Alptug Dilek, Software Developer in Ankara, Turkey
Alptug Dilek

Software Developer in Ankara, Turkey

Member since February 6, 2018
Alptug is an ambitious problem solver who believes that solid and close communication with the customer is the key to delivering exceptional software. He is a full-stack Java, Ember, and React developer. One of his recent career highlights was the design and development of a front-end framework on top of Ember.js to enable fast and high-quality application delivery by different software development teams.
Alptug is now available for hire

Portfolio

  • Tekmetric
    Amazon Web Services (AWS), Socket.IO, CSS, Hazelcast, AWS EC2...
  • Bayzat
    BEM, Agile Software Development, Twig, PHP, CSS, HTML5, React, Ember.js...
  • Robusta
    CSS, Spring, REST, PostgreSQL, Hibernate, Spring Boot, Antd, HTML5...

Experience

Location

Ankara, Turkey

Availability

Part-time

Preferred Environment

Jira, Slack, VS Code, IntelliJ IDEA, Git, MacOS

The most amazing...

...front-end infrastructure I've developed is used in the development of Turkey's National Accounting System, serving more than 10 million requests per day.

Employment

  • Senior Full-stack Developer

    2020 - PRESENT
    Tekmetric
    • Refactored existing React class components to functional components with hook API to improve readability, reuse, and maintainability of the front-end code base.
    • Performed front-end performance improvements on various parts of the project using React higher-order components and hooks.
    • Implemented missing back-end validation rules in various parts of the project to reduce bugs and misuse of the API.
    • Increased code performance on the back end in exporting various data to CSV files around 30%-50% via proper pagination and better memory management.
    • Implemented the back-end part of an essential feature of the application enabling 2-way SMS texting with customers from within the application via integration with a communications API provider.
    • Improved database query performance via proper index introduction and usage in various parts of the project.
    • Solved issues with Hazelcast caching solution to reduce database workload within the project.
    Technologies: Amazon Web Services (AWS), Socket.IO, CSS, Hazelcast, AWS EC2, AWS Push Notification Service (AWS SNS), Amazon SQS, AWS Lambda, MySQL, Amazon Aurora, Material-UI, Agile Software Development, Spring, REST, Spring Security, Hibernate, HTML5, React Redux, AWS, Spring Boot, Redux, Java, React
  • Front-end Developer

    2018 - 2020
    Bayzat
    • Developed payroll and time-off modules of the Bayzat Benefits platform, which helped the company deliver new features such as multiple payroll processing in the same month, better expense management, and accrual-based time-off management.
    • Involved in architectural discussions of the migration of the front-end codebase from Ember.js to React.
    • Assisted with the legacy code to separate the PHP codebase into the front end and back end and refactored many of the Twig templates.
    • Tracked and fixed bugs in different modules of the Bayzat Benefits platform.
    • Programmed with Ember.js, React, HTML 5, and SCSS to develop functional UI components that were pixel-perfect matches to the designers' sketches.
    • Developed a reusable infinite scroll pagination component used project-wide.
    Technologies: BEM, Agile Software Development, Twig, PHP, CSS, HTML5, React, Ember.js, JavaScript
  • Co-founder/Senior Full-stack Developer

    2018 - 2018
    Robusta
    • Involved in choosing technology stack to enable rapid development of the functionality.
    • Implemented front-end infrastructure code to enable rapid development of new CRUD screens.
    • Involved in REST API endpoint design and implemented all user stories of the project in the front end.
    Technologies: CSS, Spring, REST, PostgreSQL, Hibernate, Spring Boot, Antd, HTML5, JavaScript, React
  • Senior Full-stack Developer

    2015 - 2018
    Tubitak Bilgem YTE
    • Pioneered the architectural design of the National Accounting System to be developed for the Ministry of Finance and Treasury of Turkey and played a critical role in setting up the microservices architecture.
    • Designed and developed an infrastructural framework, including base UI components, form components, and validations on top of Ember.js to enable the development of three to four different front-end applications concurrently by different software development teams.
    • Mentored and supported junior software developers by giving them periodic courses in JavaScript and Ember.js.
    • Participated in the development of an open-source table component with Ember.js: https://github.com/tubitak-bilgem-yte/ember-contextual-table.
    • Programmed with Ember.js, HTML 5, CSS, and Bootstrap daily to deliver functional UI components to match complex financial workflow requirements.
    Technologies: Microservices Architecture, Agile Software Development, Apache Kafka, Hibernate, Spring, Java, HTML5, CSS, Ember.js, JavaScript
  • Software Development Team Lead

