Mold Design Engineer

Why work for RL Hudson

We pride ourselves on our employees and meticulous facilities. When you work at RL Hudson & Rapid Production Tooling, you’re a part of something great.  We are a rapidly growing, family owned company that specializes in solving problems and increasing value for our customers. Many of the world’s most sophisticated manufacturing companies rely on us for a wide range of components, including molded rubber, molded plastic, formed hoses, sealing devices and custom assemblies. These large OEMs turn to RL Hudson & Rapid Production Tooling when they need innovative design solutions, excellent service, reliable quality and delivery at a great value. We are constantly looking for talented individuals to join our team. Let’s explore the possibilities together.


                                                                JOB DESCRIPTION





Mold Design Engineer JOB TYPE: Full Time






The plastic injection Molding Design Engineer is primarily responsible and accountable for design of molds and related components ensuring customer specifications are met and they meet appropriate quality standards.



·         Take a part model from customer and analyze moldability, draft requirements, verify part model matches print, and create a power point presentation with the results.

·         Use customer specifications for mold class, cavitation, type of runner system and gating.

·         Add a shrink rate to part model and create an assembly of parts and runners for mold design and or mold flow when necessary.

·         Create a quick preliminary layout to review internally and with customers.

·         Work with program manager and engineering manager to develop best mold design.

·         After reviews continue to complete mold design.

·         Use a check list developed by Rapid to review your own design.

·         After final internal design review by engineering manager make necessary changes.

·         Design for manufacturing so toolroom is efficient as possible.

·         Create complete BOM’s

·         Create 2D drawings when needed.

·         Overlay part models from customers when engineering changes are required and create a power point to describe the changes.

·         Make changes to mold design including inserting areas or welding depending on customer’s request.

·         Use standard mold components as much as possible.

·         Analyze parts with various measuring equipment when necessary.

·         Work with toolmakers during build to improve manufacturability and functionality.

·         Attend sample of molds for functionality and quality.


Education and Experience

·         Bachelors or Associates degree in plastics engineering and injection mold design or 10 years equivalent job experience required.

·         5 years in a manufacturing and molding environment.

·         Qualified individuals do not need all skills listed to be considered, a strong desire to learn any skills that are lacking will be taken into consideration.

Job Knowledge, Skills and Abilities

·         Must have a working knowledge of plastic injection molds.

·         Proficient is CAD software specifically Solid Works.

·         Able to analyze plastic part models for moldability of part, proper draft required for shutoffs, proper draft required for textures and polished finishes.

·         Able to take a part model from customer through to develop a complete mold design.

·         Knowledge of shrink rates of different resins.

·         Understanding single cavity molds and high cavitation molds.

·         Understanding the classifications of molds. Class 101, 102, 103, etc.

·         Able to DFM so the mold makers are efficient in their machine operations.

·         Able to problem solve working with Toolmakers and Process Engineers.

·         Able to work with customers on a professional level.

·         Able to overlay part models to analyze and describe differences for engineering changes.

·         Able to create 2D drawings from mold design when needed.

·         Knowledge of Solid Works mold flow a plus.

·         Knowledge of hot runner systems and their manufactures.

·         Ability to work with outside vendors.

·         Knowledge of GD&T

·         Proficient in Microsoft products including PowerPoint, Excel and Word.

·         Able to work in a fast-paced environment.

·         Able to program and operate CNC equipment a plus.

·         Ability to learn new technology and strategies.




Occasional (1-33%)    Frequent (34-66%)    Constant (67-100%)



Climbing: Body agility is emphasized for ascending or descending ladders, stairs, ramps, and the like by using feet, legs, hands or arms. Occasional
Stooping:  Bending the body downward and forward at the waist, requiring full use of the lower extremities and back muscles. Occasional
Kneeling:  Bending legs to come to a rest on the knee(s). Occasional
Balancing:  Maintaining body equilibrium to prevent falling when walking, standing, or crouching on narrow, slippery, or erratically moving surfaces. Occasional
Reaching:  Extending hand(s) and arm(s) in any direction. Occasional
Carrying:  Transporting an object, usually holding it in the hands or arms or on the shoulder. (Maximum weight of the object(s) 50 pounds) Occasional
Pushing:  Using the upper extremities to exert force upon an object so that the object moves away from the force. (Maximum weight of the object(s) 50 pounds) Occasional
Pulling:  Using the upper extremities to exert force upon an object so that the object moves toward the force. (Maximum weight of the object(s) 50 pounds) Occasional
Sitting:  Remaining in the normal seated position. Constant
Standing:  Remaining on one’s feet in an upright position without moving about, particularly for sustained periods of time. Occasional
Walking:  Moving about on foot to accomplish tasks. Frequent
Lifting:  Raising objects from a lower to a higher position or moving objects horizontally. (Maximum weight of the object(s) 30 pounds) Occasional
Grasping:  Applying pressure to an object with the fingers and/or palm. Occasional
Repetitive Motions:  Substantial movements (motions) of the wrists, hands, and/or fingers for the purpose of picking up items, typing, operating ten-key or performing data entry. Constant
Talking:  Expressing or exchanging instructions and ideas by means of the spoken word. Constant
Hearing:  Ability to receive oral information and/or sounds through the ear. Constant
Seeing:  Obtaining impressions through the eyes of the distance, size, shape, motion, color, or other characteristics of objects.  The major visual functions are:


1.    Acuity (far and near)

2.    Depth perception (perceiving distances)

3.    Color vision (distinguishing between different colors)

4.    Field of vision (seeing a wide range of objects at the same time).












·         Plastics

·         Machinery

Employment Type


Job Functions

·         Manufacturing



This position is occasionally exposed to the following environmental conditions: subject to air and/or skin exposure to oils and/or other hazardous materials, sufficient noise to cause the worker to shout in order to be heard above the ambient noise level and one or more of the following conditions that affect the respiratory system or skin: fumes, odors, dusts, mists, gases or poor ventilation


This position is constantly protected from weather conditions but not necessarily from temperature changes.

Note:  The essential job functions and associated physical and mental requirements contained in this document describe the general nature and level of the work performed by personnel assigned to the job.  They are not intended to represent an exhaustive listing or be inclusive of all aspects of the job.  The tasks and procedures involved in the performance of the job responsibilities may vary from day-to-day.  Major changes in areas of responsibility will require revision of this job description.