Freelancers using PostgreSQL in BengaluruFreelancers using PostgreSQL in Bengaluru
ProjectsPeople
Himanshu Kumar's avatar
Himanshu Kumar
proBengaluru, India
Helping founders turn Replit MVPs into secure, scalable SaaS
13x
Hired
5.0
Rating
45
Followers
REPLIT_EXPERT

Expert

Helping founders turn Replit MVPs into secure, scalable SaaS
Cover image for Secure Auth & Multi-Tenant System for Industrial SaaS
Secure Auth & Multi-Tenant System for Industrial SaaS
0
19
Cover image for BuildWise Construction Project Management
BuildWise Construction Project Management
3
4
Cover image for Automated Real-time Booking System Development
Automated Real-time Booking System Development
0
8
Cover image for Workflow Automation for Industrial Services
Workflow Automation for Industrial Services
2
43
PostgreSQL(1)
Prabhat Kumar's avatar
Prabhat Kumar
Bengaluru, India
Java Engineer Building AI Automations & Integrations
New to Contra
Java Engineer Building AI Automations & Integrations
Cover image for AI Document Intelligence & Invoice
AI Document Intelligence & Invoice Processing Platform Description Built an AI-powered document intelligence platform designed to automate invoice processing, document classification, data extraction, and approval workflows. The system uses AI, OCR, and workflow automation to process business documents automatically, eliminating manual data entry and reducing processing delays across finance and operations teams. By integrating with existing databases and business systems, the platform transforms unstructured documents into actionable business data. Key Features • AI-powered document analysis • Invoice data extraction • OCR-based document processing • Automated approval workflows • Purchase order matching • Vendor management integration • Document classification • Data validation system • Real-time processing dashboard • Automated reporting and audit trails Business Impact ✓ Reduced manual data entry ✓ Faster invoice processing ✓ Reduced processing errors ✓ Improved financial visibility ✓ Faster approval cycles ✓ Reduced operational costs ✓ Increased productivity across teams Technology Stack • Java • Spring Boot • PostgreSQL • OpenAI API • OCR Processing • REST APIs • Workflow Automation • Analytics Dashboard Results • Automated document processing workflows • Reduced invoice processing time by approximately 75% • Improved data accuracy • Reduced manual administrative effort • Accelerated approval and payment cycles This solution demonstrates how AI-powered document intelligence can automate finance and operational processes while improving accuracy, compliance, and efficiency.
0
63
Cover image for AI Customer Support Assistant Built an
AI Customer Support Assistant Built an AI-powered customer support platform designed to automate customer interactions, reduce support workload, and provide instant assistance using company documentation and knowledge base content. The system leverages OpenAI, enterprise knowledge bases, and backend automation to deliver accurate, context-aware responses while seamlessly escalating complex issues to human agents when needed. Key Features: • OpenAI-powered conversational assistant • Knowledge base search and retrieval • FAQ automation system • Context-aware customer responses • Human escalation workflow • Multi-channel support integration • Customer interaction analytics • Real-time response monitoring • REST API architecture • Enterprise-grade backend services Business Impact: ✓ Reduced repetitive support workload ✓ Faster customer response times ✓ 24/7 automated customer assistance ✓ Improved customer satisfaction ✓ Consistent support experiences ✓ Lower operational costs ✓ Increased support team efficiency Technology Stack: • Java • Spring Boot • PostgreSQL • OpenAI API • REST APIs • Docker • Maven • Knowledge Base Integration Results: • Automated approximately 80% of common support requests • Reduced average response time from hours to seconds • Reduced manual support workload by approximately 60% • Improved scalability without increasing support staff This solution demonstrates how AI-powered customer support systems can improve customer experience while significantly reducing operational overhead.
0
74
Cover image for AI Business Operations Automation Suite Built
AI Business Operations Automation Suite Built a centralized AI-powered automation platform designed to streamline internal business operations and eliminate repetitive manual work. The system automates workflows across departments including operations, finance, customer support, reporting, and administration. By integrating AI, APIs, databases, and business tools, the platform significantly reduces operational overhead while improving efficiency and accuracy. Key Features: • Automated invoice processing • AI-powered document analysis • Internal workflow automation • Approval and task management system • Automated report generation • Email and notification automation • CRM and database integration • Real-time analytics dashboard • Role-based access control • Custom business process automation Business Impact: ✓ Reduced manual operational workload ✓ Faster processing of business tasks ✓ Improved team productivity ✓ Reduced human errors ✓ Centralized operational visibility ✓ Scalable automation infrastructure Technology Stack: • Java • Spring Boot • PostgreSQL • OpenAI API • REST APIs • Workflow Automation • Dashboard Analytics This solution demonstrates how AI and automation can transform traditional business operations into efficient, scalable, and data-driven workflows.
