Thomas Siedleck
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Thomas Siedleck Email & Phone Number

Accounting Manager at Vonachen Group
Location: Peoria Metropolitan Area, United States 5 work roles 2 schools
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✓ Verified August 2026 3 data sources Profile completeness 100%

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Current company
Role
Accounting Manager
Location
Peoria Metropolitan Area, United States
Company size

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Quick answer

Thomas Siedleck is listed as Accounting Manager at Vonachen Group, a with 476 employees, based in Peoria Metropolitan Area, United States. AeroLeads shows a matched LinkedIn profile for Thomas Siedleck.

Thomas Siedleck previously worked as Results-Oriented Manager Finance / Business Unit Controller | Expertise in Financial Analysis & Accounting Operations at Vonachen Group and Manager Finance / Business Unit Controller at Lexisnexis Marketing Solutions. Thomas Siedleck holds Master Of Business Administration (M.B.A.), Finance, 3.7/4.0 from Keller Graduate School Of Management.

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Email format at Vonachen Group

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Vonachen Group

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Profile bio

About Thomas Siedleck

“The only way to do great work is to love what you do.”I am a high-integrity finance and accounting professional who most recently was the Manager of Finance / Business Unit Controller at LexisNexis Marketing Solutions, a $48 million business in Peoria. My expertise includes financial analysis, financial modeling, accounting, forecasting, budgeting, cost accounting, process improvement, project management, and team leadership.I have been successful because of my exceptional financial, communication, and people skills. I understand the foundational nature of accounting, how to analyze financial & operational results, and how to communicate effectively with people across an organization in order to solve problems that hinder organizational growth and success.Much of my recent work experience was focused on developing methodologies to analyze product, service, and client level profitability that led to actions to discontinue low-margin products, implement pricing changes during client contract negotiations, and outsource select operations which saved $727K annually. Equipped with an analytical mind, keen problem solving skills, and financial acumen, I constantly endeavor to deliver results and exceed expectations.My skills listed below are transferable across any industry:• Financial Analysis• Operational Analysis• Financial Modeling• Financial Reporting • Forecasting & Budgeting• Strategic Planning• Accounting• Standard Cost Accounting • Cost Control & Reduction • Accounts Receivable & Accounts Payable Management• Accounting Close Process• Purchasing• Fixed Asset Management• Pricing & RFP Responses• Process Improvement • Project Management • Discounted Cash Flow • GAAP & SOX Compliance • Team LeadershipContact me by calling 309-229-6151 or sending an email to siedleck@frontier.com.

Listed skills include Financial Analysis, Operational Analysis, Financial Modeling, Financial Reporting, and 33 others.

Current workplace

Thomas Siedleck's current company

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Vonachen Group
Vonachen Group
Accounting Manager
Peoria Metropolitan Area
Employees
476
AeroLeads page
5 roles · 27 years

Thomas Siedleck work experience

A career timeline built from the work history available for this profile.

Accounting Manager

Vonachen Group

Peoria, Il, Us

Results-Oriented Manager Finance / Business Unit Controller | Expertise In Financial Analysis & Accounting Operations

Peoria Metropolitan Area

Accounting Manager

Vonachen Group

Peoria, Illinois

Manager Finance / Business Unit Controller

Peoria, Illinois

Led accounting & finance department of $48M business unit managing 4 employees in client billing, accounts receivable, accounts payable, cost accounting, monthly close process, financial analysis, reporting, modeling, forecasting, and budgeting. Analyzed monthly entity, product, service, and client financial results and presented recommendations to increase profit via cost reduction, outsourcing, and productivity improvements to VP of Finance.Accomplishments:• Implemented cost accounting system to determine labor, manufacturing, and overhead costs for 57 products and services; used results to develop standard pricing that enabled faster sales response time to prospective clients.• Analyzed product, service, and client level profitability leading to actions to discontinue low-margin products, implement pricing changes during client contract negotiations, and outsource select operations which saved $727K annually.• Teamed with product management group and successfully launched five new products which generated $600K of new revenue.• Measured key revenue and cost metrics against budget and adjusted monthly forecasts, developed financial models to analyze complex business problems, and performed lease vs. buy analysis on fixed assets. • Worked with sales team on customized pricing proposals and multimillion-dollar RFPs for State Farm, Allstate, Farmers, GEICO, Progressive, and other companies. • Converted division’s billing system from Oracle to a proprietary system with zero negative impact to revenue, accounts receivable, or client satisfaction.• Optimized motivation of sales team by collaborating with Sales VP on customized commission plans tailored to individual experience, client portfolio, and product focus.• Consolidated three general ledgers into one. Absorbed accounting work of two eliminated locations into Peoria office with no staff increase via automation and process improvement.

2006 - Sep 2016

Manager Client Engagement

Peoria, Illinois

Led account management team of 8 employees in daily interaction with external clients and completion of their marketing campaigns ($6M annual revenue). Responsible for coordinating work with multiple departments, managing conflicting priorities, and ensuring "right and on-time" execution of client projects. Additionally, managed 6 employees in operations department of collection agency business ($6M annual revenue). Accomplishments:• Won ChoicePoint's "Gorilla Award" for outstanding performance for successful effort to sign $2 million life insurance client.• Delivered significant improvement to “right and on-time” client project execution from 89% to 98%.• Increased number of completed client projects per year by 43% from 780 to 1,116.• Boosted efficiency of collection agency business while reducing staff by 50% by converting employee-answered inbound telephone calls to automated IVR and implementing scanning technology to electronically process 8K pieces of inbound mail per week.

2000 - 2006 ~6 yrs
2 education records

Thomas Siedleck education

Master Of Business Administration (M.B.A.), Finance, 3.7/4.0

Keller Graduate School Of Management
FAQ

Frequently asked questions about Thomas Siedleck

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What company does Thomas Siedleck work for?

Thomas Siedleck works for Vonachen Group.

What is Thomas Siedleck's role at Vonachen Group?

Thomas Siedleck is listed as Accounting Manager at Vonachen Group.

Where is Thomas Siedleck based?

Thomas Siedleck is based in Peoria Metropolitan Area, United States while working with Vonachen Group.

What companies has Thomas Siedleck worked for?

Thomas Siedleck has worked for Vonachen Group, Lexisnexis Marketing Solutions, and Choicepoint Precision Marketing Llc.

How can I contact Thomas Siedleck?

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What schools did Thomas Siedleck attend?

Thomas Siedleck holds Master Of Business Administration (M.B.A.), Finance, 3.7/4.0 from Keller Graduate School Of Management.

What skills is Thomas Siedleck known for?

Thomas Siedleck is listed with skills including Financial Analysis, Operational Analysis, Financial Modeling, Financial Reporting, Forecasting, Budgeting, Strategic Planning, and Accounting.

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