cat cv.en.json
Daniel Deusing
Managing Director & Senior Software Engineer
Ribeirão Claro, Brasil · twiceD Technology GmbH
DE native · EN/ES fluent · PT
I'm open to whatever shape the work takes — hired into a team, or engaged B2B through my company, twiceD Technology GmbH. I work just as well remote or on-site: fully location-independent, and ready to relocate anywhere, at any time, when a project calls for it. If there's something worth building, I'm interested.
Results-driven software engineer with 15+ years of experience in full-stack development, IoT, embedded systems, and enterprise software. Proven track record leading development teams and delivering mission-critical systems for automotive, defense, and industrial clients. Excels at systematic debugging and root cause analysis of complex problems. Experienced in code review with focus on knowledge transfer and team development. Combines hands-on technical expertise with leadership skills – from architecture planning through implementation to production operations. Strong communication skills in German, English, and Spanish. Experienced in agile, distributed teams and international projects.
- Programming
- Java · Python · C · TypeScript/JavaScript · C++ · Bash
- Frameworks
- Spring Boot · Angular · Flask · OSGi · Hibernate · JUnit · JPA
- Cloud & Infrastructure
- AWS · Docker · Linux · Yocto/OpenEmbedded
- DevOps & Tools
- Git · Jenkins · CI/CD Pipelines · Atlassian Suite (Jira/Confluence)
- Databases
- MySQL · Oracle SQL · PostgreSQL · Redis · MongoDB
- Architecture & Design
- Domain-Driven Design · Microservices · Event-Driven Architecture
- Protocols & APIs
- REST · SOAP · Swagger/OpenAPI · MQTT · WebSocket
- Observability
- Grafana · Prometheus · ELK Stack · Application Logging
- Security
- OAuth2 · TLS/SSL · LDAP · Identity Provider Integration
- Methodology
- Scrum · Kanban · Test Driven Development · Requirements Engineering · Code Review
- Domains
- IoT · Smart Home · Embedded Systems · Linux Drivers · Enterprise Software · Automotive
The following projects comprise my own development work only. Not listed are twiceD Technology GmbH projects that were implemented by employees and that I oversaw in a leadership role without actively contributing to development.
2022 – Present
LiMAPS – Real-Time Measurement Analysis Platform
LITEF GmbH (Northrop Grumman) · Lead Developer & Team Lead
Leading development of real-time measurement analysis system for inertial navigation systems.
- - Architected real-time data pipeline from shared memory ring buffer to web frontend
- - Led team of 4 developers; also deployed in LiRED (related platform)
- - Integrated C library from LITEF for high-performance shared memory access
- - Ongoing maintenance: security updates, performance optimizations, and bug fixes
Tech: Angular, Python, C, Shared Memory, Real-Time Systems
2021 – Present
VU3 – Enterprise Vehicle Sales Platform (Volkswagen Group)
Cloudflight GmbH / Porsche Informatik GmbH · Software Developer & Architect
Contributing to VW Group's central sales platform serving dealerships across 28+ countries for Audi, VW, Skoda, Seat, Cupra, and Porsche brands.
- - 2 years SFO1 team: Stocklist, Add-Ons, Buildability & Actuality Check, Salesperson Management, Performance Board, Vehicle Management, Contract Broker, Sales Folder
- - 2+ years SFO4 team (ongoing): Multi-Currency, Special Tax, Porsche Vehicle Integration, DocFlow Integration, Selections, Datahub
- - ½+ year SWP team (ongoing): Legacy sales application Italy – Bug fixing, security/regulatory features, maintenance until migration 2027
- - 2+ years Technical Architecture Team (ongoing): Cross-domain team defining overall system architecture
Tech: Angular, Java, Spring Boot, Oracle SQL, Redis, Solr, SOAP, REST API, AWS
2021 – 2023
GigE Vision Linux Driver – High-Speed Camera Interface
PLC2 Design GmbH / Mercedes-Benz & Bosch · Lead Developer
Developed high-performance Linux kernel driver for industrial camera systems used in automotive production.
