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Senior-Level
Operations Leadership.When and How You
Need It.

Opteris Partners works with growth-stage companies, established private businesses, and owner-operators who need senior HR and operations leadership to navigate change, build scalable systems, and position their organizations for what's next.

Let's Talk.
Who We Are

Built for the Gap
Between Growth and Infrastructure

There's a gap that shows up at every business inflection point — whether that's rapid growth, a leadership transition, an acquisition, or a decision to sell. The people and operational challenges get harder, the stakes get higher, and the systems that worked at the last stage of the business stop working at the next one.

Opteris Partners was built for that gap. We bring senior HR and operations leadership to companies that need it most — without the cost, commitment, or ramp time of a full-time executive hire. We step in where the need is real and the stakes are high.

We work alongside leadership teams — not above them. Our goal is to deliver outcomes that hold up long after our engagement ends: systems that scale, processes that stick, and teams that are built to carry the work forward.

How We Engage

Three Ways to Work
With Opteris Partners

Fractional

Embedded ongoing leadership on a part-time basis. You get a senior operator inside your organization — present, accountable, and fully integrated — without the full-time cost.

Advisory

Strategic counsel for specific challenges. Designed for boards and founders who need an experienced perspective on people and operations decisions without day-to-day involvement.

Project-Based

Defined scope, timeline, and outcome for a specific need. Ideal when you know what needs to get done and want a senior leader to own it from start to finish.

Services

What We Do

Senior-level expertise across the areas that matter most to growth-stage companies building for what comes next.

Fractional HR & People Operations Leadership

For companies that need a senior HR leader but aren't ready — or don't need — a full-time executive in the seat. Whether you're scaling headcount, navigating a leadership transition, modernizing outdated people practices, or managing through organizational change, Opteris Partners steps in as your senior HR operator: building the systems, processes, and organizational foundation that let your business move forward.

Best for: Growth-stage companies, established private businesses, and PE-backed organizations that need senior-level HR execution without the full-time overhead.

Board Advisory

People and operations counsel for private company boards. As businesses grow and prepare for their next chapter — whether that's scaling, a transaction, or a leadership transition — the people infrastructure questions become board-level questions. Eric brings a senior HR executive's lens to the governance conversations that matter most: executive succession, compensation structure, talent risk, and organizational health.

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

AI & Operational Consulting

Practical guidance on getting more from the systems, tools, and technology your organization already pays for — and on thoughtfully integrating AI into HR and operations workflows in ways that actually hold up in practice. Most organizations are using a fraction of what their existing platforms can do. We help close that gap before recommending anything new.

Best for: Leadership teams and operators who want real operational improvement, not a vendor demo.

Exit Readiness & Operational Value Creation

For owner-operated businesses planning a sale in the next two to three years, the difference between a good exit and a great one often comes down to whether the business looks like it runs on systems — or whether it runs on the owner. Opteris Partners works with small business owners to implement the operational infrastructure, people systems, and documented processes that increase business value, reduce buyer risk, and make a transaction smoother for everyone involved.

Best for: Owner-operators of established small businesses who are serious about maximizing the value of what they've built before they sell.
Eric Terwilliger
About the Founder

Eric Terwilliger

Founder & Principal

Eric brings 20 years of HR and people operations leadership to Opteris Partners, with deep experience working inside scaling companies, private equity-backed businesses, and established mid-market firms across multiple industries. He has built and led people functions at organizations navigating rapid growth, complex change, and the operational demands that come with scaling.

He holds board advisory and fractional executive certifications, and works with founders, leadership teams, and boards who need a senior operator in their corner — not a consultant at arm's length.

He founded Opteris Partners to work with organizations at inflection points — companies that are growing, transforming, preparing to transact, or simply trying to build people and operational infrastructure that matches where their business is going. His clients range from growth-stage companies to established private businesses to owner-operators preparing for an exit.

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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