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Sebastiaan VellingerSV

Sebastiaan Vellinger

(IT) Business Analyst / Solution Architect / PO

€675/day
Lyon, FR
15+ years

Average response time: 1 hour

About Sebastiaan

As a seasoned System Architect and IT Business Analyst, I have over two decades of expertise in steering organisations through the intricacies of both operational and strategic business and IT solution development. My academic credentials, including a Bachelor's degree in Software Engineering and Business Informatics, coupled with a robust background in programming, provide me with a solid foundation that bridges the gap between business understanding and technological skills.

This unique blend of skills enables me to navigate effortlessly between high-level strategic discussions with board members and in-depth technical dialogues with developers. My experience spans a diverse array of functional areas, including business process management, enterprise application integration, and information analysis, as well as the design and development of information systems.

I am well-versed in a multitude of technologies, with a particular focus on SQL, Javascript, Python, AWS, Openshift, Oracle, and Java. My comprehensive technological knowledge ensures that I am equipped to tackle complex challenges and drive innovation within any organisation.
  • Dutch

    Native or bilingual

  • English

    Fluent

  • French

    Conversational

Can work on-site
Lyon (up to 50km)

Experience

  • Belastingdienst
    System Architect
    PUBLIC SECTOR
    January 2023 - Today (3 years and 5 months)
    Apeldoorn, Netherlands
    • Spearheaded the digital transformation of the Dutch tax authority's legacy systems as Solution Architect, driving the adoption of the legacy on-premise Multi-channel Reception (MKO) platform to a hybrid cloud environment for efficient digital declaration processing.
    • Championed the Scaled Agile Framework methodology, crafting enabler epics and collaborating on business epic creation to streamline the authority's digital services.
    • As a System Architect, played a pivotal role in defining the architectural runway within an agile team, ensuring robust and scalable infrastructure.
    • Authored enabler features with a focus on clarity and comprehensibility, effectively communicating technical requirements to diverse development teams.
    • Served as liason among client, business analyst, architects and implementation teams to syncrhonize IT efforts with business objectives.
    • Project solution architectur documented based on internal templates and Bizzdesign using ArchiMate modeling language.
  • TLSCONTACT
    Solution Architect & Product Owner
    DIGITAL AND IT
    September 2018 - August 2022 (3 years and 11 months)
    Lyon, France
    • Leading role in creating architectural solutions for multiple government VISA service projects, serving as a pivotal liaison between business objectives and technological implementation.
    • Utilized BPMN and UML to design and articulate system architectures to project boards.
    • Undertook a hybrid role as Solution Architect and Product Owner, driving both technical and management reporting aspects of a key U.S. Government project.
    • Designed a digital platform for U.S. travel authorization, integrating adaptable solutions for courier services and online/bank payment processes within an AWS Cloud and Redhat Openshift environment, leveraging microservices architecture.
    • Engineered a scalable, generic process for transaction reconciliation, compatible with various national online payment systems, ensuring compliance with task orders and regulations.
    • Developed a secure, cloud-based digital document delivery system for the UK VISA application process, incorporating country-specific data sovereignty requirements (DPA-2018 & GDPR).
    • Conducted the design of functional and technical solutions for a dynamic visa services environment, enhancing operational efficiency and digitization processes.
    • Collaborated with key internal (Finance, Operations, IT) and external (Government) stakeholders to innovate and streamline visa document handling, achieving significant cost reductions.
    • Achieved a 50% reduction in annual operational expenses (OPEX) and eliminated multi-million dollar capital expenditures (CAPEX) by transitioning from licensed external software to an open-source, internally developed solution.
    • Pioneered a new document digitization process for the Dutch Government, subsequently scaling the solution across multiple Schengen countries, reinforcing the shift to in-house software development.
    • Delivered a cloud-based technical architecture utilizing AWS, integrating seamlessly with the Dutch government's stack for optimal performance and reliability.
    AWS Intégration Business intelligence Datawarehouse Architecture Vue.js product owner
  • Stedin
    Senior Oracle Apex Consultant
    ENERGY AND UTILITIES
    September 2014 - July 2018 (3 years and 10 months)
    Rotterdam, Netherlands
    As a senior Oracle Apex Consultant I was responsible for in-house developed applications to support distribution network operator (DNO) operational processes.

    Within this team my role was focused on creating technical specifications and in collaboration with the business for (new) functional requirements. During this period the company was changing from a classical project approach towards Agile including Scaled Agile Framework (SAFe).

    As a lead developer I was participating in writing user stories.

Recommendations

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Education

  • BI
    Amsterdam University of Applied Sciences
    2001
    BI

Skill set (26)

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