Available to hire
I’m Tobias Buehler, a systems architect and core platform engineer with 20+ years of experience bridging low-level infrastructure, high-concurrency systems, embedded hardware, and security/cryptography. I enjoy taking on complex, deadlocked, or unoptimized enterprise environments and turning them into clean, DRY, high-performance architectures—often by rebuilding the foundation (core engines, JIT/DSL pipelines, and real-time platforms) so the results stay stable in long-term production.
From designing ultra-light polyglot edge VMs in Zig to building secure P2P overlays with NAT traversal and Noise_IK encryption, I prefer end-to-end ownership: hardware integration (micro-soldering, PCB-level work, BMS/DC-DC design), mechanical prototyping, and full software stacks (C++/C#/Python/Go/Angular) that work reliably under real constraints. I’m available for contract/freelance work and I approach engineering the way I once trained for extreme sports—precisely, independently, and with uncompromising attention to failure modes.
Skills
Experience Level
Expert
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Intermediate
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Language
German
Fluent
English
Fluent
Work Experience
Lead Systems & Modernization Consultant at New Voice International AG (NVX)
June 1, 2026 - PresentReturned as consulting architect to modernize a flagship real-time safety dispatch platform used by hospitals, airports, and fire departments. Performed a full-stack modernization audit of the legacy C++ POCO core, Qooxdoo dashboard, WebGL 3D visualization, and STUN telemetry routing. Built an automated asset pipeline to generate image-to-3D and blueprint-to-3D content using glb and hardware viewport culling. Integrated a live map visualization layer for real-time localization tracking on the existing mesh. Also advised on predictive dispatch, automated alarm routing, and telemetry anomaly detection, executing refactoring in a zero-downtime, step-by-step way to avoid disruption of production.
Lead AI/ML Engineer & Systems Architect at nonix.ai
February 1, 2025 - February 1, 2026Development and strategic leadership of the central AI infrastructure and product offering for a dynamic AI startup, including architecture, LangChain MCP, LLM training, custom agents, prompt optimization, context engineering, CoT design, RAG integration, and advanced workflow orchestration. Built AI-driven web platforms, integrated complex backends with UIs, and established secure tool integration and CRTO-based resilience.
Lead AI Infrastructure & Media Compiler Architect at Dynamic AI-Startup (Serbia)
July 1, 2024 - April 30, 2026Architected the DAX Generative Media Engine that compiles YAML/Markdown storyboards into synchronized, multi-character voiced video clips and books. Designed the asset pipeline as a crash-resilient DAG enabling incremental compilation. Overcame Stable Diffusion consistency limitations by programming a matrix compiler that packs sequential storyboard panels into dynamic 2x2 to 4x4 grids within a single 16-reference image layout. Implemented an Emotional TTS Parser that splits text at semantic boundaries, invokes isolated voice profiles, applies real-time DSP filters, and stitches resulting waveforms back together.
Lead Angular Architect & UI Framework Engineer at Zürcher Kantonalbank (ZKB)
April 1, 2023 - December 31, 2023Delivered a greenfield 9-month project ahead of schedule in 7.5 months by designing a central logging and audit analysis UI. Avoided heavy legacy Kendo UI dependencies by building an enterprise UI Component Catalog based on Bulma, containing 26 custom Angular 16 components. Implemented nested hierarchical tree controllers with collapsible nodes, lazy sub-tree rendering, and real-time nested log search.
Frontend & Backend Developer at ZKB – BAT / Zentrales Log-System
April 1, 2023 - December 31, 2023Moderne UI-Entwicklung und Komponenten-Katalog zur Beschleunigung der Weiterentwicklung des zentralen Log-Systems; Standardisierung der Bulma CSS-Nutzung innerhalb von Angular-Anwendungen.
Frontend/Backend Developer – ZKB Central Logging System at ZKB - BAT / Zentrales Log-System
April 1, 2023 - December 1, 2023Developed a modern UI and component catalog to streamline the evolution of the central log system. Standardized Bulma CSS usage within Angular.
