Azim Haffar/
azimx.dev
Azim Haffar

Software Engineering Student
Backend / Applied AI

Mersin, Türkiye

Internships from 17 Jan 2027

View résumé
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ENGINEERING / SELECTED WORKJava · Python · A little curiosity

Hello, I’m Azim

Backend thinking.
Practical software.

I build with Java and Python, from event-driven backends to applied AI tools. My experience includes a backend internship at Trendyol and paid Python/LLM development for Kvote.

Explore my work View résumé

Full-time internships from 17 January 20274–12 months · Open to relocation

What happens when Kafka stops?

01 / Selected work

The interface is only the beginning.

Explore the product, follow a decision, then inspect the evidence.

01 / Featured engineering story

SeatLedger Deployed demo

One seat left.
Two people booking.

I built a reservation system to explore what happens when requests compete, holds expire, and clients retry—with a deployed demo and reproducible engineering evidence.

Try the demoEngineering story

Synthetic shared accounts · Free backend may take a minute or more to wake · No personal information

Deployed SeatLedger portfolio demo showing clearly labeled synthetic accounts and free community eventsActual product capture
Public event browsing, free registration, and organizer analytics. A portfolio demo; real-user release remains incomplete.
  1. 01 / Protect capacity

    Serialize reservation changes at the event.

  2. 02 / Handle retries

    Persist idempotent outcomes with lifecycle changes.

  3. 03 / Explain the numbers

    Build replayable analytics apart from live inventory.

Verification and demo limitations

18 October 2026 · Deployed portfolio demo · CI: 265 backend, 56 analytics and 28 browser tests passed, zero failures/errors/skips. Synthetic evidence, not production load or real-user validation.

Free backend sleeps; email delivery is unavailable. Real-user launch still needs email and completion of privacy/recovery work. Shared demo accounts only; no personal information.

Inspect verification scope

More ways I investigate software.

Recovery, useful feedback, and a view inside training.

02Event-driven backend
OrderFlow dashboard showing order activity and infrastructure status

Local order-processing dashboard

OrderFlow

I built an order-processing backend that accepts work while Kafka is unavailable, then recovers without deducting stock twice in the verified local scenario.

  • Durable work during a Kafka outage
  • Recovery without a second stock deduction
  • 17 tests covering lifecycle and reliability

Scope & limitsLocal verification, not a load benchmark. Single publisher; no authentication or public hosted demo.

Java / Spring Boot / Kafka / PostgreSQL / Redis / Testcontainers

Case studyDemo guideCode
Try outage & recovery
03Full-stack / Applied AI
HireLens offline analysis with illustrative synthetic match and ATS scores

Offline fixture · synthetic CV

HireLens

I built a CV analysis workflow and tested an offline journey from upload and feedback to tracking, history, and deletion using synthetic inputs.

  • Upload → feedback → tracking → deletion
  • Desktop + mobile offline journeys
  • Separate scoring and generated advice

Scope & limitsLatest improvements are local and unpublished. Mocked providers; live authentication and model quality remain unverified.

Python / FastAPI / React / JavaScript / Supabase / Groq

Case studyDemo guideCode
04ML tooling / Real-time systems
ML Training Inspector showing measured synthetic CPU demo loss, accuracy and gradient charts

Measured synthetic CPU demo

ML Training Inspector

I built a live training dashboard and verified its charts and epoch table against a reproducible synthetic PyTorch CPU run.

  • Live metrics matched a synthetic CPU run
  • Explicit stop, error and completion states
  • Checkpoint loading verified; resume absent

Scope & limitsSynthetic results demonstrate the pipeline, not model quality. Resume is absent; one worker and one shared run.

Python / PyTorch / FastAPI / WebSockets / React / JavaScript

Case studyDemo guideCode
Explore the training run

02 / Professional experience

Learning with real teams.

A backend internship and paid development work. Different contexts, the same attention to how software behaves.

Feb 2026 – Apr 2026

Freelance

Kvote 2 Hjælperen

Freelance Software Developer

Remote

  • Delivered a paid Python/LLM study tool that generated practice questions using students' study materials as context.
  • Implemented a separate LLM evaluation step to review relevance, grounding, clarity, and answerability against the source material.
  • Added application-level checks for required fields and response structure, with rejection or regeneration of questions that failed checks.

Python / LLM API Integration

Jun 2025 – Sep 2025

Internship

Trendyol

Backend Engineering Intern

Istanbul, Türkiye · Onsite

  • Built and demonstrated a Coupon Usage Tracker microservice with Spring Boot, PostgreSQL persistence, and REST endpoints for recording usage, looking up user usage, and checking coupon exhaustion.
  • Wrote unit and integration tests using Testcontainers, documented the service, and packaged it with Docker.
  • Contributed API changes, validation, bug fixes, and tests within existing backend services, and presented engineering decisions to the team.

Java / Spring Boot / PostgreSQL / JUnit / Testcontainers / Docker

03 / Engineering toolkit

Tools, tied to the work.

Backend is my foundation. Select a tool to see where I have used it and what the evidence supports.

ENGINEERING TOOLKITBackend / Applied AI
Backend
Cloud & DevOps
Data / Messaging
Testing
Applied AI & ML tooling
Frontend

Backend is my foundation. Explore a tool for project context and evidence.

04 / The person behind the code

Curiosity, with a practical side.

I’m a Software Engineering student based in Mersin, Türkiye. My strongest experience is in backend development, with applied AI work alongside it.

I’m looking for an internship where I can contribute, learn from a team, and deepen my engineering judgment.

What draws me in

I enjoy tracing what happens behind an interface, especially when something fails or behaves unexpectedly. I like building tools that make those hidden processes easier to understand—from order recovery to live training feedback.

Explore one of those questions: what survives a Kafka outage?

Education / ongoing

B.Sc. Software Engineering

OSTİM Technical University, Türkiye
English-taught program

Expected graduationAugust 2027

Languages

English C1German B1 · Goethe speaking moduleTurkish NativeArabic Native
  1. Ongoing

    Software engineering studies

  2. Jun 2025 – Sep 2025

    Trendyol internship

  3. Feb 2026 – Apr 2026

    Paid Kvote development

  4. Now

    Reliable systems & useful feedback

Beyond the projects / Selected learning

A room for learning.

Explore selected certificates, their scope, and the learning behind them.

Explore the gallery
05 / Let’s talk

Good work starts
with a conversation.

Open to paid technical internships from 17 January 2027, with Europe preferred and Türkiye also welcome. Available now for paid remote work that fits university commitments.

azim.haffar@gmail.com
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