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View Tethys Engineering LLC's top competitors like Aqua Environmental, Aquatic Informatics, and Clinical Trial Services.

Tetra Tech
Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide. With more than 25,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science® to address the entire water cycle, protect and restore the environment, and design sustainable and resilient infrastructure. Tetra Tech est un chef de file mondial dans les domaines de l'eau, de l'environnement et des infrastructures durables, offrant des services techniques et d'ingénierie de qualité supérieure pour des projets à l'échelle mondiale. Grâce à ses 25 000 employés, Tetra Tech propose des solutions optimales aux problèmes les plus complexes en utilisant la science d’abord pour répondre aux besoins en matière de cycle de l'eau, en protection et restauration de l'environnement ainsi qu’en conception d’infrastructures durables et résilientes.
Pasadena, California, US
Public
$2.8B Revenue
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27.5K Employees
TTEK Ticker
Xylem
Xylem is the global leader in advanced technologies, solutions and services that address the world’s biggest water challenges. We enable our customers to dramatically improve the way water and wastewater is used, managed, conserved, re-used and returned to nature. At every level, our global team is committed to access, equity, inclusion, and diversity. Our goal is for all our colleagues to be involved, respected, valued, connected, and free to bring their authentic selves and ideas. If you are excited and passionate about solving water, we want to hear from you. #LetsSolveWater
Washington, District of Columbia, US
Public
$8.4B Revenue
https://www.xylem.com/
19.4K Employees
XYL Ticker
The AES Corporation
The world no longer thinks of energy as a matter of supply and demand. Now it’s a space for innovation and partnership. With this transformation comes a responsibility to work with a smarter approach, new thinking informed by past experiences, and with stronger collaboration between regulators and innovators, old systems and new technologies. At AES, we partner with our organizations from industries of every kind, across all markets and at every stage of development, and we’ve been doing it for decades. We know that every organization is at a unique place in their energy journey. A one-size fits all approach using outdated technology isn’t going to cut it. When you work with AES, you can expect to work in partnership with us to create innovative, customized energy solutions that deliver the most value to you and your energy goals while empowering the growth of your business. Want to join us? We’re looking for people to join us on that journey and care more about who you are than what’s on your resumé. Coming from all walks of life, our people share a passion for improving lives by improving the energy sector through innovation, collaboration and action. At AES, we invest in your development and empower you to continuously improve because we know when you’re at your best, that’s when we’ll make the greatest impact. We are AES. Come join us, and let’s accelerate the future of energy, together. Join our team of innovators at: www.aes.com/careers
Arlington, Virginia, US
Public
$12.3B Revenue
http://www.aes.com
5.9K Employees
AES Ticker
G2 Leader Summer 2026 G2 Best Est ROI Mid-Market Summer 2026 G2 Easiest Admin Mid-Market Summer 2026 G2 Most Implementable Summer 2026 G2 Best Results Mid-Market Summer 2026 G2 Lead Capture Mid-Market Summer 2026 Inc Fastest Growing Private Companies 2026 Inc Best Workplace 2026
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