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coskundeniz89/README.md

Coşkun Deniz

Senior Full-Stack & Backend Engineer | .NET, Java, AI Workflow

I build production-oriented .NET/Java backend systems, full-stack business applications, AI-assisted workflow tools, and internal business applications.

LinkedIn GitHub


About

I am a senior full-stack and backend engineer who has been building software professionally since 2012. I have completed 14 years in the industry and I am currently in my 15th year.

My strongest areas are .NET / ASP.NET Core, Java / Spring, PostgreSQL / SQL-backed business systems, authentication and authorization, Dockerized deployment, API integrations, workflow automation, and maintainable product architecture.

I work best where software meets real operations: documents, emails, approvals, tickets, dashboards, user roles, notifications, integrations, technical debt, and business processes that need to become reliable systems.


What I Build

  • .NET / ASP.NET Core backend systems and REST APIs
  • Java / Spring backend systems
  • Full-stack business applications
  • AI-assisted internal tools and workflow automation
  • RAG, document processing, and knowledge assistant systems
  • Email-to-ticket and operations automation flows
  • PostgreSQL / SQL-backed business applications
  • Authentication, authorization, RBAC, JWT, OAuth, and OIDC flows
  • Dockerized deployment foundations and production readiness
  • Legacy .NET modernization roadmaps
  • Modular monolith and service-based platform foundations
  • React / Angular / TypeScript interfaces connected to real backend workflows

Core Stack

Backend & APIs

.NET C# ASP.NET Core Java Spring Boot REST API Entity Framework

Data & Workflow

PostgreSQL SQL Server Oracle Redis Workflow Automation

Frontend

React Angular TypeScript JavaScript

DevOps & Infrastructure

Docker NGINX Linux Jenkins GitLab CI

Architecture & Identity

Keycloak OAuth2 OpenID Connect JWT RBAC API Gateway


Current Focus

  • AI workflow automation for real business processes
  • Internal tools that connect documents, emails, tickets, and approvals
  • Production-ready .NET / Java backend architecture
  • Full-stack business application delivery
  • PostgreSQL-backed SaaS and business systems
  • Authentication and authorization foundations
  • Legacy .NET modernization without unnecessary rewrites
  • Vertical AI product foundations and product-studio workflows

Engineering Approach

I do not approach projects as isolated coding tasks. I first try to understand the business process, users, roles, data flow, approvals, documents, notifications, and operational bottlenecks.

Then I translate that process into a maintainable technical architecture with clear module boundaries, reliable APIs, secure identity flows, practical deployment, and enough structure to evolve without over-engineering.


Connect

LinkedIn · GitHub

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