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Powered by emerging technologies and efficient manufacturing practices, Associated Environmental Systems (AES) is a leader in the environmental test chamber industry.

Our test chambers enable innovative companies to create specified conditions in a controlled and confined space—driving research, development, and the manufacturing of products used every day.

At AES, we’re proud to engineer next-generation technology, provide dependable service that keeps chambers running for 10 years or more, and deliver a customer experience rooted in real human connection. When you contact us, you’ll always reach a person—because we’re committed to doing right by our customers.

If you’re looking to join a creative, fast-paced environment and contribute to world-changing innovations in a welcoming, friendly atmosphere, apply today.

➡️ Meet some of the faces behind AES and take a look inside our new North Chelmsford headquarters in the video alongside this section.

 

OUR PURPOSE

At AES, we strive to help our customers make their products stronger, faster, safer, and longer-lasting. Our employees and clients alike count on us for the following: 

Creativity

Each department at AES approaches challenges with a creative mindset. We seek to find solutions that exceed expectations and push the company forward. Collaboration with each other and our customers is key to driving this creativity.

Dependability

The AES logo represents all of the hard work that goes into our services. When you see it, know the entire team is behind the project to support its success.

Efficiency

We optimize our operations to create a safe work environment and reduce lead times for test chamber orders.

Integrity

Integrity is at the forefront of AES's operation. We respect and guard all customer-desired confidentiality. AES policies assure our customers that both quality and social standards are met and maintained.

LIFE AT AES

Headquartered in the woods of Acton, MA, AES has two strategically located offices in Michigan and California’s Bay Area. 

We’re deliberate in fostering a culture where we look forward to coming to work every day. Our main location offers hiking trails, a basketball court, and a gated dog park—yes, we’re dog-friendly.

AES blends this warm and friendly environment with an electric dedication to our craft. Our skill sets are as wide-ranging as our team members’ diverse backgrounds, empowering an inventive culture made possible by the productive tensions between cooperation and divergent viewpoints. This approach has forged AES into the industry leader it is today.

EMPLOYEE TESTIMONIALS

BENEFITS

 

Benefits

  • 401K Plan
  • Paid Vacation
  • Paid Sick Time
  • Paid Holidays
  • Tuition Reimbursement
  • Leadership Development Program
  • Intern Program

Medical Care

  • Medical PPO or HMO
  • Dental
  • Eye Care
  • ST Disability
  • LT Disability
  • Life Insurance
  • Travel Assistance Program
  • Accident Insurance

dog icon

Perks at Work

  • Dog friendly with a dog park on-site
  • Casual dress code
  • EV charging station
  • Social events
  • On-site barber brought in once a month
  • Biweekly Free Lunch Fridays
  • Basketball

CURRENT OPENINGS

Can you see yourself working at AES? Check out  the full list of job openings on LinkedIn, and Indeed. Apply directly through those platforms.

We have an opportunity for an ambitious, self motivated person to join our forward thinking team as an Electrical Engineer. In this role you will be the primary point of contact between electrical and engineering; assisting both our standard production line and our custom team, where needed. Your contribution will be pivotal in ensuring projects hit all timing and fiscal benchmarks. You will be expected to develop designs, propose solutions, and generate BOM’s, accurately and efficiently. In this role you will have the opportunity to work on some very interesting projects for industry leading clients. This will all be accomplished with the latest technology and the full support of engineering, manufacturing, and service.

Who we are

We are an innovative manufacturing company that focuses on growth and technology and enjoys having fun along the way. We have built an extensive and loyal customer base spanning aerospace, electronics, and automotive with significant involvement in the global expansion of the battery industry. We work with many of the major tech companies as well as brands such as Tesla, Rivian, Lucid, Meta, Google, and Harley Davidson.

