell Oil, Houston
  • No. 389 — Halliburton, Houston
  • No. 403 — Schlumberger, Houston
  • No. 440 — ExxonMobil, Houston
  • No. 487 — BP, Houston (North American headquarters)

Elsewhere in Texas, Dallas reigns as the capital of Texas when it comes to the best big and small employers, according to Forbes, which put University of Texas Southwestern Medical Center in Dallas at No. 9 among the country’s best large employers in the country and Dallas-based life insurance platform Bestow at No. 16 among the country’s best startup employers.

UT Southwestern isn’t the only Dallas-Fort Worth employer to pop up on the Forbes list of the best large employers. Richardson-based software company RealPage sits at No. 49; Dallas-based Southwest Airlines, No. 56; Plano-based Toyota North America, No. 253; Plano-based Cinemark, No. 370; Dallas-based Jacobs, No. 375; Dallas-based Topgolf, No. 394; Dallas-based Primoris Services, No. 399; Irving-based Fluor, No. 422; Dallas-based CBRE, No. 423; Irving-based McKesson, No. 429; Fort Worth-based American Airlines, No. 446; and Plano-based Keurig Dr Pepper, No. 483.

Dallas-based software company Slync.io, holding the No. 290 spot for best startups.

What follows are the other Texas employers ranked among the best startup employers in the country.

Austin

No. 104 — Apty
No. 121 — Homeward
No. 169 — SparkCognition
No. 186 — Outdoor Voices
No. 255 — Outdoorsy
No. 323 — ICON
No. 324 — The Zebra
No. 330 — TrustRadius
No. 335 — Innovetive Petcare (Cedar Park)
No. 387 — AlertMedia
No. 400 — Iris Telehealth
No. 410 — Wheel
No. 455 — Billd
No. 460 — Aceable
No. 470 — Shipwell

Forbes teamed up with data and research company Statista to develop the rankings of the best large employers and best startup employers.

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Rice University breaks ground on new innovation hub, The Arc

breaking ground

Construction is officially underway on Rice University's The Arc in Houston’s Ion District.

The university broke ground on the 200,000-square-foot research, corporate innovation and office building on Nov. 4. The facility will share a plaza with the existing Ion building, fostering collaboration within the innovation space, according to Rice.

“The Arc will bring Rice’s extraordinary research and talent and Houston’s impactful innovation ecosystem into even closer connection with the industries and innovators working to solve some of the world’s most consequential challenges,” Rice President Reginald DesRoches said in an announcement. “That constant exchange of ideas and expertise will help move discoveries more rapidly from the laboratory to real-world impact.”

Construction is scheduled to be completed by Q2 2028. Rice Real Estate Co. is developing the project, and Rice University will occupy about 80,000 square feet in the building (about 40 percent). Preleasing has begun, with floor plans ranging from 28,000 to 31,000 square feet.

The Arc will feature conference and meeting spaces, an amenity lounge, fitness center, outdoor plazas, underground parking, and on-site retail and dining, according to the release.

It aims to host tenants focused on artificial intelligence and machine learning, data science, robotics, quantum science and engineering and energy, including Rice's new AI Foundry.

Rice says the AI Foundry will be a space where university experts and partners can support organizations with AI challenges. Rice recently committed to hiring 75 new AI-focused faculty and announced plans to launch a new Master of Artificial Intelligence (MAI) next fall.

“The AI Foundry is exactly the kind of collaboration the Arc is designed to enable,” Amy Dittmar, the Howard R. Hughes Provost and executive vice president for academic affairs at Rice, added in the release. “By bringing Rice researchers together with industry partners in a shared environment, we can accelerate the movement of ideas from research into practical applications while helping organizations build the capabilities they need to succeed as AI continues to evolve.

Developers of The Arc are targeting LEED Gold certification by incorporating smart building automation and energy-saving features into the project's design. Rice first announced the project in September 2025.

Rendering courtesy Bogza

Houston battery tech startup FlowCellutions acquired by Katy energy co.

M&A

Katy-based TerraFlow Energy, an energy storage and infrastructure company, has acquired Houston-based battery technology startup FlowCellutions. Financial terms weren’t disclosed.

FlowCellutions still operates under its established name, but with the tagline “A TerraFlow Energy Company.” Becca Segel, founder and CEO of FlowCellutions, now runs the business as its president.

