Selected Work
Dive into my key projects—each one includes a visual gallery and more info.
Contextual Engine (AI/NLP)
AI/NLP
Contextual Targeting
Microsoft Invest
Spiketrap
PMP
Custom Ad Server & Player
Ad Server
VPAID
IMA3
Video Ads
Product Development
Codeless QA Automation Stack
QA Automation
Selenium
Appium
Ad Quality
DevOps
Programmatic Skin Ad Format
Ad Formats
DCO
Programmatic
Sizmek
Creative Tech
New World - Creative & Media Strategy
Adobe Animate
Adobe Photoshop
JavaScript
Google Ad Manager
Xandr
Lost Ark Launch - Media Buying & Video / Mobile creative production
Xandr
Google Ad Manager
Mobile Advertising
Mobile Ad Campaign
The Trade Desk
U.S. Launch of Genshin Impact on prime gaming Direct & Programmatic
Xandr
The Trade Desk
Google Ad Manager
Ad Server
Rich Media
NBA2K League Live Stream Promotion
Twitch
The Trade Desk
JavaScript
Ad Server
Video Ad
For Honor Game launch - Programmatic Homepage Takeovers
JavaScript
Node.js
Google Cloud Platform
Ad Server
Rich Media
Robin Hood, Gamified Homepage Takeover Ad for movie release | IGN
Animated Banner Ad Design
Game Development
Animated Banner Ad
Rich Media
Game Development Bug Fix
Forza Horizon 4 Xbox - Premium Interscroller Creative Production
Mobile Ad Campaign
Mobile Advertising
Gaming
Rich Media
JavaScript
Uplive Streaming App Promotion - in app campaign
Mobile Ad Campaign
Mobile Advertising
App Store
TikTok Ad
Twitter/X Ads Manager
Netflix Umbrella Academy | Gamified Homepage Takeover | IGN
In-Game Advertising
Game Mechanics
Media & Entertainment
Rich Media
Animated Banner Ad
John Wick 3 Parabellum - Interscroller and Homepage Takeover | IGN
Rich Media
Animated Banner Ad
Responsive Design
Mobile Ad Campaign
Paid Media
Mavs GG Tailgate Party Live Stream Promotion
Twitch
Video Ad
Rich Media
Streaming Platform
Streaming Software
MiO Summer of Gaming Campaign
Xandr
The Trade Desk
Google Ad Manager
Rich Media
Video Ad
BagelBites Social Media Campaign, Media Buying, Creative Formatting
Facebook Advertising
Instagram Ad Campaign
TikTok Ad
Reddit Marketing
Twitter/X Marketing
Animated Rich Media Ads
Adobe Animate
Adobe Illustrator
Adobe Photoshop
JavaScript
Animated Banner Ad
Mavs GG 2k Draft Promotion and Rich Media Production
Google Web Designer
Google Ads
The Trade Desk
Animated Banner Ad
Rich Media
Best Buy Gaming, Media Buying, Rich media production, brand safety
Xandr
The Trade Desk
Google Ad Manager
Mobile Advertising
Display Ad
Interactive Video ads (Vpaid) Philips
Video Ad
Video Ad Campaign
Video Advertising
Xandr
Rich Media
Best Buy Oculus - Media Buying, Brand and Sentiment Safety
Adobe Animate
Adobe Photoshop
Xandr
Mobile Advertising
Animated Banner Ad Design
Godzilla II - Immersive Homepage Takeover IGN
Canvas
CreateJS
Adobe Photoshop
Animated Banner Ad
Animation
Merch Drop Promotion across social, direct, programmatic
Twitter/X Marketing
Facebook Ads Manager
Xandr
Google Ad Manager
The Trade Desk
DC AquaMan - Animated homepage Takeover / Interstitial | IGN
Animated Banner Ad
Animated Banner Ad Design
Video Ad
Ad Creative
Ad Server
Campaign Management and Media Buying via proprietary PMP
Rich Media
Display Ad
Adobe Animate
Xandr
Video Ad
Custom Google Web Designer Components
JavaScript
Dynamic Ad Setup
Dynamic Product Ad
Google Web Designer
Rich Media
Certifications & Accreditations
Professional Credentials
A selection of my industry-recognized certifications.
