Gunther Van Geetsom

Platform Staff Engineer | Java & Spring Boot Ecosystem | Asynchronous Event-Driven Systems | Kubernetes & Cloud-Native Modernization

Mechelen, Flemish Region, Belgium

About

Platform Staff Engineer | Enterprise Backend Architect | Cloud-Native Specialist I am an enterprise-focused Platform Staff Engineer and Software Architect specialized in defining the long-term technical strategy and technical roadmaps for multi-tenant ecosystems. With a deep-rooted foundation in the Java ecosystem and asynchronous processing, I bridge the gap between complex business domains, volatile government regulations, and high-performance engineering. What I Bring to the Table: - Ecosystem & Platform Strategy: Experienced in driving the architectural evolution of shared foundational platform services, enabling multiple independent, specialized software suites to scale efficiently without architectural friction. - High-Throughput Asynchronous Architecture: Expert in designing decoupled, event-driven microservices architectures utilizing Java, Spring Boot, and Apache Kafka / Kafka Streams, with zero-fault tolerance for mission-critical invoicing engines and secure patient data flows. - Cloud-Native Modernization: Proven track record in orchestrating high-stakes infrastructure transformations, migrating complex legacy JVM architectures to containerized Kubernetes (K8s) environments while optimizing system resilience and DevOps throughput. - Engineering Excellence & Leadership: Passionate about establishing technical governance, defining software engineering best practices, and mentoring high-performing engineering teams to turn abstract business features into clean, robust blueprints. Core Expertise Matrix: - Strategic: Enterprise Architecture, Platform Engineering, Technical Roadmap Design, Feature Translation, Government Homologation & Compliance. - Backend & Integration: Java (EE/SE), Spring Boot, Apache Kafka & Kafka Streams, Hazelcast (Distributed Caching), Spring Security, Optaplanner, Hibernate/JPA. - Cloud & Infrastructure: Kubernetes (K8s), Docker, CI/CD (GitHub Actions), ArgoCD. - Data & Testing: MySQL, Elasticsearch, Cucumber (BDD), JUnit 5. - Frontend Engineering: React, Redux, TypeScript, Angular. Looking for high-impact enterprise challenges, cloud-native modernization tracks, and complex platform engineering roles.

Experience

  • Corilus (Vilvoorde · Hybrid)
    • Staff engineer
      Aug 2025 - Present · 11 mos

      As a Platform Staff Engineer, I define the long-term technical strategy and architectural roadmap for an enterprise-grade ecosystem that powers multiple specialized software suites across diverse healthcare sectors (including primary care, dental, and nursing). I lead the design and expansion of our central platform services, ensuring high-scale reliability, seamless integration, and market-leading performance. Key Achievements & Impact: - Cross-Product Platform Strategy: Spearheaded the technical evolution and unification of core platform services, enabling multiple independent software products to scale efficiently on a shared, robust foundation. - Regulatory Domain Abstraction: Architected decoupled software layers to seamlessly integrate evolving federal regulations and healthcare legislation, ensuring strict compliance while enabling decentralized development teams to deliver features autonomously. - Long-Term Ecosystem Architecture: Responsible for driving the architectural vision to modernize legacy components, reducing technical debt, and ensuring the platform's agility to adapt to shifting market and regulatory demands.

    • Tech lead + team lead
      Jan 2021 - Jul 2025 · 4 yrs 7 mos

      Stepped into the Tech/Team Lead role to drive agile delivery and foster a high-performing engineering culture for a market-leading application. Acted as the crucial bridge between long-term platform architecture and daily team execution. Key Responsibilities & Impact: - Team Enabling & Mentorship: Conducted structured 1-on-1s and technical mentoring to align personal developer growth with project milestones, ensuring high engagement and a collaborative team dynamic. - Agile Delivery & Technical Governance: Facilitated refinements, sprint planning, and estimation sessions. Streamlined technical requirements to ensure predictable, high-quality feature delivery. - Technical Backup & Guardrail: Served as the ultimate technical backup for the team, resolving complex blockers and safeguarding code quality and architectural standards during high-pressure releases.

    • Senior Full stack-ontwikkelaar
      Mar 2020 - Dec 2020 · 10 mos

      Joined the project pre-launch to drive the core backend architecture and cloud migration, specializing in high-throughput asynchronous systems, complex financial engines, and establishing enterprise engineering best practices. Key Responsibilities & Impact: - Feature Translation & Domain Modeling: Partnered closely with product owners to refine complex medical and business features, translating abstract functional requirements into clean, scalable backend designs. - Asynchronous Microservices Architecture: Architected and engineered decoupled, event-driven microservices leveraging Java/Spring Boot and Apache Kafka to ensure reliable, high-performance processing of sensitive patient data and financial transaction queues. - Engineering Best Practices & Governance: Defined and enforced team-wide development standards, core design patterns, and testing frameworks, significantly reducing technical debt and improving code maintainability. - Cloud-Native Modernization & Homologation: Facilitated the technical transition from traditional JVM environments to a containerized Kubernetes platform, while ensuring all core invoicing engines met strict government homologation and compliance standards. Comprehensive Tech Stack & Ecosystem: - Backend & Frameworks: Java (EE/SE), Maven, Spring Boot, Spring Cloud, Spring Security, Spring MVC, Optaplanner, Hibernate/JPA, API driven microservices - Messaging & Caching: Apache Kafka, Kafka Streams, Hazelcast (Distributed Caching), Event-Driven Architecture - Data, Search & Analytics: MySQL, Enterprise Search (Elasticsearch), Machine Learning (SciKit) - Cloud, DevOps & Containers: Kubernetes (K8s), Docker, Cloud-Native Infrastructure, CI/CD Pipelines (Azure DevOps), AWS - Testing & Quality Assurance: Cucumber (BDD), JUnit, Mockito, SonarQube (Clean Code Best Practices) - Frontend Engineering: React, Redux, TypeScript, Bootstrap UI

  • Oprichter at GVG Solutions BV
    Mar 2020 - Present · 6 yrs 4 mos

  • Foreach (Merksem)
    • Technical Lead
      Jan 2017 - Mar 2020 · 3 yrs 3 mos

    • Full stack software egineer
      Sep 2016 - Dec 2016 · 4 mos

  • HP (3 yrs 2 mos)
    • Technical lead
      Apr 2016 - Sep 2016 · 6 mos

    • Java Software Engineer
      Aug 2013 - Sep 2016 · 3 yrs 2 mos