Ned Mitrovic
Building real businesses across services, brands, and operational systems.
Focused on disciplined execution, durable companies, and long-term value.
Ned Mitrovic is a Serbian-American entrepreneur who has been building, trading, and operating since he was a teenager.
His background spans automotive resale, financial markets, physical commodity trading, logistics, and service businesses. He has been actively trading financial markets since 2019 and steel and other commodities since 2020 — both still ongoing, operating between Wisconsin and Chicago. He approaches entrepreneurship as a portfolio of experiments, constantly identifying gaps and building around them. Currently operating Star Pro Cleaning and Northline Projects.
- Star Pro Cleaning
- Northline Projects
- Steel & Commodity Trading
- SZNs
- Gladiator
Entrepreneurship
Building and operating real businesses with durable revenue and strong operational foundations.
Brand Development
Exploring identity, culture, and lifestyle brands built around genuine communities.
Commodity Trading
Actively trading physical steel and commodities across the Midwest since 2020 — sourcing, negotiating, and moving material between Wisconsin and Chicago.
Performance & Discipline
Strength training, personal development, and performance culture as a foundation for everything else.
Builder. Operator.
Long-term thinker.
Born Nedeljko Mitrovic — everyone calls me Ned. A Serbian-American entrepreneur born in 2001 and based in Wisconsin. I grew up in a Serbian immigrant household, speak the language fluently, and carry that background into how I think about work, discipline, and building things that last.
I started early. By 16 I was reselling limited streetwear. At 17 I flipped my first car and began earning real independent income — that eventually grew to roughly 70 vehicles bought, improved, and resold. Since 2020 I've been actively trading physical steel and other commodities — sourcing, negotiating, and moving material across the Midwest. It's a discipline I've stayed in consistently and continue to operate in today, split between Wisconsin and Chicago.
I've traded financial markets since 2019 and still do — including a $600k+ result during the 2021 GameStop cycle. I also managed a trucking operation and now run two active service businesses: Star Pro Cleaning and Northline Projects.
Outside of business, I train six days a week — weightlifting and strength development are central to how I live. I also hold a black belt in martial arts. The same principles that show up in consistent physical training — discipline, patience, not stopping — are the ones I apply to building companies.
70+
Vehicles Resold
Hondas and Toyotas bought, improved, and sold since age 17
1,000+
Cleaning Jobs
Completed through Star Pro Cleaning with 100+ active customers
7+
Years in Markets
Actively trading financial markets since 2019 — still in it today
6×
Days Training
Weightlifting and strength — black belt in martial arts
Currently Building
Star Pro Cleaning
A premium residential cleaning service focused on recurring clients and operational excellence.
Northline Projects
Commercial services operation — painting, build-out prep, and project work supporting retail and commercial spaces.
SZNs
A brand concept exploring culture, performance, and modern lifestyle identity.
Gladiator
A performance-oriented concept centered around strength, discipline, and self-development.
Systems & Experiments
Exploring systems, automation, and operational improvements for businesses.
What I'm building.
Star Pro Cleaning
Star Pro is a premium residential cleaning company serving the greater Milwaukee area. Built from the ground up with a focus on recurring service contracts, high client retention, and operational consistency. Every job is executed to a defined standard — no shortcuts, no variability. The business model is built around predictable recurring revenue, not one-off transactions.
- 100+ active recurring clients
- 1,000+ completed jobs
- Services: deep clean, recurring weekly/biweekly, move-in/move-out
- Full trained team with standardized cleaning protocols
- Strong word-of-mouth growth and retention rate
Northline Projects
Northline Projects is a commercial services operation specializing in retail build-out support, light construction, and facility prep. The crew operates across Wisconsin and the greater Chicago area, taking on projects that national contractors won't touch at the detail level required. Fast turnarounds, reliable crew, and clean execution on every job.
