Matija Djumic
Verified Expert in Marketing
Marketing Expert
Belgrade, Serbia
Toptal member since April 20, 2023
Matija runs done-for-you organic and paid social for big brands and founder-led businesses. He leads social for Warner Bros. Discovery across 30 accounts in five languages, producing 300 videos a month, and grew video views from 20M to 400M in a year. He took a streaming platform from 100,000 users to 1.7M across 120 countries. He does the same for founders, from advising 200+ startups on go-to-market to building marketing from zero for a Harvard Medical School spinout.
Project Highlights
Expertise
- B2B Lead Generation
- Conversion Rate Optimization (CRO)
- Digital Marketing
- Digital Marketing Strategy
- Digital Project Management
- LinkedIn Marketing
- Marketing Strategy
- Social Media Strategy
Work Experience
Social Media Lead
Warner Bros. Discovery
- Managed social media for Warner Bros. Discovery, including Discovery Channel and TLC, across 30 accounts in 5 languages, producing 420 videos a month.
- Grew combined following to 4M+ and averaged 700%+ YoY growth across all accounts in primary metrics.
- Increased video views from 20M to 400M in 12 months.
- Built and ran a content operation producing 420 videos per month across all brands and languages.
- Led a team of 6 editors, designers, and social managers to deliver at that volume without quality drift.
- Planned and ran paid campaigns behind high-profile title launches including Barbie, House of the Dragon, and Minecraft, using targeted spend to extend reach on promo and partner content.
Marketing Advisor and Speaker
Science Technology Park
- Advised startups and SMBs in a national tech park's portfolio on offer design and go-to-market across all four acquisition channels: content, paid ads, outbound, and referrals.
- Delivered 15+ workshops to 200+ founders on offers and positioning, channel selection, paid social, and building a content operation that runs without the founder.
- Ran one-on-one mentoring on whatever was actually blocking each company: pricing, messaging, which channel to test next, and hiring their first marketer.
- Worked with founders at every stage, from pre-revenue teams finding their first channel to companies scaling paid.
Founder, Social And Paid Media
forleap
- Ran a done-for-you social growth service producing up to 30 videos a month per client, covering research, strategy, content planning, scripting, editing, publishing, analytics, paid ads, community management, and turning followers into buyers.
- Ran go-to-market for a London B2B SaaS, reaching profitability in four months and supporting the founder through a first pre-seed raise.
- Grew Instagram for BUCK Lighting, a global lighting manufacturer, from 100 to 5,000 targeted followers in six months.
- Achieved 10x ROAS on Meta ads for an eCommerce brand, driving $3,000+ in daily revenue.
- Grew Novosti, a national newspaper's YouTube channel, from 100 to 36,600 subscribers in six months, and launched seven original series with their team.
Social and Paid Media Lead
MetaBusiness World LLC
- Ran organic and paid social for a founder's personal brand and her hair care line, covering strategy, content production, analytics, community, and paid ads.
- Grew a founder's Instagram to 13,000 followers on organic short-form content alone.
- Built paid campaigns that held cost per click and cost per profile visit well below the industry average.
- Led the social launch of a hair care brand that sold out its entire inventory on launch night, with a co-promotion campaign centered on two-time Grammy winner and Destiny's Child founding member LeToya Luckett and her 3.3M followers.
Social Media Lead
Duet Technology
- Helped build the full organic social operation end to end, from recording through editing, publishing, and analytics.
- Built the organic content system for the founder's personal brand and Barber Style Directory, a combined audience of 700K+ followers that had been posting with no plan.
- Replaced random posting with a repeatable pipeline: planning, scripting, recording, editing, publishing and analytics, including a system for cutting long-form YouTube into short-form.
- Top clips from the new system pulled millions of views.
- Built the influencer outreach process, with partnerships spanning creators from six figures to over a million followers.
- Led the brand refresh and the full website rebuild, then ran conversion rate optimization on the new site.
