Особисті дані приховані

EMİR ACIKGÖZ
F U L L- S TA C K D E V E L O P E R
[відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація»)
github.com/Naynlost | [відкрити контакти](див. вище в блоці «контактна інформація») | kelepiredustu.com

SUMMARY

Computer Engineering graduate from Yalova University with 4 years of professional full-stack software development
experience. I design and deliver complete software solutions end to end — from responsive, user-friendly frontends to
robust, high-performance backends, secure database architectures, RESTful and GraphQL APIs, and automated workflows.
More recently I have focused on LLM- and RAG-based systems, vector search, and authorization-aware AI architectures. I
enjoy turning real business requirements into production-ready software, optimizing performance, and continuously
learning new technologies to build clean, scalable, and maintainable systems.

WORK EXPERIENCE

Full-Stack Developer September 2024 – June 2026
Gel Gel Balon – Kelepiredüştü · Flagship live e-commerce platform: kelepiredustu.com
• Rebuilt and modernized the company's existing websites and platforms from the ground up, and developed new e-
commerce sites from scratch.
• Took an active role on the B2B side of the business, building and maintaining the dealer/wholesale-facing platform
and its order flows alongside the B2C storefronts.
• Created XML- and JSON-based data feeds to power product integrations, and optimized the SEO infrastructure across
all platforms to meet search-engine standards.
• Designed and operated the database architecture directly in production under heavy customer traffic, maximizing
performance through schema design, indexing strategies, and advanced query optimization.
• Automated the entire order-to-delivery pipeline end to end, replacing manual operations with script-based workflows
— accelerating the customer journey and significantly reducing the operations team's workload.
• Analyzed business requirements directly from non-technical stakeholders and translated them into complete,
production-ready software products quickly, without the need for an intermediary.

Full-Stack Developer February 2024 – May 2024
Tersan Shipyard – Yalova
• Built internal web applications that digitized processes field and office teams had been running manually, owning
every layer from the interface to the service layer and database.
• Developed RESTful APIs and services that consolidated data flow between existing systems into a single layer, and
powered the reporting screens from those services.
• Prototyped an LLM- and RAG-based question-answering assistant over corporate documents and technical
specifications, chunking and embedding files to make them searchable in natural language.
• Worked on prompt design, context management, and source-cited answer generation to improve the accuracy and
traceability of model outputs.
• Built interactive dashboards that combined visual content with data-driven interfaces so technical teams could grasp
processes at a glance.

SQL Developer September 2023 – November 2023
Netlog Logistics
• Took full ownership of database design, development, and security processes.
• Structured the MySQL database architecture and significantly improved overall performance through continuous
optimization and query tuning.
• Engineered robust security layers, implementing advanced encryption methods including AES and RSA to protect
sensitive data.
• Integrated comprehensive authorization models using RBAC and ABAC for secure, granular access control.

Full-Stack Developer August 2021 – April 2023
PYKSYS
• Drove the full software development lifecycle by building an end-to-end project.
• Developed responsive, user-friendly interfaces using HTML, CSS, JavaScript, React, Next.js, and TypeScript.
• Expanded the backend architecture with Node.js and built RESTful APIs through Next.js API Routes.
• Optimized application performance with modern web techniques such as On-Demand Revalidation, ensuring
seamless data flow between client and server.

PROJECTS

LLM Office Worker Personal Project
.NET · Semantic Kernel · Google Gemini · PostgreSQL + pgvector · EF Core · Blazor · Docker · Google Cloud Run
• Built a RAG-based assistant for chatting with corporate documents in natural language, moving authorization out of
answer generation and into the retrieval layer: user permissions are matched against document labels inside a single
SQL query, so unauthorized documents never enter the search results and their very existence is not disclosed.
• Created a layered security model by defining default-deny policies at the database level with PostgreSQL Row-Level
Security, so even a bug in application code cannot cause the database to return unauthorized data.
• Integrated a 198-scenario automated security test suite into CI, exercising 6 attack techniques — including prompt
injection, role impersonation, and authority claims — across 4 user roles; the system passes with 0 permission leaks,
and a single leak blocks deployment.
• Designed the end-to-end hybrid retrieval pipeline: document chunking, vectorization with Gemini embeddings, and
pgvector queries combining vector similarity with full-text search; answers are streamed with source citations.
• Packaged the application with Docker and deployed it to production on Google Cloud Run; every document access is
written to audit logs, and the system degrades gracefully on quota and provider errors.

Core Banking API Personal Project
C# · .NET / ASP.NET Core · PostgreSQL · EF Core · RabbitMQ · Docker
• Developed a layered backend in C# and ASP.NET Core following Clean Architecture principles, with architectural rules
enforced automatically through NetArchTest.
• Implemented a double-entry accounting ledger on PostgreSQL and Entity Framework Core; balances are never stored
in a single field but derived from immutable ledger entries.
• Prevented duplicate operations and balance inconsistencies on concurrent transfers using Idempotency-Key handling
and EF Core optimistic locking.
• Applied the Outbox pattern over RabbitMQ to publish transfer events asynchronously with lossless, at-least-once
delivery guarantees, and wrote separate consumers for fraud detection and notifications.
• Added daily transfer limits, KYC checks, rule-based fraud scoring, a role-based review flow, and multi-currency/cross-
rate support, using FluentValidation for request validation.
• Set up JWT-based authentication, refresh token rotation, and rate limiting, with live API documentation served
through OpenAPI/Scalar.
• Made the system observable end to end with Serilog logging, distributed tracing via OpenTelemetry and Jaeger, and
metrics/dashboards via Prometheus and Grafana.

• Wrote 200+ tests against real Postgres and RabbitMQ instances using xUnit, Shouldly, and Testcontainers, set up a CI
pipeline with GitHub Actions and load-tested with k6, and packaged the full service stack to start with a single Docker
Compose command.

TECHNICAL SKILLS

Languages & Frameworks: JavaScript, TypeScript, React, Next.js, Vue.js, Node.js, Nest.js, C#, .NET / ASP.NET Core, Blazor,
Python
Web & CMS: WordPress, HTML5, CSS3, Tailwind CSS, Bootstrap, Responsive Design, SEO Optimization
APIs & Data: RESTful API, GraphQL, XML / JSON Data Feeds, Web Scraping, RabbitMQ, Outbox Pattern
Databases: PostgreSQL (pgvector, Row-Level Security), MySQL, MongoDB, EF Core, Schema Design, Indexing, Query
Optimization
AI: LLM, RAG (Retrieval-Augmented Generation), Semantic Kernel, Google Gemini, Embeddings & Vector Search, Hybrid
Retrieval, Prompt Injection Defense
Cloud & DevOps: Docker, Docker Compose, AWS, Google Cloud Run, GitHub Actions (CI/CD)
Observability & Testing: OpenTelemetry, Jaeger, Prometheus, Grafana, Serilog, xUnit, Testcontainers, k6
Security: AES & RSA Encryption, JWT & Refresh Token Rotation, RBAC, ABAC, Row-Level Security, Rate Limiting
Automation & Other: Workflow Automation, Instagram Bot Development, Clean Architecture, Test Automation

EDUCATION

B.Sc. in Computer Engineering 2019 – 2025
Yalova University

CERTIFICATIONS

English Language Certificate — B2 Level (Upper-Intermediate)

LANGUAGES

Turkish (Native) | English (Professional Working Proficiency, B2) | Russian (Conversational) | German (Elementary)