CNC Programmer / Setup Machinist

Location: Placentia, CAJob Type: Full-TimePay: $27.00–$40.00 per hour, depending on experienceAbout Datum DynamicsDatum Dynamics is a growing aerospace precision machine shop specializing in complex, tight-tolerance CNC machining. We focus on low-volume, high-mix work where quality, craftsmanship, and continuous improvement matter.We're building a team of people who enjoy solving machining challenges, take pride in their work, and want to grow alongside the company.About the RoleWe're looking for a motivated CNC programmer who already has a strong foundation in CNC machining and Mastercam and wants to continue developing their skills.This is an excellent opportunity for someone with solid 3-axis programming experience who wants to learn advanced multi-axis machining. You'll work directly with ownership and gain hands-on experience programming, setting up, and optimizing increasingly complex jobs.We value attitude, work ethic, curiosity, and a willingness to learn just as much as experience.ResponsibilitiesProgram CNC mills using Mastercam.Set up and prove out new jobs.Read and interpret engineering drawings, GD&T, and customer specifications.Select tooling, workholding, and machining strategies.Optimize programs for cycle time, quality, and tool life.Troubleshoot machining and programming issues.Maintain organized setup documentation and program revisions.Collaborate with the production team to meet quality and delivery expectations.Continue developing programming skills with opportunities to learn advanced 5-axis machining.Qualifications2+ years of CNC programming experience.Experience with Mastercam.Strong understanding of CNC milling and machining fundamentals.Ability to independently set up and run CNC machining centers.Ability to read blueprints and understand GD&T.Experience selecting tooling and workholding.Strong mechanical aptitude and problem-solving skills.Self-motivated with a desire to continuously improve.Aerospace machining experience is a plus but not required.What You'll Be Working WithHaas UMC-500 SS 5-Axis Machining CenterHaas VF-2SS Vertical Machining CenterPrecision aerospace and prototype componentsLow-volume, high-mix productionModern tooling and workholdingWhat We're Looking ForThe right person doesn't need to know everything on day one.We're looking for someone with a solid machining foundation who's eager to learn, takes ownership of their work, asks questions, and genuinely enjoys becoming better at their craft. If you're motivated, dependable, and passionate about machining, we'll invest in your growth and help you develop into a highly capable multi-axis programmer.Why Join Datum Dynamics?Competitive pay with opportunities for advancement.Direct mentorship and hands-on training in advanced CNC programming.Work on challenging aerospace components instead of repetitive production.Clean, organized, quality-focused shop.Opportunity to grow with a rapidly expanding company and play an important role in its future.If you're looking for a place where you can continue building your skills, take on meaningful work, and grow into an advanced CNC programmer, we'd love to hear from you.