
Posted 24 days ago
Senior Machinist / R&D Specialist
AI Summary
A Senior Machinist / R&D Specialist operates CNC and traditional machines to produce precision prototype parts, programs 5-axis setups, supervises shop staff, and collaborates with engineers on fabrication processes.
About this role
About Mainspring
Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
The core values that ground our work, guide our decisions, and connect us together:
- Pragmatic Optimism
- Excellence without Ego
- Proactive Collaboration
Job Overview
Duties and Responsibilities
Oversees and coordinates all day-to-day operational and support activities of the shop, ensures that work production meets the objectives, specifications, and standards, and that all applicable operating policies and procedures are adhered to
Operate standard equipment, i.e. vertical milling machines, band saw, drill press, and measuring tools to produce prototype parts
Consult with engineers regarding design, capacity and purpose, and types of materials to be used for fabrication
Analyze written specifications, drawings, rough sketches, and oral instructions to plan layout and determine sequence of operations. Plans machining by studying work orders, engineering plans, materials, specifications, drawings, reference planes, locations of surfaces, and machining parameters; interprets geometric dimensions and tolerances
Works with engineers to evaluate processes and recommends changes or modifications for efficiency and adaptability to setup and production
May review, evaluate, and make recommendations for purchases such as supplies, materials, and/or equipment
May supervise the work of employees engaged in shop production and production support activities, to include recommendations for hiring, termination, performance evaluation, training, work allocation, and problem resolution
Maintains current knowledge with respect to relevant state-of-the-art technology, equipment, and/or systems
Performs miscellaneous job-related duties as assigned
Produces custom tooling and fixture design as needed for complex prototypes
Minimum Job Requirements
High school diploma or GED; at least 7 years of experience directly related to the duties and responsibilities specified
Completed degree(s) from an accredited institution that are above the minimum education requirement may be substituted for experience on a year for year basis
Knowledge, Skills and Abilities Required
Experience with MasterCAM, 5 axis programming
Ability to operate standard and specialized equipment to produce prototype parts
Ability to perform standard shop computations
Skill in production of parts with extremely close tolerances
Ability to perform experimental set ups and complex machining procedures
Work in a collaborative environment
Ability to read, understand, follow, and enforce safety procedures
Strong interpersonal skills and the ability to effectively communicate with a wide range of individuals in a diverse community
Leadership skills
Ability to supervise and train employees on basic machine operations
Working knowledge of geometric dimensions and tolerances
Working knowledge of AutoCAD, Solid Works and/or related CAD software
Knowledge of American National Standards Institute - ANSI
Working Conditions and Physical Effort
Moderate physical activity. Requires handling of average-weight objects up to 25 pounds or standing and/or walking for more than four (4) hours per day
Work environment involves some exposure to hazards or physical risks, which require following basic safety precautions
Work may involve moderate exposure to unusual elements, such as extreme temperatures, dirt, dust, fumes, smoke, unpleasant odors, and/or loud noises
Skills
Explore related jobs
More jobs at Mainspring Energy
Senior Field Service TechnicianMenlo Park, CA
Field Service TechnicianMenlo Park, CA
Staff Mechanical Engineer, Sealing SystemsMenlo Park, CA
Senior Reaction Controls EngineerMenlo Park, CA
Principal Electrical Engineer - Power Plant Integration LeadMenlo Park, CA
Staff Electrical Engineer - Power Plant Integration LeadMenlo Park, CA
Similar 5-axis CNC Programming jobs
Jobs in Menlo Park
- ECyber Security Engineer/Scientist (Ph.D.)Exponent · Menlo Park, CA
- ESecurity-Focused Embedded Systems Engineer/Evaluator (Ph.D.)Exponent · Menlo Park, CA
- EEngineer/Scientist (Ph.D.)Exponent · Menlo Park, CA
- EComputer Scientist (Ph.D.)Exponent · Menlo Park, CA
- EEmbedded Systems Engineer/Evaluator (Ph.D.)Exponent · Menlo Park, CA
- ECivil/Structural Engineering Manager (MS/PhD)Exponent · Menlo Park, CA
Browse these categories
Market data for this role
All reports →- SeriesRole reportsOne role family at a time: how many openings, what changed this week, who is hiring, what it pays.
- SeriesSalary reportsWhat employers publish in job postings, by level and workplace. Not self-reported pay.
- Market overviewState of tech hiring, September 2026: up 4.8%Tech hiring rose 4.8% month over month in September 2026, with 411,122 new listings. Customer support and account executive roles led the growth.