Senior Accountant

Simplex Trading • Chicago, IL

11h • Onsite

About The Position

Simplex Trading is seeking a motivated, detail-oriented Senior Accountant to join their Finance team in their Chicago, Illinois office. This is a full-time, in-office position. The Senior Accountant will play a critical role in maintaining the accuracy and integrity of the firm’s financial records, supporting regulatory compliance, and driving process improvements across the accounting function. The ideal candidate has experience in a broker-dealer or financial services environment, a strong command of GAAP, and a proactive mindset for identifying and implementing efficiencies. Founded in Chicago in 2004, Simplex is a leading, technology-driven, proprietary market-making firm. They work with advanced technology and software, focusing on innovation, automation, and data-driven analysis. Simplex also leverages its experience and expertise to make strategic investments and capitalize on opportunities in the venture capital markets with promising, early-stage financial and technology start-ups. The company emphasizes core values such as Collaboration, Ethics, Risk Management, and Diverse Experience and Opinions, fostering a collaborative and communicative culture through its in-office organization.

Requirements

• Bachelor’s degree in Accounting, Finance, or a related field
• 4-7 years of progressive accounting experience, preferably within a broker-dealer, proprietary trading firm, or regulated financial services environment
• Willing to sit for FINRA licensing exams to ensure regulatory compliance with the scope of the role
• Strong working knowledge of GAAP and financial reporting standards
• CPA license (active)

Nice To Haves

• Experience with options, derivatives, or equity securities accounting
• Exposure to process automation tools or accounting system implementations such as Claude, NetSuite or Intacct
• Public accounting experience

Responsibilities

• Own and execute the monthly and quarterly close process, including journal entries, account payable, account reconciliations, and variance analysis
• Maintain the general ledger and ensure accuracy and completeness of all financial data
• Coordinate with Accountant, operations and trading teams to reconcile trade invoicing
• Maintain working knowledge of applicable SEC and FINRA financial responsibility rules, including SEC Rules 15c3-1, and ensure the firm remains in compliance. Prepare monthly and quarterly FINRA reporting in a timely and accurate manner.
• Liaise with external auditors, regulators, and compliance personnel as needed
• Assist in the preparation of federal, state, and local tax returns and estimated tax payments
• Support the annual tax provision process and maintain tax-related workpapers and documentation
• Coordinate with external tax advisors on tax planning and compliance matters
• Monitor changes in tax legislation relevant to broker-dealers and proprietary trading operations
• Prepare accurate monthly, quarterly, and annual financial statements in accordance with GAAP
• Support the preparation of management reports and financial analysis for senior leadership
• Assist in the annual audit process, serving as a primary contact for external auditors and preparing audit schedules and supporting documentation
• Ensure financial reports are completed accurately and on schedule
• Own the firm's credit card spend and expense reimbursement program, including policy enforcement, employee communication and monthly reporting.
• Identify opportunities to streamline and automate accounting processes
• Participate in the evaluation and implementation of accounting systems and technology
• Document accounting policies and procedures and recommend improvements to enhance internal controls
• Collaborate cross-functionally with technology and operations teams on finance-related system initiatives

Benefits

• Excellent a la carte Medical/Dental/Vision (free employee coverage!)
• 401(k) match
• Generous parental leave
• The kitchen is stocked with snacks, and beverages
• Daily stipends for breakfast and lunch
• Tuition Reimbursement
• Employee Discounts: To gyms, national brands, and more!
• Access to a building gym
• Access to a full cafeteria
• Easily accessible to all public transportation
• Charity Match: We match up to $2,000 a year in donations to the charities of your choice!
• In-person happy hours, celebrations throughout the year, game nights, video game fun, and so much more!
• Health/dental/vision insurance
• 401(k) contributions
• Annual discretionary bonus

What This Job Offers

• Job Type: Full-time
• Career Level: Senior