Careers at S3
one team wins
At S3 AeroDefense, a fulfilling career means being part of something bigger: contributing to the success of global military operators while growing both professionally and personally.
Whether your background is in sales, operations, logistics, communications, or engineering, a career at S3 offers the opportunity to make an impact. We foster a culture where hard work is recognized, initiative is encouraged, and people are empowered to lead in their roles.
With access to ongoing professional development, cross-functional learning, and opportunities for advancement, our employees find meaningful ways to contribute to S3’s mission of supporting aircraft readiness, and driving customer satisfaction around the globe.
At S3 aerodefense
your work matters
and so do you.
your work matters
and so do you.
joy h.
the s3 team
strength in our differences
S3 AeroDefense is powered by a team of exceptional individuals who represent the best in military aviation. Our staff is comprised of global citizens, many of whom are multilingual and multicultural, bringing a rich diversity of perspectives and experience to work every single day. Collectively, our team speaks more than 15 (yes, 15!) languages, reflecting the global reach of our business and the inclusive nature of our workplace.
We believe that diversity drives innovation, and that includes a strong commitment to gender equality. We’re proud to have women serving in senior leadership roles, at the director level and above, including on our board of directors. Many of our employees are also military veterans or join us through programs like SkillBridge, bringing real-world operator experience and mission-oriented discipline to our team.
Everyone here takes pride
in their work, and you feel empowered
to make real decisions that drive impact
in their work, and you feel empowered
to make real decisions that drive impact
zarina k.
the s3 team
supporting employees from day one
Our comprehensive benefits package is designed to support your health, well-being, and financial security, ensuring you can thrive both personally and professionally.
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Medical, dental, and vision insurance
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Mental health support / Employee Assistance Programs (EAP)
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Health Savings Account (HSA) or Flexible Spending Account (FSA)
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Wellness stipends or reimbursements
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Flexible hours / core working hours
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Summer Fridays
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Paid Time Off
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Paid holidays
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Paid parental leave (maternity/paternity/adoption)
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Professional development stipends
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Access to courses, certifications, and training
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Mentorship or coaching programs
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Company events and offsites
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Employee recognition programs
join our team
Grow with a team that’s redefining support for military aviation worldwide. Browse our open positions and submit your resume.
Job ID: S3-JD-63
Purpose of the Job:
Develops new business and grows and maintains existing business at acceptable margins. Ensures S3 AeroDefense, LLC is professionally and responsibly represented in the industry and that our organization meets the expected level of service, responsiveness, and quality objectives of the customer.
Reports to: Inside Sales Manager
Duties and Responsibilities:
- Executes sales strategy, sets sales objectives and annual forecast, and strives to meet them
- Develops new business opportunities to provide a foundation for continuous upward sales trends while meeting all profitability objectives
- Follows up on new contacts to determine whether a field sales call is necessary
- Develops marketing and business strategies, innovative processes, and programs to meet objectives which are consistent with a “customer-focused” high-performance sales organization
- Establishes professional and responsive relationships with customers to ensure total customer satisfaction and continued business
- Makes ethical and responsible pricing decisions
- Follows up with customers to ensure S3 AeroDefense is meeting or exceeding the service level
- Prepare and manage daily customer quotations and orders
- Ensure on-time order delivery
- Participate in tradeshows as needed to represent and promote the company
- Acts as a liaison between the customer and internal S3 team members to ensure all customer expectations are communicated, understood and met throughout the organization
- Is a responsible and cooperative team leader with other departments to address and resolve customer problems. Understands and works within S3’s policies and procedures.
- Adds a high level of technical product service and value to meet the goals of the assigned territories as well as the goals of the organization.
- Maintains up-to-date knowledge of the industry
- Other duties as required in support of the company and/or sales division
Requirements:
EDUCATION and/or EXPERIENCE
- Minimum of three years’ experience in the Sales Knowledge and experience in the Aerospace business preferred.
- Bachelor’s degree required
LANGUAGE SKILLS
- Ability to read, write, speak, and understand English. Other foreign language skills a plus.
JOB SKILLS
- Extensive knowledge of the aerospace business is preferred but not required
- Strong problem-solving skills to help resolve customer complaints or needs
- Excellent verbal and written communication skills.
