Marcel Kersey / Professional Portfolio + Independent Practice
I’m Marcel Kersey, an operations, customer experience and e-commerce professional helping brands build better digital experiences, customer support operations, fulfillment systems and live experiences.
My experience spans enterprise programs for Google, Pokémon GO, Amazon Leo, Audible, YouTube, Josh Cellars, Scopely and operations supporting 1,000+ Shopify brands through the marketplaces GMA Deals & Steals, View Your Deal, 40 Boxes and Shop Tam Fam.
The effect is intentional
Marcel S. Kersey
Founder & Principal, SID/EFFECT
I bring 10+ years of experience across customer experience, e-commerce, business operations, fulfillment, and live events. My work sits at the intersection of strategy and execution, helping brands turn ideas into systems and experiences that actually work.
I bring that same approach inside organizations as a team member and independently through SID/EFFECT, partnering directly with businesses and entrepreneurs on focused projects and ongoing support.
Client and program experience; names shown for work context only.
Explore my professional experience across customer experience, e-commerce, fulfillment, operations, project coordination and live events.
View experienceNeed help with Shopify, customer experience, e-commerce operations, fulfillment workflows or a digital project? Explore SID/EFFECT services and let’s talk about what you’re building.
View servicesEnterprise programs and independent client work spanning e-commerce, fulfillment, customer experience, live operations and creative digital projects.
The official Pokémon GO merchandise store featuring apparel, accessories, collectibles, and exclusive releases, with product launches coordinated around key moments across the global Pokémon GO community.
View project
An employee-exclusive merchandise store featuring branded apparel, accessories, and gear for Amazon Leo.
View project
An invite-only, points-based merchandise store featuring a curated collection of apparel and objects for the Gemini and broader AI builder community. The experience pairs a Root CMS-managed storefront with a custom backend supporting access codes, points, orders, inventory, and fulfillment.
View projectA decade across customer experience, e-commerce, fulfillment, project coordination and live-event operations.
&drop (Merch Division of ADVOC8)
&drop (Merch Division of ADVOC8)
Simplistic LLC
RAW:Natural Born Artists
GPG Events — New York, NY
Focused support for brands that need an experienced operator to build, fix, launch or improve the systems behind the experience.
Customer Experience
Operations
Shopify & E-Commerce
Events & Merchandise Operations
Creative & Digital
Tell me what you’re building, fixing, launching or trying to improve. I’ll help identify the right SID/EFFECT path.
One honest paragraph is enough. I’ll match the challenge to the most relevant SID/EFFECT service and show how Marcel can help.
Tell me about your projectA cross-functional operations perspective spanning the customer, the storefront, fulfillment and the room where the work happens.
Platforms I use to keep storefronts, support, fulfillment and project work moving.
Event operations, production coordination and merchandise execution — inventory flow, onsite logistics, setup, breakdown, staff coordination and event delivery.
Merchandise operations, inventory flow and onsite execution.
POS readiness, replenishment and staff coordination.
Production coordination, setup and breakdown.
Onsite logistics, reconciliation and reporting.
A secondary creative practice that strengthens how I think about audience, detail and execution — from concept development through production oversight.
No frameworks for the sake of frameworks. Just the sequence that keeps working.
Sit inside the workflow before changing it. Talk to the people doing the work, read the tickets, follow the order.
Prioritize the few breakpoints causing most of the cost, churn and chaos. Ignore the vanity work.
Document it, train it, automate the repeatable parts. A fix that needs a hero every week isn't a fix.
Measure the change in real terms: faster resolutions, cleaner inventory, better launches, calmer teams.
Whether you’re building a team, launching a store, improving your customer experience, fixing an operational problem or simply need an experienced set of hands on a project, let’s talk.
