Fundraising Fox

John Andrzejewski

Founder

Founder at Guardian RF

Washington, District of Columbia, United States

FoundedGuardian RF · YC

30 Under 30 2026 · Transportation & Aerospace

About

John Andrzejewski studied physics at Georgetown University and is now working on counter-UAS technology at Guardian RF.

Founder at Guardian RFYC S24

Intro paths

YC

John went through Y Combinator (Summer 2024) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Gustaf Alstromer — the partner who ran Guardian RF's batch and knows the company first-hand. YC profile ↗

→

In turn, John can intro founders to Guardian RF's investors below.

Guardian RF's investors · 3

Region CuatroCaliforniaSpace CapitalNew York CityY CombinatorSan Francisco · $500K checks · since 2024

Co-founders at Guardian RF

LRLucas Raskin
Lucas RaskinFounder
EKEli Kerstein
Eli KersteinFounder

Experience

  1. Guardian RFCo-Foundercurrent2024 — presentWashington, District of Columbia, United States
  2. Y AnalyticsResearch Assistant, Private Equity Impact Solutions2023 — 2024Washington, District of Columbia, United States
  3. GEF Capital PartnersPrivate Equity Summer Associate2023Arlington, Virginia, United States
  4. Radien Legacy PartnersPrivate Equity Intern2022
  5. American Marketing & Publishing, LLCField Sales Representative2020 — 2021DeKalb County, Illinois, United States
  6. Spring Bluff NurseryLaborer2019Kane County, Illinois, United States

Skills & more

EntrepreneurshipEngineeringPrivate Equity2Market Research2SalesFinancial ModelingPresentationsMarketingSales Processes

From John's professional profile.

Frequently asked questions

Who is John Andrzejewski?
John Andrzejewski studied physics at Georgetown University and is now working on counter-UAS technology at Guardian RF.
Where does John Andrzejewski work?
John Andrzejewski is Founder of Guardian RF.
What companies did John Andrzejewski found?
John Andrzejewski founded Guardian RF.
Where did John Andrzejewski go to school?
John Andrzejewski studied at Georgetown University (Bachelor of Science - BS, Physics and Economics Dual Major); Y Combinator; St. Francis High School Wheaton, IL.

Founder mafias

Y Combinator mafia8,773

Also came through, then founded or led a company.

Sam AltmanPresidentFounded Tools for Humanity +3Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded Pursuit +1

+ 8,766 more

Y Combinator mafia4,716

Also came through, then founded or led a company.

Ryan SheaEntrepreneurshipFounded StacksTarek MansourFounded KalshiSuhail DoshiEating beans & riceFounded Playground +1Subomi OluwalanaW22Founded ConvoyDarius "Bubs" MonsefS19Founded Sightbox +3Matthew ScholzFounded Oisin Biotechnologies +3

+ 4,709 more

Georgetown University mafia56

Also came through, then founded or led a company.

Trae StephensBSFounded Pursuit +1Ted LeonsisAmerican StudiesFounded Snagfilms +1Briggs MorrisonBachelor of Science (BS)Founded Crossbow Therapeutics +1Darren NixFounded Interviewed +1Brendan LevyBoard Certified Family Medicine PhysicianFounded Clara +1Oliver HillBachelor of Science - BSFounded Clearspace +1

+ 49 more

Same school

Also attended Georgetown University404

Trae StephensPartner at Founders Fund and co-founder of AndurilLuciana LixandruPartner at Sequoia CapitalKatherine BoyleGeneral Partner at Andreessen Horowitz (American Dynamism)Tobi CokerDeal Partner at Felicis VenturesAna AndreescuInvestor at Index VenturesTed LeonsisFounder & Partner, Revolution Growth at Revolution

+ 398 more

Also attended Y Combinator2,000

Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyMaroof AhmedFounder at Octopus VenturesJustin SwartPartner at Bitkraft Esports VenturesCollin WallaceGeneral Partner at Lobby Capital

+ 1,994 more

Shared employers

Also worked at Guardian RF2

Lucas RaskinFounder at Guardian RFEli KersteinFounder at Guardian RF

Also worked at GEF Capital Partners3

Gabriela MugnolImpact Manager at Circulate CapitalShruti JainPrincipal at Xeed VenturesSarad AgarwalInvestment Team at Pavestone