I write the algorithm, and I run the network it describes.
Currently — running the network infrastructure department of an oil & gas company across 30+ sites, and publishing the Rust crates that come out of that work.
yngvarr.dev@gmail.com · Remote, CET/EET · open to remote roles in the EU and to work with companies across RU/CIS
xgraph's bridge detection finds exactly
the single points of failure a campus topology review looks for — published, versioned, used by
other developers, and it came off the job. So did every crate below it.
20+ years in production networks · 7 published packages · 52 000+ downloads · 24 engineers led across 30+ sites
Rust · C · C++ · Python · Linux — Cisco · Huawei · SIP · E1/PRI
Plenty of engineers have one of these tracks. What is rare is the edge between them — and every crate below sits on it.
- Topology review → code. Finding the one link whose failure splits a campus network is
exactly a graph bridge;
xgraphcomputes bridges, betweenness centrality and communities on graphs of that shape. - Trust boundary → code.
huginnvalidates and sanitizes input at the boundary, written by someone who has seen what actually arrives at a production network edge.
Six crates on crates.io and one package on PyPI — 52 000+ downloads on crates.io alone, all documented and maintained.
| Project | What it is | Version | Downloads |
|---|---|---|---|
| xgraph | Graph algorithms — Dijkstra, Kosaraju, Brandes centrality, Leiden communities, bridge detection — over homogeneous graphs and heterogeneous multigraphs |  |
 |
| fibonacci_heap | Fibonacci heap with amortised O(1) decrease-key, cascading cuts and link operations |
 |
 |
| huginn | Input sanitization and validation at the trust boundary, with a typed validator pipeline |  |
 |
| bearingpro | Maritime navigation — true and magnetic bearings, deviation, course conversion |  |
 |
| ourobuf | no_std circular buffer with constant-time operations for allocator-free targets |
 |
 |
| patternhunt | Filesystem search — globs, brace expansion, extglobs, regex and metadata predicates, sync or streaming |  |
 |
Newest — pqcrypt 
- Head of network infrastructure department — campus and data-centre networking and structured cabling systems (SCS) for an oil & gas company. 24 engineers across 30+ sites, operating a switching estate of several thousand devices.
- Voice and telecom administration — IP-PBX platforms, voice gateways and session border controllers: AudioCodes Mediant, Cisco, Huawei, Eltex, Nortel, Alcatel.
- Protocols and dimensioning — SIP, RTP, H.323, E1/PRI trunking, and the traffic engineering behind capacity planning.
- Systems programming — Rust, C, C++, Linux, memory- and cache-aware design, concurrency
- Embedded —
no_std, ARM Cortex-M4/M7, STM32, RTIC, ATmega/ATtiny, DMA, USB, UART, real-time constraints - Networking — campus and data-centre switching, structured cabling, TCP/IP, topology and capacity planning
- Telecom — SIP, RTP, H.323, E1/PRI, IP-PBX, voice gateways, session border controllers
- Security — post-quantum cryptography, encryption and signing, input validation, binary analysis
- Algorithms — graphs, data structures, performance work and benchmarking
- Leadership — running an infrastructure department: planning, vendor management, incident response
Languages — Rust · C · C++ · Python · Bash · JavaScript · PHP
Embedded — STM32 · Cortex-M4/M7 · RTIC · ATmega · ATtiny · Raspberry Pi · no_std
Networking — Cisco · Huawei · Eltex · HP · campus LAN · data centre · SCS
Telecom — SIP · RTP · H.323 · IP-PBX · AudioCodes Mediant · Nortel · Alcatel · E1/PRI
Systems — Linux (Debian/Ubuntu) · multithreading · async · real-time
Data and ML — PostgreSQL · MySQL · Redis · NumPy · pandas · PyTorch · scikit-learn · NetworkX
Tools — Git · Docker · CI/CD · GDB · CMake
yngvarr.dev@gmail.com · Remote, CET/EET
Open to remote roles in the EU and to work with companies across RU/CIS.