Gökhan Gürgeç

About

Over 20 years I have worked as a test engineer, developer, project manager and software architect, from tactical control systems and national statistics platforms to delivery, pricing and privacy products.

Java is my core language; I also work with Scala and Python. Most of my recent work is around Kafka, Kafka Streams, Akka Streams, Spark and Elasticsearch on Kubernetes.

These days I guide development teams, design software architectures and define development standards.

• 17 Oct 2026Laws of Software EngineeringTR

  Laws of Software Engineering #4 Tesler’s Law: Karmaşıklık Yok Olmaz, Yer Değiştirir

  Bir sistemi kullanıcı için basitleştirdiğimizde, karmaşıklık gerçekten ortadan mı kalkar? Yoksa yalnızca başka bir yere mi taşınır?

• 15 Oct 2026Laws of Software EngineeringTR

  Laws of Software Engineering #3 Law of Leaky Abstractions: Soyutlamalar Her Şeyi Gizleyemez

  Yeterince karmaşık olan tüm soyutlamalar bir noktada alttaki sistemin ayrıntılarını açığa çıkarır.

• 14 Oct 2026Laws of Software EngineeringTR

  Laws of Software Engineering #2 Hyrum’s Law: API’nizin Dokümante Edilmemiş Sözleşmeleri

  API’nizdeki küçük bir değişiklik, dokümantasyona göre doğru olsa bile neden başka bir sistemi bozabilir?

• 13 Oct 2026Laws of Software EngineeringTR

  Laws of Software Engineering #1 Gall’s Law: Karmaşık Sistemler Neden Basit Başlamalı?

  Laws of Software Engineering kanunlarından bir seriye başlıyoruz. İlk bölüm Mimari kategorisindeki Gall’s Law.

• 9 Jun 2024EN

  Why Should You Use the Bulk API to Import Big Data to Elasticsearch

  This story is about importing big data to Elasticsearch.

• 3 Nov 2022Kafka StreamsEN

  Kafka Streams with Serverless Kafka

  Splitting notifications according to their types.

• 2 Aug 2022Kafka StreamsEN

  Kafka Streams State Store at Scale

  Managing Interactive Queries on multiple application instances: alternative solutions and their comparisons.

• 15 May 2021EN

  Making SonarQube Analysis of Multiple Git Branches in Community Edition in Docker Container

  Running branch analysis with SonarQube Community Edition inside Docker.

• 28 Feb 2021Kafka StreamsEN

  Using Apache Kafka like Database with KafkaStreams Processor API and StateStore

  A Kafka Streams application with the Processor API, querying processed data via state stores with Spring Boot.

• 15 Oct 2019Apache SparkEN

  Apache Spark in Practice

  Practical usage of Apache Spark.

• 6 Aug 2019EN

  Streaming Data with Apache Kafka and Akka Streams

  Streaming data with Akka Streams connected to Apache Kafka through the Alpakka Kafka connector.

• 18 Jul 2019Apache SparkEN

  Apache Spark at a Glance

  A general presentation of Apache Spark for development teams, turned into a blog post.

• 17 Jul 2019EN

  Scrum at a Glance

  A presentation about Scrum turned into a story, covering its general aspects.

Skills

Languages

JavaScalaPythonTypeScriptSQL

Streaming & Data

Apache KafkaKafka StreamsAkka StreamsApache SparkElasticsearchPostgreSQLCassandraRedis

Frameworks

Spring BootAkkaLagomDjangoReactVue

Platform

DockerKubernetesHelmArgoCDAWSGrafana

Practices

Software ArchitectureDDDCQRS & Event SourcingTDDScrumMentoring