k
koushiksarke

Koushik

@koushiksarke
4.9(35)

Level 1

Expert Software Engineer, Full Stack developer

Bangladesh
English, Bengali
About me
With 5+ years of experience in Java, Spring Boot, and Microservices, specializing in secure, scalable web applications. Skilled in Angular, ReactJS, and Next.js, delivering seamless frontend and backend solutions. I ensure clean code, optimized performance, and exceptional user experiences with robust authentication, efficient data management, high-performance messaging, and scalable storage. Let’s bring your project to life—contact me today!... Read more

Skills

k
koushiksarke
Koushik
$10/hour
Offline • 
Average response time: 1 hour

See my services

Bug Fixes
I will fix bugs in java, spring boot, maven and gradle
4.8(33)
API & Integrations
I will be your expert java spring boot developer for rest API and microservices
5.0(2)

Want to work on an hourly basis?

Tell Koushik what you need.

$10

/

hour

Portfolio

35 Reviews
4.9

(32)
(2)
(0)
(1)
(0)
Rating Breakdown
  • Seller communication level
    4.9
  • Quality of delivery
    4.9
  • Value of delivery
    4.9
1-5 out of 35 Reviews
Sort By
Most relevant
    W

    wafaewafoua

    Repeat Client

    GB

    United Kingdom

    4

    The collaboration was excellent, and he demonstrated great professionalism

    Up to $50

    Price

    4 days

    Duration

    gig

    Bug Fixes

    Helpful?
    Yes
    No
    A

    arpanvirk04

    CA

    Canada

    5

    Delivered exactly what I needed — a full Spring Boot Auth + Gateway setup with JWT, MongoDB, and role-based access. Clean code, professional communication, and everything worked perfectly. Highly recommended!

    $50-$100

    Price

    1 day

    Duration

    gig

    Bug Fixes

    Helpful?
    Yes
    No
    F

    fjed062

    PL

    Poland

    5

    Great experience! The seller quickly found and fixed the issue in my Spring Boot + Thymeleaf project. Clear communication, fast delivery, and professional approach. Highly recommended!

    Up to $50

    Price

    1 day

    Duration

    gig

    Bug Fixes

    Helpful?
    Yes
    No
    A

    alikhanvisram

    PT

    Portugal

    5

    Very responsive and knowledgeable, helped me diagnose the problem and offered solid next steps

    Up to $50

    Price

    1 day

    Duration

    gig

    Bug Fixes

    Helpful?
    Yes
    No
    W

    wafaewafoua

    Repeat Client

    GB

    United Kingdom

    5

    I had a great experience working with this freelancer. The final project was completely bug-free and worked exactly as expected. He is also provided clear and well-structured documentation, which made it very easy for me to understand and maintain the code. The delivery was right on time, even a little...

    Up to $50

    Price

    2 days

    Duration

    gig

    Bug Fixes

    Helpful?
    Yes
    No