    2013 - 2015
    Tubitak Bilgem YTE
    • Led a software development team of five to deliver three different software modules.
    • Mentored and supported junior software developers via pair programming.
    • Designed and developed a highly customizable and dynamic survey form infrastructure as part of one of the modules delivered. It enabled the creation of new surveys and the modification of existing ones with ease.
    • Performed many database query optimizations and set up stored procedures to derive valuable information gathered through the system.
    • Designed a customizable wizard component that eases the development of wizards with Adobe Flex.
    Technologies: Oracle WebLogic Portal, Agile Software Development, Oracle, Hibernate, Adobe Flex, Java EE
  • Senior Full-stack Developer

    2011 - 2013
    Tubitak Bilgem YTE
    • Developed infrastructural components to be used by development teams to enable rapid and high-quality releases.
    • Enabled a multi-threaded web service querying external systems with Spring Batch. It sped up the overall execution time of the batch jobs by approximately five times.
    • Identified database-related bottlenecks and performed query optimizations targeted for Oracle.
    • Involved in the monitoring and maintenance of Oracle Weblogic servers.
    • Participated in the refactoring of legacy code to improve code maintenance and readability.
    Technologies: Oracle WebLogic Portal, Agile Software Development, Oracle WebLogic Application Server, Oracle, Java, Hibernate, Quartz, Spring Batch, Spring
  • Full-stack Developer

    2009 - 2011
    Tubitak Bilgem YTE
    • Aided in user requirements gathering sessions involving hundreds of people to derive software system requirements of the social assistance information system in Turkey.
    • Designed and developed a software module to enable conditional cash transfer to citizens in need as part of the social assistance system in Turkey.
    • Performed mission-critical business-to-business integrations with external systems using REST, SOAP, and FTP-based methods.
    Technologies: Oracle WebLogic Portal, Oracle, Hibernate, Adobe Flex, Java EE
  • Junior Software Developer

    2007 - 2008
    Tom Sawyer Software
    • Participated in the design and development of the layout animation and thread components of the TSV (Tom Sawyer Visualization) product.
    • Tracked and fixed bugs encountered in the TSV product.
    • Participated in the testing of the initial versions of the TSP product.
    Technologies: SWT, Java

Experience

  • Tekmetric (Development)
    https://tekmetric.com/

    Tekmetric is a cloud-based auto repair shop management software. I am working as a senior full-stack developer here at Tekmetric. I am expanding the application feature set and work as a stand-alone full-stack developer of some of the features such as employee time cards. Occassionally I collaborate with a colleague to develop either back-end or front-end portion of a feature such as 2-way SMS texting with customers.

    I also help improve performance bottlenecks such as rendering performance improvement on the front end via proper use of React higher-order components and hooks. I conduct database performance improvement on the database side via sound index creation and usage. Increase the back-end performance via better memory management and pagination.

    I use AWS services such as Lambda, SQS, and SNS to enable seamless business processes execution as part of my daily software development activities.

  • Bayzat Benefits (Development)
    https://www.bayzat.com/enterprise

    Bayzat Benefits is an HR software targeted to SME companies in the United Arab Emirates. I worked as a front-end developer for the payroll module within the Bayzat Benefits product. I participated in developing the time-off module and took part in the refactoring of legacy code written in PHP and various modern technologies. I was also involved in architectural work to change the codebase to React from Ember.js in the front end.

    Team Structure: Worked within a project involving around 30 engineers and 3-4 squads and developed in squads of around 6-8 developers (3-4 front end and 3-4 back end). Worked with a dedicated product manager, product designer, and QA engineer, and applied Agile methodologies.

    Technologies and Tools: Ember.js, React, JavaScript, Kotlin, Spring Boot, Nginx, Git, Jira, GitHub, Confluence, and CircleCI.

  • National Accounting System (Development)

    The new National Accounting System replaced a legacy system developed back in 2000 with new and opensource technologies for the Ministry of Finance and Treasury in Turkey. The project involved the management of budget, accounting, expenditure, and payment activities of the public sector in Turkey. The project was based on microservices architecture and involved more than ten microservices when I left the project. There were four different software development teams on the project. I was involved in the design and development of a front-end framework based on Ember.js. It was used by the development teams to deliver front-end applications.

    Team Structure: Worked within a project involving over 30 engineers and 4-5 squads. Worked in a squad called infrastructure squad, which had the role of architecting the project and enabling other squads to deliver high-quality products effectively. Applied Agile methodologies with Kanban.

