freiberufler Principal .NET Architect | Distributed Systems, IoT, Real-Time & Legacy Modernization auf freelance.de

Principal .NET Architect | Distributed Systems, IoT, Real-Time & Legacy Modernization

zuletzt online vor wenigen Tagen
  • 110€/Stunde
  • 93059 Regensburg
  • Weltweit
  • de  |  en
  • 22.03.2026
  • Contract ready

Kurzvorstellung

Principal-level .NET architect with 15+ years experience in distributed systems, industrial IoT and legacy modernization. I stabilize complex platforms, redesign fragile architectures and reduce technical risk in mission-critical environments.

Auszug Referenzen (1)

"Die Zusammenarbeit war äußerst effektiv und konstruktiv. Es wurden innovative Ideen eingebracht, und ich bin sehr zufrieden mit dem Ergebnis."
Full-Stack Software Developer for Construction Site Tender Solutions
Kundenname anonymisiert
Tätigkeitszeitraum

11/2021 – 5/2024

Tätigkeitsbeschreibung

Entwicklung eines Tools zur digitalen Planung von Baustellen-Ausschreibungen.
Architektur und Umsetzung der Asp.net, SQL Server und Blazor Frontend basierten Applikation

Eingesetzte Qualifikationen

Database Developer, Scrum, Software Architecture, Teamleiter, UX / UI Designer

Geschäftsdaten

 Gewerbetreibend
 Steuernummer bekannt
 Berufshaftpflichtversicherung aktiv

Qualifikationen

  • ASP.NET5 J.
  • C#4 J.
  • cloud native
  • Full Stack Developer11 J.
  • Internet of Things (IoT)1 J.
  • Microsoft Azure
  • Projektleiter (Sonstige)11 J.
  • Software Architecture4 J.
  • Solution Architekt
  • SQL1 J.
  • System Architektur1 J.
  • Technischer Leiter

Projekt‐ & Berufserfahrung

System Architect – Industrial IoT Edge Platform
International beverage production company, Weltweit
4/2023 – 12/2024 (1 Jahr, 9 Monate)
Lebensmittelindustrie
Tätigkeitszeitraum

4/2023 – 12/2024

Tätigkeitsbeschreibung

Lead architect for a large-scale industrial IoT edge-to-cloud platform (project volume ~€30M). Environment included 4 international Scrum teams and 8 production sites.

Redesigned critical bidirectional synchronization between edge devices and cloud backend to reduce system instability and support overhead. Introduced Vertical Slice Architecture to reduce cross-team regressions and improve maintainability. Implemented feature flag strategy for controlled site-specific rollouts.

Significantly reduced support incidents and architectural complexity while increasing development productivity within affected modules.

Tech: C#, .NET, Microservices, IoT Edge, SQL Server, Messaging, CI/CD.

Eingesetzte Qualifikationen

Cloud Spezialist, Data Mining, Data Science, Data Warehousing, Internet of Things (IoT), System Architektur, Teamleiter

Lead Architect – Airport Access Management System (Critical Infrastructure)
International airport, Remote
4/2022 – 3/2023 (1 Jahr)
IT & Entwicklung
Tätigkeitszeitraum

4/2022 – 3/2023

Tätigkeitsbeschreibung

Replacement of a 20-year-old WinForms application managing access control data for an international airport.

Designed and implemented a modern ASP.NET Core + React web platform while maintaining compatibility with the existing access control database. Introduced automated testing and structured architecture documentation.

Led a small development team and aligned requirements directly with airport stakeholders. Delivered regulatory-compliant solution on schedule.

Resulted in ~50% reduction of administrative workload and enabled long-term maintainability by external support providers.

Tech: C#, ASP.NET Core, React, SQL Server, Identity & Access Management.

Eingesetzte Qualifikationen

ASP.NET, Requirements Engineer, SQL, Teamleiter

Full-Stack Software Developer for Construction Site Tender Solutions
AFRY Austria GmbH, Salzburg
11/2021 – 5/2024 (2 Jahre, 7 Monate)
Bauwirtschaft, Anlagen- und Schiffbau
Tätigkeitszeitraum

11/2021 – 5/2024

Tätigkeitsbeschreibung

Entwicklung eines Tools zur digitalen Planung von Baustellen-Ausschreibungen.
Architektur und Umsetzung der Asp.net, SQL Server und Blazor Frontend basierten Applikation

Eingesetzte Qualifikationen

Database Developer, Scrum, Software Architecture, Teamleiter, UX / UI Designer

Senior Fullstack Engineer – Retail Forecasting & Advertisement Platform
Major German discount supermarket chain, Ponholz
3/2020 – 11/2021 (1 Jahr, 9 Monate)
Einzelhandel
Tätigkeitszeitraum

3/2020 – 11/2021

Tätigkeitsbeschreibung

Performance redesign of data-intensive reporting system in retail environment.