| Badge | Certification | Issuer | Issued | Skills / Notes |
|---|---|---|---|---|
 | Xandr Monetize: Monetize SSP Certificate | Xandr | Jun 2022 | Technical Project Management Campaign Management Digital Marketing Strategy Press Advertising |
 | The Trade Desk Edge Academy Certified: Trading Essentials | The Trade Desk | Jun 2022 | Campaign Management Video Advertising Technical Project Management Digital Marketing Materials Digital Marketing Strategy Facebook Marketplace |
 | The Trade Desk Edge Academy Certified: Marketing Foundations - Legacy Badge | The Trade Desk | Jun 2022 | Campaign Management Press Advertising Digital Marketing Strategy Digital Marketing Audience Targeting Video Advertising |
 | The Trade Desk Edge Academy Certified: Data-Driven Planning | The Trade Desk | Jun 2022 | Audience Targeting The Trade Desk Information Analysis Video Advertising Facebook Marketplace Data Analysis Campaign Management |
 | Tag Generator | DoubleVerify | Jun 2022 | Ad Tagging Verification Trafficking Ad Operations |
 | Social Solutions | DoubleVerify | Jun 2022 | Social Media Advertising Brand Safety Viewability Fraud Prevention |
 | Private Marketplace Essentials | Basis Technologies | Jun 2022 | Campaign Management Technical Project Management Digital Media Project Management Real-Time Bidding Project Workflows |
 | DV Authentic Attention™ | DoubleVerify | Jun 2022 | Attention Metrics Ad Engagement Performance Analysis Viewability |
 | Data Essentials | Basis Technologies | Jun 2022 | Audience Targeting Campaign Management Classifieds Posting Advertisement Demand-Side Platform Press Advertising Digital Media |
 | Contextual Targeting Essentials | Basis Technologies | Jun 2022 | Campaign Management Paid Media Technical Project Management Digital Media Advertising Demand-Side Platform Digital Signal Processing |
 | Xandr Invest: Invest DSP Certificate | Xandr | May 2022 | Demand-Side Platform Programmatic Buying Campaign Setup Ad Trafficking |
 | The Trade Desk Edge Academy Certified: Executive Program - Legacy Badge | The Trade Desk | May 2022 | Video Advertising Digital Marketing Materials Mathematical Optimization Digital Marketing Strategy Digital Marketing |
 | Microsoft Advertising Programmatic Badge | Microsoft Advertising | May 2022 | Video Advertising TV Advertising |
 | Quality Analytics | DoubleVerify | Feb 2022 | Data Analysis Ad Verification Reporting Media Quality |
| Programmatic Solutions | DoubleVerify | Feb 2022 | Programmatic Advertising Ad Fraud Viewability Brand Safety |
 | IQ Blueprint | DoubleVerify | Feb 2022 | Ad Verification Media Quality Campaign Optimization Analytics |
| DV Pinnacle | DoubleVerify | Feb 2022 | Ad Verification Brand Safety Fraud Measurement Viewability |
 | Sizmek DSP Accreditation | Sizmek, Inc. | Sep 2018 | Demand-Side Platform Ad Serving Campaign Management Ad Trafficking |
Completed Gigs
AdOps Ninja Needed: Build & Tune a Google Ad Manager + Prebid Header-Bidding Stack for 150k Site
May 28, 2025 - Jun 8, 2025
No feedback
$600.00
Fixed price
Publisher Programmatic Advertising Monetization Strategy and Setup - GAM, OpenX, Prebid, etc.
Jan 25, 2025 - Mar 31, 2025
5.0
"DJ is both incredibly knowledgeable in the field of programmatic advertising and a skilled programmer. Throughout our engagement, he has also been extremely professional and maintained excellent communication. In particular…"
$4,010.00
Fixed price
Expert Needed to Fix Attribution Tracking for Online Therapy Portal
Dec 21, 2024 - Dec 25, 2024
5.0
"Quick response, very rapid development, and thorough testing. It’s nice to work with professionals."
$100.00
Fixed price
Branch.io MMP specialist
Sep 27, 2023 - Oct 27, 2023
5.0
"Super talented and dedicated network ops and attribution specialist."
$5,400.00
Hourly (72 hours)
Marketing ad automation/scaling professional needed
Sep 27, 2023 - Oct 4, 2023
5.0
"Djordje is a veteran in the marketing tech industry and provided a great guidance on where to move forward with my project. Highly recommend!"
$75.00
Fixed price
Need a Developer to Implement Programmatic Audio Ads (in JavaScript) for a music platform.
Jun 5, 2020 - Jul 25, 2020
5.0
"We had a very positive experience working with Djordje. He is very knowledgeable, professional, and highly available to attend to us during the cause of this project. He completed our…"
$750.00
Fixed price
US Affiliate Networks Expert Consultation
Mar 13, 2020 - Mar 19, 2020
5.0
"Djordje shared his professional expertise and really helped."
$15.00
Fixed price
Set up IMA SDK on a drupal games website
Nov 25, 2018 - Dec 2, 2019
5.0
$1,225.00
Fixed price
URGENT: Create 13 Vector Website Slider / Header Images with Premium Adobe Creative Cloud
Nov 26, 2018 - Nov 28, 2018
5.0
"Working on very tight deadlines but he did an amazing job and checked everything. Thank you!"
