About this role
We are seeking a detail-oriented and organized Part-Time Accounting Assistant to support our general accounting team. This role will focus primarily on reconciling employee expense reports and assisting with the collection and reconciliation of outstanding Accounts Receivable (AR). The ideal candidate is dependable, analytical, and comfortable working with financial data while maintaining accuracy and confidentiality. Schedule: Part-Time (approximately 20–24 hours per week) About Alta Alta is a mission‑driven company working to mitigate climate change and advance safety and social justice by shaping sustainable, people‑centered communities. We bring together expertise across planning, design, engineering, education and encouragement programs, and community engagement to help communities thrive. Our work is grounded in the belief that how places are designed and experienced has a profound impact on equity, health, and opportunity—and that people should always be at the heart of those decisions. Founded in 1996, Alta was at the forefront of the active transportation movement and has spent nearly 30 years partnering with communities to imagine a more connected, resilient, and inclusive future. Today, with more than 225 staff across the United States and beyond, we are a global leader in creating environments that support everyday life, strengthen human connection, and respond to the challenges of a changing world. Alta offers the opportunity to collaborate across disciplines, contribute to meaningful work at every scale, and be part of a team committed to making lasting, positive change for people and the places they call home. Expense Report Reconciliation Review and reconcile employee expense reports for accuracy and compliance with company policies. Verify receipts, coding, approvals, and supporting documentation. Identify discrepancies and work with employees to resolve outstanding issues. Assist with month-end reconciliation of expense-related accounts. Maintain organized documentation and records for audit purposes. Other tasks Accounts Receivable Support Monitor and reconcile outstanding customer invoices. Contact clients regarding past-due invoices through email and phone in a professional manner. Research payment discrepancies and resolve billing issues in collaboration with project managers and accounting staff. Prepare aging reports and assist with AR follow-up activities. Other tasks