![[feh_085019_000001_Portrætter (inkl. 5 billeder) - Emil Konstantinovitgz8639-edit 1-web.jpg]] Been building systems professionally since my teens. Avid reader of philosophy and literature. Learned by doing: software by building it, Eastern European politics by spending time on the ground and talking to everyone from taxi drivers to oligarchs in saunas. Learned OPSEC and the adversarial mindset the hard way — because my life depended on it. ## 2026 — current **Cockroach Systems ApS** — offensive security research. - Became [OSCP Certified](https://credentials.offsec.com/2a7223cc-7403-47c3-acce-d69f4bdaf607#acc.A2fpXwEY) - Building proprietary C2 system - Publishing at [cockroach.systems](https://cockroach.systems) - 100+ CTF machines completed - Three months living and studying in Estonia - Studying at [Maldevacademy](https://maldevacademy.com/) _Tech: C, Rust, Python, nix, zig, other, windows internals..._ ## 2025 Build a sovereign homelab. OSCP studies. Various odd jobs including IT/network supporter at Parknet (Fiber ISP). Months spend traveling balkans and Romania. ## 2024 Period of recovery and bereavement. ## 2023 — ISR Operator, International Legion, Ukraine Volunteer deployment March–October. Small independent unit under ex-SAS and Sandhurst-trained leadership. - Certified drone pilot (Boryviter Military Academy) - Drone ISR and strike coordination; foot and aerial reconnaissance - HUMINT — civilian network management for intelligence, training, sustainment and logistics - Contributed to Cross-border operations - OPSEC/digital security SOPs for the unit - EW concepts and counter-detection - Coordinated a week long CQB training program - Counter-corruption operations Achievements: Didn't die. Got put on a [Russian telegram hit list](https://t.me/s/TrackAMerc?q=emil+konstantinovitz). Lessons: Corruption kills. Landmines suck. ## 2022 — Monthio / Ukraine Volunteer refugee support. Travelled Ukraine extensively — Kyiv, eastern front, Dnipro. Trained with various groups before committing to deployment in 2023. Returned to data engineering at monthio. Rewrote ETL/analytics pipelines. Backup and DR procedures. Optimised data warehouse — ~1000x query speedup. Mentored analysts. _Tech: Azure Synapse, Scala, Apache Spark_ ## 2020–2021 — Visma / Ukraine Large-scale property valuation system for the Danish Ministry of Tax. Notorious project. Orchestration team — distributed state machine, frontend/backend integration, architecture planning. Implemented a VPN client in Clojure. Left Aug 2021 to road trip western Ukraine. Learned blockchain, culture, history, politics. _Tech: Clojure, Java, ClojureScript, JS, PostgreSQL, Docker, AWS_ ## 2018 — Monthio First technical hire and lead developer at a PSD2 credit scoring startup. Full ownership of architecture — Azure data lake, ETL pipeline, C# backend, government integrations. Hiring and business development. _Tech: C#, MSSQL, Python, ReactJS, Azure_ ## 2016 — Maar Consulting Digital signage system for Copenhagen International School. 100+ screens. Android device management, fullstack scheduling system. Sole developer. _Tech: PostgreSQL, ReactJS, Cordova, NodeJS_ ## 2014–2018 — Wemuda Co-founder, age 16. Consumer transparency app (Detectox) — barcode scanning against ingredient/nutrition criteria. Reverse engineered Rema 1000's Android app to extract product API endpoints. DTU contract (250.000 DKK). TV2 press coverage. Company still alive. _Tech: PostgreSQL, C#, Python, AWS, AngularJS, Cordova_ --- ## Education - HTX Hillerød — 2014–2017 - Københavns Universitet — Data science (2018–2019, left for industry) - Applied Stoicism — life ## Self-study Threat intelligence, Russian doctrine and information warfare, totalitarianism and propaganda, behavioural manipulation, risk and complexity, classical philosophy. Seneca, Greenberg, Arendt, Miłosz, Zuboff, Bezmenov, Taleb, KUBARK. ## Certifications - OSCP - Boryviter Military Academy — ISR Drone Pilot Certification ## Conferences - Confirmed speaker at ICS CPH 10th Anniversary, November 2026 ## Contact [email protected] Codeberg: [https://codeberg.org/captn-r0ach](https://codeberg.org/captn-r0ach)