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Junior Mechanical Engineering Jobs in Puerto Rico

Mentor Technical Group

Jr. Engineer

Gurabo, PR · On-site

Bachelor's degree in Engineering (e.g., Mechanical, Electrical, Civil, Software, or related field). * Strong analytical and problem-solving skills. * Basic experience with engineering tools, software ...

Mentor Technical Group

Jr. Engineer

Gurabo, PR · On-site

$52 - $78/hr

Qualifications * Bachelor's degree in Engineering (e.g., Mechanical, Electrical, Civil, Software, or related field). * Strong analytical and problem-solving skills. * Basic experience with ...

FITS LLC

PR · On-site

Bachelor of Science in Mechanical, Chemical, Electrical, Industrial Engineering, or a related ... Besides being a Jr. Project Manager, you're able to analyze data so that not a single inconsistency ...

JLL

Jr Facility Engineer

Gurabo, PR · On-site

Junior Facilities Engineer - Position Purpose Entry-level technical role focused on ensuring ... Bachelor's degree in Engineering (Mechanical, Electrical, Industrial), Facilities Management, or ...

ABB

PR · On-site

May instruct or coach junior colleagues. * Ensure that all processes are always in full ISO 9001 ... Preferred bachelor's degree in Electrical/Electronic/Mechanical Engineering or related field with ...

BlackBerry Inc.

Customer Quality Engineer

Arecibo, PR · On-site

$110 - $170/hr

May instruct or coach junior colleagues.Ensure that all processes are always in full ISO 9001:2015 ... JOB SKILLSPreferred bachelor's degree in Electrical/Electronic/Mechanical Engineering or related ...

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Junior Mechanical Engineering information

What does a junior mechanical engineer do?

A Junior Mechanical Engineer assists in designing, developing, and testing mechanical devices and systems under the supervision of senior engineers. Their responsibilities often include creating technical drawings, performing basic calculations, supporting prototype development, and helping to solve engineering problems. They also collaborate with other team members to ensure projects meet specifications and deadlines. This role typically serves as an entry-level position, providing valuable hands-on experience and professional development within the mechanical engineering field.

What are the key skills and qualifications needed to thrive as a junior mechanical engineer?

To thrive as a Junior Mechanical Engineer, you need a solid understanding of mechanical engineering principles, a relevant engineering degree, and foundational knowledge of design and manufacturing processes. Familiarity with CAD software (such as SolidWorks or AutoCAD), simulation tools, and basic project management systems is typically required. Strong problem-solving abilities, attention to detail, and effective teamwork and communication skills help you excel in cross-functional environments. These skills are crucial for delivering accurate designs, collaborating efficiently, and supporting successful project outcomes in engineering teams.

What types of projects do junior mechanical engineers typically work on, and how much autonomy can I expect in this role?

As a Junior Mechanical Engineer, you will often be involved in supporting senior engineers with tasks such as drafting designs, conducting simulations, preparing technical documentation, and performing tests on prototypes. Early in your career, you'll typically work within a multidisciplinary team, collaborating with experienced engineers and other departments such as manufacturing and quality assurance. While you may start with closely supervised assignments, many organizations encourage gradual independence as you demonstrate your skills and reliability. Over time, you will likely take on more complex project components and gain opportunities to lead smaller tasks or initiatives.

What is the difference between Junior Mechanical Engineering vs Mechanical Design Engineer?

AspectJunior Mechanical EngineeringMechanical Design Engineer
Required CredentialsBachelor's in Mechanical Engineering or related fieldBachelor's or higher in Mechanical Engineering or Design
Work EnvironmentEntry-level, team-based projects, manufacturing or R&D settingsDesign-focused tasks, CAD software, product development teams
Employer & Industry UsageManufacturing, automotive, aerospace, HVACProduct design, engineering firms, industrial equipment

Junior Mechanical Engineers typically perform basic engineering tasks under supervision, focusing on learning and supporting projects. Mechanical Design Engineers concentrate on creating and refining product designs using CAD tools, often requiring more specialized design skills. While both roles require a mechanical engineering background, the Design Engineer role emphasizes design and development, whereas the Junior Mechanical Engineer role is more about supporting engineering processes and gaining experience.

