Jobs › Flex

Controller

Flex · Buffalo Grove, IL · Full time

Posted Sep 23, 2026 · We last checked this listing on Oct 6, 2026

Apply at Flex

Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about a site you've been the finance leader for. What did the general manager rely on you for?

What they are checking: Whether they have acted as a real business partner to a site leader, not just closed the books.

Tell me about a time you found an accounting error or control gap. What did you do?

What they are checking: Whether they act with integrity and fix root causes, not just the one entry.

How do you develop and lead a finance team at a manufacturing site?

What they are checking: Whether they build capable people who can run the function, since they lead the whole finance team.

Tell me about an action you drove that improved cash flow. What was the result?

What they are checking: Whether they proactively improve performance, as the posting asks, rather than only report it.

What would you do

How do you support customer quotes so the site wins work without losing money on it?

What they are checking: Whether they can balance competitive pricing against true costs and margin.

The GM wants to make a decision you think is financially risky. How do you handle it?

What they are checking: Whether they can push back with data while staying a trusted partner.

How do you explain financial results to operations managers who aren't finance people?

What they are checking: Whether they can make numbers useful to people running the floor.

About the work

How do you find the drivers behind a manufacturing site's profitability and cash flow?

What they are checking: Whether they understand plant economics like labor, scrap, utilization and working capital.

Walk me through how you would build a business case for a new piece of capital equipment.

What they are checking: Whether they can model returns and risks clearly enough for leaders to make a decision.

How do foreign exchange movements affect a site like this, and how would you manage that?

What they are checking: Whether they understand currency exposure, which the posting names as part of the role.

How do you run month-end close so it's accurate, on time and compliant with corporate policy?

What they are checking: Whether they have a disciplined close process and strong internal controls.

Practice this interview out loud.

Offer builds a real interview for this exact role at Flex from your resume and this job description, asks the questions one at a time, and tells you what landed. The first one is free.

Practice this out loud

The full job description

As published by Flex.

Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world. A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful, inclusive, and collaborative environment. If you are excited about a role but don't meet every bullet point, we encourage you to apply and join us to create the extraordinary. Job Summary 

 The Controller will be based in Buffalo Grove, Illinois, reporting to Director, Finance. Responsible for the total finance and accounting function of a site(s), this site leader is an integral member of the management team, acting as a critical business partner to the General Manager. They will lead and manage the finance team to ensure accounting and financial processes and procedures are in accordance with corporate and legislative requirements. What a typical day looks like: • Maximize financial returns by establishing and overseeing the financial aspects of the assigned site/business segment performance. • Proactively drive actions to improve profitability, cashflow and long-term performance. • Identify & build business cases for investments, evaluate & mitigates risks, understand foreign exchange and currencies impacts, support quotes & work with customers, drawing on strong business acumen to achieve high site performance. • Identify and develop opportunities for process improvements such as finance digitization efforts. • Ensure compliance and adherence to corporate policies, local country, and US GAAP, as well as tax, customs, and trade compliance. • Oversee the activities of the Accounting and Finance Department for the accurate and timely dissemination of financial management reports including, but not limited to, internal and external monthly financial statements, 12 month rolling forecasts and annual audits. • Establish and maintain systems and controls which safeguard company assets by verifying the integrity of all systems, processes, and data, and enhance the Company's value, including complying with the requirements of the Sarbanes Oxley Act. • Prepare reports that summarize and forecast company business activity and financial position in areas of income, expenses, and earnings based on past, present, and expected operations. • Drive HR Strategies, Talent Development, coaching, mentoring and culture actions to recruit and retain a qualified, motivated & high performing workforce. The experience we are looking to add to the Team: • Typically requires a Bachelor's degree in Finance, Accounting, or related field or equivalent experience and training. • A background in manufacturing/cost accounting is preferred. • Typically requires a minimum of 8 years of related experience. RM21 What you'll receive for the great work you provide: • Full range of medical, dental, and vision plans • Life Insurance • Short-term and Long-term Disability • Matching 401(k) Contributions • Vacation and Paid Sick Time • Tuition Reimbursement 
 Application Deadline: Applications for this job position will be accepted for at least five days following the job posting start date below and continuing until the end date below or until the position is filled. This posting may close sooner due to application volume. Job Posting Start Date 09-23-2026 Job Posting End Date

 The base pay range for this position is provided below. The final base rate offered will be determined using job-related, non-discriminatory criteria, including but not limited to experience, qualifications, geographic location, education, external market data, and internal equity. $108,100.00 USD - $148,700.00 USD Annual Job Category Finance Relocation: Eligible for domestic and international relocation Is Sponsorship Available? Yes Flex is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email accessibility@flex.com and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Flex, you must complete the application process first).

Apply at Flex