- Crew of ~8 trained workers
- Retail build-out prep, commercial painting, concrete, light demo, handyman
- Clients include Walmart, H&M, and Sephora
- Operates across Wisconsin and Chicago metro
- Specialty: fast-turnaround commercial prep for national retail openings
SZNs
SZNs is a lifestyle brand built around the idea that every season has a feeling — and that feeling shapes how you dress, move, and carry yourself. It lives at the intersection of performance culture, personal identity, and modern aesthetics. Not a trend brand. Something more enduring — built for people who are intentional about how they show up.
- Apparel, accessories, and lifestyle goods
- Seasonal drops tied to culture and identity — not hype cycles
- Rooted in performance culture and personal discipline
- Community-first brand architecture
- Target audience: men who train, build, and live intentionally
Gladiator
Gladiator is a 70,000+ sq ft luxury mega gym and performance retreat concept — designed to be the most complete training environment ever built in the Midwest. No standard commercial gym compromises. Every square foot purpose-built around serious training, elite recovery, and the culture of discipline. The vision: a destination-level facility that reflects the same philosophy that drives everything else — do it right or don't do it.
- 70,000+ sq ft planned facility
- Olympic lifting platforms, powerlifting equipment, full turf training zones
- Recovery suites: sauna, cold plunge, contrast therapy, massage rooms
- Private training studios, group class spaces, and functional fitness areas
- Full-service nutrition bar and performance lounge
- Tiered membership: Standard, Performance, Elite / Founding Member
- Planned location: Franklin, WI / greater Milwaukee area
Operating Principles
Build Real Things
Focus on businesses that create real value rather than noise. Execution over narrative.
Recurring Revenue Matters
Durable businesses are built on predictable, repeatable revenue. One-time transactions are a starting point, not a strategy.
Discipline Compounds
Consistency and discipline create advantages over time. The edge isn't in intensity — it's in not stopping.
Systems Over Chaos
Strong systems outperform improvisation. Build the process before you scale the volume.
Long-Term Thinking
Building something meaningful requires patience and focus. Most worthwhile things take longer than expected.
Hunt the Value Gap
Every market has assets being mispriced and opportunities being overlooked. The job is to find them before the crowd does — and act decisively when you do.
"I look for what's being underestimated — in markets, in industries, in people — and I move before consensus catches up."
Long term: build and own multiple businesses, develop systems that improve how companies run, and eventually establish a venture capital operation.
Follow on Instagram →Timeline
Streetwear Resale
Started reselling limited streetwear and hype clothing — Supreme and similar brands. First taste of buying and selling at a margin and identifying what the market would pay for.
First Car Flip
Flipped his first car at 17 and began earning independent income. Automotive resale became a sustained hustle — to date, approximately 70 vehicles bought, improved, and resold, primarily Hondas and Toyotas.
Financial Markets
Started actively trading financial markets in 2019 and never stopped. Developed a disciplined approach to identifying asymmetric setups — studying price behavior, market structure, and macro dislocations. Still an active participant today across equities and other instruments.
Steel & Commodity Trading
Began trading physical steel and commodities across the Midwest — sourcing material, negotiating deals, and moving inventory between Wisconsin and the Chicago market. A discipline maintained consistently for years and still active today.
GameStop
Participated in the GameStop short squeeze and generated over $600,000 in profit. The experience reshaped how he thinks about markets, risk management, crowd behavior, and the structural mechanics of the financial system.
Ventures & Operations
Managed a small trucking operation before liquidating it. Continued exploring systems, automation ideas, and business models. Developed brand concepts including SZNs and Gladiator.
Star Pro Cleaning
Launched Star Pro Cleaning as a premium residential service business. Now operating with over 100 customers and 1,000+ completed jobs — focused on recurring revenue, strong client retention, and clean operational systems.
Northline Projects
Launched Northline Projects as a commercial services operation — retail build-out prep, painting, concrete, and light construction. Crew of ~8 working across Wisconsin and the Chicago metro, supporting national retailers including Walmart, H&M, and Sephora.
Life & Work
Work With Me
I'm always open to thoughtful conversations related to business partnerships, venture opportunities, collaborations, or interesting projects.
ned@mitrovic.com