Freelance AI Engineer & Software Architect at Self-employed / Freelance
January 1, 2023 - January 1, 2024Autonome AI-Projekte: KI-gestützte Datenanalyse und Optimierung (Python, TensorFlow, scikit-learn, Pandas, NumPy) sowie Entwicklung intelligenter Plattformen; Telegram-Shop-Bot mit NLP (spaCy, NLTK) und Potenzial für Rasa-Integration; Aufbau von AI-gesteuerten Webplattformen.
Freelance AI/ML Developer – Telegram Shop Bot at Self-employed
January 1, 2023 - January 1, 2024Created a Telegram bot with integrated shopping cart using Python, AI tech, spaCy, NLTK and Rasa. Enables product purchases via natural language interactions.
Freelance AI/ML Developer – Auto Website KI-gestützte Datenanalyse at Self-employed
January 1, 2023 - January 1, 2024Developed an AI-powered data analysis platform ingesting market data from multiple sources to improve search and purchase decisions. Tech stack included Python with TensorFlow and scikit-learn, Pandas and NumPy; Vue frontend; PHP backend.
Senior Angular Developer at LinkGroup
December 1, 2022 - April 30, 2023Resolved deep Node.js dependency conflicts and implemented a scalable content-management component catalog using Angular 14, SCSS, and Storyblok.
Frontend & Full-Stack Developer at LinkGroup
December 1, 2022 - April 1, 2023Modernisierung des Web-Auftritts; Integration von SCSS-Stilen und Angular-Komponenten; Lösung von Node.js-Problemen für eine skalierbare Plattform.
Frontend/Full-Stack Developer – LinkGroup at LinkGroup
December 1, 2022 - April 1, 2023Modernized the client web presence and components. Integrated SCSS styles and Angular components and resolved Node.js issues to deliver a scalable platform.
Lead Systems, Hardware, & Security Architect at Sansaru DEV
January 1, 2022 - November 30, 2022Engineered a pocket-sized dual-battery hardware privacy gateway capable of 25 hours continuous uptime, automatically proxying client network traffic through Tor and I2P. Performed hardware work including stripping and micro-soldering custom Raspberry/Banana Pi stacks. Integrated hardware cryptographic chips over I2C and designed a custom load-sharing BMS with DC/DC buck-boost converters. Programmed low-level physical button debouncing and an isolated multi-session secure browser with an embedded sidecar dashboard. Designed a parametric FreeCAD enclosure system with variations for high-temp SLA resin 3D printing.
Mobile & Network Systems Developer at Sansaru DEV / Personal Network
January 1, 2022 - November 1, 2022Entwicklung eines tragbaren Mini-Computers zur privaten Netzwerkverwaltung mit verschlüsseltem Dateiaustausch; VPN, Tor, I2P, End-to-End Encryption; Angular-Frontend, Xamarin, Electron.
Software Engineer / System Architect – Sansaru DEV / Personal Network at Sansaru DEV / Personal Network
January 1, 2022 - November 1, 2022Built a portable battery-powered mini computer for private networks and encrypted file sharing. Implemented VPN, Tor and I2P with E2EE; Angular UI, Xamarin and Electron-based tools for multi-device management.
Lead Systems & UI Architect at Repower AG
September 1, 2021 - February 28, 2022Architected a real-time, high-concurrency smart-grid monitoring platform using Angular 7, .NET Core, and MSSQL. Built a data-binding bridge that decoupled high-frequency telemetry databases from the active UI rendering loop, eliminating interface lag during peak load cycles.
Platform Engineer / Smart Home & Energy Monitoring at Repo wer
September 1, 2021 - February 1, 2022Plattform zur Überwachung des Stromverbrauchs verschiedener Immobilien; Smart-Home-Steuerung; Frontend in Angular 7, Backend in .NET Core, MSSQL.
Frontend/Full-Stack Developer – Repo wer at Repo wer
September 1, 2021 - February 1, 2022Platform to monitor energy consumption across real estate properties with Smart-Home control. Included energy analysis and device control.
Lead Software Developer at Car Detailer
January 1, 2021 - June 30, 2021Developed a C#/Xamarin cross-platform application and a NestJS backend for managing engine software tuning maps and ECU diagnostics.
App Developer / Tuning System Integration at Car Detailer
January 1, 2021 - June 1, 2021Entwicklung einer App zur Verwaltung von Tuning-Definitionen für Autos, Motorräder und Taktoren; Download von Tuning-Maps und Buchungsfunktion für Tuning-Services; Technologien: C#, Xamarin, NestJS, MySQL.
