Internship

Engineer 1

Process / Mechanical-2, Early Career Development Program

Updated on 7/21/2026

Reworld

Reworld

1,001-5,000 employees

Processes waste into energy and materials

Compensation Overview

$57.4k - $76.4k/yr

Haverhill, MA, USA + 2 more

More locations: Dartmouth, MA, USA | Plymouth, MA, USA

Hybrid

Based in Massachusetts (Rochester or Haverhill); travel around 25%.

Category
Mechanical Engineering (1)
Required Skills
process engineering

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Requirements
  • Bachelor’s degree in Process or Mechanical Engineering.
  • 0-2 years of relevant experience
  • Internship, Co-Op or prior work experience in Mechanical or Process engineering
  • Basic knowledge of how AI tools work in industrial environments
  • Location: SEMASSS location in Rochester, MA or Haverhill location in Haverhill MA

Reworld Waste provides sustainable waste solutions for businesses and communities in North America. Its services include materials processing and waste-to-energy plants, creating value from waste streams by recovering valuable materials and converting non-recyclable waste into energy. The company works with a wide range of clients and offers tailored solutions to manage waste in an environmentally responsible and cost-effective manner. How it works: they process waste streams to extract recyclables and other materials, then convert remaining non-recyclables into energy, using plants and processing facilities to handle different waste types. How it stands out: a focus on turning waste into both materials and energy, with customized solutions for diverse clients across industrial, municipal, and commercial sectors, aligning with circular economy goals. Goal: help clients achieve sustainable waste management by turning waste into resources and energy in a cost-efficient way.

Company Size

1,001-5,000

Company Stage

IPO

Headquarters

Morristown, New Jersey

Founded

1986

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Simplify Jobs

Simplify's Take

What believers are saying

  • ReAssure PFAS service leverages 17M tons capacity to address growing 'forever chemicals' regulatory demand.
  • Acquisition of R.E.D. Technologies adds 36 railcars and 300K tons annual capacity in the Northeast.
  • Board appointment of Mauro Gregorio brings $10B asset-intensive industry leadership to accelerate growth.

What critics are saying

  • Medical waste incineration bid in Tulsa faces 60-75% probability of rejection within 6-12 months due to past violations.
  • PFAS market may saturate by 9-15 months, collapsing ReAssure margins if pricing drops below 1,100°C cost floor.
  • EPA could reclassify thermal PFAS destruction as temporary within 6-24 months, nullifying ReAssure's core value proposition.

What makes Reworld unique

  • Reworld operates 50+ facilities with 17M tons of PFAS destruction capacity at 99% efficiency.
  • Its Thermomechanical Treatment Facilities destroy PFAS above 1,100°C with no meaningful byproducts, validated by EPA.
  • Reworld uniquely combines waste-to-energy, material recycling, and logistics via R.E.D. Technologies acquisition.

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Benefits

Health Insurance

401(k) Company Match

Paid Vacation

Paid Parental Leave

Short-term & Long-term disability Benefits

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

0%

2 year growth

0%
PR Newswire
Feb 9th, 2026
Reworld appoints Mauro Gregorio, former Dow $10B division president, to board

Reworld, a sustainable waste solutions company, has appointed Mauro Gregorio to its Board of Directors. Gregorio brings extensive global leadership experience from his career at Dow Inc., where he most recently served as President of the Performance Materials & Coatings division, overseeing approximately $10 billion in annual sales. During his two-decade tenure at Dow, Gregorio held several senior roles, including President of Dow Consumer Solutions and CEO of Dow Silicone Corporation, where he led the integration of Dow Corning following its acquisition. He has also served on boards of several public and private companies, including Eagle Materials, Graham Corporation and Radius Recycling. Reworld's leadership expects Gregorio's experience in asset-intensive industries to support the company's growth and sustainability initiatives.

Cahill Gordon & Reindel LLP
Jan 10th, 2026
Cahill Represents Lead Arrangers in Reworld’s $930 Million of Refinancing Credit Facilities | Cahill Gordon & Reindel LLP

Cahill represented the administrative agent and lead arrangers in connection with $930 Million of Term Loan B and Term Loan C credit facilities for Reworld Holding Corporation.

PR Newswire
Jun 12th, 2025
Reworld™ Releases 2025 Sustainability Report, Advancing Its Mission To Waste Better

MORRISTOWN, N.J., June 12, 2025 /PRNewswire/ -- Reworld™, a leading sustainable waste solutions company, released its 2025 Sustainability Report, showcasing how it is helping customers and communities waste better through innovative technologies and a commitment to circularity. The report highlights how Reworld™ is delivering on its mission to advance sustainability, scale innovation and support the communities in which it operates

ROI-NJ
Jun 3rd, 2025
Reworld Appoints Aaron Johnson To President, Midwest Region

Reworld, a leader in sustainable waste solutions based in Morristown, announced the appointment of Aaron Johnson as president, Midwest Region, reinforcing the company’s commitment to regional growth and enhanced capabilities.Johnson will oversee all aspects of the company’s business across the Midwest, focusing on commercial growth, service delivery and operational discipline.Johnson brings more than 22 years of extensive experience in the waste management industry with unique credibility in profiled waste. He began his career in his family-owned waste business that was acquired by Waste Management in 2003, where he further enhanced his expertise until his most recent role as Area vice president for the Great Lakes Area.Throughout this time, Johnson has demonstrated a strong track record in delivering top and bottom-line financial results, driving operational efficiency, supporting new business expansion and leading change. He holds a bachelor’s degree in business management from Purdue University, as well.“Aaron’s deep industry knowledge and hands-on approach make him an excellent fit to lead our Midwest Region,” said Azeez Mohammed, president and CEO of Reworld. “His experience driving growth both organically and inorganically, executing successful integrations and leading large teams through change will be critical as we continue to expand our footprint and elevate performance across the region.”

PR Newswire
Apr 28th, 2025
Reworld™ Celebrates Earth Month With Community Impact Environmental Initiatives

MORRISTOWN, N.J., April 28, 2025 /PRNewswire/ -- Reworld™, a leader in sustainable waste solutions, honored Earth Month this April with over a dozen volunteer-driven cleanups, beautification projects, and community partnerships across the United States. From restoring school gardens and assembling community garden beds to hosting park cleanups and supporting native landscaping initiatives, Reworld™ employees came together to drive local environmental change in the communities where they live and work