$100.00
Fixed price
CreateJS using Adobe Animate("CreateJS" format) files
Aug 29, 2017 - Nov 25, 2018
5.0
$100.00
Fixed price
Need help configuring GTM and Custom JavaScript Macros for site
Jun 5, 2018 - Nov 25, 2018
No feedback
$350.00
Fixed price
Animated Lego's Dropping into place
Jan 25, 2018 - Feb 14, 2018
5.0
$50.00
Fixed price
Adobe Dimension rendering required
Jan 23, 2018 - Jan 26, 2018
5.0
"perfect"
$200.00
Fixed price
Buddhabot Animation 100 to 200 frames long
Jan 15, 2018 - Jan 16, 2018
5.0
"Brilliant piece of exquisite beauty and delight. Thanks!"
$108.00
Fixed price
200 frame in your style animation AnimateCC only
Jan 14, 2018 - Jan 15, 2018
5.0
"Brilliant creator animated the piece using code."
$108.00
Fixed price
Adobe Animate + javascript
Oct 13, 2017 - Oct 13, 2017
5.0
"Flawless work, delivered on time. Great communication skills. I would absolutely work with Djordje again!"
$50.00
Fixed price
MRAID Ad-unit
Sep 15, 2017 - Sep 28, 2017
No feedback
$50.00
Fixed price
Convert Digital Display Creative from Sizmek to standard Doubleclick Campaign Manager specs
Aug 20, 2017 - Aug 21, 2017
5.0
"Djordje was fantastic!"
$100.00
Fixed price
Ad Tech Consulting Services
Leverage 15+ years of experience to solve your most complex ad tech challenges and drive revenue growth.
Ad Tech Stack Architecture & Optimization
Programmatic Strategy (SSP, DSP, PMP)
Custom Ad Server & Format Development
Supply Monetization & Yield Management
QA Automation & Ad Quality Assurance
Server-Side Tracking & Attribution
Get In Touch
Have a project, a question, or just want to connect? Send me a message.
Ad Tech Expert & Product Innovator
A client-facing product owner and full-stack developer with over 20 years of experience building, managing, and launching digital ad products. I specialize in supply monetization, ad serving optimization, server-side tracking, and anti-fraud solutions. My passion is turning complex technical challenges into elegant, profitable realities.
Resume Highlights
Ad Tech & Ad Ops expert with 20+ years across demand & supply sides.
Full-stack developer; DevOps & QA automation across AWS, GCP, Azure, Heroku.
12+ years Tier-3 ad tech support alongside core roles.
Tagging / tag-management expert; server-side & Conversion API deployments.
In-app & web attribution; analytics & visualization (Looker Studio, GA, AppsFlyer, Branch, Hyros, Hubspot).
Creative production for display, interactive video, in-app.
Head of Product, GCN by GameSquare (2020-2023): contextual engine on Xandr (Spiketrap), proprietary ad server, PMPs.
Product Developer, Adventr.ai (2024): ad server, trained team; Three.js canvas player for ads.
Ad Tech Consultant, Celtra (2019-2020): trained SE/support/CS; premium custom formats.
Creative Innovations/Product Owner, Sizmek by Amazon (2014-2019): programmatic skin format; codeless QA automation.
$40MM+ managed on behalf of agencies/brands (GroupM, Amazon Games, Samsung, Universal, IGN...).
Supply side: monetized 40+ publishers; first MRAID in-app rewards format (ironSource).
Work Experience
Product Developer (Contractor)
Adventr.ai
2024
Built a custom ad server, trained the internal product team on ad tech standards, and helped develop an ad-friendly video player for VPAID and IMA3 ads.
Head of Product
GCN by Gamesquare
2020 - 2023
Launched profitable digital products, including a contextual engine with a custom AI/NLP model, a livestream content amplification solution, and a PMP of premium partner supply.
Ad Tech Consultant (Contractor)
Celtra
2019 - 2020
Trained solution engineers and client success teams on 3rd party ad tech solutions. Provided product consultancy on premium and custom ad formats.
Ad Product Owner
Sizmek by Amazon
2014 - 2019
Built a unique programmatic skin ad format, managed DCO, created a codeless QA automation stack (Selenium/Appium), and led Creative Solution Engineer teams in the UK and US.
Core Competencies
Dev
Javascript/Typescript
React/Next.js
Node.js
HTML/CSS
Python
Golang
Swift
Java
Selenium
Appium
Playwright
Cloud
GCP
AWS
Firebase
Vercel
Terraform
Docker
Kubernetes
CI/CD
Big Data
SQL
BigQuery
PostgreSQL
Spanner
Data Warehousing
ETL
Spiketrap
Tableau
Advertiser Ad Ops
The Trade Desk
DV360
Xandr Invest
Amazon DSP
DV
IAS
Trafficking
Campaign Management
Publisher Ad Ops
Google Ad Manager
Xandr Monetize
Magnite
Prebid.js
Yield Management
PMP Deals
Header Bidding
AI & Automation
Ad Analytics
AI/NLP
Bots & Agents
Automation
Get In Touch
Have a project, a question, or just want to connect? Send me a message.