- Strong customer service and interpersonal skills for dealing with different types of customers and clients
- Time management and multitasking skills to handle multiple tasks and customers
- Strong organizational skills and attention to detail
- Positive attitude
- Ability to write reports, proposals, business correspondence, and procedure manuals
- High energy and sense of urgency to meet internal and external customer expectations
- Highly motivated; possess the desire to set and meet high performance standards based on excellence for the benefit of the customer, the individual, team members, and internal customers.
- Proficient in Windows environment, including Microsoft Word and Excel
Training:
- Pentagon Basics
- Export & ITAR compliance
- Aerospace Industry Quality Training (Which includes QMS training, FAA 00 56, Traceability, 8130-3 documents, PAH’s, ESD, Suspected unapproved Parts, Shelf Life/LLP’s, AD’s, ATA Spec 300, PMA Parts, Direct Ship Authority, Repair Stations and Standard Terminology.
- 90 Day Probation OJT (Includes, Return Material Authorization (RMA), Adding Vendors, Purchase Order Creation, Approved Suppliers Electronic Document Management, Sourcing, RFQ, Research, Entering Vendor Quotes, Repair Order Change, Work Order Creation, Repair Purchase Order Entry, Teardown Report for Customers, Reading Manuals and Tech Data, Kit BOM
Job ID: S3-JD-29
Purpose of the Job:
Maintain and grow assigned customer accounts.
Reports to: Customer Service Manager
Duties and Responsibilities:
- Communicate with customers by phone, fax, and email daily
- Prioritize customer requirements and enter into system
- Attach customer original documents to sales quotes
- Coordinate and collaborate with Research to obtain vendor bids
- Quote customer on daily requirements
- Follow up with customer on quotations
- Coordinate customer quotation with internal departments, including Research, Accounting, and Quality
- Develop an understanding of customer’s product demands and trends
- Build customer relationship to maintain and develop additional business
- Complete tasks given by Sales Manager
Requirements:
- Positive attitude and attention to detail
- Excellent communication skills, both verbal and written
- Highly motivated, energetic, and success oriented
- Courteous, tactful, and possess excellent interpersonal and relationship building skills
- Must be highly organized and detail-oriented with the ability to work well under pressure
- Sales or account management experience required
- Proficient in Windows environment, including Microsoft Word, Excel
- Bachelor’s degree and/or 5-7 years related experience
- Foreign language skills required
Training:
- Pentagon Basics
- Export & ITAR compliance
- Aerospace Industry Quality Training (Which includes QMS training, FAA 00 56, Traceability, 8130-3 documents, PAH’s, ESD, Suspected unapproved Parts, Shelf Life/LLP’s, AD’s, ATA Spec 300, PMA Parts, Direct Ship Authority, Repair Stations and Standard Terminology.
- 90 Day Probation OJT (Includes, Return Material Authorization (RMA), Adding Vendors, Purchase Order Creation, Approved Suppliers.
Job ID: S3-JD-62
Purpose of the Job:
To successfully oversee contracts from drafting all the way to execution for the organization. To ensure that all contracts meet legal requirements and align with company goals. To negotiate terms, monitor compliance, and mitigate contract risks to safeguard the organization’s interests.
Reports to: President
Duties and Responsibilities:
- Management of new and existing contracts from birth to completion or expiration.
- Oversee repository
- Contract drafting, evaluation, negotiation, and execution
- Created new and updated existing contract templates
- Support and management for sales rep agreements and independent contractor agreements.
- Provides liaison support with OEM partners to ensure compliancy to customer contractual flow down requirements.
- Acting as an information source on organization policies and procedures pertaining to legal/contract requirements.
- Ensuring compliance with organization policies, procedures, planning, and billing systems.
- Create and implement policies and procedures
- Created Code of Conduct
- Oversee Foreign Corrupt Practices Act training and compliance company-wide
- Create FCPA program
- Conduct risk assessments and advise business stakeholders on risk and mitigation strategies
- Support Human Resources with day-to-day needs, review of documents and forms, ensure onboarding and separation policies are compliant with best industry practices
- Negotiating terms with suppliers and drawing up agreements that satisfy all stakeholders.
- Tracking accounts and managing relationships with 3rd parties.
- Working directly with global customers on behalf of the organization to achieve their mission readiness goals.
- Including foreign governments and militaries
- Communicate and present information to stakeholders about all contract-related matters.
