I will build your full stack web app

V
vikasswami209
V
vikasswami209
Vikas Swami
5.0
5.0
build your full stack web app
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build your full stack web app
Full Screen
build your full stack web appbuild your full stack web app

About this gig

I don't just build web apps, I run one. ConvoSync is a B2B SaaS platform I built and actively maintain, handling WhatsApp + Instagram messaging for businesses. That means I understand production concerns that most freelancers skip: error handling, background jobs, rate limiting, and performance.

My stack: Frontend: React + TypeScript + Tailwind CSS Backend: Node.js/Fastify (or Express) Database: PostgreSQL + Prisma ORM Auth: JWT, OAuth (Google/Facebook) Deployment: ready for Vercel, Railway, or your own VPS

What I built:

SaaS platforms and dashboards,

REST APIs and backend services,

Admin panels and CMS,

Third-party integrations (payments, APIs, webhooks)

Tell me what you need, and I'll scope it honestly before you order.

  • Programming language

    • JavaScript

  • Expertise

    • Performance
    • Security
    • Operating systems
    • Design
    • Databases

  • Frontend framework

    • AngularJS
    • Bootstrap
    • React.js
    • Tailwind CSS
    • Vue.js

  • Backend framework

    • Django
    • Express.js
    • Flask
    • Laravel
    • Node.js

Get to know Vikas Swami

Vikas Swami

AI Agent SaaS Developer WhatsApp API React Nodejs

5.0(44)
  • FromIndia
  • Member sinceDec 2017
  • Avg. response time1 hour
  • Last delivery1 year

  • Languages

    Hindi, English
Full-stack developer specializing in AI agents, WhatsApp Business API, and SaaS development. I've shipped two production SaaS products from scratch — ConvoSync (omnichannel WhatsApp + Instagram messaging platform) and DaSalon (salon booking app on iOS & Android). What I build: → Custom AI Agents (GPT-4, Claude API) → WhatsApp Business API integrations → SaaS MVPs (React + Node.js + PostgreSQL) → OAuth / Social Login (Google, Facebook, Instagram) → Flutter mobile apps Message me before ordering — I'll be upfront about what's realistic for your project.

My Portfolio

Other Software Development Services I Offer

Reviews

15 reviews for this Gig
5.0

(15)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Recommend to a friend
    5
  • Service as described
    5
Sort By
Most relevant
  • P

    pollenb

    Repeat Client

    SG

    Singapore

    5

    It was wonderful working with Vikas. He seamlessly delivered the project without much hiccups or interruptions. Really appreciate the way he put in effort to understand the requirements and worked out the delivery approach. Highly recommended.

    Up to $50

    Price

    3 days

    Duration

    Helpful?
    Yes
    No
  • S

    shibinsundar413

    Repeat Client

    IN

    India

    5

    This is the third time I have contacted this team, delivering exceptionally as always. They helped identify a system error causing a production issue and were open to fixing an issue not mentioned in the initial agreement. I would definitely contact them in the future.

    Up to $50

    Price

    2 weeks

    Duration

    Helpful?
    Yes
    No
  • P

    piyush4565

    Repeat Client

    IN

    India

    5

    Vkas is an excellent professional, always very attentive, always seeks to improve his knowledge and works in a humanized way, and is always willing to deliver the best work. I will certainly hire him for new projects. This guy keeps surprising me. Resilient service. As a business owner, I have often...

    $50-$100

    Price

    3 days

    Duration

    Helpful?
    Yes
    No
  • Y

    youngtaekim

    KR

    South Korea

    5

    good product!

    $1,000-$1,500

    Price

    6 weeks

    Duration

    Helpful?
    Yes
    No
  • S

    shibinsundar413

    Repeat Client

    IN

    India

    5

    Great work.. Would definitely work with Vikas in future.

    $100-$200

    Price

    13 days

    Duration

    Helpful?
    Yes
    No
Reviews

15 reviews for this Gig
5.0

(15)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Recommend to a friend
    5
  • Service as described
    5
Sort By
Most relevant
  • P

    pollenb

    Repeat Client

    SG

    Singapore

    5

    It was wonderful working with Vikas. He seamlessly delivered the project without much hiccups or interruptions. Really appreciate the way he put in effort to understand the requirements and worked out the delivery approach. Highly recommended.

    Up to $50

    Price

    3 days

    Duration

    Helpful?
    Yes
    No
  • S

    shibinsundar413

    Repeat Client

    IN

    India

    5

    This is the third time I have contacted this team, delivering exceptionally as always. They helped identify a system error causing a production issue and were open to fixing an issue not mentioned in the initial agreement. I would definitely contact them in the future.

    Up to $50

    Price

    2 weeks

    Duration

    Helpful?
    Yes
    No
  • P

    piyush4565

    Repeat Client

    IN

    India

    5

    Vkas is an excellent professional, always very attentive, always seeks to improve his knowledge and works in a humanized way, and is always willing to deliver the best work. I will certainly hire him for new projects. This guy keeps surprising me. Resilient service. As a business owner, I have often...

    $50-$100

    Price

    3 days

    Duration

    Helpful?
    Yes
    No
  • Y

    youngtaekim

    KR

    South Korea

    5

    good product!

    $1,000-$1,500

    Price

    6 weeks

    Duration

    Helpful?
    Yes
    No
  • S

    shibinsundar413

    Repeat Client

    IN

    India

    5

    Great work.. Would definitely work with Vikas in future.

    $100-$200

    Price

    13 days

    Duration

    Helpful?
    Yes
    No

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