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Assistant Controller- Mountlake Terrace, WA

Mindful Support Services

Mountlake Terrace, WA · Posted November 10, 2026

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  • Excel
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About the job

Job Type : Full-time, M-F

Location: Mountlake Terrace, Wa

Salary : $135,000-145,000k per year

About Mindful Support Services

We are a business-to-business support service for independent mental healthcare businesses, which helps providers service a growing client base. We provide administrative and organizational services to simplify the processes of lead-generation, marketing, billing and collecting payments from patients and insurers. Our teams support over 2,500+ independent mental health providers, across 7 states and virtually via Telehealth.

We have built the Mindful Therapy Group brand from the ground up with years of dedication to solving the complex processes of the healthcare landscape in innovative ways, creating a platform geared toward growth, and working to meet our mission of creating improved access to high quality mental healthcare.

About The Role

Mindful Support Services is seeking an experienced Assistant Controller to help scale and strengthen our accounting function during a period of continued growth. Reporting to the Controller, this role combines deep accounting and tax expertise with operational leadership, process improvement, and technology adoption.

This is not a maintenance-focused accounting role. We are looking for a leader who has successfully navigated growth, built scalable processes, introduced new systems and automation, and helped accounting teams evolve alongside a growing organization. The ideal candidate brings strong technical accounting knowledge, significant tax experience, and a passion for leveraging technology, automation, and AI-enabled tools to improve efficiency, reporting, and decision-making.

The Assistant Controller will serve as a key partner to the Controller and CFO, helping ensure the organization maintains strong financial controls and compliance while building the infrastructure needed to support future growth.

What Success Looks Like

In this role, you will:

Strengthen and scale accounting processes, systems, and controls to support a growing multi-state organization.

Lead complex accounting and tax initiatives while maintaining compliance and reporting accuracy.

Identify opportunities to automate and modernize accounting operations through technology and AI-enabled solutions.

Develop accounting team capabilities through coaching, process improvement, and operational leadership.

Partner cross-functionally to improve financial visibility, reporting, and decision-making.

Help create structure in an evolving environment while balancing strategic improvements with day-to-day execution.

Responsibilities

Accounting, Reporting & Tax Leadership

Coordinate and oversee monthly, quarterly, and annual close processes, ensuring timely and accurate financial reporting.

Prepare and review journal entries, account reconciliations, supporting schedules, consolidations, and financial statement workpapers.

Prepare financial statements, management reporting packages, variance analyses, dashboards, and ad hoc reporting.

Lead coordination of tax planning, tax compliance, and multi-state tax activities, partnering with external advisors as needed.

Monitor regulatory and tax developments and assess impacts to the organization

Research and evaluate technical accounting matters, preparing clear and well-supported documentation for complex transactions and accounting conclusions.

Support financial audits, tax filings, and other external compliance activities.

Team Leadership & Organizational Development

Provide leadership, coaching, mentorship, and technical guidance to accounting team members.

Review staff work, establish performance expectations, and support professional development

Foster a culture of accountability, collaboration, continuous improvement, and operational excellence.

Partner with finance leadership to support organizational growth and evolving business needs.

Systems, Automation & Scalability

Identify and implement process improvements that increase efficiency, strengthen controls, and improve scalability.

Lead or participate in system implementations, ERP enhancements, workflow redesigns, and finance transformation initiatives.

Leverage automation, reporting tools, and AI-enabled solutions to reduce manual effort and improve team capacity.

Evaluate emerging technologies and recommend solutions that enhance productivity while maintaining appropriate controls, documentation, security, and auditability.

Core Competencies

Technical accounting expertise and professional judgment

Tax compliance and tax planning

Financial reporting and internal controls

Process improvement and operational scalability

Technology, automation, and AI adoption

Organizational change leadership

Team development and coaching

Strategic problem-solving and analytical thinking

Cross-functional communication and partnership

Ability to thrive in a fast-paced, growth-oriented environment

Skills and Qualifications

Bachelor’s degree in Accounting, Finance, or a related field; an Accounting degree is preferred.

CPA license or active progress toward CPA licensure is preferred but not required.

Public accounting experience is strongly preferred.

Five or more years of progressive accounting experience, including monthly close, financial reporting, account reconciliations, technical accounting, and internal controls.

Two or more years of experience supervising accounting staff, reviewing the work of others, or leading accounting projects and processes.

Demonstrated ability to perform technical U.S. GAAP research and prepare accounting memoranda or other formal documentation supporting accounting conclusions.

Experience in healthcare or another regulated and transaction-intensive industry is preferred.

Demonstrated success implementing process improvements, workflow enhancements, system changes, or operational efficiencies.

Advanced proficiency with Microsoft Excel.

Experience with ERP accounting software such as Sage Intacct or NetSuite; experience with Power BI or similar reporting tools is preferred.

Experience with automation, systems implementation, AI tools, or technology-driven process optimization is preferred.

Compensation and Benefits:

75% employer covered Health, Dental & Vision benefits plan

401(k) savings plan with employer matching upon eligibility

8 paid holidays

15 PTO days accrued annually in first year

Professional and career development opportunities

Compensation evaluated with opportunities for advancement

Job Type : Full-time M-F,

Location: Mountlake Terrace, WA

Salary : $135,000-$145,000 annually, DOE

We are an equal opportunity employer with a progressive workplace based on teamwork, integrity, and customer service. We are committed to cultivating the long-term professional potential of our team. Applicants from all fields are encouraged to apply. Background check required. Come join a strong team making an impact in the service world of mental health!

It is a conflict of interest for an employee of Mindful Support Services to be a current client of Mindful Therapy Group. We request that individuals who are receiving clinical services at Mindful Therapy Group wait until their care is discontinued before beginning employment.