Technical portfolio · Software development · QA · Linux · Defensive security · Scientific computing
I build practical tools and reproducible technical projects across software, defensive cybersecurity, physics, and engineering. The area pages distinguish implemented work from skills I am still developing.
| Area | Selected evidence |
|---|---|
| Software Development | Rick & Morty — Interdimensional Portal Observatory (React/TypeScript infinite scroll and observability; 22 local tests pass, official runner not verified) · VEX Shadow Audit (offline Python VEX diagnostic) · EV Charge Settlement Audit (offline Python CSV reconciliation with explainable findings) · Junior Developer Project Collection · OSINT Evidence Pipeline · simdjson Streaming Complexity Study · Python · JavaScript (local chat with automated tests and CI) · Quantum Chess (probabilistic game prototype with state-invariant regression tests and CI) · QPU CX Topology Regression Audit (offline directed native-CX snapshot diff against fixed physical workloads; 18 tests, Python 3.10–3.13 CI) · UncertaintyLab · API Contract Sentinel (restricted OpenAPI contract comparison with consumer annotations) · Memory Regression Lab (bounded Linux allocation, RSS and timing experiments; inconclusive verdicts) |
| QA & Software Testing | VEX Shadow Audit (55 synthetic tests; CI on Python 3.10, 3.12 and 3.14) · Tolerance Stack-up Capability (numerical tests and CI) · OSINT Evidence Pipeline (offline fixtures and CI) · Linux Application Incident Lab (manual case and regression checks in a synthetic lab) |
| Open Source Contributions | Microsoft OpenTelemetry Python PR #288 — merged default root-logger collection fix · PlasmaPy PR #3388 — merged units and particle guidance · Axiomize Quantum Skills PR #11 — merged numeric-oracle regression tests · StockVeda PR #74 — merged API error-disclosure fix |
| Product & Application Support | Linux Application Incident Lab — synthetic incident with reproduction, logs, root cause, recovery and manual QA; no real customer case. |
| Linux / Systems & IT Support | Linux Resource Benchmark (bounded system diagnostics) · Linux Application Incident Lab (synthetic troubleshooting and service recovery). · Linux Failure Indicator Lab (synthetic pressure indicators with false-positive and missed-incident evaluation) |
| Cybersecurity / SOC | VEX Shadow Audit (offline OpenVEX repository precedence and conflicting-statement analysis; candidates for manual review, no automatic suppression) · Defensive Security Lab (read-only failed-login reporting, validated scanner with localhost default, loopback lab, tests and CI) · Independent Security Research (C++ source-code auditing, static analysis, local ASan testing) · URLPolicy Lab 1.0.1 (offline Python webhook URL-policy QA; synthetic fixtures, regression tests and bounded fuzzing) · Web Analyzer for Tails and Linux (HTTP through Tor and Playwright browser analysis in a VM; HTML/JSON reports, bilingual guides and ZIPs; actual VMware execution NOT_VERIFIED) · SBOM Risk Prioritizer (offline synthetic SBOM triage with explicit uncertainty) · Local ELF Inventory (local ELF header triage; synthetic tests; no binary execution) |
| OSINT | OSINT Evidence Pipeline (public project metadata with source provenance) · Threat Evidence Correlator (synthetic evidence lineage and contradiction review) |
| Physics / Scientific Computing | High-Precision TIDL Simulator (software simulation; no hardware validation) · physic · UncertaintyLab · Satellite Thermal Model Lab (synthetic lumped-node thermal model with energy and convergence checks) |
| Industrial Engineering | OEE Downtime Analyzer (synthetic shift OEE, downtime and Pareto analysis) · Production Bottleneck Simulator (discrete-event line simulation with finite buffers and downtime) · ThermoGap (research-stage study of same-factory waste-heat reuse; synthetic cases, no production software yet) |
| Mechanical Engineering | Tolerance Stack-up Capability (hypothetical clearance and tolerance analysis) · Bearing Life & Reliability Lab (hypothetical pure-radial L10 and parameter uncertainty) |
Each area page contains more projects and scope notes. Projects appear in multiple areas when their published work supports more than one skill.
- Python and shell automation
- Data parsing, transformation, and reporting
- Defensive security scripting and log analysis
- Open-source research and technical documentation
- Scientific and engineering computation
Python · Bash · TypeScript/JavaScript · C · Rust · SQL · MATLAB/Simulink · Git · Docker · Linux
Vincimech
jandro.derojas@gmail.com