Portfolio | Charles Costa

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Fulfilling the need for speed
Client
SRI International
From the home front to the battlefield, providing access to lifesaving care
Client
SRI International
How the seven deadly sins drive innovation
Client
The Huffington Post (featured)
How the seven deadly sins drive innovation Google is best known for their motto, “don’t be evil,” however most of their success can be attributed to […]
Demonstrating The Effects of Educational Content on Childhood Education
Client
SRI International
The 3 Laws of Marketplaces
Client
Kahuna
AI-based speech sentiment analysis technology
Client
SRI International
3 Ways You Can Develop a Competitive Advantage for Your Marketplace
Client
Kahuna
Preventing Marketplace Leakage
Kahuna Subject Line Postcard
Client
Kahuna
Know your options to pay eBay fees and selling costs
Client
eBay
Website
View website
This community post is designed to guide eBay sellers through the updated process of managing their fees and selling costs after eBay moved away from monthly […]
Airbnb Host Signup Landing Page – Homeowners and Renters
Client
Airbnb
Website
View website
For the Airbnb host signup landing page project, I played a crucial role in advising on content strategy with the goal of increasing user signups. Recognizing […]
How to setup eBay payouts to your debit card
This community announcement served as a crucial guide for eBay sellers, unveiling the capability to receive payouts directly to their debit cards. This change, allowing sellers […]
Spotting Audio-Visual Inconsistencies
Client
SRI International
SRI creates sophisticated, low-cost, fault tolerant, phased array radars providing unprecedented Geospace monitoring
Client
SRI International
A fresh approach to renters insurance policies
Client
StackCommerce + Lemonade
eBay Weekend Payouts Announcement
In this community post I spotlighted eBay’s significant shift to initiating payouts seven days a week, moving away from the traditional business-day-only schedule. This announcement marked […]
Building on open educational resources: helping students complete a degree without purchasing a single textbook
Client
SRI International
This cash management account lets you literally pay it forward
Client
StackCommerce + Aspiration
What Are Lumens And How to Use Them to Choose a Projector
Client
ViewSonic
Tax season: Will I get a 1099 from eBay? Where can I access it? Why didn’t I get one?
Client
eBay
This community post for eBay sellers, was written to help sellers navigate the complexities of tax reporting specifically regarding Form 1099-K. The objective was to clarify […]
Next-generation welding helmet gives unprecedented scope and clarity for better productivity, accelerated training
Client
SRI International
2020 Vision: SRI’s next decade
Client
SRI International
Trading places: Will robots take over the human workforce?
Client
SRI International
Seeing the things that matter most
Client
SRI International
G-Sync vs. FreeSync explained
Client
ViewSonic
Were you asked to link a Payoneer account for payouts? Here’s why.
In this eBay Community post, my objective was to inform international eBay sellers (those who do not have a dedicated eBay site – e.g., ebay.com, ebay.co.uk, […]
How to improve sales meetings
Building a translation agency that makes a difference
Client
Smartcat
Infographic: Getting paid on eBay
This infographic is a was a pivotal piece I helped create during eBay’s managed payments migration because payouts were a primary source of confusion during the […]
Understanding Your Marketplace Technology Stack
Client
Kahuna
Make Your Marketplace Thrive With This 1 Tip
Client
Kahuna
eBay managed payments: Registration Explainer Video
eBay managed payments: Registration Explainer Video – United States – June 2020 eBay managed payments: Registration Explainer Video – Canada – June 2020 eBay managed payments: […]
A modern approach to building inspections
Client
SRI International
Three ways to use messaging to optimize marketplace operations
Client
Kahuna, Sharetribe
Shedding light on the inner workings of the Sun
Client
SRI International
A talk that is out of this world
Client
TEDxSanFrancisco
TEDxSanFrancisco comprehensive event promo
Client
TEDxSanFrancisco
LA’s New Short Term Rental Law. What renters need to know.