 

Primary responsibilities

  • Perform calculations related to control panel design including power distribution. Experience performing and documenting Electrical Load Analyses (ELAs) on single, dual and 3 phase applications.
  • Develop solutions aimed at increased efficiency and repeatability.
  • Develop and iterate on control panel and electrical device layouts.
  • Create all wiring diagrams in Solidworks electrical, following all ANSI & IEC standards.
  • Generate and execute engineering change orders.
  • Generate Bill of Material that satisfies customer specifications and system specifics
  • Create and maintain work procedures.
  • Ensure compliance with all IEC, NEC, CE, and, IPC requirements, including UL 508A & UL 610101.
  • Troubleshoot existing designs and develop creative improvements for efficiency and surge capability, along with testing and manufacturing throughput.
  • Assist in debugging field wiring issues with electricians.
  • Define electrical components to be used in an electrical control system.
  • Review and comment on supplier data as required.
  • Designing alternative and/or replacement parts for existing equipment.
  • Working with purchasing for part availability and cost.

 

Skills

  • Knowledge of 2D CAD software is required, SolidWorks Electrical strongly preferred
  • Knowledge of industrial control systems, required.
  • Knowledge of electrical wiring troubleshooting, required.
  • Five or more years of Electrical Engineering experience, required
  • A four year degree in Electrical/Mechanical Engineering, preferred.
  • Five or more years of designing schematics for electrical control panels, preferred.
  • Wire Harness Design experience, preferred.
  • Knowledge of electrical codes including NFPA 79, NEC, and UL 61010 / UL 508A, preferred.
  • Good mechanical aptitude and knowledge, required.
  • Great communication skills, required
  • Great attention to detail, required
  • Familiarity with current electrical engineering trends.
  • An innovative mindset and positive attitude.

 

What do we offer:

  • A truly collaborative environment with a Senior Management Team that helps to shape the future of the Company.
  • Competitive salary and benefits.
  • Tuition reimbursement.
  • A casual dog friendly work environment with a small company atmosphere! Check out our website and facebook for a look at our company culture and our four legged team members.

*Associated Environmental Systems is proud to be an Equal Opportunity Employer. We celebrate diversity and are committed to creating a welcoming and inclusive environment for all.

*Applicants must have the ability to work permanently in the United States without sponsorship, now and in the future.

APPLY ON LINKEDIN

Drive Innovation. Model with Precision. Build the Future.

 

We’re looking for an expert-level Senior/Chief Mechanical Engineer to serve as the highest technical authority in mechanical design at Associated Environmental Systems (AES). In this role, you will own the mechanical release process, sheet metal design, and CAD ecosystem while collaborating closely with refrigeration and electrical engineers. You’ll lead critical projects, elevate standards, and mentor others — shaping the future of AES’s product line for top-tier clients like Tesla, Rivian, Lucid, Meta, Google, and Harley-Davidson.

 

Who We Are

AES is a fast-growing, innovative manufacturing company at the intersection of technology, engineering, and sustainability. Our environmental test chambers support aerospace, automotive, battery development, and electronics industries worldwide. We foster a collaborative, fun, and dog-friendly culture where talented people build what’s next using the latest tools and strong internal standards.

 

The Opportunity

As AES’s chief mechanical engineering authority, you will:

  • Lead design and release of complex, custom, and high-visibility projects.
  • Ensure accuracy, manufacturability, and compliance of mechanical deliverables.
  • Provide expert guidance in sheet metal design and CAD standards.
  • Own CAD libraries, templates, automation, and training across engineering.
  • Review and sign off on DFMEAs, FEA, CFD, and tolerance stack-ups.
  • Evolve Methods of Manufacture to support lean, accurate production.

 

Primary Responsibilities

Mechanical Design & Engineering Releases (≈70%)

  • Engineer and 3D model sheet metal structures and assemblies in SolidWorks 2021/24 (expert-level).
  • Integrate refrigeration and electrical components into assemblies for complete designs.
  • Develop clean, parametric drawings compliant with ASME and AES standards.
  • Generate BOMs collaboratively across disciplines, ensuring lean accuracy.
  • Create and manage laser files in Lantek Expert.
  • Execute ECOs with strict attention to documentation and version control.
  • Peer review CAD models and drawings to drive consistency and manufacturability.

