Principal Specialist, Procurement - BUYER (ONSITE)
Raytheon Co
Principal Specialist - Buyer
At RTX, the world largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world's most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.
Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today's mission and stay ahead of tomorrow's threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.
We are seeking a Principal Specialist - Buyer, to join our team. This role is responsible for preparing purchase orders and support documentation in compliance with departmental policies and FAR/DFAR/ITAR regulations. This person will have their own commodity of products to purchase and track delivery on. Key duties include issuing POs across multiple programs, managing all phases of procurement (from development through closeout), and ensuring supplier delivery commitments align with program schedules.
Your key responsibilities will be submitting compliant RFQs, perform price analyses, and negotiate for fair pricing, supporting proposals by requesting, analyzing, and evaluating supplier quotations, participating in program and supplier reviews, as well as continuous improvement initiatives, Build and maintain professional relationships with Customers and Suppliers, Assist team members with procurement activities in a high-volume, fast-paced environment. Advanced Excel skills to efficiently manage large data sets and requisition lines. Strong organizational and multitasking abilities to handle parallel program activities.
This role offers a dynamic environment where you'll contribute to strategic initiatives while ensuring procurement effectiveness and compliance.
This role will be ONSITE in Westford, MA.
NO RELOCATION WILL BE PROVIDED
What You Will Do
- Manage Purchase Orders from supplier selection to RFP/RFQ submission, quote receipt, analyzing quote, negotiating quote, documenting PO, and monitoring supplier issues and delivery.
- Actively monitor open orders, update status, and ensure that Operations and Program personnel are notified of any delivery date changes; escalate to expedite when necessary.
- Seek new sources of supply when necessary. This involves working closely with Supplier Quality and Engineering to complete necessary processes for adding a new, qualified supplier.
- Ability to successfully manage long-term supplier relationships.
Qualifications You Must Have
- Typically requires a University Degree in project management, business administration, engineering or equivalent experience and minimum 5 years prior relevant experience, or An Advanced Degree in a related field and minimum 3 years experience
- Two years of prior Buying Experience
- Working knowledge of government regulations (FAR/DFAR/ITAR/CUI).
- U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract.
Qualifications We Prefer:
- Ability to work closely with internal customers (Operations, PM, Engineering, Quality, etc.)
- Support Raytheon's initiatives and KPI's such as Supplier OTD, Cost Savings, and Continuous Improvement events
- Adherence to Supply Chain processes, standards, and operational plans in support of procurement goals.
- Proficient in SAP, Excel, Word
- Advanced Excel skills to efficiently manage large data sets and requisition lines.
- Experienced in SAP
- Able to solve problems and develop risk mitigation plans
- Strong negotiations skills
- Team oriented – must be an active participant
- Able to self-manage
- Strong work ethic, multi-tasking
- Domestic Travel may be required 10%
What We Offer
- WESTFORD, MA – ONSITE
- No Relocation Benefits will provided.
$82k - $164k
...Principal Specialist, Contracts At Raytheon, the foundation of everything we do is rooted in our values and a higher calling to help our nation and allies defend freedoms and deter aggression. We bring the strength of more than 100 years of experience and renowned...PrincipalContract workTemporary workWork experience placementFlexible hours- A leading manufacturing enterprise is seeking a Buyer responsible for the procurement of production materials, particularly electronic components. The... ...a Bachelor’s degree, is essential. The position is 100% onsite in Westford, Massachusetts. Candidates must possess excellent...Suggested
$86.8k - $165.2k
...create a safer, more secure world. We have an opening for a Principal Specialist, Contracts supporting our Global Intelligence Surveillance... ...portfolios. The successful candidate will be required to work onsite at the following RTX location: Westford, MA. What You Will...PrincipalContract workTemporary workWork experience placementWork at officeRemote workRelocationFlexible hours$83k - $133k
...Senior Production Buyer Locus Robotics is a global leader in warehouse automation,... ...Production Buyer, you'll lead production procurement to ensure a reliable, cost-effective flow... ...our production goals. This is an onsite role based out of our Wilmington, MA Corporate...SuggestedContract workWorldwide- ...Principal Specialist- Value Stream Program Manager (PM) Raytheon - Advance Products Solution (APS) is seeking a Principal Specialist- Value... ...Military Sales (FMS) programs. This position will be ONSITE in Westford, MA. What You Will Do Assist in management...Principal
- Cristek in Billerica, MA, is seeking an Associate Buyer/Planner to support purchasing and material planning activities. This role will focus primarily on purchasing while managing MRP within BEAS (SAP Business One) to ensure material availability. The ideal candidate will...
