Payroll and Accounts Payable Specialist
Trelliswaretechnologies · San Diego, California · Posted Jul 8, 2026
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TrellisWare launched in 2000 with an innovative culture striving to push technological boundaries in the area of wireless communications. We are now a worldwide leader in highly advanced algorithms, waveforms, and communications systems that range from small form factor radio products to fully integrated solutions.
At TrellisWare, we connect passion with purpose and together we make an impact- on our careers, our company, and the world. And you can too. If you love to innovate and collaborate in a dynamic environment where boundaries are being pushed, you belong at TrellisWare. Where the opportunity to serve is not a challenge but a gift. Where you’re never going alone. Because there’s too much at stake to go solo.
Our Accounting Team is seeking a hybrid Payroll and Accounts Payable Specialist to work with other team members in performing accounts payable and payroll tasks. Enhancing cohesiveness and maintaining team morale is a responsibility of all our team members, as is the ambition for self-improvement and talent development. Through this dedication to unity and professional advancement, each team member is directly impacting the successful outcome of TrellisWare’s deliverables and setting the tone for our core values of delivering excellence, pushing boundaries, and empowering people.
The essential duties and responsibilities include:
Obtain and maintain a thorough knowledge of company policies and practices related to payroll, accounts payable, expense reimbursement, purchasing and others to ensure consistent application and compliance.
Process biweekly and monthly payrolls with accuracy and confidentiality for 200+ employees, including multi-state and/or international.
Maintain employee records, process new hires, terminations, bonuses, commissions, and garnishments.
Review and audit expense submissions for accuracy, completeness, and adherence to corporate travel and expense guidelines.
Resolve discrepancies, communicate with employees regarding missing documentation, and coordinate approvals with management.
Utilize Concur to process expense reports, upload supporting documentation, track approvals, and maintain compliance with company policies.
Assist with the full-cycle accounts payable tasks including processing of vendor invoices and payment requests, employee expense reimbursements, corporate credit card transactions, and entering related information in the ERP system.
Coordinate with internal parties to ensure invoices and payment requests have appropriate approvals, accurately match applicable purchase orders and receiving information and assist with the resolution of discrepancies.
Monitor application of sales and use tax on company purchases.
Assist with payment processing.
Reconcile vendor statements to processed invoices and assist with resolving discrepancies.
Assist with maintaining vendor information in the ERP system.
Maintain proper documentation and record retention consistently with company policies and accepted accounting practices.
Collaborate and communicate effectively with employees and external contacts as needed.
Make recommendations for workflow and process improvements.
Report and review all abnormalities with supervisor.
Perform administrative and other duties as assigned.
Education and work experience requirements are:
Three or more years of recent experience performing similar duties.
Extensive experience processing biweekly and monthly payrolls required.
Bachelor’s, AA, or AS degree in accounting a plus.
Experience in governmental contracting, international payroll, QAD ERP system, ADP, Paylocity, and Concur (or similar expense management platforms) a plus.
To be considered for this position, you would need to meet, at a minimum, the knowledge, skills, and abilities listed here:
Proficiency in payroll systems, including payroll data entry, audits, reporting and troubleshooting.
Strong understanding of federal, state, and local payroll regulations, tax withholdings, wage and hour laws, and compliance requirements.
Skilled in payroll reconciliation, identifying discrepancies, and resolving payroll issues in a timely manner.
Knowledge of payroll tax filing, year-end processing, W-2 preparation, and payroll reporting requirements.
Always handles sensitive and confidential information with discretion.
Demonstrates strong organizational skills with an ability to effectively plan and prioritize, including taking initiative and meeting deadlines.
Self-motivated, efficient and detail oriented.
Strong problem-solving and written and verbal communication skills.
Proficiency with Microsoft Office Suite.
Works well independently and as part of a team.
Professional demeanor with a high degree of flexibility, strong process orientation and good judgment.
The physical demands described here represent those that must be met to successfully perform the essential functions of this job. Reasonable accommodation may be made to enable those with qual…