Freelancers using Java in Ahmedabad

Freelancers using Java in AhmedabadFreelancers using Java in Ahmedabad

Projects People

Kalpesh Prajapati

Ahmedabad, India

Experienced Senior Software Development Engineer

New to Contra

Experienced Senior Software Development Engineer

Cover image for Baccarat — real-time multiplayer card

Baccarat — real-time multiplayer card game: An online Baccarat table where players bet, deal and settle in real time, together. Multiple players sit at the same table and watch the same round unfold at the same instant, so every client has to stay in sync to the card. A server-authoritative game loop runs the round — betting window, deal, third-card rule, settlement — and pushes state over WebSockets, which means no client can influence the outcome. The shoe is shuffled with a cryptographically secure RNG and every round is recorded, so any hand can be replayed and verified after the fact. **Built** - Player / Banker / Tie betting with per-round bet windows and limits - Real-time multiplayer tables synchronised over WebSockets - Server-authoritative game loop implementing full Baccarat drawing rules - Cryptographically secure RNG shuffle with a verifiable, replayable round log - Automatic settlement, payout and per-player hand history

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Cover image for A healthcare booking platform connecting

A healthcare booking platform connecting patients with the right doctor: Patients search by speciality, see genuinely live availability, and book a slot in a few taps. The hard part is concurrency: two patients tapping the same 10:30 slot at the same moment must not both get it. Slot locking and transactional booking make that safe, and reminders cut no-shows. Built - Doctor search and profiles with speciality and location filters - Real-time slot availability with race-safe booking and cancellation - Appointment lifecycle: book, reschedule, cancel, remind - Patient records with role-based access, so staff see only what they should

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Cover image for An e-commerce storefront for buying,

An e-commerce storefront for buying, gifting and redeeming digital gift cards. Customers pick a card and an amount, pay through a secure checkout, and the recipient gets the card by email within seconds. Behind it sits the part that actually matters: a balance ledger that stays correct under concurrent redemptions, idempotent payment handling so a retried request never double-charges, and a full audit trail of every issue and redemption. Built - Card catalogue, custom amounts and gift-to-a-friend flow - Payment gateway integration with idempotent, retry-safe order handling - Email delivery pipeline for instant card issuance - Balance, partial redemption and expiry logic backed by a transactional ledger

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Cover image for A central authorization service that

A central authorization service that decides who can do what — in real time: Instead of permission checks scattered through every service, one engine answers a single question: given this user, this action and this resource, ALLOW or DENY? Policies combine roles (RBAC) with attributes (ABAC) — department, ownership, region, time of day — so product teams change a policy instead of shipping code. Every decision is logged, which is what auditors actually ask for. Built - Role-based and attribute-based policy evaluation - Low-latency decision API with policy caching - Policy authoring and versioning, so changes are reviewable and reversible - Immutable audit log of every allow/deny decision

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Ahmedabad, India

Web Designer & Developer | SEO Specialist

1x: Hired

5.0: Rating

29: Followers

expert

Partner

Web Designer & Developer | SEO Specialist

Cover image for Air Support Tactical Security Website

Air Support Tactical Security Website Development Case Study Project Overview Air Support Tactical Security is a leading security technology company based in Trinidad & Tobago, specializing in GPS tracking, stolen vehicle recovery, tactical response, drone security, and fleet management solutions. The objective was to design and develop a fully custom website that reflects the company's professionalism, builds trust with potential clients, and simplifies the customer journey from discovering services to booking appointments. Unlike a template-based website, this project was developed as a fully custom solution on Wix, delivering a unique user experience tailored to the client's brand and operational requirements. Client Air Support Tactical Security Trinidad & Tobago Industry Security Technology • GPS Tracking • Vehicle Recovery • Fleet Management • Tactical Security Solutions My Role Full Stack Wix Developer & Website Designer Tools & Technologies Wix Velo by Wix Wix CMS Wix SEO Project Goals Design a premium website that establishes trust and credibility. Create a custom user experience tailored to the security industry. Showcase multiple security products and services. Increase service enquiries and appointment bookings. Improve website performance across all devices. Build a scalable platform capable of supporting future products, content, and business growth. What I Delivered Fully Custom Wix Website Designed and developed the entire website from the ground up using Wix without relying on pre-built templates. Every section was custom-built to match the company's branding and provide a modern, professional appearance. Custom User Experience Created a structured navigation system that allows visitors to easily explore: GPS Tracking Solutions Vehicle Recovery Services Fleet Management Tactical Security Products Support Services Company Information The website was designed to guide visitors naturally toward contacting the business or requesting a booking. Custom Functionality with Velo Implemented custom functionality using Velo by Wix to support dynamic content, user interactions, and business workflows that extend beyond standard Wix capabilities. Booking System Built a streamlined booking request experience allowing customers to submit service appointments directly through the website, reducing friction in the customer journey. Dynamic Content Management Configured Wix CMS to make it easy for the client to manage website content, publish updates, and maintain service information without requiring developer assistance. Blog Integration Developed a scalable blog structure that enables the company to publish educational articles, industry updates, and product information to support customer engagement and long-term SEO growth. SEO Optimization Implemented comprehensive Wix SEO including: SEO-friendly URLs Optimized page titles and meta descriptions Structured heading hierarchy Image optimization Mobile-first optimization Internal linking strategy Technical SEO best practices The website was built with search engine visibility in mind while maintaining excellent user experience. Responsive Development Optimized every page for desktop, tablet, and mobile devices to ensure a consistent browsing experience across all screen sizes. Performance Optimization Improved loading speed, image delivery, and overall website performance to provide a fast and reliable experience for visitors. Key Features Fully custom Wix website Custom UI/UX design Velo-powered functionality Wix CMS integration Service showcase pages Online booking request system Dynamic blog Contact forms Mobile responsive design Wix SEO optimization Performance optimization Scalable website architecture Business Impact The new website provides Air Support Tactical Security with a professional digital presence that reflects the quality of its security solutions and services. Customers can easily explore available services, request bookings, and access important information through a streamlined and user-friendly interface. The scalable Wix architecture allows the business to continue expanding its products, services, and content while maintaining a consistent brand experience and strong technical performance. Outcome The completed project demonstrates the flexibility of Wix as a fully custom development platform. By combining custom UI/UX design, Velo development, Wix CMS, and advanced SEO implementation, the website delivers a modern, high-performing digital experience that supports business growth, improves customer engagement, and positions Air Support Tactical Security as a trusted leader in the security technology industry.