$86.8k - $165.2k
...Principal Specialist- Value Stream Program Manager (PM) Raytheon - Advance Products Solution (APS) is seeking a Principal Specialist- Value... ...Military Sales (FMS) programs. This position will be ONSITE in Westford, MA. What You Will Do Assist in management...PrincipalTemporary workWork experience placementFlexible hours$86.8k - $165.2k
...Collaboration, and Innovation. Learn More & Apply Now! Hybrid: Employees who are working in Hybrid roles will work regularly both onsite and offsite. Ratio of time working onsite will be determined in partnership with your leader. As part of our commitment to...PrincipalContract workTemporary workWork experience placementWork at officeRemote workFlexible hours- ...Completion (EAC) reviews, proposal costing and leadership reviews, staffing projections, and monthly metrics tracking. This position is onsite based in Tewksbury, MA. What You Will Do Responsible for cost, schedule and execution for Patriot Software and Training...PrincipalContract workWork at officeRelocation package
- ...defense company seeks a motivated Senior Program Cost Controls Specialist to support financial integrity in a collaborative environment.... ...mandatory due to government regulations. This position is based onsite in Tewksbury, MA, providing an excellent opportunity for skill...
- ...Senior Principal Systems Security Engineer (Anti-Tamper/Program Protection) – P5 At Raytheon, the foundation of everything we do is... ...design in a dynamic, agile development environment. This is an onsite position at Raytheon. What You Will Do Support implementation...PrincipalRelocation package
$65k - $75k
...Associate Buyer Are you looking for professional work experience? Do you want to be part of an organization on the cutting edge... ...Position Overview The Associate Buyer is responsible for procurement activities on Commercial Off-the-Shelf (COTS) parts. This role...Work experience placementLocal areaLong distanceFlexible hours$132.4k - $251.6k
...America Location: US-MA-TEWKSBURY-TB3 ~ 50 Apple Hill Dr ~ CONCORD BLDG, Tewksbury Tb3 300 Concord Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security...PrincipalContract workTemporary workWork experience placementWork at officeRemote workRelocation packageFlexible hours$95k - $110k
...Job Title: Buyer / Senior Buyer Salary Range: $95,000 - $110,000 Location: Bedford MA Overview We are... ...turnover and immediate business needs. This role is ideal for a procurement professional who can step in quickly with minimal ramp-up time...Permanent employmentContract workTemporary workLocal areaImmediate start$100k - $125k
A Purchasing position located in Bedford, Massachusetts, focusing on procurement of supplies and materials, requiring a BS/BA degree and a minimum of ten years of experience. Responsibilities include managing supplier relationships, ensuring timely order coverage, and maintaining...$132.4k - $251.6k
...TB1 ~ 50 Apple Hill Dr ~ ASSABET BLDG Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status... ...create a safer, more secure world. Raytheon is seeking a Senior Principal Systems Security Engineer (Anti-Tamper/Program Protection) - P5...PrincipalTemporary workWork experience placementWork at officeRemote workRelocation packageFlexible hours- ...looking for the newest member of its team. The Associate Buyer/Planner supports all purchasing and material planning... ...SAP Business One). Monitor inventory levels and ensure timely procurement of materials to support production. Communicate with suppliers...Permanent employmentFull timeContract workTemporary workFor contractorsWork at office
- ...Principal System Administrator LADS (Land & Air Defense Programs) Raytheon Digital Technology... ...& Infrastructure Tewksbury, MA – Onsite role (100%) US Secret Clearance... ...Tewksbury, MA, internally known as Principal Specialist, Information Workplace Services (P3),...PrincipalFull timeRelocation
$71k - $79k
