Jan Cz.
BA / Developer
Experience (B2B/Freelance)
(*) Information cannot be revealed yet due to the non-disclosure agreement.
BA / Developer
[PL][Industry] Company 1 (*)
2012+
PHP 7+, MSSQL 2019/2022, R, VBA, UI
Objectives:
- Prepare reports/analytics (BI) in R about sales & system usage for Executive Board
- Prepare security audits for sales system and hardening it.
- Maintain & improve sales/logistic/administration system in PHP + vanilia WebStack.
- Prepare Excel's integration with PHP EndPoints in VBA. (live acess control list, multilang, logs, stats,..)
- Migration from php v5.3 to v7/8.
- Optimize DB speed & struct & hardening (procs, roles, logs, b-tree, watchdogs, ...)
- Co-Op with internal depratments (IT, Sales, Production) & customers
BA / Developer / CyberSec
[PL][HighTech] Company 2 (*)
2016+
C#, R, Python 3, WebTech, UI - WPF/WinF
Objectives:
- Develop & maintain software/solutions in C#, Py (scripts), R, WebTech.
- Create integrations for ActiveDirectory and similar solutions.
- Develop Multi-Threaded data processing parts.
- Integrate external devices/services/endPoints with software in C#.
- Co-op with customers/suppliers.
R&D BA/Developer
[FR][High-Tech (Strategic)] Company 3 (*)
2017-2023
C, C#, R, PS, Python3 (Pandas, FastAPI), UI - WPF/WinF, NoSQL (LiteDB)
Objectives:
- Prepare theoretical/math models (eg. piezo calibration - first order) in R & Py3. Research & validation with enterprise-standard version delivery.
- Develop Multi-Threaded/RealTime/TimeCritical data processing parts.
- Maintain and develop software & scripts in C#, PS for AFM (Atomic forces microscopy) & dataSets in NoSQL/LocDB
- Obfuscate & hardening software and embedded(HW) part.
- Works with equipment and provide intial tests in C/C# for embedded (HW) part.
- Co-op & fulfil international customers requirements.
Developer
[USA] Private Business
2018+
Processing v3+ (subset of Java), C
Objectives:
- Apply computational geometry solution (eg. intersections, rays, scale, colision detection, open/close shape etc.) & path optimizations.
- Develop and maintain soft in processing 3 for fabric prints and hardware part in C.
- Migration from Processing v3 to v4.
- Integrate hardware with software.
TechStack
Core
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C# /.NET 3.5+, 8
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Java 11+
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Python 3
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VBA
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R
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Others C-like langs
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F#
WEB
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PHP 7.0+
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Angular/React
DB
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MSSQL 2019+ / MariaDB
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NoSQL/Neo4j
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PGSQL
Academic Ops
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Diploma/PubPoznan's Train Traffic Optimization2024-2025-02
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Group ProjectAnonymous Surveys (TOR) - TeamLeader2024-2025-02
Languages
- English (B1)
- French (A1/2)
- German (A1/2)
Interests
- Equitation
- Optimization
- Self-learn/improvements
- Mountain trips