CNC Machinist IV (Contractor)

Sierra Space•Louisville, CO

22h•Onsite

About The Position

As a CNC Machinist IV, you'll operate, program, and optimize machines to produce precision rocket engine components and space flight critical hardware supporting national security. Working with diverse materials, you'll collaborate directly with design engineers to bring cutting-edge space technology to life. This role requires advanced equipment expertise and strict adherence to safety standards. You'll lead improvement initiatives, mentor junior machinists, and provide technical leadership—directly contributing to humanity's next achievements in space exploration.

Requirements

Typically 8+ years of related experience.
Expert knowledge of best shop practices including PPE and shop safety requirements.
Experience performing advanced equipment setup and maintenance activities, and display expert mechanical aptitude, shop tool, and hand tool competency.
Proficient in the use of precision measurement tools and fabricating fixtures for flight and non-flight assemblies.
Ability to lead and enforce 5S, FOD and ESD process.
Must be a U.S. Citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State or U.S. Department of Commerce.

Nice To Haves

Ability to interpret complex technical drawings and blueprints.
Experience with advanced precision measurement instruments such as micrometers, calipers.
Machinist certification or related certification.
Extensive experience in a manufacturing or machining environment.
Proficient in CNC programming languages such as G-code and M-code.
Understanding of advanced machining techniques, including high-speed machining and hard milling.
Advanced understanding of CAD/CAM software for designing and programming CNC operations.
Familiarity with multi-axis CNC machines and their operation.
In-depth knowledge of material properties and machining characteristics of aerospace-grade alloys.
Strong problem-solving skills and attention to detail.
Ability to work independently and as part of a team.
Excellent communication skills and a willingness to learn and adapt.
Experience with statistical process control (SPC) and other quality control methodologies.
Knowledge of lean manufacturing principles and practices.
Ability to perform complex machine repairs and adjustments.
Familiarity with shop floor data collection systems and software.
Proven experience in training and mentoring junior machinists.
Leadership skills and the ability to lead cross-functional teams.
Ability to evaluate and recommend new machining technologies and equipment.

Responsibilities

Operate, program, and optimize CNC machines to produce high-precision aerospace components.
Perform advanced equipment setup and maintenance activities.
Deburr and clean machined parts.
Use precision measurement tools to ensure components meet specified tolerances.
Adhere to and enforce established best shop practices, including PPE and safety requirements.
Follow all 5S, FOD, and ESD process protocols.
Collaborate with team members to improve processes and achieve production goals.
Develop and optimize CNC programs for complex parts and assemblies.
Maintain accurate records of machining operations and part inspections.
Troubleshoot and resolve complex machining issues.
Participate in root cause analysis and corrective action activities.
Ensure compliance with quality standards and regulatory requirements.
Lead and participate in cross-functional teams to drive process improvements.
Provide technical leadership and expertise within the machining team.
Evaluate and recommend new machining technologies and equipment.