Akin O.

Senior Fullstack Developer

Akin is a Senior Fullstack Developer with over nine years of professional experience, specializing in building modern single-page applications (SPAs) and backend microservices. He works extensively with React.js, Vue.js, and Node.js, delivering scalable products for HR tech, SaaS, and internal tools.

At Proxify, he led major frontend migrations, improved performance metrics, and implemented developer tooling including SonarQube and Lighthouse CI. He has also designed microservices using AWS Lambda and Serverless, while enhancing code quality across multiple teams.

Known for writing clean, maintainable code and applying solid design principles, Akin aligns engineering efforts with business goals through clear communication, collaboration, and a focus on delivering high-quality software.

Main expertise

  • Vue.js
    Vue.js 8 years
  • React.js
    React.js 8 years
  • Next.js
    Next.js 4 years

Other skills

  • PostgreSQL
    PostgreSQL 3 years
  • MongoDB
    MongoDB 2 years
  • Express.js
    Express.js 2 years
Akin

Akin O.

Turkey

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Selected experience

Employment

  • Senior Software Engineer

    Proxify AB - 3 years 9 months

    Designed, built, and optimized internal tools used across the Proxify network, including the ATS, member platform, and third-party assessment integrations.

    • Boosted application form conversion rate from 39% to 65% within six months through frontend optimization and UX collaboration.
    • Led the Vite migration, improving ATS performance from 30% to 85%.
    • Introduced SonarQube company-wide, elevating code quality from D grades to consistent A grades.
    • Implemented Lighthouse CI and Datadog RUM for continuous performance and reliability monitoring.
    • Collaborated with PMs and designers to ensure long-term maintainability of the design system.
    • Advised on Mixpanel analytics and GrowthBook A/B testing, enhancing data-driven product decisions.
    • Received the Quality Award (2024) for engineering excellence.
    • Contributed to backend improvements in Laravel/PHP, including middleware logic and SQL optimization.

    Technologies:

    • Technologies:
    • PHP PHP
    • Laravel Laravel
    • MySQL MySQL
    • JavaScript JavaScript
    • React.js React.js
    • Vue.js Vue.js
    • TypeScript TypeScript
    • Node.js Node.js
    • Jenkins Jenkins
    • SQL SQL
    • AWS Lambda AWS Lambda
    • SCSS SCSS
    • DataDog DataDog
    • REST API REST API
    • SonarQube SonarQube
    • Mixpanel Mixpanel
    • Vite Vite

  • Frontend Engineer

    Teamble Technology - 1 year

    Teamble Technology develops employee engagement and performance management platforms for modern workplaces.

    • Built responsive single-page applications from scratch using Vue.js and React.js.
    • Developed a Microsoft Teams app for employee feedback integration.
    • Used D3.js to generate visual insights from HR and engagement data.
    • Ensured UI consistency through design system alignment and cross-browser testing.
    • Wrote automated tests with Jest, improving frontend reliability and test coverage.

    Technologies:

    • Technologies:
    • JavaScript JavaScript
    • React.js React.js
    • Vue.js Vue.js
    • Next.js Next.js
    • SCSS SCSS
    • Agile Agile
    • REST API REST API
    • Jest Jest
    • D3.js D3.js

  • Full-stack Engineer

    Various Clients (Freelance Projects) - 10 years 3 months

    Delivered web applications and RESTful microservices for startups and SMEs across Europe, focusing on rapid prototyping, performance, and scalability.

    • Created and deployed single-page applications (SPAs) from concept to launch.
    • Built REST APIs using Node.js and the Serverless Framework.
    • Integrated CI/CD pipelines and cloud infrastructure to automate deployments.
    • Consulted clients on frontend performance optimization and architecture decisions.
    • Designed and executed automated test suites using Cypress and Mocha.

    Technologies:

    • Technologies:
    • PHP PHP
    • Vue.js Vue.js
    • Node.js Node.js
    • Agile Agile
    • Git Git
    • Mocha.js Mocha.js
    • REST API REST API
    • Cypress Cypress
    • Serverless

  • Freelance full-stack developer

    Skeyl - 6 years

    Skeyl is a technology consultancy building scalable digital products and software solutions for international clients across finance, retail, and education.

    • Delivered full-stack web solutions across multiple client industries using modern JavaScript frameworks.
    • Built and deployed serverless microservices with AWS Lambda to support scalable backend functionality.
    • Refactored a legacy React application, improving performance scores from 44% to 96%.
    • Migrated and stabilized legacy systems based on Handlebars.js, introducing modern frontend architecture.
    • Developed APIs and backend services using Node.js, Express.js, and MySQL/PostgreSQL.
    • Reduced technical debt through systematic codebase refactoring and adherence to SOLID and DRY principles.
    • Communicated directly with clients to manage deliverables, technical expectations, and sprint outcomes.
    • Expanded expertise in Vue.js, Nuxt.js, and performance-driven SPA design.

    Technologies:

    • Technologies:
    • MySQL MySQL
    • React.js React.js
    • Vue.js Vue.js
    • PostgreSQL PostgreSQL
    • Node.js Node.js
    • Express.js Express.js
    • Microservices
    • Next.js Next.js
    • SCSS SCSS
    • Nuxt.js Nuxt.js
    • REST API REST API

Education

  • BSc.Metallurgical and Materials Engineering

    Karadeniz Technical University · 2009 - 2016

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