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Hi, my name is

Hayrettin MAVIS

I am a Senior Software Developer

Contact Me

Profile

A strict follower of technology and innovation in order to deliver business value that addresses today’s requirements.

14 years’ experience in software development in different industries that created a super generalist having the enthusiasm and ambition to complete projects to the highest standard.

My Skills

Programming Languages

Java 8+, Spring Boot, REST & SOAP services, Angular, TypeScript, Python

Tools & Methodologies

Microservices, TDD (Junit, Mockito), Apache Kafka, Docker, WebSphere, MQ, Weblogic, Linux (shell scripting), Bitbucket, CI/CD (Gitlab), Jira, Confluence.

Database

Most experience with Oracle & MySQL having good knowledge in PL/SQL. Getting used to Mongo DB & Couchbase in NoSQL area

Experience

Jan 2021 — 

Huawei Turkey R&D Centre

Istanbul/Turkey

Senior Software Developer

Intelligent Application Development

Transformed a dashboard service, which mostly includes hardcoded calculations, to run 100% automatically by integrating with source control, CI/CD and project management systems.

Currently developing backend services for SOAR (Security Orchestration, Automation, Response) platform, which automates responses to incidents defined in workflows.

Tech Stack

  • Python (Flask), Java 8, Spring Boot, Microservice architecture, Git, Gitlab
  • Apache Camunda BPM, Elasticsearch, Scrum, Jira, Confluence

Mar 2020 — Jan 2021

n11.com

Istanbul/Turkey

n11.com is an e-commerce marketplace platform in Turkey with 80M monthly visitors.

Senior Software Developer

Payment & Loyalty Group

Designed and implemented offline bank wire service, which fetches account transactions, processes these transactions and serves payment status and details to car sales platform. This allowed corporate customers to be able to use car selling platform since online processes had very few limits and very strict rules.

Added asynchronous capability to the payment processes by integrating with the separately developed payment service. This was a very big step for decomposing the monolith application.

Fixed hardcoded coupon sorting method to a dynamic, flexible and manageable one on campaigns page. This allowed marketing department to organize coupons and campaigns easily during major marketing periods like Black Friday.

Tech Stack

  • Spring Boot, Java 8, REST, Docker, OpenShift, Microservice architecture
  • Elastic search, OpenShift, JSF, JavaScript

Aug 2018 — Aug 2019

Turkish Airlines

Istanbul/Turkey

Turkish Airlines is a global brand among the top-ten airlines in the world

Senior Software Developer

Sales Solutions

Key player for designing, building, and maintaining of backend services and frontend components in the project of modernization of old, cumbersome legacy application to a modern microservices application.

Key responsibilities

  • Conceived and implemented refactoring the backend structure with Spring Boot.
  • Shaped frontend structure with UX designer and frontend developers.
  • Developed login, authorization and user management components for frontend and backend with Angular 7 and Spring Boot

Feb 2012 — Aug 2018

Turkish Airlines

Istanbul/Turkey

Turkish Airlines is a global brand among the top-ten airlines in the world

Senior Software Developer

Crew Solutions

Gained Java experience within support & integration projects. Participated in the department’s biggest project as a senior developer after promoted. Worked many years in the different phases of SDLC at the same time.

Key responsibilities

  • Investigated, designed and implemented customization layers for web & mobile applications that simplifies operations for crews.
  • Spearheaded a small team and made coordination with other teams and mentored a junior developer
  • Able to clearly communicate technical data to non-technical colleagues both written and verbal.
  • Enhanced performance and effectiveness of existing applications with modern methodologies.
  • Identified & addressed conflicts with solid implementations. Gained Linux & Python experiences.

Jun 2012 — Feb 2013

Turkiye Finans Bank

Istanbul/Turkey

 Turkiye Finance is one of the well-established participation banks since 2005.

Senior Software Developer

Finished important tasks in the short period of employment with the help the previous expertise.

Key responsibilities

  • Improved decision of approval procedure of retail credits.
  • Developed and integrated Digital Expertise service client to retail credits.
  • Maintained modules in retail credits part of the core banking project.

Jun 2008 — May 2012

Bank Asya

Istanbul/Turkey

2012   Bank Asya is the sixth private finance house in Turkey.

Software Developer

Key responsibilities

  • Played key role on design, analysis and development of integration between Direct Debit and Commercial Card System. Collaborated with a very big team flawlessly during the development process.
  • Decreased development time from 1 day to 1 hour by tuning the procedure of file parsing and importing in Direct Debit System.
  • Refactored Oracle Forms applications to modern looking .Net WinForms applications with high customer satisfaction.

EDUCATION

2002 — 2007

Selcuk University

Konya/Turkey

Computer Science

Specialised in application design and development, algorithms, object-oriented programming, computer architecture, operating systems, software architectures, relational databases, computer-aided logical design, microcontrollers, and programming.

CONTACT

Let's get in touch

If you’re interested in connecting in person or over the phone, I’d be delighted to discuss my experience in more detail.