Replaced memory-heavy SQL batch processing with streaming-based .NET pipeline. Optimized stored procedures and shifted computational logic from database to application layer.

Reduced RAM usage from several GB to ~10MB. Enabled daily forecasting instead of weekly runs. Avoided further high-end server investment.

Tech: C#, .NET, SQL Server, REST APIs, Messaging.

Eingesetzte Qualifikationen

Full Stack Developer, Scrum

Lead Architect – Real-Time Motorsport Timing Platform
wige SOLUTIONS Gmbh & Co. KG, Remote
8/2018 – 3/2020 (1 Jahr, 8 Monate)
Veranstaltungsservice
Tätigkeitszeitraum

8/2018 – 3/2020

Tätigkeitsbeschreibung

Architecture and primary development of high-availability real-time system for motorsport timing and live TV graphics integration.

Designed microservice-based architecture with <200ms end-to-end latency from vehicle detection to broadcast output. Implemented zero-data-loss design and active failover system capable of switching all external interfaces.

Planned for ~100 events per year with up to 500 participants per event. System validated in testing. Project discontinued for commercial reasons after escalation of missing domain transparency.

Tech: C#, Microservices, RabbitMQ, WPF, React, SQL Server.

Eingesetzte Qualifikationen

Full Stack Developer, React (JavaScript library), Software Architecture, Typescript

Timing & Data Services – Sports Events
multiple, Weltweit
5/2015 – offen (11 Jahre)
Veranstaltungsservice
Tätigkeitszeitraum

5/2015 – offen

Tätigkeitsbeschreibung

Operational responsibility for timekeeping, data services and live graphics integration at sports events.

Ensured reliable real-time data processing and broadcast integration in live environments. High operational reliability requirements and failure-intolerant setup.

Eingesetzte Qualifikationen

Full Stack Developer, Projektleiter (Sonstige)

Software Engineer & Architect – Industrial Machine-Building Software (Festanstellung)
evopro system engineering AG., Regensburg
6/2013 – 12/2017 (4 Jahre, 7 Monate)
Automobilindustrie
Tätigkeitszeitraum

6/2013 – 12/2017

Tätigkeitsbeschreibung

Full-time role in specialized machinery manufacturer establishing internal software division.

Designed distributed laboratory data management system across 3 locations including database schema and synchronization architecture. Developed high-level machine control software. Introduced Docker-based server infrastructure.

Built internal time tracking system still in productive use. Supported system administration (~25%) and server infrastructure design.

Tech: C#, ASP.NET, WPF, Oracle DB, SQL Server, Docker.

Eingesetzte Qualifikationen

Microsoft SQL-Server (MS SQL), Oracle Database, C#, Docker, ASP.NET

Ausbildung

Physik
Bachelor or Sience
Uni Regensburg
2016
Regensburg

Über mich

Principal freelance software architect with over 15 years of experience designing, modernizing and stabilizing complex enterprise and industrial platforms.

I am typically engaged when systems become difficult to maintain, synchronization logic fails under load, performance degrades, or architectural complexity slows down development teams.

My focus is not feature development but sustainable architecture, risk reduction and long-term platform stability.

Core Expertise
- Architecture & System Design
- Distributed systems & synchronization architectures (edge-to-cloud)
- Real-time processing (<200ms end-to-end latency)
- Zero-data-loss & failover design
- Microservice and modular monolith architectures
- Legacy system replacement (15–20+ year old platforms)
- Multi-team architecture governance

Typical Engagement Scenarios
- Stabilizing fragile enterprise systems
- Redesigning bidirectional synchronization logic
- Performance re-architecture of data-intensive systems
- Introducing architectural structure in scaling teams
- Interim technical leadership in complex environments
Technology Focus
- C#, .NET (ASP.NET Core), Entity Framework
- Distributed systems & messaging (NServiceBus, RabbitMQ)
- SQL Server, relational data modeling
- TypeScript / React (architecture-level involvement)
- Docker, CI/CD pipelines
- Edge computing & industrial IoT environments

Working Style
- Remote-first (EU-based)
- Clear architectural documentation
- Strong communication across technical & business stakeholders
- Pragmatic, risk-aware decision-making
- Focus on long-term maintainability instead of short-term hacks
- Available for architecture mandates, modernization projects and complex stabilization initiatives.

Persönliche Daten

Sprache
  • Deutsch (Muttersprache)
  • Englisch (Fließend)
Reisebereitschaft
Weltweit
Arbeitserlaubnis
  • Europäische Union
Home-Office
bevorzugt
Profilaufrufe
187
Alter
34
Berufserfahrung
14 Jahre und 3 Monate (seit 01/2012)
Projektleitung
6 Jahre

Kontaktdaten

Nur registrierte PREMIUM-Mitglieder von freelance.de können Kontaktdaten einsehen.

Jetzt Mitglied werden