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Karthik KumarKK

Karthik Kumar

Lead Full-Stack Developer

€112/day
Bengaluru, IN
8-15 years

Average response time: 1 hour

About Karthik

I am a senior backend engineer and technical lead with 7+ years of experience delivering scalable, secure, and high-performance web applications for startups and growing companies. I specialize in PHP (Laravel, Symfony), Node.js, REST APIs, PostgreSQL/MySQL, and Docker-based deployments. I help businesses modernize legacy systems, build SaaS platforms, optimize backend performance, and ensure clean, maintainable architecture. Comfortable working with EU clients, remote teams, and long-term engagements, I focus on reliability, clear communication, and on-time delivery.
  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Digital Future of Education
    Lead Full-Stack Developer
    June 2021 - Today (5 years)
    • • As a team lead of a 5-member team, we are working on the Fri Admin app and Web Client app.
    • • I contributed significantly to discussions on the flow, logic, and database architecture for both the Fri Admin and Web Client applications.
    • • Under my leadership, we successfully achieved PCI certification, passing several server-side and application side security checks.
    • • We implemented a microservices architecture (4 instances) for individual modules to improve performance, enhance security, and optimize the system.
    • • I have developed over 200+ REST APIs with proper documentation and contributed to Web Client 1.0, built on Angular.
    • • Analyzed systems flow, data usage, and work processes; investigated 100% of problem area
    Microservices Architecture MySQL Node.js AngularJS Angular
  • Erisn
    Php Developer
    October 2020 - May 2021 (7 months)
    • • Worked as a PHP developer on various frameworks, including WordPress and CodeIgniter, alongside frontend technologies like React.js for diverse client projects.
    • • Demonstrated strong expertise in site optimization, addressing security issues, and performing security checks.
    • • Managed client meetings, documented requirements, and ensured project deliverables aligned with client expectations.
    • • Designed and developed 4+ websites, handling both frontend and backend development.
    • • Supported team members in resolving technical issues and improving project workflows
  • AGE High Voltage Solution PVT. LTD
    Web-Php Developer
    November 2018 - October 2020 (1 year and 11 months)
    • • Sole developer managing 5-6 WordPress websites, responsible for both front-end and back-end maintenance.
    • • Created custom WordPress plugins and themes to meet specific business needs and improve site functionality.
    • • Led the migration and development of a Magento website, handling custom plugin development and theme modifications.
    • • Ensured website optimization and implemented security measures to enhance performance and protect against vulnerabilities.
    • • Delivered regular updates and maintenance, ensuring the smooth operation of all company websites

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Education

  • B.Sc
    B.Sc
  • SPECIALIST
    SPECIALIST

Skill set

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