Marketing Lead
Mass General Brigham
- Ran marketing for ScienceBank, built inside a Harvard Medical School lab at Mass General Brigham, and spun off into its own company.
- Recruited 100s of scientists from Harvard, Stanford, and Johns Hopkins and similar Universities with no paid budget.
- Built the ideal customer profile, the go-to-market plan and executed it.
- Ran outbound lead generation and email and LinkedIn outreach directly, with reply rates 7X above industry benchmarks.
- Led a team of three across content, social, website, and outreach.
Organic And Paid Social Media Lead
RTS Planeta
- Led digital growth for RTS Planeta, a European streaming platform often described as the Balkan Netflix.
- Grew the user base 17x, from 100,000 users in 3 countries to 1.7M+ across 120, over four years.
- Added 130,000 followers across platforms, taking Instagram from zero to 55,000 and Facebook from 5,000 to 70,000.
- Drove 73,000+ app installs through paid social at a cost per install as low as $0.07.
- Built a repeatable short-form system turning long-form streaming content into clips that consistently crossed millions of views, driving tens of thousands of organic signups.
- Ran full-funnel paid acquisition across Meta, YouTube, Google Search, and Display, segmented by country, language, and device across 120 markets. Drove 73,000+ app installs at a cost per install as low as $0.07.
Paid Social Media Strategist
Pathfinder DMCC
- Audited the full Facebook Ads account alongside competitor and category campaigns, and rebuilt the paid strategy around what the data supported.
- Ran mobile user acquisition and set the forward plan for paid social spend.
- Audited the conversion funnel end to end, from ad creative through landing page, pricing, and signup, and delivered both quick fixes and a full page redesign plan.
Organic And Paid Social Media Marketing Manager
Digital Silk
- Cut cost per warm lead from $800 to $40 in six months for Modula USA, $1M machinery with no usable Meta interest category. Built targeting from CRM custom audiences, lookalikes off buyers, and retargeting. Leads up 20x, 19 of 20 rated high quality.
- Ran a cross-platform campaign for G Pen, a top-three global vape manufacturer, spanning Facebook, Instagram, email, influencers, and PR, that brought in seven figures of revenue in seven days and 150% growth YoY.
- Lifted site-wide conversion rates 25% for Rollink and Lugz, two 8-figure eCommerce brands, 30% for My Green Mattress, and 25% for DesignRush.
- Led international teams of designers, video editors, and community managers across client accounts.
Marketing Director
Vasic Media
- Grew Kozel, Pilsner Urquell, and Grolsch Proxy from zero to tens of thousands of followers on Facebook and Instagram.
- Grew a political account from zero to 10,000 Facebook followers and 5,200 Instagram followers.
- Managed 15 to 20 client social accounts across the agency.
- Positioned the agency as the leading social media firm in the Balkan region.
Project History
Sourcing 5,000 Investor Leads in 90 Days for an 8-Figure Raise at High Times
Helped High Times raise over $10 million through a pre-IPO campaign focused on B2B lead generation.
High Times is an American monthly magazine and cannabis brand with offices in Los Angeles and New York City.
The presentation attached provides a comprehensive account of our contribution to the High Times’ successful campaign targeting the US and Canadian markets. We also described how we generated B2B leads for three investor buyer personas, raising an 8-figure number in just three months.
The presentation showcases the following:
• Brand and campaign introduction
• Key problems and solutions
• Results per issue
• LinkedIn outreach examples
• Other important information
Growing Streaming Users 17X, From 100K to 1.7M Across 120 Countries
https://www.forleap.co/rts-planetaAssisted by my team, we acquired 1,600,000+ users in three years, increased 10x monthly subscription revenue, and 50x organic social followers while also enabling the gain of a foothold in all relevant markets across more than 120 countries.
RTS Planeta, Serbia’s oldest media company, started to provide web and mobile content streaming services through a subscription business model similar to Netflix but offering exclusive Balkan content.
