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Flex Injection Molding Engineer Jobs in Houston, TX

Lunar Resources

Mechanical Engineer

Houston, TX · On-site

Transitioning prototypes into scalable parts via casting and injection molding. * Complex Fixturing ... You understand that engineering is 10% inspiration and 90% grinding through hard problems until ...

Lunar Resources

Mechanical Engineer

Houston, TX · On-site

Transitioning prototypes into scalable parts via casting and injection molding. * Complex Fixturing ... You understand that engineering is 10% inspiration and 90% grinding through hard problems until ...

Lunar Resources

Mechanical Engineer

Houston, TX · On-site

Transitioning prototypes into scalable parts via casting and injection molding. * Complex Fixturing ... You understand that engineering is 10% inspiration and 90% grinding through hard problems until ...

American Block

CNC Machinist-Machining center

Houston, TX · On-site

$26 - $30/hr

Collaborate with team members on assembly processes involving plastics injection molding or other ... Strong background in CNC programming using CAM software; ability to modify programs based on ...

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Flex Injection Molding Engineer information

See Houston, TX salary details

$29.6K

$85.4K

$112.7K

How much do flex injection molding engineer jobs pay per year?

As of Sep 4, 2026, the average yearly pay for flex injection molding engineer in Houston, TX is $85,403.00, according to ZipRecruiter salary data. Most workers in this role earn between $76,900.00 and $99,800.00 per year, depending on experience, location, and employer.

What does a flex injection molding engineer do?

A Flex Injection Molding Engineer is responsible for designing, optimizing, and overseeing the manufacturing process of plastic parts using injection molding technology, often in flexible or contract manufacturing environments. They work on improving mold designs, selecting suitable materials, setting machine parameters, and troubleshooting production issues to ensure high-quality and cost-effective products. Their role often involves collaborating with product designers, quality control teams, and production staff to achieve efficient and reliable mass production of plastic components.

What are the key skills and qualifications needed to thrive as a flex injection molding engineer?

To thrive as a Flex Injection Molding Engineer, you need a strong background in plastics engineering, process optimization, and manufacturing principles, generally supported by a degree in engineering or a related field. Familiarity with injection molding machines, CAD/CAM software, and industry standards such as ISO or Six Sigma certifications is typically required. Strong problem-solving, communication, and project management skills help you collaborate with cross-functional teams and resolve production challenges effectively. These skills ensure efficient, high-quality, and cost-effective production of molded components in a competitive manufacturing environment.

What are some common challenges faced by flex injection molding engineers, and how can they be addressed in a production setting?

Flex Injection Molding Engineers often encounter challenges such as maintaining consistent product quality, troubleshooting equipment malfunctions, and minimizing cycle times while maximizing efficiency. Addressing these issues typically involves collaborating closely with cross-functional teams, implementing robust process monitoring systems, and staying up to date with the latest advancements in molding technology. Proactively participating in root cause analysis and continuous improvement initiatives can also help engineers overcome these challenges and contribute to a more streamlined production environment.

What is the difference between Flex Injection Molding Engineer vs Injection Molding Technician?

AspectFlex Injection Molding EngineerInjection Molding Technician
CredentialsBachelor's degree in engineering or related field, certifications in molding processesTechnical diploma or certification in molding or manufacturing
Work EnvironmentDesign, process optimization, troubleshooting in manufacturing plantsOperate and maintain molding machines on the production floor
ResponsibilitiesDeveloping processes, improving product quality, troubleshooting complex issuesSetting up machines, monitoring production, performing routine maintenance

The Flex Injection Molding Engineer focuses on process development, design, and troubleshooting, often working on process optimization and quality improvement. In contrast, the Injection Molding Technician handles daily machine operation and maintenance. Both roles are essential in manufacturing but differ in scope and responsibilities.

What are the most commonly searched types of Injection Molding Engineer jobs in Houston, TX?

The most popular types of Injection Molding Engineer jobs in Houston, TX are:

What cities near Houston, TX are hiring for Flex Injection Molding Engineer jobs?

Cities near Houston, TX with the most Flex Injection Molding Engineer job openings:

Flex Injection Molding Engineer jobs near you
Infographic showing various Flex Injection Molding Engineer job openings in Houston, TX as of August 2026, with employment types broken down into 91% Full Time, 4% Part Time, 2% Temporary, and 3% Contract. Highlights an 85% Physical, 5% Hybrid, and 10% Remote job distribution, with an average salary of $85,403 per year, or $41.1 per hour.

Mechanical Engineer

Lunar Resources

Houston, TX • On-site

Full-time

Re-posted 9 days ago

Job description

The Mission
We are looking for a Mechanical Engineer who is hungry, obsessed with building, and ready to drink from the firehose. You won't just be pushing paper; you will be on the floor designing, building, breaking, and iterating on high-consequence hardware.
We are an startup building next-gen pulsed power systems in defense and industry. We are moving extremely fast. We don't have time for red tape, office politics, or "that's not my job" attitudes.
The Role
You will be thrown into the deep end immediately (with mentorship). We don't expect you to know everything on day one, but we expect you to learn fast and think on your feet. You will support the engineering lead in:
  • Rapid Prototyping: Owning the DFM process from concept to physical part using FDM and SLS 3D printing.
  • Production Design: Transitioning prototypes into scalable parts via casting and injection molding.
  • Complex Fixturing: Designing and building test fixtures for High Voltage environments.
  • System Design: assisting in the mechanical design and packaging of full packaged systems.

Who You Are
  • You are a Builder: You have a portfolio of things you've built with your own hands (Formula SAE, Baja, personal robotics projects, or crazy garage builds).
  • You possess "Grit": You understand that engineering is 10% inspiration and 90% grinding through hard problems until they are solved.
  • You are fearless but safe: You aren't intimidated by high voltage or energetic materials, but you respect the physics and safety protocols required to handle them.
  • You want Upside: You aren't looking for a stable 9-5 at a legacy defense contractor. You want to build something that matters.

IMPORTANT: You must be fluent in CAD; we need someone who can model complex assemblies at the speed of thought, not someone who is still learning the interface.
The Technical Stack (The "Wishlist")
We realize you are early in your career. If you are smart and work hard, we can teach you the physics. However, exposure to the following is a big plus:
  • BS in Mechanical Engineering (or equivalent experience).
  • CAD proficiency (SolidWorks, NX, or Fusion 360).
  • Fabrication knowledge: You know how to design for FDM/SLS (additive) vs. Injection Molding/Casting (subtractive/formative).
  • Electromechanical exposure: Experience designing fixtures or enclosures for high-voltage systems.

Why Join Us?
  • Radical Ownership: You will have your fingerprints on hardware that ships.
  • Mentorship: You will work directly with senior engineers on complex, multi-disciplinary problems (HV, Ballistics, Materials Science).
  • High Upside: Join at the ground floor of a fast-growing startup

Note: Due to the nature of our work, candidates must be US Citizens or Permanent Residents (Green Card holders) to comply with ITAR/EAR regulations.
Questions:
What is a technical "rabbit hole" you've fallen down recently just because you were curious?
What is the most physically or mentally demanding task you have ever completed?
Which do you prefer: a perfect design that ships in a month, or a "good enough" prototype that ships tomorrow? Why?

Apply