18.08.2026 aktualisiert

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100 % verfügbar

API Design & Security Expert | Strategic Consulting & Implementation for Mid-Sized Companies

Oldenburg (Oldb), Deutschland
Nur Remote
Oldenburg (Oldb), Deutschland
Nur Remote

Profilanlagen

BEC Vantage Certificate.pdf
CAE Certificate.pdf
Soeren_Johanson_CV_2026.pdf

Skills

JavaScriptPHPAPIsAmazon Web ServicesArchitekturAuditsBusiness To BusinessUnternehmensberatungC#CSSBildungstechnologienSaasContinuous DeliveryContinuous IntegrationPerlEnterprise Resource PlanningGitHubPythonPostgreSQLMariaDBMySQLOpen SourceScrumRuby On RailsSvelteErfahrung im Insurtech-BereichSales ManagementSicherheit VerwaltungSQLiteIntegration (Software)TypeScriptOpenapiDatenverarbeitungGoogle CloudFlaskVue.jsGitLabGraphQLDSGVOApi DesignFintechRestful ApisDevSecOps
With nearly a decade of hands-on experience, I specialise in designing, securing, and scaling APIs that power real-world business outcomes. From securing APIs serving 50M+ users to enabling enterprise deals through robust API strategies, I’ve helped organisations across e-commerce, SaaS, InsurTech, EdTech and public sector platforms transform their API ecosystems.

Core competencies
  • API Design (REST & GraphQL) incl. OpenAPI & HATEOAS
  • DevSecOps & CI/CD integration
  • GDPR-compliant architecture & data handling
  • Developer experience optimisation
Key activities
  • Modernising legacy APIs for mid-market companies
  • Designing scalable API-first architectures
  • Integrating security best practices early in the lifecycle
  • Conducting API audits & developer enablement workshops
  • Building internal tools and post-sales platforms based on secure APIs
Industries served
  • B2B SaaS
  • FinTech / InsurTech
  • ERP & e-commerce
  • Public education and open source
  • DTC consumer platforms

Erfahrung

Berufserfahrung5 - 10 Jahre
Freelancer seit2023

Sprachen

DeutschMutterspracheEnglischMutterspracheSchwedischMuttersprache

Zertifikate

Cambridge English: Advanced (CEFR Level: C2)

Cambridge English Language Assessment

2016

Cambridge English: Business Vantage (CEFR Level: C1)

Cambridge English Language Assessment

2016


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