- Oversee outside counsel in relation to trademark registration
- Advise staff on FAR/DFAR contract terms, compliance, and acceptance
Requirements:
- A minimum of 10 years of contract management experience required
- Bachelor’s degree in business, prelaw, law or a related field
- Juris Doctor degree
- Relevant training and/or certifications such as Certified Professional Contracts Manager or others
- License to practice law in WI
- A strong grasp of legal terms and conditions including up to date knowledge of current laws and international rules
- Strong understanding of Federal Procurement Regulations, including FAR (Federal Acquisition Regulation), DFARS (Defense Federal Acquisition Regulation Supplement), and Supplier Clauses
- An understanding of the AS9120, ISO9001:2015 standards
- Detail-minded, self-starter with the ability to work with others
- Excellent organizational skills
- Decision-making and problem-solving abilities essential
- Excellent analytical and negotiating skills a must
- Communication and Relationship management
- Proficient in Windows Environment, including Microsoft Word, Excel
Job ID: S3-JD-65
Purpose of the Job:
Support the Finance Department by performing a mix of accounting and financial analysis activities. This role ensures accurate and timely financial reporting, maintains strong internal controls, and provides actionable insights that help drive strategic and operational decisions.
Reports to: Director of Finance
Duties and Responsibilities:
Accounting and Reporting
- Prepare monthly financial statements (income statement, balance sheet, cash flow) at the segment and consolidated level in accordance with US GAAP.
- Complete standard monthly close activities, including account reconciliations, journal entries, and supporting documentation.
- Perform monthly bank reconciliations for all cash accounts and coordinate any necessary corrections.
- Compile and maintain work papers to substantiate account balances and ensure compliance with internal controls.
- Assist with compiling information for external audits and reviews; coordinate with auditors during fieldwork by providing schedules, explanations, and supporting documentation.
- Ensure compliance
Financial Analysis and Planning
- Assist in preparing segment-level and consolidated budgets; track and analyze variances against actual results.
- Prepare monthly and quarterly management reports, including metrics such as profitability by region, cash flow trends, and days sales outstanding.
- Support preparation of materials for Board of Directors presentations.
- Assist in preparation of weekly and monthly revenue forecasts.
- Prepare and submit required financial and contractual reports to external stakeholders (customers, suppliers, etc.) per agreement requirements.
- Perform ad-hoc financial modeling, analysis, and reporting in support of strategic initiatives.
Requirements:
- Bachelor’s degree in Accounting (required); CPA or Master’s in Accounting/Finance a plus.
- 1–3 years of experience in accounting, auditing, or financial analysis, including exposure to budgeting and reporting processes.
- Solid working knowledge of US GAAP and internal financial controls.
- Experience with ERP systems (Epicor, SAP, Oracle, or similar) and proficiency in Microsoft Excel and Word.
- Strong analytical skills, attention to detail, and ability to communicate financial information clearly.
- Capable of working independently and collaboratively in a fast-paced environment.
- Commitment to continuous learning and process improvement.
- Ability to manage multiple priorities while meeting deadlines.
Job ID: S3-JD-66
Duties and Responsibilities:
- Assist Logistics Coordinator with tracking, pickup, and delivery of inbound goods: including, but not limited to working directly with Customer Broker’s Traffic Teams, Customers’ forwarders, and/or express carriers such as FedEx, DHL, and UPS.
- Assist with collecting and preparing information for the submission of claims on lost and damaged shipments.
- Assist the Logistics Department in tracking, reporting, and filing documents relating to incoming shipments and customs regulations.
- Assist the Logistics Department in the review and approval of billing through Yooz.
- Assist the Logistics Department in preparing training and support for other Logistics initiatives.
- Preparation of reports and metrics for Logistics daily operations and projects to be reported to the Trade Compliance and Logistics Manager monthly.
- Develop, document and maintain appropriate processes for Logistics Library.
- Working with Sales and Supply Chain teams on on-time processing initiatives.
- Participate in varied projects covering all aspects of international logistics including but not limited to logistics, regulatory, and financial matters.
Requirements:
- Proficiency in Microsoft Word, Excel, and PowerPoint.
Training:
- Electronic document management
- Pentagon Basics
- Understanding of Incoterms
- General CBP, ITAR, EAR, and OFAC
Job ID: S3-JD-64
Position Summary:
We’re looking for a reliable and detail-oriented Marketing Operations Intern to support the day-to-day function of our marketing systems and help execute a variety of strategic projects. This is a hands-on role designed to give you real-world experience in digital marketing, events, design support, account-based marketing, and more. You’ll work closely with our lean, experienced team and gain exposure to marketing practices in a niche industry from the ground up.