For 3+ years, I led their digital marketing efforts, and throughout that period, we targeted the Balkan countries and the worldwide Balkan diaspora.
During that time, my team and I assisted them in acquiring more than 1,600,000 users within three years while also increasing their monthly subscription revenue by 10x, multiplying their organic social media followers by 50x, and aiding them in gaining users in over 120 relevant markets.
Consequently, they were able to generate sufficient revenue to launch a new version that included exclusive Serbian TV shows and movies, pushing out the competition and entirely dominating the market.
Cutting Cost Per Lead From $800 to $40 on Automated Storage Systems Priced at $100K+
Reduced cost per warm lead from $800 to $40 in six months for a Modula USA product that costs between $100,000 and $1,000,000 and increased the number of high-quality monthly leads by 20 times.
Modula USA is an automated storage solutions company selling warehouse robots and automation products.
As part of our agency strategy, we targeted decision-makers in the automotive, logistics, warehousing, and grocery industries. In just six months, I helped them reduce their cost per lead by 90%, from $800 per lead to $40, and increased the number of high-quality monthly leads by 20x. As a result, they achieved record-breaking monthly revenue, bringing in 8 figures, which was a first for them since their founding in 1987.
This success allowed them to increase their advertising budget by 5x and our agency engagement by 3x.
Growing Social Video Views 20X, From 20M to 400M, for Warner Bros. Discovery
https://www.forleap.co/warner-bros-discovery- 20X Video Views — From 20M to 400M views across 30 accounts in 5 languages
- +643K TikTok Follows — Launched TikTok from scratch. Instagram grew 3.2x. 4M+ total followers across 3 platforms
- 300 Videos Per Month — Scaled production across 30 accounts in 5 languages with a native-speaking team
Massive global presence, but social ops weren’t keeping up:
• No unified strategy, regional teams in silos
• Localization stopped at translation, no cultural adaptation
• Meta/TikTok monetization tools were unused
• Facebook-only, no real IG or TikTok presence
• Too slow to catch trends in real time
• Video lacked quality, quantity, and strong hooks
• Hired native-speaking teams for Hungarian, Romanian, Bulgarian, Serbian, and English markets
• Adapted content per market instead of translating it
• Built a production system turning WBD’s archive into 300 videos a month across 30 accounts
• Ran paid campaigns behind Barbie, Game of Thrones, House of the Dragon, and Minecraft launches
• Set up weekly reviews of performance, monetization, and sentiment by market
• Expanded from Facebook only to Instagram and TikTok
• Grew monetized accounts from 2 to 10
• Top videos:
• http://fb.com/share/v/1BsRJCodgd/
• http://fb.com/reel/3174185292783210/
• http://fb.com/reel/2194312494729726/
Taking a Harvard Medical School Spinout to Market With $0 Ad Spend
https://sciencebank.com/- $0 Ad Spend — All growth driven by ICP research, content, social and outreach, with no paid media
- 7X Response Rate — Positive response rates 7x above industry benchmarks at the top of the funnel
- 100s of Scientists — Recruited from Harvard, Stanford and Johns Hopkins and other Universities
ScienceBank launched inside a Harvard Medical School lab with no audience, no brand and no ad budget.
