---
title: 'Senior Manufacturing Engineer – CNC Machining at Rennscot MFG'
canonical: 'https://feeny.ai/job/senior-manufacturing-engineer-cnc-machining-rennscot-mfg-woburn-h6ftfnp64g8c'
type: 'job'
last_seen: '2026-09-11'
---

# Senior Manufacturing Engineer – CNC Machining at Rennscot MFG

- **Company:** Rennscot MFG
- **Location:** Woburn, MA
- **Compensation:** $105k–$150k
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-08-19
- **Last confirmed live:** 2026-09-11
- **Apply:** https://jobs.ashbyhq.com/rennscotmfg/177f2c0b-1de1-4ceb-9551-7e750544554e

## Job description

## What You'll Do

- Develop CNC programs and machining strategies for complex components
- Select tooling, fixturing, and workholding for new jobs
- Lead machine prove-outs and solve difficult machining challenges
- Improve cycle times, quality, and process consistency
- Create clear setup documentation that operators can rely on
- Work alongside machinists, programmers, engineers, and customers to bring new parts into production
- Mentor programmers and machinists while helping raise the technical capability of the team
- Drive continuous improvement throughout the shop

What Makes You Successful You'll fit in well if you:

- Enjoy solving machining problems that others can't
- Take pride in building processes that run right the first time
- Know how to balance quality, efficiency, and production demands
- Lead by example and enjoy sharing your knowledge
- Stay calm under pressure and find practical solutions
- Constantly look for ways to improve the way work gets done

## Why You'll Like Working Here

- Machine complex aerospace and defense components—not production widgets
- Modern equipment including 5-axis machining and advanced CAM software
- Freedom to make decisions and improve processes
- Your experience is respected and your ideas are heard
- Work alongside people who care about craftsmanship and quality
- Join a company investing in technology, people, and long-term growth

## What We're Looking For

We're more interested in what you've done than where you went to school. You should have:

- Strong experience programming and machining complex CNC parts
- Experience with multi-axis machining
- Deep understanding of tooling, fixturing, and machining strategy
- Ability to read engineering drawings and GD&T
- Experience taking new parts from prototype into production
- Confidence troubleshooting difficult machining and programming issues
- CAM software experience (Hypermill or ESPRIT is a plus)

Whether your experience came through the shop floor, an apprenticeship, military service, trade school, or engineering, we value people who can do the work.

Physical Requirements

- Ability to work in both office and manufacturing environments.
- Frequently stand, walk, bend, kneel, reach, and move throughout the facility.
- Occasionally lift and carry up to 50 pounds (team lifts when appropriate).
- Ability to use computers, CNC equipment, hand tools, and precision measuring instruments.
- Visual ability to read technical drawings, inspect machined parts, and use precision measurement equipment.
- Ability to wear required PPE and safely work around industrial machinery and equipment.
- Ability to communicate effectively with employees, customers, and suppliers.

Job Type: On-Site Job Location: Woburn, MA

## About Rennscot MFG

Rennscot MFG, founded in 2017, started as a motorsports-focused shop in the aftermarket automotive industry. Now, they are a leading provider of advanced manufacturing services located in Woburn, MA. Rennscot MFG strives to be more than just a machine shop; they solve problems in innovative ways, using a suite of integrated services to fuel a passion for ideation. With a focus on diversifying into commercial and critical technology sectors, Rennscot MFG delivers cutting-edge technologies and unwavering commitment to quality. They offer a comprehensive range of services, including reverse engineering, metal & polymer additive manufacturing, and precision machining to support various industries’ needs. For more information, visit [rennscotmfg.com](http://rennscotmfg.com).

ITAR Requirement To conform to US Government export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a US citizen, lawful permanent resident of the US, protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the US Department of State. Learn more about the ITAR here: https://www.pmddtc.state.gov/ddtc_public/ddtc_public?id=ddtc_public_portal_itar_landing.