- - Achieved 40 Gbit/s data throughput with zero packet loss and minimal CPU usage
- - Implemented kernel-space driver with optimized kernel-to-userspace data transfer
- - Collaborated with PLC2 hardware/FPGA team and 20+ Mercedes/Bosch engineers
Tech: C, Linux Kernel, GigE Vision
2020 – Present
IHK eFaktura – Electronic Invoice Management
IHK Schwaben · Team Lead & Developer
Leading development of electronic invoicing system for IHK member companies.
- - Led team of 3 developers building invoice management and SOAP integration
- - Integrated with existing IHK backend infrastructure for seamless data exchange
- - Ongoing maintenance: security updates, performance optimizations, and bug fixes
Tech: Angular, Java, Spring Boot, MySQL, SOAP
2020 – Present
IHK Themen – Exam Topic Management
IHK Schwaben · Team Lead & Developer
Leading development of exam topic submission and management platform for apprenticeship exams.
- - Built complete workflow for exam topic submission, review, and approval
- - Shares backend infrastructure with eFaktura; custom Angular frontend
- - Ongoing maintenance: security updates, performance optimizations, and bug fixes
Tech: Angular, Java, Spring Boot, MySQL, SOAP
2020 – Present
LiPAD – Portable Precision Alignment App
LITEF GmbH (Northrop Grumman) · Developer
Native Android app for portable inertial measurement device used in precision surveying (e.g., oil drilling).
- - Built complete Android app with real-time 3D orientation visualization (pitch, roll, azimuth)
- - Implemented Bluetooth LE connectivity, offline project management, and CSV export
- - Published on Google Play; ongoing maintenance for security and feature updates
Tech: Android, Java, Bluetooth LE
2020
PGC-1000 – High-Speed Grabber Card Software
PLC2 Design GmbH · Developer
Software development for PCIe-based grabber card used in automotive data acquisition.
- - Adapted existing GigE Vision driver (from Athena/Mercedes project) for PGC-1000 hardware
- - Developed Qt control application for capture configuration, stream monitoring, and image conversion
- - Achieved 40 Gbit/s throughput with ~0% CPU load via DMA transfers
Tech: C, Qt, Linux, PCIe, DMA
2019 – Present
Promonco – Enterprise Project & Time Management
twiceD Technology GmbH · Lead Developer & Team Lead
In-house developed SaaS platform for project management, time tracking, and business analytics.
- - Led core team of 4 developers (8+ total contributors) building full-stack platform
- - Implemented LDAP integration, DATEV export, and MS Access data migration
- - Deployed internally at twiceD offices; served external customers as SaaS
- - Ongoing maintenance: security updates, performance optimizations, and bug fixes
Tech: Java, Spring Boot, Angular, MySQL, Python, Docker, LDAP, DATEV
2019 – 2021
FPGA Conference Europe – Registration & Booking System
PLC2 GmbH · Backend Developer
Conference registration platform for Europe's leading FPGA developer conference (500+ attendees).
- - Developed Spring Boot backend: registration flow, session booking, payment processing
- - Implemented real-time seat management, waitlist handling, and conflict detection
- - Platform served conference successfully for 3 consecutive years
Tech: Java, Spring Boot, MySQL, REST API
2019 – 2020
IHK Zeugnischeck – Certificate Verification Portal
IHK Schwaben / IHK München · Developer
Joint development with IHK München for digital verification of vocational training certificates.
- - Built secure verification system for employers to validate apprenticeship certificates
- - Collaborated with IHK München development team on shared platform architecture
Tech: Angular, Java, Spring Boot, MySQL
2018
4NEEDS – Influencer ICO Platform
4NEEDS · Blockchain Developer
Developed an ICO platform for influencer marketing based on Blockchain technology.
- - Smart contract development for token issuance and trading
- - Full-stack development: Angular frontend, Java backend, Python services
- - Integration of Blockchain SDK for wallet management and transaction processing
Tech: Blockchain, Angular, Java, Python
2017
Obsidian – Embedded OS & Drivers
PLC2 Design GmbH · Embedded Developer
Developed complete embedded Linux system for PLC2 hardware with bootloader, kernel, and drivers.
