Szilard L.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Head of an engineering team. Deep insight into/ development history of Bitcoin and the Lightning Network. Proficient AI-guided Optimization lead developer and product owner of software overarching developments related to Bitcoin, 3D geometry, architectural design, logistics.Experience in Python, LISP, Go languages. BAFA cert. energy advisor. 2019 – present BITCOIN HIGH-SECURITY WALLET SYSTEM Owner + Lead developer Pocket-sized hyper-secure offline bitcoin wallet and key-manager product owner • physically isolated one way offline transaction editor and key storage • complementing PC gateway application • low abstraction level, offchain UTXO management • highly customizable scripting environment • intuitive and extremely secure key manager • OS: UbuntuLinux – Windows – RaspbianLinux. PoC: Python / RaspberryPi 2020 – present BITCOIN – SHARED LIGHTNING NODE Owner + Lead developer Multi user wallet service system product owner • offering clients to utilize sovereign liquidity on the Lightning network • enabling clients to lease liquidity over LND-Pool using own Node • Lightning Network based bitcoin acceptance service for merchants • LN based data validation scheme for industry level measurement systems. • OS: RaspbianLinux. Implementation: LND / Umbrel. PoC: Python/Go/RaspberryPi Projects 2018 – present BITCOIN ADVISOR Business owner Providing Bitcoin related research, solutions and developing custom-made software • full support of decisionmaking for companies investing in or integrating bitcoin • fund locking schemes for legal entities represented by multiple natural persons • complex customized key storing solutions • advising on accounting aspects of Bitcoin purchases for companies • feasibility studies and profitability calculations on Mining • Point of Sale solutions for merchants and online retail • clients: various private enterprises and individuals 2016 – present OPTIMIZATION ENGINE - USING GENERAL GENETIC ALGORITHM Owner + Lead developer Engine powering multiple projects listed below own product • with vast number of customizable and adaptable engine- and task related parameters: engine can adopt and mix multiple optimization methods • customizable 2D – 3D animated display for real-time result rendering • OS: UbuntuLinux – Windows – RaspbianLinux. Written in Python 2016 – present AUTOMATED ROBOTIZED AQUAPONIC SYSTEM Owner + Lead developer Organic low-energy farming facility robotic production unit • remotely controlled, blockchain recorded, robotized fish-breeding produce farm • microcomputer controlled physical and biological environment. OS: Raspbian 2016 – 2021 ARCHITECTURAL LAYOUT DESIGNER FRAMEWORK Lead dev. + Advisor Evolutionary Algorithm based architectural layout designer app: floor plan + site • Framework supports entire workflow from user-input to documentation • powered by the Optimization Engine. Written in Python • incorporates and manages a multi software framework: Revit – Excel – Python • principal: OrganicaWater 2017 – 2018 SHELL STRUCTURE CONSTRUCTION DESIGNER Software arch. + Advisor Multiple software overarching custom made Architectural framework app • complex 3D geometry solver engine. Written in Python • customized 3D visualizer for runtime solution rendering • automated construction documentation level ACAD details. Written in AutoLISP • principal: Zenvision GmbH 2017 – 2018 VERSION TRACKED SCHEDULING FRAMEWORK Software arch. + Lead dev. Development of version controlled software environment. Scheduling application. • manage intermediate states of Architectural dev. related scheduled info • Revit – Excel synthesizing umbrella software. Written in Python • principal: Aukett + Heese 2018 LOGISTIC ROUTE OPTIMIZER Lead developer Customizable flight pattern designer for transport drones: TSP style extended tasks • powered by the Optimization Engine. Written in Python • client: Terez Molnar – private individual 2013 – 2016 PARAMETRIC AUTOMATED ARCHITECTURAL DOC. GENERATOR Lead dev. + Advisor CAD software to create building permit level documentation for industrial projects • parametric design and documentation of recycling centers, industry halls, geodome structures. Tasks defined by a set of numerical parameters only • AutoCAD – Excel synthesizing umbrella software. Written in AutoLISP. • principal: OrganicaWater