...Job Summary The Procurement Manager will be responsible for leading and managing the end-to-end Procurement (P2P) process across the organization. The role requires strong coordination with internal stakeholders and external vendors to ensure timely availability...Long term contractWork at officeFlexible hours- Adecco is seeking a Buyer/Senior Buyer in Bedford, MA, to support procurement activities in the Medical Device sector. This is a contract position with a possibility of becoming permanent. The ideal candidate will have strong SAP experience and a background in manufacturing...Permanent employmentContract work
- ...individual and enrich our culture by considering varied perspectives because we believe people power progress. Join us as a HRIS Specialist, Principal and help us do what we do best: propelling business forward. Learn More about us We are seeking a highly skilled and...PrincipalCasual workWork at office
$23 - $33 per hour
...Buyer - Buyer II Location: North Reading, Massachusetts (Onsite) Employment Type: Contract Role Overview We are seeking a Buyer who will be responsible... ...inputs for monthly scorecards and present procurement data during quarterly business reviews. Plan...Hourly payContract work- ...A Day in Your Life at MKS: As a Procurement Specialist at MKS Instruments, you will partner with... ...This is a hybrid position requiring onsite presence Tuesday, Wednesday, and Thursday... ...with Procurement Service Center Buyers to meet and exceed production needs and...Permanent employmentWork at officeVisa sponsorshipWork visaRelocation package3 days per week
$80k - $100k
...Senior Buyer – Billerica, MA Manufacturer of precision electromechanical systems seeks an experienced Senior Buyer to own mechanical commodities procurement within a fast-paced, high-mix manufacturing environment. This is a strategic and hands-on role where you'll manage...Contract work$107.5k - $204.5k
...CONCORD BLDG, Tewksbury Tb3 300 Concord Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements:... ...for a candidate to join our world-class engineering team as a Principal Software Engineering Architect . The candidate is expected to...PrincipalTemporary workWork experience placementWork at officeRemote workRelocation packageFlexible hours$82k - $164k
...Principal Business Analyst (P3) For LtAMDS LRIP Program At Raytheon, the foundation of everything we do is rooted in our values and... ..., to Budgets and Planning. This role is being offered in an onsite capacity and is based on the needs of the business. Onsite work...PrincipalContract workTemporary workWork experience placementRelocation packageFlexible hours$86.8k - $165.2k
Principal Program Cost Controls Analyst Location: US-AZ-TUCSON-807 ~ 1151 E Hermans Rd ~ BLDG 807 Date Posted: 2026-04-13 Job Type: Hybrid U.S. citizenship required. Security Clearance: None/Not Required Responsibilities Management of EVMS and LOE contracts. Analysis...PrincipalContract workRelocation packageFlexible hours$72.5k - $80k
...Job Title: Buyer/Planner Job Description: Here at Entegris, we use advanced science to enable technologies that transform... ...our Materials team. This role is responsible for Bulk Material procurement activities and supports Direct Buyer and the Production...H1b- Financial Planning & Analysis (FP&A) Analyst (P3) to join the Global Patriot team within the Land and Air Defense Systems (LADS) Mission Area. This role is in a fast‑paced, dynamic, and challenging environment with an emphasis on forecasting, data analysis, and leadership...PrincipalTemporary workWork at officeFlexible hours
- Overview The Buyer is responsible for the procurement of assigned production and/or non-production (MRO) materials, with an emphasis on electronic components... ...be local to the Melbourne, FL area. The role is 100% onsite. Responsibilities Plan material purchases based on...Permanent employmentContract workTemporary workLocal areaFlexible hours
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Principal Specialist, Procurement - BUYER (ONSITE). Be the first to apply!
- mental health specialist Billerica, MA
- registration specialist Billerica, MA
- governance specialist Billerica, MA
- drug safety specialist Billerica, MA
- waste management specialist Billerica, MA
- lighting specialist Billerica, MA
- welding specialist Billerica, MA
- localization specialist Billerica, MA
- bank reconciliation specialist Billerica, MA
- deployment specialist Billerica, MA