App Developer – Car Detailer at Car Detailer
January 1, 2021 - June 1, 2021App to manage tuning definitions for vehicles and components. Supports download of tuning maps and a booking feature.
Operations Organizer & Platform Lead at Wan-Wan Foodtruck
February 1, 2020 - July 31, 2020Co-founded a mobile fleet operation, handling physical hardware logistics and vehicle wrapping. Developed the operations platform to dynamically route trucks and update menu pricing algorithms.
Chief Systems & Mechanical Engineer at Autonomous IoT Ordering Kiosk
February 1, 2020 - July 31, 2020Designed and fabricated a self-service interactive vending kiosk including the wooden enclosure and thermal management. Integrated Raspberry Pi hardware to drive portrait displays and POS thermal receipt printers. Developed multi-tier POS/POP software architecture (Angular, .NET Core) with multi-language touch interfaces, TomTom/OSM GIS APIs for delivery verification, and a dynamic logistics pathfinding algorithm.
Platform & Web App Developer at Wann-Wan Foodtruck
February 1, 2020 - July 1, 2020Plattform zur Verwaltung von Standorten, Menüs und Catering-Anfragen; dynamische Menüanpassung basierend auf Standort; Technologien: Angular, Bulma, .NET Core, MS SQL.
Frontend/Full-Stack Developer – Wanna-Wan Foodtruck at Wanna-Wan Foodtruck
February 1, 2020 - July 1, 2020Platform to manage food truck locations and menus with location-based menu adaptation. Tech: Angular 11, Bulma, .NET Core, Entity Framework, MS SQL.
Lead Cryptography & Desktop UI Architect at Sovereign P2P Merchant Suite ("Pocket Merchant")
October 1, 2018 - October 31, 2019Engineered an autonomous, secure desktop merchant ERP running inside a hardware-encrypted virtual environment (dm-crypt/LUKS) via a custom Python/PyQt5 interface. Integrated a native Bitcoin wallet manager (Bitcoin RPC), GnuPG (PGP RSA-4096) for signatures, and an automated OpenVPN certificate swapper for multi-provider routing. Reverse-engineered session bridges for messaging platforms including Wire, Threema, and WhatsApp.
Systems Architect & Scientific Software Developer at Zürcher Kantonalbank (ZKB)
January 1, 2016 - December 31, 2018Rescued the deadlocked Analysis, Simulation & Risk (ASR) platform. Built a custom Python/PyQt desktop IDE to replace MATLAB. Engineered a decorator-based runtime engine enabling hot-swapping of versioned calculation models directly in DRAM without performance loss. Also replaced manual Excel workflows for the executive board by developing a dynamic web-based matrix engine (Angular/SLDS) and implemented an override protocol to visualize downstream asset-allocation impacts across overlapping timelines. Led standardization of Anaconda and PyCharm within a strictly regulated Java enterprise environment.
Software Engineer / Frontend & Backend at ZKB Active Investment Solutions
January 1, 2016 - December 31, 2018Plattform für Investitionsanalyse und mathematische Berechnungen; UI-Entwicklung, IIS-Portal, MATLAB-basierte IDE-Ersatzentwicklung.
MATLAB IDE Developer – ZKB Active Investment Solutions at ZKB Active Investment Solutions
January 1, 2016 - December 31, 2018Developed a MATLAB-like IDE for finance and mathematical computations; supported versioning and comparison of simulations with historical data models.
Frontend/UI Developer – ZKB Active Investment Solutions at ZKB Active Investment Solutions
January 1, 2016 - December 31, 2018UI/Frontend work and portal development for investment analysis and mathematical calculations; supported board meetings with forecast analysis and versioning.
Technical Architect at Allianz Suisse
January 1, 2015 - December 31, 2016Architected the frontend for a high-concurrency B2C/B2B insurance registration and tariff calculation portal. Implemented a custom object-oriented architecture inside AngularJS (Angular 1) via Bower/Gulp modular loaders, anticipating the later Angular 2/TypeScript architectural direction.
Frontend Developer / Registration Workflow at Allianz
January 1, 2015 - December 31, 2016Front-End-Entwicklung für eine dynamische Anmeldestrecke; automatische Weiterleitung an Allianz-Berater; Integration in bestehende Prozesse.
