Sr. CNC Programmer and Machinist

Company: Long Wall
Location: El Segundo
Posted on: February 19, 2026

Job Description:

Job Description Job Description Long Wall Company was created in 2025 to accelerate missile defense technology for the U.S. and our allies. Building on the RS1 and GS0 launch systems, Long Wall develops containerized, mass-producible missile defense systems and offers rapid, low-cost flight testing. We believe that the future of global security and stability require defensive technology that is lower cost, higher performing, better tested, and more broadly distributed than is possible today. Join us. What we look for Mission-Driven Problem Solvers. The aerospace frontier demands ingenuity. We want engineers who approach challenges with curiosity, embrace failure as a learning opportunity, and stay focused on delivering the best solution for the mission. Total Ownership. We seek engineers who take full responsibility for delivering flight-ready work while recognizing that no one succeeds alone. The best engineers make their teammates better, knowing that complementary skills create force multiplication and drive mission success. Description We are looking for an experienced CNC programmer and machinist who is excited about manufacturing development and production parts for launch vehicles and defense systems. We seek team members who can think critically when programming and machining to improve hardware designs and manufacturing processes. This role will require specific skill sets with multi-axis Mill programming and machining. Programming will be completed using Mastercam and verified using Vericut. Parts to be machined on Haas Machining Centers. Must have the ability and eagerness to both program and machine components. This role will primarily focus on 5th Axis Milling work supporting both production and development hardware for various components specifically launch vehicle engine and space system hardware. In an S5 level role – you will be expected to take projects to completion with a high level of autonomy, mentor junior machinists and drive shop and process improvements We machine parts from both billet material and additively manufactured parts: · Aluminum · Steel · Stainless Steel · Inconel Types of Machines: · Haas UMC 750 & UMC 1000 · Haas VM3 · Haas Gantry Mill Responsibilities: Use Mastercam to create new programs and review/edit existing CNC programs for production and development hardware As required, use Vericut to validate programs and maintain revision control on CNC programs Analyze piece parts for DFM to ensure that the parts are optimized for manufacturing and collaborate with engineering to recommend drawing changes as needed Take feedback from engineering and manufacturing teams to rapidly iterate on part processes and designs Set-up, prove out, and operate programs on 3 & 5-axis mills. Perform in-process and first article inspections Support and mentor junior programmers and machinists Work with support teams to ensure machine care and preventative maintenance activities are completed Design and machine custom tooling and fixturing Take an active role driving machine shop process improvements, ensuring shop cleanliness and organization is maintained to a high standard Submit purchase orders for tooling per job requirements and add tools to vendor managed inventory (VMI) list for standard components Support with material loading and handling Basic Qualifications: High School Diploma/GED or Equivalent Minimum 10 years of CNC Mill programming and machining experience; including demonstratable expert working knowledge of Mastercam, superalloy machining, Haas CNC Machines and Controls - OR - Minimum 6 years of CNC Mill programming and machining experience AND - Certification and/or provable expert working knowledge of Mastercam - Certification and/or provable expert working knowledge of Haas CNC Machines and Haas Controls - Expert in superalloy machining Availability to work a standard 10-hour shift schedule (50-hrs per week, overtime included). - Occasional weekends to support critical deadlines. Preferred Skills and Experience: Experience in interpreting GD&T and providing feedback to engineers in best practice for ease of machining and inspection Ability to read/interpret and work from controlled technical documentation and processes such as engineering drawings, layout drawings, mechanical drawings, assembly procedures, manufacturing instructions, schematics, and parts lists Proficient usage of a PC; experience with Microsoft Windows, Microsoft Office Suite (Excel, Outlook, Power Point, Word), shop floor management software (ERP) and related programs Strong written and verbal communication skills, excellent concentration with outstanding work efficiency and accuracy, great organizational skills, and a meticulous attention to detail Experience in aerospace, medical or automotive manufacturing. Strong knowledge of inspection tools and inspection processes Experience with Mastercam Blade Expert and impeller machining. Hands on experience with metal 3D printed components. Experience with Vericut verification software Experience with Microsoft Office products Familiarity with ISO9001 and AS9100D Additional Requirements: Ability to sit, stand, squat, and walk for extended periods of time. Ability to occasionally ascend/descend on ladders and/or work on rooftops. Ability lift 25lbs repeatedly and often throughout the day. Ability to communicate with individuals and groups in person, by phone and telepresence. Can work in Indoor manufacturing environment 70%, outdoors 30% Travel between our El Segundo (90%) and Port of Long Beach (10%) facilities as required. Occasional travel to our other instate and out-of-state sites may be required. This is the lowest to highest compensation range we reasonably and in good faith believe we would pay for this role at the time of this posting. We may ultimately pay more or less than the posted range, and the range may be modified in the future. An employee’s pay position within the salary range will be based on several factors including, but not limited to, relevant education, qualifications, certifications, experience, skills, geographic location, performance, and business or organizational needs. In addition to base pay and equity, we offer: · Heavily employer-subsidized medical, dental, and vision insurance plans · Long Wall paid life insurance and LTD coverage · 5% 401k match · Student loan repayment assistance program · Paid parental leave · Family planning assistance program · Long Wall paid financial wellness program Paid time off for non-exempt employees and flexible vacation policy for exempt employe ITAR Requirement This position requires access to information protected under US export control laws, including the International Traffic in Arms Regulations and/or the Export Administration Regulations. As such, US person status (including US citizens, U.S. permanent residents, individuals granted U.S. asylum status, or individuals admitted in U.S. refugee status) is a required qualification for this position. Equal Opportunity Employer We are an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, protected veteran status, disability, genetics, or citizenship status (when otherwise legally authorized to work and access export-controlled data) and will not be discriminated against on the basis of such characteristics or any other status protected by the laws or regulations in the locations where we operate. We encourage applicants of all ages.

Keywords: Long Wall, San Bernardino , Sr. CNC Programmer and Machinist, Engineering , El Segundo, California