• No defined customer profile or go-to-market plan
• Scientists ignore most marketing and trust peers over platforms
• No channel mix or system to reach researchers at scale
• No website
• Researched and built the ideal customer profile across top research institutions
• Designed the go-to-market plan and channel mix around how researchers adopt new platforms
• Ran targeted email and LinkedIn outreach as the top of the funnel
• Built social and content from zero to give the platform credibility with academics
• Redid the website and landing pages to convert
• Led a team of three across content, social, website and outreach
• Hundreds of scientists recruited from Harvard, Stanford and Johns Hopkins and other Universities
• Email positive reply rates 7X the industry average
• ScienceBank spun off from the lab into its own company
Building the Content, Influencer and Conversion Systems Behind a 700K-Follower Barber Brand
- 700K+ Audience — Founder and Barber Style Directory accounts, run on one system
- M+ Top Clip Views — Long-form YouTube cut into short-form clips
- 4 Systems Built — Content, influencer outreach, website, CRO
- 100K-1M+ Creators — Influencer partnerships, from six figures to 1M+ followers
Big audience, but no system behind it:
• 700K+ followers across the founder and Barber Style Directory accounts
• Content posted at random, no planning or scripts
• No production process or analytics
• No system for repurposing long-form YouTube
• No influencer outreach process
• No conversion optimization on the site
• Built a content pipeline: planning, scripting, recording, editing, publishing, analytics
• Set up a system for cutting long-form YouTube into short-form
• Built an influencer outreach process for creators from 100K to 1M+ followers
• Led the brand refresh and full website rebuild
• Ran conversion rate optimization on the new site
• New brand book, website, CRO system
• Repeatable content and influencer systems
• M+ views on clips and collabs
Accounts:
• https://instagram.com/barberstyledirectory
• https://tiktok.com/@thomascutit
• https://youtube.com/@BarberStyleDirectory
Training a Marketing Team at Gi Group, a $5B Staffing Company, to Run Social In-House in 90 Days
https://www.gigroup.com/- 90 Days to In-House — Trained team running social without external support
- 3 Platforms In-House — Facebook, Instagram and LinkedIn, planned and run by the team
- $0 Agency Retainer — Recurring agency fees cut after the handover
- Top 15 Staffing Firm — 37 countries, 27,000+ client companies
Big brand, but social depended on outside help:
• Team relied on external support for Facebook, Instagram and LinkedIn
• Skill gaps across the team, no training path to close them
• No internal playbooks or processes
• Recurring agency costs with no plan to bring social in-house
• Met each team member to map strengths and skill gaps
• Built a 90-day training plan around those gaps
• Ran training sessions alongside live campaigns
• Coached the team side by side, from planning to performance
• Wrote internal playbooks so the process outlived the training
• Team running Facebook, Instagram and LinkedIn in-house within 90 days
• Recurring agency fees cut
• Internal playbooks for ongoing execution
• Marketing Manager: “completely self-sufficient” in 3 months
Selling Out Ra Beauty's First Launch With a Two-Time Grammy Winner's 3.3M Audience
https://www.instagram.com/p/DRu080skYXq/- Sold Out in 1 Night — Ra Beauty’s full first inventory sold out on launch night
- 1M+ Views — LeToya Luckett shared launch videos to her 3.3M followers, driving millions of views
- 0 to 13K Followers — Grew founder Erin’s Instagram on organic short-form before the launch
New hair care brand with no product audience:
• Launching a first product with zero existing customers
• Founder’s personal brand too small to carry a launch
• No content system or proof the audience would buy
• Needed reach beyond Erin’s own following on launch day
• Built Erin’s Instagram first, with short-form storytelling around why she created Ra Beauty
• Scripted and produced founder-led video positioning the launch before it happened
• Set up a co-promotion with two-time Grammy winner and Destiny’s Child founding member LeToya Luckett