Frontend Developer – Allianz Anmeldestrecke at Allianz
January 1, 2015 - December 1, 2016Frontend for dynamic enrollment flow enabling users to enter data and receive pricing; automated redirection to Allianz consultants.
Systems & Packaging Engineer at Software-Packing Platform
January 1, 2014 - December 31, 2015Developed a Python/Django/C++ automation engine for packaging, verifying, and distributing software installations across remote host networks.
Software Packaging – Platform at Software-Packing
January 1, 2014 - December 31, 2015Plattform zur Verwaltung und Verteilung von Softwarepaketen; Skript-Generierung und Deployment-Automatisierung.
Backend/Full-Stack Developer – Software-Packing at Software-Packing
January 1, 2014 - December 1, 2015Platform to manage and distribute software packages. Implemented interfaces to create and deploy scripts across multiple systems.
IT Consultant & Core Systems Developer at New Voice International AG (NVX)
January 1, 2012 - December 31, 2014Architected the foundational C++ POCO core for a real-time safety dispatch and visualization system used by hospitals, airports, and fire departments. Developed a proprietary object-oriented protocol for flat, zero-copy serialization over TCP/UDP, replacing an unstable PHP file-watchdog architecture. Built the visual dashboard UI in Qooxdoo. Also developed a neural-network-driven DECT/Wi-Fi localization system (RSSI-based) for a psychiatric clinic in France.
IT-Consultant / Applications-Entwickler at New Voice International
January 1, 2012 - December 31, 2014Lokalisierung, Triangulationssoftware und HTTP/WebSocket-Proxy; Fokus auf Optimierung der Benutzerinteraktionen.
IT Consultant / App Developer – New Voice International at New Voice International
January 1, 2012 - December 1, 2014Localization and triangulation software development; built HTTP/WebSocket proxies to optimize communication and data processing.
Applications Developer at Diverse Projects
January 1, 2005 - December 31, 2014Breites Spektrum an Applikationsentwicklung: Shopping-Systeme, Content-Management, Streaming-Lösungen (TinyCaster), VoIP-Lösungen.
Applications Developer – Diverse Projects at Various Projects
January 1, 2005 - December 1, 2014Diverse software development including Shopping System and Custom CMS, TinyCaster streaming, VoIP solutions, and remote IT support.
App Developer – Smartmedia AG at Smartmedia AG
January 1, 2003 - December 1, 2005PostFinance youth portal and Adveq portal development and maintenance; Rotho master data management; production app development.
Apprenticeship / Applications Developer at Emotions GmbH
January 1, 2001 - December 31, 2003Webportale für Swiss Life/Rentenanstalt, Swissklick; Optimierung von Frontend- und Backend-Prozessen.
App Developer – Emotions GmbH at Emotions GmbH
January 1, 2001 - December 1, 2003Developed web portals for Swiss Life and Swissklick; improved user interactions and backend performance.
Independent Applications Developer at Diverse Projects
January 1, 2000 - December 31, 2014Built high-traffic web portals, CRM databases, and manufacturing data pipelines for multiple clients using ColdFusion, Python 2, PHP, and VB6. Developed custom streaming solutions (Tiny Caster via Python/Flex/SHOUTcast) and bespoke VoIP clients using SIP/IAX protocols.
Apprenticeship / Applications Developer at Mindlend AG
January 1, 2000 - December 31, 2001Websites und Anwendungen für Vereine und medizinische Fachkreise; Datenverwaltung und Benutzerkommunikation.
App Developer – Mindlend AG at Mindlend AG
January 1, 2000 - December 1, 2001Various applications using ColdFusion, MySQL, HTML and JavaScript for clients.
Education
Ausbildung Koch at Waldhaus, Luzern
January 1, 1996 - December 31, 1999Kochlehre at Waldhaus Luzern
January 1, 1996 - December 31, 1999Qualifications
Industry Experience
Software & Internet, Media & Entertainment, Professional Services, Computers & Electronics, Healthcare, Financial Services, Energy & Utilities, Transportation & Logistics, Telecommunications, Government, Manufacturing, Education
Skills
Experience Level
Expert
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