Dennis Geurts
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Highly experienced and results-oriented Software Architect with over 25 years of experience in IT, specializing in the design, development, and implementation of robust, highly scalable, and secure backend systems.
Proven ability to architect and deliver innovative solutions across diverse industries, including IoT, FinTech, Retail, Government, and Industrial Automation.
Key Pillars of My Work:
- 🛠️ Hands-On Architecture & Backend Engineering: Deep expertise in building reliable cloud-native services using Golang, Kotlin, and Java, alongside modern messaging brokers like Apache Kafka, RabbitMQ, and Google Pub/Sub.
- ☁️ Cloud Native & Platform Engineering: Expert in orchestrating containerized environments using Kubernetes, Istio, Helm, and ArgoCD, with a track record of implementing high-impact cost optimizations (e.g., 75% cloud cost reduction) and zero-downtime cluster migrations.
- 📡 IoT & Embedded Communication: Extensive experience design-engineering end-to-end telemetry ingress systems using LoRaWAN, Bluetooth Low Energy, SS7, and RFID.
- 🤝 Mentorship & Community Leadership: Passionate about raising the bar for engineering quality. Over the years, I have actively mentored developers, co-founded the Dutch Android User Group and The Things Network Arnhem, and served as a Google Developer Expert on IoT (2017–2023).
My academic background in physics and physical chemistry has honed my rigorous analytical approach, enabling me to unpack and solve complex architectural bottlenecks with precision.
Skills
- Golang
- Kotlin
- Java
- JavaScript
- TypeScript
- C/C++
- Python
- Embedded C
- Spring Boot
- Vanilla Kotlin
- React
- GraphQL
- JUnit
- Mockito
- RestAssured
- WireMock
- Flutter
- MongoDB
- PostgreSQL
- Redis
- Firebase
- Apache Cassandra
- MySQL
- CouchDB
- Firestore
- BigQuery
- Google Cloud Platform
- Amazon Web Services
- Apache Kafka
- JMS
- MQTT
- RabbitMQ
- Redis Streams
- Google PubSub
- LoRaWAN
- Bluetooth Low Energy
- RFID
- Bluetooth Classic
- Docker
- Kubernetes
- Helm
- Istio
- Vault
- ArgoCD
- GitLab CI
- Ansible
- Camunda BPM
- Camunda DMN
- OpenAI
- Gemini
- GenKit
- MCP
- Open Policy Agent
- Git
- Service-Oriented Architecture
- Scrum
- Open Source Development
- OSGi
- Google Developer Expert - IoT
- Co-founder - Dutch Android User Group
- Co-founder - Things Network Arnhem
- Mentor
Jobs
- consulant
- 2020-now
- owner/ consulant
- 2014-now
- consulant
- 2022-now
- software engineer/ architect
- 2006-2020
- software engineer
- 2005-2006
- software engineer
- 2003-2004
- software engineer
- 2001-2002
Soft skills
A collection of efforts to which I contributed
Projects
A collection of efforts to which I contributed
Education
VU Amsterdam / Nikhef
Focused on research at the intersection of nuclear physics and advanced physical-chemical medical diagnostics.
Radboud University Nijmegen
Completed. Rigorous training in analytical chemistry, molecular physics, and spectroscopy, honing strong core research and analytical skills.
Professional Certifications & Training
- Camunda Training (Process Automation & BPMN) - 2020
- Workshop Software Architecture (Dana Bredemeyer) - 2009
- Sun Certified Developer for the Java 2 Platform (SUN) - 2005
- Object-Oriented Analysis and Design (CompuTrain) - 2005
- Sun Certified Programmer for the Java Platform 1.4 (SUN) - 2004
- Training IP Telephony - 2004
- ‘Natural-Access’ & SS7-ISUP Telephony Training (NMS) - 2004
- C++ Programming Language (AT Computing) - 2003