• LeToya spoke at the launch event and shared launch videos to her 3.3M followers
• Ran the full social rollout for launch night
• Sold out the full first inventory on launch night
• Millions of views on collab videos
• Grew Erin’s Instagram from 0 to 13K on organic short-form
• Got cost per follower as low as $0.50
Education
Bachelor's Degree in Information Technology and Computer Science
University of Belgrade - Belgrade, Serbia
Bachelor’s Degree (Exchange Program) in Information Technology and Computer Science
Lincoln University of PA - Baltimore Pike, PA, USA
Certifications
Advanced LinkedIn Ads
CXL
Google Shopping
CXL
Landing Page Optimization
CXL
Google Analytics for Beginners
CXL
Email Marketing
CXL
Project Management for Marketers
CXL
Account Based Marketing
CXL
Google Analytics Certification
Meta Certified Digital Marketing Associate
Meta
YouTube Music Certification
YouTube Content Ownership
YouTube Asset Monetization
TOEFL
ETS
Skills
Core
Digital Marketing, Marketing Strategy, Digital Marketing Strategy, Conversion Rate Optimization (CRO), Social Media, Social Media Design, Organic Social Media, Social Media Content, Social Media Strategy, Facebook Ads, Instagram Marketing, LinkedIn Ads, LinkedIn Marketing, Marketing, Marketing Mix, Cold Emailing, Social Media Management, Social Media Posting, Facebook Marketing, Funnel Marketing, Paid Advertising, Lead Generation, Social Media Marketing (SMM), Funnel Optimization, Social Media Analytics, Social Media Campaigns, Social Media Advertising, Marketing Leadership, Instagram Growth, Marketing Analytics, Go-to-market (GTM) Strategy, Web Marketing, Content Marketing, Ad Campaigns, Audience Targeting, Performance Marketing, Content Creation, Influencer Marketing, Content Strategy, Brand Marketing, SMART Social Media Marketing, Audience Engagement, TikTok Marketing, Community Management, Social Media Platforms, Marketing Research & Analysis, Branding, Pay-per-Click (PPC), Email Marketing, YouTube Ads, Inbound Marketing, TikTok Ads, Copywriting, Growth Hacking, Email Campaigns, Google Paid Ads, Google Ads, Product Marketing, Product Positioning, Mobile Marketing, Funnel Analysis, Search Engine Optimization (SEO), Account-based Marketing (ABM), Mobile Advertising, Landing Pages, SEO Tools, Social Media Optimization
Platforms & Tools
Instagram Ads, CRM Systems, Linkedln, Meta Platform, HubSpot, Magento, Google Analytics, Google Analytics 4 (GA4), Google Analytics 360, TikTok, Google Ad Manager, Facebook Ads Manager
Business Models
Business to Consumer (B2C), B2B, Business to Business (B2B), Market Positioning
Other
Consulting, Public Speaking, B2B Lead Generation, Digital Marketing Design, Social Ad Design, Project Management, Digital Project Management, WhatsApp, English, Mobile User Acquisition, Conversion Rate, Marketing Plans, eCommerce, Startups, Remarketing, Personal Branding, Consumer Services, Sales Funnel, Team Leadership, Customer Acquisition, Instagram, Meta Ads, Product Launch, Value Proposition, Growth Strategy, AI Social Media Content Creation, Partnerships, Partnership Marketing, LinkedIn, Growth Marketing, Healthtech, Healthcare, Human Resources (HR), Campaign Optimization, Performance Metrics, AI Content Creation, Geofencing & Geotargeting, Content Optimization, Scripting, Buyer Personas, Social Media Video Marketing, Startup Marketing, Competitor Analysis & Profiling, Go-to-market Execution, Shopify Marketing, Compliance, Web Design, WordPress, WooCommerce, Web UI, Mobile UI, Email, B2B Partnerships, YouTube SEO, YouTube, YouTube Marketing, Shopify, Snapchat, ClickFunnels, User Journeys, Videos, GoHighLevel, Podcast Marketing, iOS, Cryptocurrency, Storytelling, Multichannel Content Strategy, Python, Web Development, Web UX, Paid Media, Paid Search, Google Shopping Ads, Technical SEO, Text Analytics, Brand Books, Books, Ad Optimization, Tone of Voice, Instagram Account Management, Cross-channel Marketing, Logistics, Website Redesign, Customer Insights, Viral Marketing, B2B Marketing, Sales Pipeline Management, LinkedIn Sales Navigator, Paid Acquisition, Social Media Research, Social Media Copywriting, Instagram Verification, Facebook, Social, Instagram Reels, Outreach, Events, Beauty Products
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