Othmane DR OthDr

I don't just implement features. I design systems.

◆ Engineering Profile

I build backend systems where correctness, security and change matter: identity onboarding, regulated workflows, electronic signatures and enterprise integration. Java and Spring at the core, workflows in BPMN, and enough full-stack range to own a feature from UI to database.

Architecture → Security → Integration → Containerization → CI/CD

◆ Core Expertise

🏗️ Distributed Systems Microservices, SAGA-based distributed transactions, Spring Cloud Gateway, event-driven messaging with RabbitMQ, Backend-for-Frontend layers	🔐 Identity & Security Keycloak as the central auth layer, OIDC and SAML flows, JWT, RBAC, encryption of sensitive financial data	🔄 Process Automation Regulatory compliance encoded as Camunda BPMN 2.0 workflows that change without redeployment
🪪 Digital Identity & E-KYC Digital bank onboarding, document processing, electronic signature services integrated into banking workflows	☁️ Delivery Docker, CI/CD on Jenkins, GitLab CI and GitHub Actions, Azure, MinIO	🎨 Full-Stack React, TypeScript, Redux, Angular, TailwindCSS, plus .NET Core and Node.js backends

◆ Tech Stack

Highlighted rows are where I go deepest.

⭐ Core engineering

⭐ Architecture, messaging & identity

Full-stack & additional backends	Data
⭐ Cloud & DevOps	Tooling

◆ Engineering Mindset

I choose architecture by trade-offs, not by pattern for its own sake: the right level of distribution, consistency, coupling and complexity for the problem.

Scalability _{distribute only where load demands it}	Performance _{fewer round trips, smaller payloads}	Security _{architectural, not bolted on}	Resilience _{fail predictably, recover cleanly}	Maintainability _{change rules without redeploying}
Consistency _{SAGA vs. strict transactions}	Coupling _{sync REST vs. async messaging}	Availability _{onboarding stays up under load}	Observability _{systems that explain themselves}	Operational cost _{complexity has a running price}

◆ What I Build

🪪 Digital identity & E-KYC
_{Onboarding pipelines driven by BPMN workflows, so rules change without redeploying.}

✍️ Electronic signature services
_{Embeddable signing as a SaaS product for banking workflows.}

🛡️ Secure service platforms
_{Gateways, Keycloak (OIDC / SAML), JWT and RBAC across microservices.}

⚡ Event-driven systems
_{RabbitMQ messaging and SAGA flows that keep services decoupled and available.}

→ Case studies on my portfolio

◆ GitHub Activity

Engineering systems that scale. Securing systems that matter.

_{📫 oth.derrar@gmail.com · 🌐 Portfolio · 💼 LinkedIn}

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