0
64
Cover image for Built a collection of AI-powered
Built a collection of AI-powered business automation systems focused on solving real operational problems. Projects included: 🚀 AI Customer Support Assistant An OpenAI-powered support system that answers customer questions using company documentation, FAQs, and knowledge bases while reducing repetitive support workload. 🚀 AI Lead Enrichment & CRM Automation Automated lead qualification, enrichment, CRM synchronization, and outreach workflows to improve sales efficiency and conversion rates. 🚀 AI Business Operations Automation Suite Centralized automation platform for internal operations, reporting, document processing, notifications, approvals, and workflow management. 🚀 AI Document Processing & Workflow Automation AI-powered document extraction, classification, validation, and routing system designed to eliminate manual data entry and processing bottlenecks. Tools & Technologies: • OpenAI • AI Automation • Workflow Automation • Java • Spring Boot • PostgreSQL • REST APIs • CRM Integrations My goal is to build AI systems that automate repetitive business processes, reduce operational costs, and help teams scale more efficiently.
0
71
PostgreSQL(3)
Snehalatha Reddy Abbavaram's avatar
Snehalatha Reddy Abbavaram
Bengaluru, India
Backend Engineer |Node.js & NestJS Developer
New to Contra
Backend Engineer |Node.js & NestJS Developer
Cover image for Designed and implemented cloud-ready backend
Designed and implemented cloud-ready backend microservices using modern architecture principles to improve scalability, maintainability, and deployment efficiency. Developed independent services communicating through REST APIs while integrating databases, caching, and containerization technologies. Key Contributions Developed modular backend services. Built REST APIs for service communication. Containerized applications using Docker. Integrated Redis caching. Connected PostgreSQL and MongoDB databases. Improved scalability and maintainability of backend services. Technologies NestJS • Node.js • Docker • PostgreSQL • MongoDB • Redis • REST APIs • Microservices
0
28
Cover image for Designed and developed secure, scalable
Designed and developed secure, scalable RESTful APIs for enterprise applications following industry best practices for authentication, authorization, validation, and error handling. Focused on building reliable backend services capable of handling high-volume requests while maintaining performance and security. Key Contributions Designed RESTful APIs. Implemented JWT Authentication. Built Role-Based Access Control (RBAC). Added input validation and centralized error handling. Optimized API performance. Conducted API testing and documentation. Technologies Node.js • Express.js • JavaScript • JWT • RBAC • PostgreSQL • REST APIs • Postman
0
27
Cover image for Developed backend microservices for an
Developed backend microservices for an EV charging management platform supporting charging stations, customer subscriptions, and operational workflows. Built scalable services using NestJS, integrated relational and NoSQL databases, and designed REST APIs for seamless communication between distributed services. Key Contributions Developed scalable backend microservices using NestJS. Designed REST APIs for charging station management. Integrated PostgreSQL and MongoDB. Implemented authentication and authorization. Optimized backend performance and API response times. Technologies NestJS • Node.js • TypeScript • PostgreSQL • MongoDB • Docker • REST APIs • Git
0
29
Cover image for Developed scalable backend services for
Developed scalable backend services for an enterprise digital pricing platform used to manage products, pricing, promotions, and customer accounts. Designed and implemented secure REST APIs using Node.js and Express.js, integrated PostgreSQL for data management, and optimized performance using Redis caching. Collaborated with cross-functional teams in an Agile environment to deliver reliable and high-performance backend solutions. Key Contributions Developed scalable REST APIs using Node.js and Express.js. Designed and optimized PostgreSQL database queries. Implemented Redis caching to improve API performance. Built secure authentication and role-based authorization. Tested APIs using Postman. Technologies Node.js • Express.js • JavaScript • PostgreSQL • Redis • REST APIs • JWT Authentication • Git • Postman
0
27
PostgreSQL(4)
Subhradip Roy's avatar
Subhradip Roy
proBengaluru, India
AI Developer | Full-Stack Web Apps | AI Agents & Automations
$5k+
Earned
4x
Hired
5.0
Rating
101
Followers
BASE44_EXPERT

Expert

AI Developer | Full-Stack Web Apps | AI Agents & Automations