Client
Letulet
SRI International Introduces XDR Welding Technology
Client
SRI International
How to Tell if an Accelerator is Right for Your Startup
Client
Envato
A socially conscious cash management account
Client
StackCommerce + Aspiration
Returning to eBay? Here’s how to get back to selling. – Post migration post
This educational post serves as a comprehensive guide for eBay sellers making their return to the platform after the managed payments migration, focusing on how they […]
Kahuna Autos Plus Postcard
Client
Kahuna
Verify your bank account using microdeposits
In this educational video, I took on the role of scriptwriter and editorial advisor to demystify the process of bank account verification for eBay sellers, focusing […]
eBay managed payments: overview explainer videos
Client
eBay
Managed payments: overview explainer video – United States Managed payments: overview explainer video – United Kingdom Managed payments: overview explainer video – Canada Managed payments: overview […]
The Future of Doxing in a World of Facial Recognition
Client
SitePoint
XEROX MADE TECHNOLOGY TO CATCH HOV LANE CHEATERS
This piece investigates Xerox’s development of sophisticated technology designed to combat the issue of HOV lane cheating. As a SnapMunk journalist, I delved into the technology’s […]
New California Legislation Paves the Way for Driverless Future
Four Ways to Boost Marketplace Transaction Volumes During the Holiday Season and Beyond
Client
Kahuna
YOU CAN BUY SINGLE-OCCUPANT SMOKING BOOTHS FOR OFFICE CUBICLES IN JAPAN
This article delves into the innovative response to smoking in the workplace within Japan, focusing on the introduction of single-occupant smoking booths for office cubicles. In […]
3 Digital Marketplace Challenges That Can Be Overcome Using Extreme Personalization
Are landlords covered by Airbnb insurance? Here’s the answer.
Client
Letulet
Facilitating aging in place through the practical use of advanced technology
Client
SRI International
Citizen Driven Medicine
Client
TEDxSanFrancisco
Understanding selling fees on eBay l eBay Payments Quick Tips
Client
eBay
In this explainer video, I took on the dual roles of scriptwriter and editorial advisor to demystify the concept of selling fees on eBay, with a […]
How to Enhance the Buyer and Seller Journey Across Your Digital Marketplace
Making the business revolution in low Earth orbit sustainable
Client
SRI International
This Fully Autonomous Lawnmower Is Uprooting Commercial Landscaping
Client
StackCommerce + SeedInvest + Graze
Localization in marketing — how to deliver the right message regardless of location
Client
Smartcat
Going against the flow How Translating Stars thrives on Smartcat in an adverse economy
Client
Smartcat
TEDxSanFrancisco afterparty promo email
LSP Marketing: how to effectively engage prospects
Client
Smartcat
Kahuna Subject Line One Pager
Client
Kahuna
Some marketing approaches to help LSPs stand apart from the competition
Developing the next generation of chemical detection systems for strategic situational awareness
Client
SRI International
eBay managed payments: Payouts explainer videos
Client
eBay
Managed payments: payouts explainer video – United States Managed payments: payouts explainer videos – Canada
Kahuna + Kahoot Case Study
Client
Kahuna
Changes to the eBay invoicing process – US sellers
Client
eBay
This community post was written to guide eBay users through a significant overhaul of the billing system, eliminating traditional monthly billing invoices and implementing a model […]
How and why organizations should unify their sales approach
Client
salesframe
Kahuna Monthly Marketplace News Roundup
4 Challenges Marketplace Marketers Face and the Solutions
Client
Kahuna
Driverless Car Ethics When Gut Decisions Are Made By Machines
Client
Traffic Safety Store
A brief introduction to quantum computing
Client
SRI International
Making learning relevant: infusing real-world experiences into the classroom for lasting college, career and life success
Client
SRI International
Boost bookings and outperform competitors with better branding
Client
Hostfully
This blog written for Hostfully, a leading property management software company, was designed to inform readers on how to use the platform’s robust features to develop […]
2019: The year in review
Client
SRI International
eBay Seller Update – Payments – Fall 2020
This section of my portfolio showcases my contribution to eBay’s Seller Update in Fall 2020, specifically focusing on the Payments segment. The primary objective of this […]
Kahuna + Mudah Case Study
Client
Kahuna
How to use your eBay earnings to purchase shipping labels
Client
eBay
Website
View website
This community post introduced a transformative feature for eBay sellers, enabling them to use their sales proceeds to directly purchase shipping labels. In crafting this guide, […]
Kahuna Marketplaces One Pager
Client
Kahuna
Kahuna + Curb Case Study
Client
Kahuna
Protect Yourself and Your Business From Social Engineering
Client
SitePoint
Reduce Churn for Good. A Checklist to Create a Successful Classifieds Marketplace
Client
Kahuna
Cavli Wirless Launches The First 5G Test Network in India
Airbnb for Professional Hosts: The Definitive Guide
Client
Home Share Pros
THIS CHESSBOARD MOVES PIECES ON ITS OWN SO YOU CAN PLAY ANYBODY IN THE WORLD OR NOBODY
Highlighting a remarkable innovation in gaming, this article covers a chessboard that autonomously moves pieces, allowing players to face opponents globally or play solo against an […]
eBay managed payments: Fees explainer videos
Client
eBay
Managed payments: fees explainer video – United States Managed payments: fees explainer video – Canada Managed payments: fees explainer video – Australia
Monthly Marketplace Article Roundup
Client
Kahuna
The Ethics and User Experience Behind Self Driving Cars
Client
SitePoint