Methods of Manufacture & Engineering Sign-Off (≈20%)

  • Maintain and update AES’s Methods of Manufacture database for mechanical scope.
  • Conduct and review DFMEA, FEA, CFD, and tolerance stack-ups.
  • Serve as the mechanical sign-off authority on Tier 2+ projects.
  • Provide solutions for schedule/resource conflicts while leaving final scheduling with PMs.

CAD Systems Architect (≈10%)

  • Own AES’s CAD ecosystem: libraries, templates, macros, and automation.
  • Drive CAD efficiency improvements that reduce design time and rework.
  • Train and mentor mechanical engineers in advanced SolidWorks and sheet metal practices.

 

What You Bring

Must-Have Skills

  • Expert-level SolidWorks (7+ years), with mastery of Sheet Metal and PDM.
  • Proven ability to model fast, clean, and parametric with strong structure and naming discipline.
  • Experience with design for manufacturing and assembly (DFMA) in sheet metal.
  • Strong understanding of heat transfer concepts and how design impacts thermal performance.
  • Working knowledge of refrigeration and electrical component layout principles.
  • Attention to detail: models and drawings should be as clear as your communication.
  • Excellent cross-disciplinary collaboration skills.
  • Creative, solutions-first mindset.

Preferred

  • Bachelor’s degree in Mechanical Engineering.
  • Hands-on experience with environmental systems, refrigeration cycles, or thermal management products.

Performance Metrics

  • % error-free mechanical releases.
  • Reduction in mechanical release cycle time.
  • Adoption of updated Methods of Manufacture.
  • CAD throughput and rework reduction.

 

Why AES?

  • Influence: Work directly with leadership and shape AES’s product line.
  • Tools: SolidWorks 2021/24, Lantek Expert, Google Suite, and refined internal standards.
  • Culture: Collaborative, casual, low-ego, high-talent — and dog-friendly.
  • Perks: Competitive salary, great benefits, tuition reimbursement, and projects for major tech brands.

Applicants must have the ability to work permanently in the U.S. without sponsorship, now or in the future.

APPLY ON LINKEDIN

Don't see the position that's right for you?

Call us at  (978-772-0022) At AES, we value talent and growth-oriented people.  We would love to meet you, and we might be able to work something out.

FAQs

What are the steps of the recruiting process?

We start by posting any open positions on our company website with links to apply on Indeed and LinkedIn. Once we have received your resume, you will be contacted by the People Operation Director to get to know you better and give you an overview of the position. Once we feel the role would be a good fit, we invite you to tour our facility and meet the team.


How should I dress for my interviews?

We are a pretty casual group. We don’t even have an official dress code. Instead, we encourage you to be yourself and wear whatever you’re comfortable with. Jeans, dresses, skirts, slacks—whatever you like is fine with us. 


I don’t see a job that’s perfect for me right now. How can I share my resume or contact information?

At AES, we value talent and growth-oriented people. Reach out to us. We would love to meet you, and we might be able to work something out.


I submitted my application but haven’t heard back. What is the status of my application?

Usually, if you are still waiting to hear, the process might have gotten delayed. You can always reach out to us anytime!


What are some of the ways AES focuses on team development? 

We do a lot to develop our talented individuals into a fully-fledged team. On your first day, you receive a schedule and get to shadow or meet one-on-one with key people you will interact with.  Lunch is ordered on your first day so you and your team can sit down and enjoy a casual conversation to get to know each other. We are proud to offer leadership development programs, and many team members have moved into supervisory and management positions after starting on the manufacturing floor.

CONTACT US

We try to be just as responsive to potential employees as we are to our customers. Please, don’t hesitate to reach out if you have any further questions. We’re happy to help.

You can call us at 978-707-6721 or leave a message, if outside normal business hours. You can also email us at support@associatedenvironmentalsystems.com.