Mehmet Ali Gozaydin, Developer in Berlin, Germany
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Mehmet Ali Gozaydin

Verified Expert  in Engineering

Software Developer

Berlin, Germany
Toptal Member Since
June 26, 2019

Mehmet has close to a decade of experience as a software developer. During that time, he's had the chance to work with global companies thanks to his four years of experience at VNGRS, a tech company that helps startups improve their code and development qualities. He's well-versed in designing, developing, and maintaining high-traffic applications that require scalability, availability, and consistency.


Delivery Hero
Amazon Simple Notification Service (Amazon SNS)...
Amazon Web Services (AWS), Elasticsearch, PostgreSQL, Play Framework, Akka...
Amazon Web Services (AWS), Elasticsearch, MongoDB, Play Framework, Akka, Scala




Preferred Environment

Sublime Text, Git, IntelliJ IDEA, Linux, MacOS

The most amazing...

...thing I've created was Vole, a social network specialized in sports that grew to have 100,000 monthly actives up to 10,000 concurrent users in under a year.

Work Experience

Senior Software Developer

2020 - PRESENT
Delivery Hero
  • Maintained and upgraded a routing system that works under high traffic worldwide.
Technologies: Amazon Simple Notification Service (Amazon SNS), Amazon Simple Queue Service (SQS), Kubernetes, DYNAMO, PostgreSQL, Akka, Scala

Software Developer

2018 - 2020
  • Worked with a startup located in Dubai named "Beam Payment" for a complete handover of the company.
  • Migrated Beam's all data and AWS infrastructure as well as all the knowledge about the application.
  • Improved Beam's development cycles by adding CI and Automated tests.
  • Introduced Agile Methodology to Beam team and helped them to work with Scrum.
  • Helped Beam to build a new tech team and developed new features by working closely with them.
Technologies: Amazon Web Services (AWS), Elasticsearch, PostgreSQL, Play Framework, Akka, Java, Scala

Software Developer

2017 - 2018
  • Designed and developed VOLE(volley), a vertical social media startup. You can think of it like specialized (Instagram/Twitter) for sports fans.
  • Developed a product called MVSN, which you can use to create a new vertical social platform easily.
  • Used MVSN for creating a platform for housewives named PUDRA(powder).
  • Handled relatively good traffic for a 1-year startup (100,000 monthly active users, 500 concurrent average, 10,000 peak on weekends).
  • Managed development, deployment, and monitoring of the app.
Technologies: Amazon Web Services (AWS), Elasticsearch, MongoDB, Play Framework, Akka, Scala

Software Developer, Team Lead

2016 - 2017
  • Managed and improved an algorithm for unifying hotel information for ~600,000 hotels, incoming from >40 different providers.
  • Provided unified and properly formatted hotel data to other internal teams and external consumer companies.
  • Handled internal communication with other team leads and partner companies(both consumer and provider).
  • Monitored and fine-tuned mismatches and potential issues within the data.
  • Led a team of 6 developers.
Technologies: Amazon Web Services (AWS), PostgreSQL, Django, Python

Software Developer, Team Lead

2013 - 2016
  • Worked within several teams for startups located all around the world.
  • Contributed to open source tools such as Scala, Sublime Text and Play Framework.
  • Spoke at public conferences, wrote blog posts helped developing an open source tool.
  • Used Agile technologies within all projects and helped startups to improve their development lifecycles.
  • Led a team of 5 for a company called YellowPepper. The team developed a loyalty application for, a startup located in New York. Team also developed a service for mobile banking application for Banco Pichincha, a major bank on Ecuador.
  • Worked on a team for Leaf, a mobile payment startup located in Boston.
  • Worked on a team for Ardic Technologies, An associate of Intel who expertise on secure mobile device management. The team developed a SaaS platform for small businesses such as restaurant to manage their tablets.
  • Worked on a team for Yoyo, a local hourly car rental service. The team reimplemented their service for car communication and command management for operations such as locking, starting/stopping and tracking the car. It was a load intensive operation since there were >2,000 cars and a single car was sending >10 requests per second.
Technologies: Amazon Web Services (AWS), Spark, Amazon Kinesis, Amazon DynamoDB, Microsoft SQL Server, Spring, Akka, Play Framework, MongoDB, MySQL, PostgreSQL, Android, Java, Scala

Intern, Junior Developer

2011 - 2013
  • Started as an intern. Continued as part-time after the internship. Moved on as full time later on.
  • Worked on a project called A forum/portal for keeping a record of books, writers, publishers, academic publications, citations, etc.
  • Worked with Scala and Lightbend(Typesafe) ecosystem. Followed Martin Odersky's "Functional Programming Principles in Scala" lesson on Coursera.
  • Worked with Front End technologies such as JavaScript, HTML, CSS, and AngularJS.
  • Worked with Agile Methodologies, VCS, and other development tools and techniques.
Technologies: AngularJS, JavaScript, CSS, HTML, PostgreSQL, MongoDB, Play Framework, Java, Scala

Beam UAE

A mobile payment service located in Dubai.
A social network specialized for sports fans.
A price comparison website located in Turkey.

A cloud based enterprise-grade mobile device management platform.
A forum/portal for keeping a record of books, writers, publishers, academic publications, citations, etc.
2008 - 2019

Bachelor's Degree in Computer Engineering

Black Sea Technical University - Trabzon, Turkey




Git, Sublime Text, SBT, Gatling, GitHub, Bitbucket, IntelliJ IDEA, Amazon Simple Queue Service (SQS), Amazon Simple Notification Service (Amazon SNS), Eclipse IDE, Jenkins, AWS IAM


Akka, Play Framework, Spring, AngularJS, JUnit, Django, Flask, Spark


Agile Software Development, Functional Programming, Object-oriented Programming (OOP)


Scala, Python, Java, SQL, HTML, DYNAMO, JavaScript, Bash, CSS


AWS Elastic Beanstalk, Linux, AWS Lambda, MacOS, Android, Kubernetes, Amazon Web Services (AWS), New Relic


JSON, MySQL, MongoDB, PostgreSQL, NoSQL, Microsoft SQL Server, Elasticsearch, Redshift, Amazon DynamoDB, Amazon S3 (AWS S3), Redis, Datadog


Amazon Kinesis, Unix Shell Scripting, OAuth, PCI Compliance, log4j

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