How do I get my first job as a junior mechanical engineer?

To secure a first junior mechanical engineering position, candidates should obtain a relevant degree such as a bachelor's in mechanical engineering, develop practical skills through internships or projects, and familiarize themselves with industry tools like CAD software. Building a strong resume highlighting technical skills and applying to entry-level roles through online job boards or company websites is essential.

Is junior mechanical engineering a stressful job?

Junior mechanical engineers often face stress related to project deadlines, technical problem-solving, and workload management. The job typically involves teamwork, use of CAD software, and adherence to safety standards, which can contribute to pressure levels, especially during busy periods or complex projects.

What are the most commonly searched types of Mechanical Engineering jobs in Puerto Rico?

The most popular types of Mechanical Engineering jobs in Puerto Rico are:

What are popular job titles related to Junior Mechanical Engineering jobs in Puerto Rico?

For Junior Mechanical Engineering jobs in Puerto Rico, the most frequently searched job titles are:

What job categories do people searching Junior Mechanical Engineering jobs in Puerto Rico look for?

The top searched job categories for Junior Mechanical Engineering jobs in Puerto Rico are:

What cities in Puerto Rico are hiring for Junior Mechanical Engineering jobs?

Cities in Puerto Rico with the most Junior Mechanical Engineering job openings:

Junior Mechanical Engineering jobs near you
Infographic showing various Junior Mechanical Engineering job openings in Puerto Rico as of July 2026, with employment types broken down into 91% Full Time, 6% Part Time, and 3% Contract. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution.

Principal Engineer, Data Analytics and Machine Learning (Hybrid - Aguadilla, PR)

Raytheon Technologies

Aguadilla, PR • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 19 days ago

RTX rating

8.2

Company rating: 8.2 out of 10

Based on 86 frontline employees who took The Breakroom Quiz

38th of 72 rated aerospace companies

Job description

Date Posted:
2026-05-21
Country:
United States of America
Location:
US-PR-AGUADILLA-110 ~ Rd 110 N Km 28.8 ~ RD110
Position Role Type:
Hybrid
U.S. Citizen, U.S. Person, or Immigration Status Requirements:
U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract.
Security Clearance:
None/Not Required
Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense.
The Global Engineering & Technology Center in Puerto Rico (GETC-PR) is seeking a seasoned Principal Engineer with advanced skills in Data Analytics and Machine Learning and a strong background in mechanical systems to lead mechanical and analytics developments analyzing complex aircraft services and engineering datasets. This role entails leveraging expertise in data analytics, machine learning, and mechanical engineering to extract actionable insights, develop predictive models, and lead initiatives that enhance field performance and reliability.
The ideal candidate will possess a deep understanding of mechanical engineering principles, such as structural behavior, dynamics, and thermal concepts, to interpret complex datasets and collaborate with subject matter experts. This role will also include mentoring junior engineers, helping establish best practices, and driving strategic initiatives that align with organizational goals, offering opportunities for leadership and high-impact contributions.
This position will sit at our Aguadilla, PR location. You must be residing in Puerto Rico at the time of starting employment. Relocation is not offered.
This role is categorized as hybrid, with 3 days onsite and 2 days remote following the schedule assigned by the Manager.
What YOU will do:
  • Lead and oversee the analysis of engineering and aircraft performance datasets, delivering actionable insights to improve product performance and reliability.
  • Drive the development, training, and validation of machine learning (ML) models, with applications including predictive maintenance, service time estimation, and performance forecasting.
  • Define and standardize validation approaches, acceptance criteria, and performance metrics for analytical and ML models across multiple programs.
  • Guide and mentor junior engineers on data analytics and machine learning methodologies, fostering skill development and technical growth within the team.
  • Serve as the primary technical liaison with engineering discipline owners, design teams, and external stakeholders to address critical engineering challenges and opportunities.
  • Develop and implement best practices for data curation, cleaning, integration, and preparation for analytics and ML workflows.
  • Oversee the analysis of strain gauge, structural, thermal, and flight/aircraft data, identifying trends, predictive indicators, and opportunities for system optimization.
  • Lead collaborative efforts with design, reliability, service engineering, and customer support teams to provide data-driven recommendations that enhance product performance and address customer needs.
  • Conduct advanced statistical analyses to assess quality, completeness, and integrity of engineering and enterprise data.
  • Research, evaluate, and implement cutting-edge ML algorithms (e.g., supervised learning, unsupervised learning, clustering, anomaly detection) to solve engineering challenges and improve performance.
  • Represent the organization in executive-level presentations, communicating technical recommendations and insights to leadership and customers.
  • Develop and maintain technical documentation, presentations, and reports for technical and non-technical audiences.
  • Advocate for and lead efforts in digital transformation, including leveraging digital thread, PLM systems, and model-based engineering workflows.
  • Occasionally travel domestically and/or internationally to support project requirements, supplier engagements, or customer needs.