FlowCellutions specializes in electrochemical sensing, diagnostics, analytics, and testing that offer insights into battery chemistry, charging capabilities, and system performance.

“FlowCellutions has always been focused on developing better ways to understand what is happening inside a flow battery and using that information to improve how these systems perform,” Segal said in a press release. “Joining TerraFlow gives us the opportunity to apply that work at a much larger scale while continuing to build the capabilities and expertise that make FlowCellutions unique.”

The FlowCellutions platform supports data centers and other heavy users of power. It’s designed to help reduce operating costs, prevent failures and costly downtime, and extend battery lifetime from about seven years to more than 30 years.

Segel founded the company in 2022. A member of Greentown Labs, the company raised more than $2 million in non-dilutive funding and received $1.5 million in National Science Foundation funding earlier this year.

FlowCellutions is one of five finalists in the Energy Transition Business category of InnovationMap’s 2026 Houston Innovation Awards.

“FlowCellutions brings a depth of scientific and technical expertise that fits naturally with where TerraFlow is going,” Jon Parrella, CEO of TerraFlow, said in the release.

“As we move from developing these systems to deploying them at commercial scale, understanding performance at a deeper level matters,” he said. “Bringing FlowCellutions into TerraFlow strengthens that capability and gives both teams more opportunity to advance the technology.”TerraFlow, founded in 2024, develops long-duration energy storage and power infrastructure for data centers, industrial facilities, utilities and other large power consumers.

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This article originally appeared on EnergyCapitalHTX.com.

3 fast-growing Houston scaleups named Innovation Awards finalists

meet the finalists

From IPOs to groundbreakings, some of Houston's most innovative companies reached major milestones this year.

As part of the 2026 Houston Innovation Awards, our Scaleup of the Year category honors innovative later-stage startups that have recently reached a significant milestone in company growth. Three scaleups have been named finalists for the 2026 award.

Read more about these businesses, their founders and their breakthrough technologies below. The 2026 winners will be announced on InnovationMap.com in mid-November.

Erock

Energy infrastructure company Erock, previously known as Enchanted Rock, develops dual-purpose microgrids that rely on natural gas and renewable natural gas to produce lower carbon emissions and air pollutants than diesel generators. Its products can provide bridge power before grid interconnection, backup power during outages and dispatchable capacity that supports long-term grid reliability. The company has more than 1,100 megawatts of installed capacity and over 20 years of experience serving commercial, municipal and large-scale technology customers.

Erock completed its initial public offering this year, raising approximately $600 million in gross proceeds. It also grew its contracted power system sales backlog to approximately $1.7 billion, up tenfold year-over-year, with production sold out through 2028, according to the company's application. The company secured a major equipment order from Anthropic, began construction of the 366-megawatt El Paso Electric project supporting Meta's data center campus, and started assembly operations at its Hyperion facility in Cypress, Texas.

Hertha Metals

Hertha Metals produces lower-cost, lower-emission steel and high-purity iron. The company has developed a single-step process that uses natural gas as a direct reductant instead of metallurgical coal, which cuts production costs by more than 25 percent and emissions by up to 50 percent, according to the company. The same process produces high-purity iron needed for high-purity steels and rare earth magnets. The company says it aims to "re-industrialize America’s production of critical materials."

Hertha Metals was founded by CEO Laureen Meroueh in 2022 and emerged from stealth last year with more than $17 million in venture capital funding. The company closed a $133.65 million Series A this month and also broke ground on its $100M high-purity iron factory known as Chalyx in Conroe.

Venus Aerospace

Spacetech company Venus Aerospace is developing a high-thrust rotating detonation rocket engine (RDRE) that replaces the subsonic combustion used in conventional rocket engines. The RDRE is a compact, simpler engine that can deliver up to 15 percent greater efficiency for defense and space applications. It completed its first U.S. flight test of the engine last summer.

Venus Aerospace was founded in 2020 by CEO Cassie Duggleby and CTO Andrew Duggleby. It raised a $20 million Series A in 2022 and $42 million Series A2 in 2025. It closed a $91 million Series B earlier this year and expanded its leadership team. The company is working toward longer-duration and higher-thrust testing and advancing its flight program.

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