David
Czartoryski
Software engineer and founder out of Northeastern. Wrestler by trade, Polish at home, Bostonian by zip code. Twenty-three countries stamped, and the next flight is a new-grad engineering role in May 2027.
- PASSENGER
- CZARTORYSKI / D
- FLIGHT
- HH 2027
- GATE
- 23
- SEAT
- 1A
- CLASS
- FOUNDER
- DEPARTS
- MAY 2027
- COUNTRIES STAMPED
- 23
- HOME BASES
- 03
- MA STATE CHAMPION, MULTIPLE TITLES
- 1ST
- VENTURES IN THE HOLD
- 04
Twenty-three countries, one passport.
Every outline below is the real border, projected from the same atlas cartographers use. Tap a stamp with film in it to open the photos. The rest are waiting on the next roll.
Every leg logged.
Employment, newest first. Founded companies live in the cargo hold below, so the employment history reads as what it is.
- LEG 01Sep 2026 – PresentBOSBOSTON, MA
Pawtograder
SOFTWARE ENGINEER- Operate a production coding and grading platform serving 5,000+ weekly active users across ten Northeastern CS courses, as one of 15 engineers shipping through daily standups and peer code review on a subteam of four that owns one service end to end.
- Work in the autograding path (Next.js and TypeScript on Supabase Postgres): every submission runs through GitHub Actions and returns compile errors, similarity scores, and AI-usage signals before a human grader sees it.
- Capstone with Prof. Jon Bell. The platform covers submissions, similarity checking, grading workflows, a gradebook with its own query language, a forum, polling, and real-time office hours. Other schools have asked to adopt it.
NEXT.JSTYPESCRIPTSUPABASEPOSTGRESGITHUB ACTIONS - LEG 02Jan 2026 – May 2026BOSBOSTON, MA
Mosaiq Software
FULL-STACK SOFTWARE ENGINEER- Cut update latency to 120 ms by replacing a 5-second polling loop with a WebSocket transport, unblocking live updates and interactive multi-user workflows the product could not support before.
- Moved the React frontend and Node/Express backend onto shared TypeScript API contracts in a monorepo package, so a breaking change fails the compiler instead of reaching production as a runtime data-flow bug.
REACTNODEEXPRESSTYPESCRIPTWEBSOCKETS - LEG 03Jul 2025 – Dec 2025SFOMENLO PARK, CA
Summit Partners
DEVOPS ENGINEER CO-OP- Cut deployment time 70% at a $42B+ AUM growth equity firm by automating infrastructure provisioning in Python, Bash, and Azure CLI, reclaiming 12 engineer-hours per week from manual runbooks.
- Diagnosed international server connectivity failures through firewall and routing configuration alongside the firm's lead architect, inside a security-compliant private equity environment.
- Provisioned 50+ company-issued devices into the firm's zero-trust endpoint stack (Zscaler, Proofpoint, ThreatLocker), maintaining hybrid fleet compliance in Jamf Pro and NinjaOne.
- Cut 4 hours per deal review by shipping AI extraction and summarization into the deal spreadsheet workflow, owned end to end from pitch to production as the intern project.
- Reduced query latency 30% with a Python and SQL service that deduplicated redundant datasets and rewrote the calculation pipelines reading from them.
PYTHONBASHAZURE CLISQLJAMF PRO - LEG 04Jun 2023 – Aug 2024SWKSOUTHWICK, MA
Whalley Computer Associates
NETWORK ENGINEER INTERN- Configured hundreds of Cisco switches per rollout with a Python script parameterized for each site's requirements, replacing switch-by-switch CLI work across state agency and municipal deployments.
- Cut inter-site latency 35% by migrating government sites off 1990s Cat 3 cabling to Cat 8 and replacing the switch hardware behind it.
- Set up firewall policy, BGP peering, and IP addressing at each site, standardizing configuration that had drifted into a different security posture per location.
CISCOPYTHONBGPFIREWALLS - ORIGINExpected May 2027BOSBOSTON, MA
Northeastern University
B.S. COMPUTER SCIENCE & BUSINESS ADMINISTRATION- Combined CS and business program, with an active petition to transfer into BSBA Finance with a CS minor.
- President of the Polish Club (previously VP of the Polish Students Association). The club attended an international youth conference in Warsaw in summer 2026 on the future of Poland.
- CookYourBooks: a Java OOP group project.
What's in the hold.
Hercules Holdings
HHVENTURE STUDIO & HOLDING COMPANY · 2024 – PRESENT
Hercules Holdings — HH — is a venture studio and holding company that my ventures operate under. Everything below is built and run inside it: a govtech fare platform, a consumer fintech app, the AI tooling behind the commerce brands, and runtime research for GPU clusters. It has had employees and interns.
- 22,000+RIDERS UNDER CONTRACT
- credimax.app ↗800+TRANSACTIONS PER WINDOW
- $180KREVENUE DRIVEN
Before the passport, there was the mat.
Wrestling was the first thing that took me on the road: weigh-ins at dawn, gyms in towns I had never heard of, and a scoreboard that does not care how you feel. I won the Massachusetts state title more than once in high school and I still wrestle at Northeastern.
It is also why the rest of this page exists. Cutting weight teaches you to ship on a deadline. Six minutes on the mat teaches you that preparation is the whole game. Everything I build, from fare platforms to ad pipelines, runs on that.
- 1st
- MASSACHUSETTS STATE CHAMPION, MULTIPLE TITLES
- NU
- WRESTLES AT NORTHEASTERN UNIVERSITY
- HS → D1
- FROM MASSACHUSETTS HIGH SCHOOL MATS TO COLLEGE
Off the clock, on the road.
Between flights I am usually eating something I cannot pronounce yet, trying to pronounce it anyway, and filming the attempt.
Fashion
Editorial and luxury-lifestyle modeling, the influencer-model hybrid lane. Milan is the reason for half the photos on this page.
Food
Every country gets judged by its breakfast. New dishes are the fastest way into a culture, and the fastest way to make friends at a table.
Languages
Polish at home, at heritage-speaker level. On the road I collect enough of each language to order, thank, and get lost politely.
Content
The travel gets posted. TikTok and Instagram under one handle, mostly the places, sometimes the outfits.
Now landing.
If you are hiring for 2027, building something, or just passing through San Francisco, Boston, or Warsaw, my inbox is open.
The work that actually pulls me in is making things faster. Load balancing, cutting latency, runtime, and cost: profiling a system until the bottleneck shows itself, then optimizing the code around it. Most of what I have shipped is a version of that same problem — a 5-second poll down to 120 ms, 70% off deployment time, 30% off query latency, and now straggler detection across GPU clusters.
- New-grad software engineering, starting after May 2027
- Private equity and venture roles
- Front-office, people-facing finance