Benefits Specialist

Overview

Carollo Engineers is a leading engineering firm dedicated exclusively to water. For over 90 years, we've specialized in the planning, design, and construction of water, wastewater, stormwater, and reuse facilities, bringing innovative and sustainable solutions to the water sector's most complex challenges.

We work with water agencies, municipalities, utilities, research organizations, and private companies across various industries, including technology, manufacturing, and beyond. These clients choose Carollo because we employ some of the most knowledgeable and experienced professionals in the world. When you join our team, you'll work alongside industry leaders who are advancing the science of water, protecting public health, and building resilient communities.

Carollo's vision is to be the best water consulting firm and the best place for you to build your career. If you're passionate about making a difference in this critical field, we invite you to explore a career with Carollo.

This is a hybrid role that will require working in our Phoenix, Arizona office at least two days per week.

Responsibilities

• Performs customer service functions by responding to employee inquiries related to 401(k), Canadian Registered Retirement Savings Plan (RRSP), HSA, FSA, and reimbursement accounts

• Supports day-to-day retirement plan operations including enrollments, contribution changes, and coordination with recordkeepers and third-party administrators

• Coordinates and supports non-discrimination testing, audits, and annual compliance requirements for retirement plans

• Oversees reimbursement account programs (FSA, HRA, LSAs), including eligibility, claims administration coordination, and employee support

• Performs regular reconciliation of benefit-related accounts including 401(k) and RRSP contributions, HSA funding, and reimbursement account balances for accuracy between payroll, vendors, and internal systems

• Assists with HSA administration, including contribution tracking, IRS limit compliance, and coordination with vendors

• Supports benefit billing review, discrepancy resolution, and vendor invoice reconciliation for retirement, HSA, and reimbursement accounts

• Supports the 401(k) Committee with Plan governance, compliance, and continuous improvement of plan design and performance

• Assists with open enrollment activities including data validation, system setup support, employee communications, and issue resolution

• Supports compliance with applicable regulations including ERISA and IRS requirements as applicable to assigned programs

• Develops and maintains process documentation for benefit administration procedures and reconciliation practices for assigned programs

• Provides support with employee communications, including educational materials related to retirement and account-based benefits

• Partners with internal payroll and finance teams to resolve discrepancies that promotes timely and accurate benefit funding

• Assists with special projects and process improvements related to benefit program administration

Qualifications

• Bachelor’s Degree in Human Resources, Business, Finance or related field

• 5 years of mid-level Employee Benefit experience with an emphasis on retirement and account-based plans; with a total of 8-10 years of general benefit experience

• Working knowledge of 401(k) plan administration, RRSP administration, HSA/FSA programs, and related compliance requirements

• Experience with 401(k) administration, including testing and compliance processes

• Knowledge of HSA, FSA, and reimbursement account regulations and administration

• Knowledge of Canadian RRSP

• Experience working with third-party administrators, recordkeepers, or benefit consultants

• Experience working with HRIS, payroll interfaces, and vendor file management

• Ability to maintain confidentiality of sensitive employee and financial information

• Strong analytical and reconciliation skills with attention to detail and accuracy

• Ability to manage multiple tasks and deadlines

• Strong problem-solving skills, particularly related to data discrepancies and vendor coordination

• Ability to communicate complex benefit information clearly to employees

• Proficient in Microsoft Excel, Word, and HRIS systems

Preferred Qualifications

• Professional certifications such as CEBS, QKA, or related

EOE including disability/veteran (

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Job Locations US-AZ-Phoenix

ID 2026-4495

Category Human Resources

Type Full-time, Regular