Yalın E.

Fullstack Developer

Yalin has 5+ years of commercial experience in development in IT, defense, telecommunication, warehousing industries, and GIS domains.

Yalin has helped different companies build robust software, resulting in an 80% performance increase in API.

He has worked on open-source engagements, built a map software engagement for the first Turkish native helicopter and UAV engagement, and created a monitoring tool for the internet service providers in Turkey. He has successfully applied TDD and clean code principles to solve complex industry problems. Yalin is proficient in the backend, frontend, modules integration, and Agile development.

He is most skilled in Java, using Spring for the backend with PostgreSQL, OracleDB, and other relational databases.

Main expertise
  • Java
    Java 5 years
  • Spring
    Spring 5 years
  • Spring Boot
    Spring Boot 5 years
Other skills
  • SQL
    SQL 5 years
  • PostgreSQL
    PostgreSQL 5 years
  • Oracle
    Oracle 5 years
Yalın Eren
Yalın E.


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Selected experience


  • Software Developer

    GeoSolutions SAS - 2 years 9 months

    GeoSolutions is specialized in the processing and dissemination of raster and vector geospatial data with Open Source software according to the standards created by the Open GeoSpatial Consortium (OGC) and the ISO Technical Committee 211, which provide the base building blocks for the INSPIRE regulations.

    • Participated in open-source geographic information system (GIS) projects of the company named GeoServer and GeoTools.
    • Developed and maintained the open-source projects according to the different clients’ needs by giving consultancy.
    • Added modular extensions according to clients' needs. Reproduced their errors and provided faster solutions.
    • Worked with CI/CD pipeline and implemented unit and integration tests for all new functionalities.
  • Software Developer

    Nokia - 1 year 8 months

    Nokia Corporation is a Finnish multinational telecommunications, information technology, and consumer electronics corporation, established in 1865.

    • Developed a web inventory tracking system for Turkey’s one of the biggest ISPs, which has more than 50 million users.
    • Improved system performance and refactored the code.
    • Making code more robust and dependency amongst modules is decreased
    • Increased the automation capabilities of the system and reduced six days of monthly job to 5 minutes.
    • Implemented new modules using Test Driven Development (TDD).
    • Wrote unit tests for older classes that have a critical part in the system.
  • Software Developer

    Ayesaş - 2 years 7 months

    AYESAŞ, as one of the leading solution providers within the Turkish Defence Industry, operates in Aerospace and Defense and has been providing advanced solutions in the business areas of C4ISR, Avionics, Electronic and Electromechanical systems.

    • Contributed to the Turkish government's first helicopter projects and first distributed architected UAV mission planning software.
    • Developed using Test Driven Development and reach at least 80% coverage in classes.
    • Developed microservices using gRPC, which enables bi-directional streaming between user and application while encrypting and gathering data in small packages.


    • Technologies:
    • Java Java
    • Spring Boot Spring Boot
    • gRPC gRPC
    • Microservices


  • Standalone courseProcessional Scrum Master

    Scrum.org · 2019 - 2019

  • MSc.MBA

    Hacettepe University · 2018 - 2020

  • BSc.Computer Science

    Bilkent University · 2012 - 2017

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