CV & Profile

Technical Architect / Senior Full-Stack Engineer

Konrad Gajda

I turn unclear integration, identity and modernization work into systems teams can explain, test and operate.

18+ years across regulated, industrial and public-sector environments taught me to protect business behavior while moving platforms forward.

Available through 0101 BV · Belgium, EU and remote-first teams.

konrad@gajda.bewww.gajda.beLinkedInGitHub

Mechelen, Belgium

18+Years enterprise IT
Full-stackArchitecture through delivery
EnterpriseRegulated and complex environments

At a glance

Target roles
Technical Architect · Senior Full-Stack Engineer · Solution Architect-track
Primary stack
React · Angular · .NET · Azure · APIs and integration
Domains
Regulated enterprise · industrial engineering · public sector
Engagement
Freelance through 0101 BV · Belgium, EU and remote-first teams

Recruiter Snapshot

I help teams move complex platforms without losing the plot: clarify boundaries, prove risky paths early and leave behind systems that are easier to operate.

  • Previous experience contributing in high-trust multinational environments.
  • Master of Science in Information Technology and Bachelor of Science in Computer Science.
  • Current assignment combines hands-on enterprise application delivery with technical architecture contribution.
  • Repeated delivery in regulated and operationally sensitive enterprise environments.
  • Comfortable owning complete delivery slices when needed: clarifying requirements, defining contracts, implementing UI/API/integration pieces, testing and documenting the result.
  • Strong record in modernization, performance recovery, data migration, event-driven systems, secure identity flows and maintainable frontend architecture.

Engineering Principles

The way I prefer to make architecture useful: clear boundaries, testable contracts, secure defaults and systems teams can maintain.

Pragmatic architecture first

Architecture should clarify decisions, constraints and ownership. It should make delivery easier for the team using it, not heavier.

Contracts before coupling

OpenAPI contracts, explicit integration boundaries and independent validation reduce coordination cost between frontend, backend and platform teams.

Secure by default

Identity, secret handling, access windows, auditability and least-privilege boundaries belong in the design, not as late-stage cleanup.

Maintainability is a feature

Reusable components, clean service boundaries, tests, readable documentation and observable deployments keep systems affordable after the first release.

Selected Case Studies

Selected examples that show architecture judgment, delivery ownership and backend/API direction without exposing client-confidential details.

Architecture and delivery contribution

Designing Maintainable Integration Boundaries

A generalized case study about reducing coupling and making enterprise integrations easier to test, review and operate.

IntegrationArchitectureTestingObservability

Modernization and delivery contribution

Modernizing Without Losing Business Behavior

A generalized case study about staged modernization, compatibility risk and preserving trusted behavior.

ModernizationArchitectureValidationDelivery

Senior engineering contribution

Making Delivery Quality Visible

A generalized case study about maintainability, automated verification, documentation and team handover.

Software qualityTestingDocumentationCollaboration

Professional Experience

Enterprise software delivery, integration architecture, cloud-enabled systems and hands-on engineering.

  1. 2025/01 - Present

    Technical Architect / Senior Full-Stack Engineer

    0101 BV - Client assignment for Ypto (SNCB/NMBS Group)

    Contributing to enterprise application modernization, technical architecture, integration, performance improvement and full-stack delivery.

  2. 2022/11 - 2024/12

    Senior Full-Stack Developer

    0101 BV - Client assignment for Euroclear

    Contributed to enterprise software delivery in a regulated financial-services environment.

    • Delivered maintainable frontend and backend components for business-critical enterprise applications.
    • Contributed to integration, data processing, automated delivery, documentation and production support.
    • Worked with cross-functional teams in a quality- and compliance-conscious environment.

  3. 2022/01 - 2022/10

    Senior Full-Stack Developer

    0101 BV - Client assignment for Atlas Copco

    Developed enterprise engineering and analysis applications for an international industrial organization.

    • Built user-facing tools and backend services for computational engineering workflows.
    • Improved maintainability through clear service boundaries, asynchronous processing and reusable validation tooling.
    • Supported reliable comparison of existing and modernized application behavior.

  4. 2018/04 - 2021/12

    Senior Full-Stack Developer

    0101 BV - Client assignment for Zurich Insurance Group

    Delivered and modernized business applications for an international insurance organization.

    • Developed frontend and backend features for regulated enterprise workflows.
    • Contributed to legacy modernization and controlled data migration while preserving business behavior.
    • Applied automated testing, code review and secure delivery practices.

  5. 2016 - Present

    Company Director / Independent IT Consultant

    0101 BV

    Founder and independent consultant delivering software engineering, architecture, systems integration, hosting, infrastructure and business IT services.

    • Deliver freelance assignments for enterprise clients in regulated and technically complex environments.
    • Design, develop, deploy and support custom applications, APIs, databases, websites and integration solutions.
    • Operate Linux-based hosting and business infrastructure including web and email services, DNS, SSL/TLS, monitoring, backup, networking, telephony and security solutions.

  6. 2015/04 - 2016/06

    Independent IT Infrastructure Consultant

    Self-employed

    Provided design, modernization, installation and operational support for retail and small-business infrastructure clients in Belgium.

    • Delivered multi-site network, workstation, point-of-sale, surveillance-camera, telephony, VPN, backup and managed Wi-Fi modernization.
    • Developed and supported a custom food-labelling solution for Polsmaak.
    • Managed customer requirements, procurement, on-site installation, troubleshooting, documentation and ongoing support.

  7. 2010/08 - 2015/04

    IT Administrator / Web and Desktop Application Developer

    Batist SCRL - IT Department

    Responsible for business applications, servers, networks and end-user support.

    • Designed web and Windows desktop applications with C#, ASP.NET MVC, AJAX, JavaScript, XML, CSS and Visual Studio.
    • Developed an online ticket-sales and management application for theatre operations.
    • Automated Microsoft Office processes using .NET, VBA, VSTO, custom Word and Excel add-ins, reporting and mail-merge solutions.
    • Administered Windows Server and CentOS Linux production servers, routing, IPsec/OpenVPN and remote support workflows.

  8. 2007/08 - 2010/07

    Database Administrator / Application Developer

    NATO Headquarters

    Contributed as a database administrator and application developer in a high-trust multinational environment.

    • Supported data quality, reporting, application development and user assistance.
    • Contributed to modernization of internal business tools using broadly applicable software-engineering practices.
    • Worked carefully within formal operational and information-handling procedures.

  9. 2004/01 - 2006/12

    Staff Non-Commissioned Officer

    11th Armoured Cavalry Division - Polish Land Forces

    Supported military headquarters operations as a Staff NCO, Database Administrator and Application Developer.

    • Designed a specialized information system for annual physical-fitness assessment and reporting, based on headquarters requirements.
    • Implemented Microsoft Access/VBA offline operation, replication, database queries, reporting and official document generation from strict templates.
    • Supported database maintenance, data integrity, application deployment, troubleshooting and end-user assistance.