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#Java EE 5 items linked

Case studies, ventures, and publications tagged with Java EE across Samuel Mofrad's architecture portfolio.

Architectural Case Studies (4)

Samuel Mofrad

Samuel Mofrad

🏢 Enterprise & Employer
Enterprise Solutions Architect • Federal Office of Justice (Bundesamt für Justiz) • Public Sector & Justice
Sovereign Public Sector • Federal Scale • ⏱ •

Federal Office of Justice: Sovereign Monolith-to-Microservices Modernization

Spearheaded the zero-downtime decoupling of core monolithic justice administration systems into secure, containerized Spring Boot microservices for the Federal Office of Justice (*Bundesamt für Justiz*).

• Architectural Implementation:
  • Modernized mission-critical legacy Java EE administrative workflows into decoupled microservices adhering to strict BSI IT-Grundschutz security compliance.
  • Standardized REST / OpenAPI gateways with Keycloak SAML/OIDC federated identity management for secure multi-agency interoperability.
  • Supported peak public and inter-agency access spikes with sub-100ms response latencies and high availability.
  • Built automated end-to-end security regression test suites and container hardening preventing data leakage across distributed ingress gateways.
Spring Cloud Microservices Migration BSI IT-Grundschutz Keycloak Java EE
♥ ★ 58 reactions
Verified Architecture • European Enterprise
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Samuel Mofrad

Samuel Mofrad

🏢 Enterprise & Employer
Tech Lead & Systems Architect • Landtag of Lower Saxony (Niedersächsischer Landtag) • Public Sector & Parliamentary
Sovereign Parliament • High Availability • ⏱ •

Parliamentary Digital Infrastructure & Secure Identity Platform

Served as Tech Lead directing the technical architecture, security modernization, and digital platform engineering for the Landtag of Lower Saxony (*Niedersächsischer Landtag*).

• Architectural Implementation:
  • Directed the technical transition of parliamentary portals and legislative documentation workflows to high-availability containerized services.
  • Implemented federated identity and granular role-based access controls using Keycloak SAML/OIDC compliant with strict German parliamentary security standards.
  • Designed resilient caching and gateway tiers ensuring uninterrupted uptime during high-profile live legislative sessions and public debate broadcasts.
  • Mentored public-sector engineering teams in enterprise Java best practices, CI/CD automation, and secure coding standards.
Tech Lead Keycloak Java EE Kubernetes BSI IT-Grundschutz
♥ ★ 54 reactions
Verified Architecture • European Enterprise
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Samuel Mofrad

Samuel Mofrad

🏢 Enterprise & Employer
Lead Solutions Architect • Tier-1 European Banking Group • FinTech & Banking
Tier-1 Bank • €180M+ Daily Throughput • ⏱ •

High-Throughput SEPA Payment Gateway & Clearing Engine Modernization

Led architecture modernization for a Tier-1 German banking group, transitioning legacy batch clearing jobs to real-time ISO 20022 message processing.

• Architectural Implementation:
  • Designed an idempotent event-sourcing transactional ledger with event replay capabilities using Kafka and PostgreSQL.
  • Engineered resilient circuit breakers and rate limiters compliant with BaFin audit standards and PSD2 regulation.
  • Achieved 99.999% availability during peak transaction clearing windows (over €180M processed daily).
  • Cut transaction latency from batch windows down to sub-800ms real-time settlement.
Java EE Microservices ISO 20022 PostgreSQL Kafka
♥ ★ 44 reactions
Verified Architecture • European Enterprise
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Samuel Mofrad

Samuel Mofrad

📚 Open Source & Education
Author & Principal Architect • codeworking.org • CS Education & Engineering Leadership
Public Knowledge Base • 15+ Yrs Field Experience • ⏱ •

codeworking.org: Distributed Systems & Java Microservices Curricula

Authored comprehensive architectural deep dives, engineering decision blueprints, and practical computer science curricula translating 15+ years of enterprise Java and microservices production experience for engineering teams worldwide.

• Architectural Implementation:
  • Published battle-tested guides on zero-downtime database migrations (splitting monolithic schemas into microservices data stores).
  • Designed complete reference implementations demonstrating Kafka event-sourcing ledgers and outbox patterns in Java Spring Boot.
  • Formulated resilient service-to-service communication guides comparing gRPC, JSON-RPC, and async messaging under failure scenarios.
  • Mentored mid-to-senior software engineers through structured architectural review rubrics and hands-on production diagnostics.
Microservices Java EE Apache Kafka Architecture Distributed Systems
♥ ★ 73 reactions
Verified Architecture • European Enterprise
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Profile Experience (1)

Senior Enterprise Java Engineer & Microservices Lead

Tier-1 Enterprise Delivery (DAX/SMI Ecosystems incl. VW, BMW, SAP) • 2003 – 2018 • Evolution from Developer to Tech Lead

15+ years delivering enterprise Java EE backends, high-throughput database systems, and event-driven architectures.