Cover image for ClearBook - AI SaaS Development | For Enterprise Data Management
ClearBook - AI SaaS Development | For Enterprise Data Management
2
34
Cover image for Rebuilding an Animal Shelter's Entire Digital Operation
Rebuilding an Animal Shelter's Entire Digital Operation
3
31
Cover image for AI Design Engine for Rumor - Forbes Featured Event OS
AI Design Engine for Rumor - Forbes Featured Event OS
3
38
Cover image for Backend Rebuild - 40% of the Logic Was Undocumented
Backend Rebuild - 40% of the Logic Was Undocumented
3
26
PostgreSQL(1)
Rongali Chaitanya's avatar
Rongali Chaitanya
proBengaluru, India
Full-stack developer & product designer | AI workflows
17
Followers
Full-stack developer & product designer | AI workflows
Cover image for Seatloom: Creative Workshop Booking & Waitlists
Seatloom: Creative Workshop Booking & Waitlists
0
6
Cover image for SignalRoom: Evidence-First Customer Intelligence
SignalRoom: Evidence-First Customer Intelligence
0
9
Cover image for Dayrate | Creator Partnership Studio
Dayrate | Creator Partnership Studio
0
5
Cover image for FrameProof: Visual Feedback and Version Approval
FrameProof: Visual Feedback and Version Approval
0
7
PostgreSQL(1)
Gajendra Jena's avatar
Gajendra Jena
proBengaluru, India
Fullstack Web Developer, Ruby on Rails, ReactJS
Fullstack Web Developer, Ruby on Rails, ReactJS
Cover image for RG-Admin
RG-Admin
0
38
Cover image for Onlife Health
Onlife Health
0
41
Cover image for ReferralGPS
ReferralGPS
0
5
Cover image for Content Harmony
Content Harmony
1
5
PostgreSQL(3)
Sriharsan BS's avatar
Sriharsan BS
Bengaluru, India
Production ML that turns messy data into decisions!!
New to Contra
Production ML that turns messy data into decisions!!
Cover image for AETHER-Glyca is a full-stack AI-powered
AETHER-Glyca is a full-stack AI-powered diabetes management platform built specifically for Indian patients, 100+ Pan-India foods with validated GI values, personalized XGBoost Metabolic Digital Twin, offline Ollama Mistral AI advisor, autonomous 6-agent clinical triage for 10,000 patients, food photo scanner with 91% accuracy, and voice input in 15 Indian and international languages. Pilot result: 34% reduction in post-prandial glucose spikes, 78% improvement in Time-in-Range across 40 households in Coimbatore over 6 weeks.
0
53
Cover image for Day one on Contra. New
Day one on Contra. New to the platform, not to the work. I build production ML systems that turn messy data into decisions, and I build the product around them. Where I am strongest: Production ML: risk scoring, prediction, ranking, computer vision Data engineering: pipelines that turn raw, scattered data into reliable features LLM apps: RAG, structured prompting, and evaluation that keeps them honest And I built the full product around it, too: FastAPI and backend services, React and Next.js frontends, dashboards, mobile, and workflow automation when a project needs it. I like owning the whole path from data to a working thing people use. Most builders stop at the demo. I take it to be deployed, monitored, and actually earning its keep. I also provide automation services for your Saas that you don't wanna waste your hours on. Starting today, I am open to work. Independent contracts, remote, a full build, or one piece of one. Startups and small teams turning an idea into a real product are exactly who I want to work with. My projects are on my profile if you want to see how I think before we talk. A piece of my playground work done within hours is posted too. #MachineLearning #AIEngineer #LLM #FastAPI #React #Nextjs #Contra
1
51
Cover image for NeuroVision AI is a clinical-grade
NeuroVision AI is a clinical-grade platform that detects neurological gait disorders from walking videos using computer vision and AI. It extracts key biomechanical parameters - cadence, symmetry, tremor index, and freezing episodes, via MediaPipe pose estimation and Isolation Forest anomaly detection, trained on established datasets including DaphNet and PhysioNet GaitPDB. The system delivers AI-powered differential diagnoses, real-time clinical Q&A, and spoken voice reports, all within 60 seconds of video input.
0
55
Cover image for TechnovaHub chatbot is a branded
TechnovaHub chatbot is a branded AI-powered customer assistant built with React and Node.js, featuring real-time streaming responses via Google Gemini API. It supports bilingual interaction (English and Tamil), voice input, lead capture, and smart intent detection for courses and pricing. The chatbot includes a secure backend proxy, XSS sanitization, and a modular architecture with 57 automated tests ensuring production-grade reliability.
1
76
PostgreSQL(1)