Reports to: Senior Marketing & Communications Manager
Key Responsibilities:
- Manage and maintain marketing systems, databases, and trackers
- Assist with digital, design, and event marketing initiatives
- Support execution of account-based marketing campaigns
- Perform data entry and ensure CRM/marketing asset accuracy
- Assist with administrative tasks including scheduling, documentation, and organization
- Help with inventory and coordination of branded gifts and marketing assets
- Participate in team meetings and contribute ideas on process improvements and content development
- Support other special projects as assigned
What You’ll Learn:
- How to operate within a fast-paced, regulated B2B industry
- Fundamentals of integrated marketing campaigns
- Exposure to marketing automation platforms, CRM systems, and creative production
- Cross-functional collaboration across departments and with external partners
Qualifications:
- Currently enrolled in a degree program in marketing, communications, business, or a related field
- Strong organizational skills and high attention to detail
- Self-motivated, adaptable, and comfortable managing multiple priorities
- Familiarity with Microsoft Office (especially Excel) and basic design or project management (WordPress, Canva, SEMRush, Google Business, HubSpot, etc) tools a plus
- Interest in learning about marketing operations and military aviation is a plus
Schedule & Work Environment:
- 20 hours per week with flexible scheduling
- In-office with remote work opportunities
Job ID: Pending
Purpose of the Job:
Provide day-to-day customer service and support as directed by management.
Reports to: Director of Sales Operations, MR
Duties and Responsibilities:
- Communicate with customers by phone, fax, and email on a regular basis
- Enter customer RFQs (Sales Quotes)
- Obtain all end-use and end-user information from customers for export license requirements
- Enter customer orders and attach customer’s original documents
- Coordinate customer order flow down requirements with internal departments, including Operations, Accounting, Quality, Compliance and Shipping/Receiving
- Manage open Customer Work Orders and Sales Orders, updating ship dates and due dates as required
- Coordinate with Sales Directors, Account Managers, and Account Representatives to update customers with their open order reports
- Use critical thinking and advanced problem-solving skills and coordinate with Sales Directors, Account Managers and Account Representatives to effectively communicate to Customers: (a) on Company late deliveries, (b) the reasons for the delays, (c) and action plans to resolve or expedite the late deliveries
- Prepare outbound shipments to customers and consolidate shipments as allowed per the contracts or Customer authorization
- Complete relevant customer service tasks assigned by the supervisor
Requirements:
- Excellent Communication Skills, both verbal and written
- Excellent interpersonal and relationship-building skills
- Must be highly organized and detail-oriented with the ability to work well under pressure
- Proficient in the Microsoft suite of products, including Microsoft Word and Excel
- Bachelor’s degree and/or 1-3 years related experience preferred
Training:
- Pentagon Basics
- Export & ITAR compliance
- Aerospace Industry Quality Training, FAA 145, Traceability, 8130- 3 documents, ESD, Suspected Unapproved Parts, Shelf Life/LLP’s, AD’s, ATA Spec 300, PMA Parts, Direct Ship Authority, Repair Stations, and Standard Terminology
- Other Trainings as assigned
- 90-Day Probation OJT
Job ID: S3-JD-67
Purpose of the Job:
The Process Improvement Associate is responsible for analyzing business processes, identifying inefficiencies, and implementing data-driven improvements that enhance productivity, reduce costs, and strengthen operational performance. This role requires strong analytical skills, the ability to collaborate across teams, and a proven track record of driving measurable business impact through process optimization.
Reports to: Process Improvement Lead
Duties and Responsibilities:
- Analyze existing processes to identify gaps, bottlenecks, and improvement opportunities.
- Collect and interpret data to measure performance, uncover trends, and support fact-based recommendations.
- Develop and implement process improvement initiatives that reduce cycle times, increase efficiency, and lower operational costs.
- Standardize processes and create documentation to ensure consistency, compliance, and scalability.
- Collaborate with cross-functional teams (operations, quality, supply chain, etc.) to drive alignment and execution of process changes.
- Build and deliver reports, dashboards, and presentations to communicate findings and recommendations to stakeholders.
- Support automation and digitization initiatives that streamline manual tasks and improve data accuracy.
