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Open to backend roles

Kazım Kalaycı

Junior Backend Developer · Go & Java

I build concurrent backend services, REST APIs, and real-time systems with Go, Java, and PostgreSQL. I care about clean architecture, data integrity, and shipping software that is ready to run in production.

Experience

Chronology

From a computer systems degree to a Jotform internship and freelance backend work.

  1. 20212021 — 2025

    B.Sc. Computer Technologies and Information Systems

    Mehmet Akif Ersoy University, Burdur

    Completed a bachelor’s degree with a 3.47/4.00 GPA. Built a foundation in programming, relational databases, and software engineering, then specialized in backend systems with Go and Java.

    • Java
    • SQL
    • OOP
    • Databases
  2. 2025Feb 2025 — May 2025

    UI Developer Intern

    Jotform

    As part of a 4-person intern team, converted analytics dashboard designs into working UI with HTML5, CSS3, and React, and shipped an additional landing page. Collaborated in Agile sprints, joined code reviews, and practiced responsive, component-based frontend work.

    • React
    • HTML5
    • CSS3
    • Agile
  3. Now2025 — Present

    Freelance Backend Developer

    Independent

    Designing REST APIs and PostgreSQL schemas in Go, implementing JWT authentication, and packaging services with Docker. Building side projects in Spring Boot and Go — from ACID money transfers to concurrent RSS workers and WebSocket rooms.

    • Go
    • Java
    • PostgreSQL
    • Docker
    • JWT

Work

Selected projects

Backend systems I have designed and shipped — APIs, workers, and real-time services in Go and Java.

Toolbox

Tech stack

The languages, frameworks, and tools I use when building APIs, workers, and real-time backend systems.

Languages

  • Go
  • Java
  • SQL
  • JavaScript
  • Python

Backend & APIs

  • Spring Boot
  • Fiber
  • REST
  • WebSocket
  • JWT
  • sqlc

Data & Persistence

  • PostgreSQL
  • MySQL
  • Hibernate
  • Spring Data JPA
  • Goose

Tooling & Frontend

  • Docker
  • Git
  • JUnit 5
  • Mockito
  • React
  • HTML/CSS

Contact

Let’s work together

Open to junior backend roles. The fastest way to reach me is email or LinkedIn.