    Technologies and Tools: Java, Spring Boot, Ember.js, JavaScript, HTML 5, CSS, Hibernate, Git, Bamboo, Jira, Confluence, Apache Kafka, Elasticsearch, Docker, PostgreSQL, and CAS.

  • PTT Messenger Admin Portal (Development)

    PTT Messenger is an enterprise messaging platform developed based on Signal (Open source, encrypted messaging library) targeted for the public sector in Turkey.

    I was involved in developing an administration portal for the management of user, company, and various configuration settings of PTT Messenger. I designed and developed the front-end side of this admin portal application myself with React by using the Ant Design UI Library.

    Team Structure: Solo performance on the front end. Single front-end and single back-end developer in the project.

    Technologies and Tools: React, HTML 5, CSS, JavaScript, Java, Spring Boot, Nginx, Git, Jira, and GitHub.

  • Integrated Social Assistance System (Development)

    Integrated the Social Assistance System is an eGovernment project in Turkey. It was targeted to the management of social assistance for the citizens of Turkey. This was realized through intake and registration, eligibility and enrollment decisions, determination and delivery of benefits, services needed, and the monitoring of the overall activities. I participated in all steps of the software development cycle throughout the whole project. I worked as a full-stack developer, infrastructure developer, and software team lead throughout the project.

    Team Structure: Worked within a project involving over 30 engineers and 4-5 squads. I took different roles within the project, as this was a long-term enterprise project. I worked in a squad called infrastructure squad, which had the role of architecting the project and enabling other squads to deliver high-quality products effectively. Worked as squad lead and applied Agile methodologies with Scrum.

    Technologies and Tools: Java EE, Adobe Flex, Hibernate, Oracle Database, Oracle WebLogic Server, SVN, Spring, Spring Batch, REST, and SOAP.

  • Tom Sawyer Visualization (Development)
    https://www.tomsawyer.com/products/visualization/

    Tom Sawyer Visualization is a product family consisting of desktop and web-based applications that enable users to perform data visualization capabilities on different platforms. My main contribution during the time I worked for Tom Sawyer was in the design and development of the layout animation and layout thread components of TSV.

    Technologies and Tools: Java, SVN, JUnit, and SWT.

Skills

  • Languages

    Java, SQL, JavaScript, HTML5, CSS, PHP, Kotlin, CSS3
  • Frameworks

    Ember.js, Hibernate, Spring, Adobe Flex, Spring Batch, Spring Boot, QUnit, Twig, Spring Security, Material-UI, CSSS, Flex, JUnit, Jest, Redux
  • Libraries/APIs

    React, REST APIs, Antd, SWT, Quartz, React Redux, Socket.IO
  • Tools

    Git, Jira, IDEA IDE, VS Code, GitHub, Atlassian Confluence, IntelliJ IDEA, Slack, Amazon SQS, AWS Push Notification Service (AWS SNS), Nginx, Subversion (SVN), AWS CloudWatch, AWS CloudTrail, AWS IAM, AWS EBS, AWS CodeDeploy, AWS CodeBuild, AWS CodeCommit, AWS ECS, AWS Fargate, Bamboo, Jenkins
  • Paradigms

    Agile Software Development, Unit Testing, Test-driven Development (TDD), REST, Microservices Architecture, BEM
  • Other

    User Requirements, Freelance Developer, Oracle WebLogic Application Server, AWS, WebLogic, SOAP, AWS API Gateway, AWS CodePipeline, Oracle WebLogic Portal
  • Platforms

    MacOS, Java EE, Apache Kafka, AWS Lambda, AWS EC2, Amazon Web Services (AWS), AWS STS, AWS Elastic Beanstalk, Oracle
  • Storage

    Amazon Aurora, Hazelcast, AWS S3, AWS DynamoDB, PostgreSQL, Oracle 10g, MongoDB, MySQL

Education

  • Master's degree in Computer Science
    2006 - 2009
    Bilkent University - Ankara, Turkey
  • Bachelor's degree in Computer Science
    2002 - 2006
    Bilkent University - Ankara, Turkey

Certifications

  • AWS Developer Associate
    MARCH 2021 - MARCH 2024
    Amazon Web Services
  • AWS Solutions Architect Associate
    DECEMBER 2020 - DECEMBER 2023
    Amazon Web Services
  • TOGAF 9
    MAY 2015 - PRESENT
    The Open Group
  • Sun Certified Java Programmer
    JANUARY 2010 - PRESENT
    Sun Microsystems

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