- - Yocto-based Linux image with custom kernel and device tree for Xilinx Zynq
- - Developed kernel drivers for FPGA communication and hardware interfaces
- - Bootloader configuration (U-Boot) and boot optimization for fast system startup
Tech: Yocto, C, Python, Linux Kernel, U-Boot, Device Tree
2015 – 2017
baseCON – Smart Home & Assisted Living System
KUNDO xT GmbH · Developer & Architect
Co-architected Z-Wave certified smart home platform for elderly care, deployed in housing cooperatives across Germany.
- - Co-designed system architecture for embedded Linux gateway (RaspberryPi → ODROID-C2)
- - Developed core backend in Java/OSGi: rule engine, alarm system, MQTT cloud integration
- - Led Z-Wave certification for 4-button companion device; supported baseCON hub certification
- - Integrated Z-Wave, HomeMatic, SML, M-Bus protocols into unified control layer
Tech: Java, OSGi, Angular, Python, C, MQTT, Z-Wave, Yocto
2015 – 2017
SafeGuard Solutions – Mobile Emergency System
SafeGuard Solutions GmbH · Android Developer
Developed a mobile emergency system with BLE beacons for indoor localization of at-risk individuals.
- - Native Android app with Bluetooth LE beacon scanning and trilateration for positioning
- - Integration of push notifications and backend communication for real-time alerting
- - Optimized power consumption for continuous background BLE scanning
- - Integration with external systems for alarm forwarding and data exchange
Tech: Android, Java, Bluetooth LE, REST API
2014 – 2015
Elaborated Networks – JSON RESTful API for WireGate
Elaborated Networks GmbH · Backend Developer
Developed RESTful API for WireGate smart home gateway to integrate various building automation protocols.
- - JSON-based REST API for KNX/EIB device control and configuration
- - Integration with existing Python backend of WireGate system
Tech: Python, REST API, JSON, KNX/EIB
2013 – 2014
myHOA – Smart Home Startup
Own Startup · Co-Founder
Co-founded and led technical development of a smart home startup with custom gateway and integrated home automation.
- - Custom embedded Linux gateway (Yocto) with multi-protocol support (Z-Wave, EnOcean, DigitalSTROM, M-Bus, HomeMatic, ZigBee)
- - Complete development from hardware selection to backend to Android app (focus: backend)
Tech: Yocto, C, Python, Android, REST API
2011 – 2012
Visioneering – EnOcean Integration into DigitalSTROM
Visioneering AG · Software Developer
Integration of EnOcean wireless protocol into DigitalSTROM ecosystem as wrapper for virtual DigitalSTROM devices.
- - Protocol integration: EnOcean sensors mapped as virtual DigitalSTROM devices
- - Developed virtual DSM (DigitalSTROM-Meter) to integrate EnOcean devices into DigitalSTROM system
- - Custom web UI for configuration and management of EnOcean devices
Tech: C++, Python, JavaScript, HTML, EnOcean, DigitalSTROM
2018 – Present
twiceD Technology GmbH
Managing Director & Software Developer
2015 – 2018
Ingenieurbüro Deusing GbR
Managing Director & Software Developer
2015 – 2017
Hochschule Furtwangen
Academic Staff & Lecturer (Part-time)
2010
Volkswagen de México
Software Developer Intern
2009 – 2012
Studentenwerk Freiburg, Furtwangen
Network Administrator (volunteer)
2009 – 2010
IT Data Center Furtwangen
Software Developer (student assistant)
2014
Hochschule Furtwangen University
Master of Science – Computer Science
Thesis: Coordination and Combination of Heterogeneous Technologies in Smart Home Context (Grade: 1.0)
2012
Hochschule Furtwangen University
Bachelor of Science – Computer Science
Thesis: Homogenization of Building Automation via TCP/IP (Grade: 1.3)
2013
Peer-reviewed Publication – Investigation of the Peer-to-Peer Web Standard WebRTC
InformatikJournal (2013), Hochschule Furtwangen University, pp. 23-32. ISBN: 978-3-00-0443221-3
2010
ITIL Version 2 Foundation Examination
2014
Baden-Württemberg Goes Mobile – Winner
Category: Mobile Housemate 2.0
2013
Elevator Pitch BW Regional Cup – Winner
Südschwarzwald Region
German — Native English — Fluent Spanish — Fluent Portuguese — Intermediate French — Basic