- Contribute to continuous improvement projects to enhance business outcomes.
- Present improvement outcomes and ROI to leadership, demonstrating impact on KPIs such as efficiency, quality, and on-time delivery.
Requirements:
- 1–2 years of professional experience in process improvement, operations excellence, business analytics, or a related field.
- Proven ability to deliver measurable business impact through process improvement initiatives (e.g., streamlining workflows, reducing cycle times, lowering costs, or improving KPI performance).
- Strong analytical and problem-solving skills with the ability to translate data into actionable insights.
- Experience with Excel and exposure to BI/analytics tools (SQL, Cognos preferred but not a must).
- Strong communication and presentation skills, with the ability to influence stakeholders at multiple levels.
- Attention to detail and commitment to accuracy in process analysis and documentation.
- Bachelor’s degree in Business Analytics, Operations, or related field.
- Proficient in Microsoft Office Suite (Word, Excel, PowerPoint).
Job ID: S3-JD-28
Purpose of the Job:
Develop and manage sales by servicing existing customers and targeting new prospects.
Reports to: VP of Sales
Duties and Responsibilities:
- Develop and execute sales and marketing strategies and business plans for the aftermarket business to achieve sales goals and expand market presence
- Create and provide the necessary marketing material to sell and market services and capabilities
- Participate in tradeshows as needed to represent and promote company
- Meet company business/sales goals for assigned territories
- Develop an understanding of customers’ product demands and trends
- Communicate with customers by phone, fax, and email
- Manage daily customer quotations
- Prepare and maintain reports for customers and management as needed
- Manage the responsibilities of Customer Services
Requirements:
- Extensive knowledge of the aerospace business and the customer base
- Ability to develop customer loyalty and business growth for the Aftermarket business
- Cultivating relationships, identifying opportunities, and account management skills critical
- Understanding of the global aerospace market and the aerospace aftermarket trends, issues, events and requirements
- Ability to write reports, business correspondence, and procedure manuals
- Excellent communication skills, both verbal and written
- Highly motivated, energetic, and success-oriented
- Courteous, tactful, and possesses excellent interpersonal and relationship-building skills
- Must be highly organized and detail-oriented with the ability to work well under pressure
- Sales or account management experience required
- Proficient in Windows environment, including Microsoft Word, Excel
- Bachelor’s degree and/or 5-7 years related experience
- Foreign language skills required
Training:
- Pentagon Basics
- Export & ITAR compliance
- Aerospace Industry Quality Training (Which includes QMS training, FAA 00 56, Traceability, 8130-3 documents, PAH’s, ESD, Suspected unapproved Parts, Shelf Life/LLP’s, AD’s, ATA Spec 300, PMA Parts, Direct Ship Authority, Repair Stations and Standard Terminology.
- 90 Day Probation OJT (Includes, Return Material Authorization (RMA), Adding Vendors, Purchase Order Creation, Approved Suppliers Electronic Document Management, Sourcing, RFQ, Research, Entering Vendor Quotes, Repair Order Change, Work Order Creation, Repair purchase order Entry, Teardown Report for Customers, Reading Manuals and Tech data, Kit BOM Building.
Job ID: S3-JD-41
Purpose of the Job:
The Supply Chain Analyst is responsible for sourcing and procuring components needed to fill customer demand, negotiating fair pricing, and ensuring timely delivery.
Reports to: Sr. Supply Chain Manager or Director of Supply Chain
Duties and Responsibilities:
- Develop & build relationships as the main point of contact for daily business execution with suppliers.
- Sourcing and placing vendor purchase orders to fill customer POs
- Monitoring PO delivery and expediting where necessary
- Negotiating pricing and terms with suppliers
- Maintain data integrity for procurement activities
- Monitoring overall supplier performance, providing feedback, and jointly creating action plans with the suppliers
- Support Strategic Business Reviews with suppliers
- Work closely with customer service, sales, and strategic alliance groups to understand customer demand and requirements
- Analyze demand and recommend strategic purchases when beneficial
- Recommend and support/lead improvements to optimize the overall process and drive greater efficiency.
Requirements:
Ideal candidates would have/be:
- Bachelor’s degree and/or 1-3 years related experience
- Working knowledge of MS Office and ERP systems
- Analytical mind with business acumen
- Detail-oriented and organized
- Excellent communication skills, both verbal and written