What YOU will learn:
  • You will learn about our growing engineering team in Puerto Rico; What we do? Who we support? How we work?
  • You will learn the technologies of today and tomorrow which we count on to maintain world leadership in the aerospace industry.
  • You will learn why people enjoy and feel fulfilled by working in our industry.

Qualifications you must have:
  • Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and 8 years prior relevant experience or an Advanced Degree in a related field and minimum 5 years of experience.
  • Demonstrated professional experience communicating in English (verbal and written).
  • U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract.

Qualifications We Prefer:
  • Expertise in data analytics workflows, statistical methods, and engineering data interpretation, with a proven record of solving complex technical challenges.
  • Advanced knowledge of machine learning (ML) concepts, with demonstrated experience in developing, deploying, and validating models for prediction, classification, and anomaly detection.
  • Advanced degree in Mechanical Engineering, Aerospace Engineering, Data Science, or a related field.
  • Deep understanding of mechanical engineering principles, including structural behavior, dynamics, thermal concepts, and aircraft systems.
  • Strong experience with Python for data analysis (e.g., NumPy, Pandas, PySpark) and familiarity with ML frameworks such as TensorFlow or Scikit-learn.
  • Experience with finite element analysis (FEA), structural analysis, thermal concepts, dynamics, or instrumentation data interpretation.
  • Proficiency with database tools and SQL for managing and analyzing datasets.
  • Advanced experience with data visualization tools (e.g., Tableau, Power BI) and the ability to present insights effectively to diverse stakeholders.
  • Expertise in specialized engineering data such as strain gauge, thermal, or flight/aircraft performance datasets.
  • Experience with Agile methodologies and tools (e.g., JIRA, Confluence) and experience in cross-functional collaboration.
  • Knowledge and hands-on experience with digital thread, PLM systems, or model-based engineering workflows to drive digital transformation initiatives.

What We Offer
Some of our competitive benefits package includes:
  • Medical, dental, and vision insurance
  • Three weeks of vacation for newly hired employees
  • Generous 401(k) plan that includes employer matching funds
  • Participation in the Employee Scholar Program (ESP)
  • Life insurance and disability coverage
  • Employee Assistance Plan, including up to 8 free counseling sessions.
  • And more!

Learn More & Apply Now!
Collins Aerospace, an RTX business, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio, and expertise to solve customers' toughest challenges and to meet the demands of a rapidly evolving global market.
Join our growing engineering team in Puerto Rico, where you will provide critical support to all Collins SBUs, working on exciting programs and projects ranging from the development of the next generation of advanced concept ejection seats to the latest technologies for the U.S. warfighter.
WE ARE REDEFINING AEROSPACE.
* Please consider the following role type definition as you apply for this role.
Hybrid: Employees who are working in Hybrid roles will work regularly both onsite and offsite. Ratio of time working onsite will be determined in partnership with your leader.
At Collins, the paths we pave together lead to limitless possibility. And the bonds we form - with our customers and with each other -- propel us all higher, again and again.
Apply now and be part of the team that's redefining aerospace, every day.
RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans' Readjustment Assistance Act.
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About RTX

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Industry

Guided missile and space vehicle manufacturing, it services, aerospace product and parts manufacturing and engineering professional services

Company size

10,000+ Employees

Headquarters location

Waltham, MA, US

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