## EEO Statement

Rennscot MFG is an Equal Opportunity Employer; employment with Rennscot MFG is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

## About Rennscot MFG

## Company Overview
- **One-liner**: Rennscot MFG is an AS9100-certified contract manufacturer specializing in metal 3D printing and advanced CNC machining for aerospace, defense, automotive, and medical customers.
- **Entity Type**: Private (bootstrapped; no disclosed funding rounds)
- **Headquarters**: Woburn, Bedfordshire, England, UK (additional U.S. office locations; operates two facilities totaling 80,000 sq. ft.)
- **Founded**: 2017
- **Founders**: Not publicly disclosed

## Core Business
- **Primary Industry**: Additive manufacturing / advanced machining (manufacturing services)
- **Target Customers**: Aerospace, defense, automotive, and medical OEMs; B2B, typically mid-to-large enterprises and government prime contractors
- **Mission / Purpose**: To provide cutting-edge solutions for the future of aviation, auto, and space exploration while simplifying supply chains and reducing risk for critical programs.

## Products & Services
- **Metal 3D Printing (Additive Manufacturing)**: Production and prototyping of complex metal parts using a fleet of 8 advanced 3D printers.
- **Advanced CNC Machining**: 5-axis and multi-axis machining with 15 CNC machines, including 9 fully automated systems.
- **Machining of AM Parts**: Post-processing and finishing for additively manufactured components.
- **Quality CMM Inspection**: In-house metrology and quality assurance.
- **Project Engineering**: Full-service design-for-manufacturing support.
- **Precision Assembly**: Light assembly and kitting services.

## Market Standing
- **Valuation / Market Cap**: Not publicly available (private company)
- **Key Metric**: Total operating space of 80,000 sq. ft. across two facilities; employs 26 staff (as of 2025).
- **Notable Investors / Partners**: None disclosed; appears self-funded.
- **Growth Signals**: Expanded from a 42,000 sq. ft. facility to 80,000 sq. ft. by 2025; holds AS9100 aerospace quality certification; serves "the world's most advanced industries and customers."

## Competitive Advantages
- **AS9100 Certification**: Qualifies Rennscot to manufacture for aerospace and defense primes.
- **Vertical Integration**: In-house design, printing, machining, inspection, and assembly under one roof.
- **Automation & Scale**: 9 fully automated CNC systems reduce lead time and improve repeatability.
- **Employee Equity Program**: Share Appreciation Rights offer ownership-like upside to all employees, rare for a private manufacturer.

## Strategic Focus
- **Current Priorities**: Deepening aerospace/defense business, expanding 3D printing capacity, and investing in automation for high-volume production.
- **Direction for Growth**: Targeting the future of aviation, space exploration, and advanced automotive applications; likely to scale headcount and facility footprint further.

## Why Work Here
- **Culture**: Described as "more than just a machine shop" — a collaborative, innovation-driven environment with a focus on solving complex manufacturing challenges.
- **Work Policy**: Hybrid workspace for some roles (combination of remote and on-site); many positions are in-office at the Woburn, UK location.
- **Benefits & Perks**:
  - Competitive medical, dental, and vision insurance
  - Life and long-term disability insurance
  - 401(k) with company match
  - Share Appreciation Rights (employee equity program)
  - Electric vehicle incentive + free EV charging
  - On-site gym
  - Maternity leave
- **Engineering Culture**: Engineers work across additive and subtractive processes, with opportunities to participate in the full product lifecycle from design to delivery.

## Sources
1. [rennscotmfg.com](https://www.rennscotmfg.com/) – Company overview, capabilities, and credentials
2. [rennscotmfg.com/careers](https://www.rennscotmfg.com/careers) – Benefits and equity program
3. [jobs.ashbyhq.com/rennscotmfg](https://jobs.ashbyhq.com/rennscotmfg) – Current open roles
4. [builtin.com](https://builtin.com/company/rennscot-mfg) – Employee count, hybrid policy, and office location

## Other roles at Rennscot MFG

- [Senior CNC Programmer & Machinist, 5-Axis](https://feeny.ai/job/senior-cnc-programmer-machinist-5-axis-rennscot-mfg-woburn-ne3js8d6nktn) — Woburn, MA
- [Materials Management Coordinator](https://feeny.ai/job/materials-management-coordinator-rennscot-mfg-woburn-jx7pv1kdsr6j) — Woburn, MA
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