- Reach audiences by segment or market
- Target age & gender demos
- Compare reach using GRP and CPP
- Review and submit e-orders
- Measure in-market demos
- Reconcile and approve e-invoices

In partnership with:




JamLoop is an all-screen video advertising company that enables integrated TV-to-Digital Video media buying with ease. Leveraging our proprietary technology and strategic partnerships, we help brands reach premium video audiences across all screens, including Smartphones | Tablets | PCs | OTT & Connected TV | Programmatic TV.

All video placements are brand-safe, transparent, and we guarantee performance.

Our Leadership Team has deep expertise in programmatic ad technology, traditional TV ad sales, and local media.




Agencies & Brands

Deliver micro-targeted or hyper-localized video messaging for audiences in each market.  Drive relevance, performance, and attribution measurement.  We work with agencies that are looking for a truly-integrated TV + Digital Video campaign delivery experience like never before.


Trading Desks

Access premium, 100% preroll inventory with guaranteed 70%+ viewability and completion rates across all screens, including Desktop | Mobile | Connected TV/OTT.


Local Media/Cable Groups

Extract incremental digital revenues from broadcast budgets.  Our unique integrations with MediaOcean and Strata enable local media sellers to easily offer their clients a digital video extension to complement traditional media buys.  Buyers can reach audiences across all digital screens using the existing media planning, buying, reporting and invoicing workflows for TV & Cable.



Performance Guarantees

We guarantee viewability and completion rates to exceed our client’s expectations and the industry norm.  Our proprietary optimization technology extracts only the best video placements by analyzing page- and placement-level data, both historical and predictive.  We’ll share the impression detail with you so you can see how we got there.

Data Targeting & Insights

We capture device data and transform it into meaningful audience targeting and insights.  If you’re a retailer and you want to know who visited your store post-campaign, we can do that using our “custom” segments.  If you’re a quick service restaurant and you want to target your competitor’s audiences, we can do that using our “conquesting” segments.  Our reporting is rich in detail like you’ve never seen before.

Programmatic Platform

We operate a “curated” programmatic buying & selling platform (DSP/SSP).  We work with public and private inventory sources to make the best video placements available to serious buyers.



(925) 322-0461

1701 North California Blvd., #72 Walnut Creek CA 94596




Leif Welch

Leif Welch, Founder & CEO: Leif is a 17-year digital media veteran, entrepreneur and investor, with deep expertise in digital advertising and technology licensing. Prior to founding JamLoop, he served as GM Mobile for Cox Media Group and ran Platform Sales for Adify, a digital ad platform provider acquired by Cox.  Leif co-founded and served as CRO for AdMission Corporation, a dynamic display ad provider sold to the Cobalt Group in 2008. Earlier in his career, Leif held various roles in business development for IPIX and Altavista, and spent five years as a financial analyst for Prudential.  Leif has an MBA from Northwestern’s Kellogg School of Management, a BSE in Systems Engineering and BA in Economics from the University of Pennsylvania.


George Giatzis

George Giatzis, Sales: George has over 25 years of ad sales experience in TV and emerging digital advertising products, a perfect combination for introducing JamLoop’s integrated “TV + Video” solution to the agency and brand community. Before JamLoop, George helped launch the Al Jazeera America TV & Web platforms. As an early member of Discovery Communications, he helped launch The Discovery Channel, TLC, Animal Planet and the first-ever suite of digital broadband channels. George ran West Coast Sales for Oxygen, a pioneer in TV/Web convergence, and led sales teams at emerging media companies Ecast (an interactive digital network), and SellPoint (E-commerce video network). He started his career in Spot TV sales for NBC. George holds a B.A. from Muhlenberg College with a dual major in Business & Economics.


Michael Vietri

Michael Vietri, Operations & Product: Michael manages the ad operations and client services teams. In addition, he helps guide the company’s product/platform vision.  Prior to JamLoop, Michael was VP Business Development at Canadian-based video network SourceKnowledge and VP Digital at Tribune Entertainment Media Group. Michael ran digital ad operations for both TC Transcontinental and Sympatico/MSN Media Operations, part of Canada’s largest “triple play” provider.


Kevin Gianatiempo

Kevin Gianatiempo, Advisor: With a media career that spans more than 20 years, Kevin brings a unique perspective to today’s digital landscape where offline and online worlds continue to collide. At SpotX, he managed programmatic platform partnerships and built SpotX’s reseller business. Prior to SpotX, Kevin was SVP Sales at TubeMogul, a video DSP, where he helped launch the company’s advertising agency business; he ran sales for VoloMedia, a podcast ad server and ad network that helped premium publishers monetize downloadable media. Earlier in his career, he held various sales executive roles at GameDaily, Tribal Fusion, Weather.com and DoubleClick. Prior to making the transition to digital media, Kevin worked in broadcast television and secured corporate sponsorships for NBA team, the Utah Jazz. An East Coast native, Kevin currently resides in The Bay Area with his wife and two teenage children.

Peter Ansel

Peter Ansel, Advisor: Peter has been at the forefront of the convergence between TV, cable, and interactive advertising.  As VP of Business Development for cross-screen media services provider Clearleap, he helped develop the TV Everywhere and dynamic VOD advertising services now used by HBO and Scripps Networks. As VP of Advertising Strategy for Move Networks, he worked with ABC, Fox and CW to accelerate online video advertising revenue. Earlier roles involved business development for dynamic ad provider, AdMission, and interactive TV provider, MetaTV (acquired by Comcast in 2005). Peter also worked on the business development team at search engine AltaVista. He holds a JD from the University of Miami School of Law and a BA in International Relations from UC Davis.