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Cover image for 13.9K clicks. 461K impressions. Average

13.9K clicks. 461K impressions. Average Google position of 8.1. This is what consistent SEO work can look like over 12 months. The focus is on improving organic visibility, attracting relevant visitors, and helping websites gain traction in Google Search without relying entirely on paid ads. My SEO approach focuses on: Technical SEO and website audits On-page SEO and keyword optimisation Indexing, sitemap and robots.txt improvements Search performance tracking through Google Search Console Ongoing optimisation based on real search data Need help getting more organic traffic to your website? If your website is struggling to rank, getting impressions without enough clicks, or not bringing in consistent organic traffic, let's talk. Send me a message on Contra with your website URL, and I'll take a look at where your SEO can improve. #SEO #TechnicalSEO #OrganicTraffic #GoogleSearchConsole #DigitalMarketing

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Cover image for Wyatt's Edit Custom Fashion eCommerce Website

Wyatt's Edit Custom Fashion eCommerce Website

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Cover image for Parts360 Digital Presence Development

Parts360 Digital Presence Development

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Ahmedabad, India

Full Stack Developer | Custom Mobile & Web App

Full Stack Developer | Custom Mobile & Web App

Cover image for Porter Partner App

Porter Partner App

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Cover image for Portals Hardware

Portals Hardware

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Cover image for FreshEats

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Cover image for KayCoat

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Ahmedabad, India

Lead Fullstack Web and Mobile App Developer

Lead Fullstack Web and Mobile App Developer

Cover image for Full-Stack Web/Mobile app Developer with 11+ Years of Experience

Full-Stack Web/Mobile app Developer with 11+ Years of Experience

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Cover image for ChatGPT Based AI Business Consulting Platform

ChatGPT Based AI Business Consulting Platform

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Cover image for Mobile Application Development

Mobile Application Development

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Cover image for Website Development

Website Development

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Ahmedabad, India

Lead web and Mobile Application Developer

Expert

Lead web and Mobile Application Developer

Cover image for Mobile App Development

Mobile App Development

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Cover image for OpsCommand Fleet Operations Platform Development

OpsCommand Fleet Operations Platform Development

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Cover image for CivicHub: Unified Identity & Multi-Tenant

CivicHub: Unified Identity & Multi-Tenant Platform for a Regional Nonprofit Consortium Architecting CivicHub, a nonprofit community-and-business-services platform serving a mid-sized US metro region. The platform pairs an off-the-shelf community layer with a custom NestJS business layer, unifying member identity across both through a single sign-on so members log in once and move between community tools and industry-specific dashboards.

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Cover image for NearDeal: Real-Time Geofenced Deals Marketplace

NearDeal: Real-Time Geofenced Deals Marketplace for Local Retail Building NearDeal across four phases: a marketing site and web app with automated business identity verification, a real-time geofencing engine that alerts nearby consumers to live deals within 60 seconds, native iOS/Android apps, and a Claude-powered engine that emails businesses three data-grounded suggestions after every deal expires.

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Chirag Prajapati

Ahmedabad, India

Flutter & React Native Expert | 10+ Yrs Mobile Development

Flutter & React Native Expert | 10+ Yrs Mobile Development

Cover image for Power Sentry – Apps on Google Play

Power Sentry – Apps on Google Play

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Cover image for Airo: Investment Manager - Apps on Google Play

Airo: Investment Manager - Apps on Google Play

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Cover image for MyHooxy Smart Oximetry Solution

MyHooxy Smart Oximetry Solution

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Cover image for Payansh - Apps on Google Play

Payansh - Apps on Google Play

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Hittanshu Bhanderi

Ahmedabad, India

Data Analysis Expert

Data Analysis Expert

Cover image for Covid cases tracker

Covid cases tracker

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Cover image for Real-Time Face Recognition

Real-Time Face Recognition

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Cover image for Bank Loan Defaulter Prediction

Bank Loan Defaulter Prediction

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Ahmedabad, India

Android mobile and TV Developer

Android mobile and TV Developer

Cover image for PlayboxTV

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Cover image for Linkedcare

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Cover image for FOODORA

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Cover image for Hungama: Movies Music Podcasts

Hungama: Movies Music Podcasts

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