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Senior HR Leadership
That Moves the BusinessFrom the Company You've Built,
to the One You're Building.

Opteris Partners works with founder-led companies, established private businesses, and owner-operators who need senior HR leadership without making a full-time executive hire. We strengthen the people systems, workflows, and accountability structures that drive better execution across the business.

HR leadership  •  operational improvement  •  AI where it creates real value

Let's Talk.
Who We Are

Built for the Gap
For Companies That Need to Transform

As businesses grow, the people and execution problems get harder. Hiring becomes less consistent. Accountability gets murkier. Owners and executives spend too much time compensating for systems that no longer fit the business.

Opteris Partners was built for that gap. We provide senior-level HR operations leadership to companies that need better structure, stronger people systems, and more efficient workflows that adapt with you, without the cost or commitment of a full-time executive hire.

Our work often starts in HR, but it does not end there. We use people operations as the leverage point to improve how the business actually runs: clearer roles, better processes, stronger management discipline, and practical technology that reduces manual work and supports scale. That includes AI. When it is the right tool for a workflow, a reporting problem, or a manual process that should not still be manual, we know how to implement it in ways that actually get used. We build solutions designed to grow with the business, not just solve the immediate problem. The goal is always infrastructure that holds up after the engagement ends and a relationship that does not have to.

In most cases, the biggest gains don't come from new tools. They come from better use of what's already there, and from building the organizational capability to sustain that improvement long after the engagement ends.

How We Engage

Three Ways to Work
With Opteris Partners

Fractional HR Operations Leadership

Embedded ongoing leadership on a part-time basis. You get a senior HR operations leader inside your organization: present, accountable, and focused on improving hiring, performance, structure, and day-to-day execution. The best fractional engagements do not just fix what is broken. They build what is needed for what comes next.

Board Advisory

Strategic counsel for founders, boards, and leadership teams making high-stakes people and organizational decisions. Designed for businesses that need an experienced perspective on talent, leadership, and execution risk without day-to-day involvement.

Project-Based Optimization

Defined scope, timeline, and outcome for a specific need. Ideal when you need a senior leader to redesign a workflow, improve a critical people process, implement practical AI, or stabilize execution around a change initiative.

Services

What We Do

Our work starts with HR and people operations, then extends into the systems, workflows, and management discipline that improve performance across the business. AI is part of that conversation when it is the right tool for the problem.

Fractional HR & People Operations Leadership

For companies that need a senior HR leader but are not ready for a full-time executive in the seat. Whether you are scaling headcount, navigating change, modernizing outdated people practices, or improving management discipline, Opteris Partners steps in to build the systems, processes, and organizational foundation that let the business move forward more effectively.

Best for: Founder-led and established private businesses that need senior-level HR leadership with an operational lens, without the full-time overhead.

Board Advisory

People and organizational counsel for boards, founders, and leadership teams. As businesses grow, prepare for a transaction, or work through a leadership transition, people infrastructure becomes a strategic issue. Eric brings a senior HR operations lens to the conversations that matter most: executive succession, organizational design, talent risk, leadership effectiveness, and execution readiness.

Best for: Private company boards and founders who want an experienced people and organizational voice at the table.

Systems, Workflow & AI Optimization

Practical guidance on getting more from the systems, tools, and technology your organization already pays for. We redesign inefficient workflows, improve process consistency, and integrate AI where it actually reduces manual work and strengthens execution, especially across HR and adjacent business operations. AI is not the default answer here. It is a specific tool for specific problems where it creates measurable improvement.

Best for: Leadership teams that want measurable efficiency gains, not generic AI advice or another piece of software.

Exit Readiness & People Infrastructure

For owner-operated businesses planning a sale or transition, the difference between a good outcome and a stronger one often comes down to whether the company looks like it runs on systems or on the owner. Opteris Partners helps strengthen the people infrastructure, documented processes, and management rhythms that reduce buyer risk and make the business more transferable.

Best for: Owner-operators who want to improve transferability, reduce owner dependency, and increase the value of what they have built.
Eric Terwilliger — Founder, Opteris Partners
About the Founder

Eric Terwilliger

Founder & Principal

Eric brings 20 years of HR and people operations leadership to Opteris Partners, with deep experience inside scaling companies, private equity-backed businesses, and established mid-market firms across multiple industries. Over the past decade, he has led HR operations at three different companies, helping leadership teams improve hiring efficiency, strengthen performance management, and build systems that support growth and change.

He holds board advisory and fractional executive certifications, and works with founders, leadership teams, and boards who need a senior HR operations leader in their corner, not a consultant at arm's length. He has developed serious working fluency with AI as an analytical and operational tool, and helps leadership teams think through where it creates real value versus where it creates noise.

He founded Opteris Partners to help businesses at inflection points: companies that are growing, transforming, preparing for a transaction, or trying to build people infrastructure that matches where the business is going. His work starts with HR and people operations, then expands into workflow improvement, AI implementation, and the change management that makes those improvements stick.

Board Advisory Certified
Fractional Executive Certified
Based in Boston · Works Nationally
20 Years of HR & People Operations Leadership
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Get in Touch

Let's Talk.

No pitch deck. No long intake form. Just a direct conversation about what you're working on and whether we're the right fit.

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