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Vijender Singh P.
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Vijender Singh P.

Lead Software Engineer | AI Agentic | Gen AI | Full-Stack AI Developer

I have helped wide-industry range like startups, healthcare providers, SaaS companies, and growing businesses design AI-powered platforms, automate operations, and build enterprise software that improves efficiency and supports long-term growth. Hi, I am Vijender Singh, a Lead Full-Stack Engineer with 13+ years building centralized business solutions. I am part of a small expert-lead team at TeQ Mavens and together we build end to end solutions like custom web, mobile, and SaaS products. Served the following domains - - CRM and ERP heavy operations - Workflow Automation - Process Driven Centralized Solutions - Healthcare , HIPAA, HL7, Medicare - Fitness & Wellness - Marketing and Sales Process Automation - Delivery and Logistics - Inventory led warehouses and Distribution - Automotive - Education - Recruitment & Staffing - Real Estate - Finance - AI & Automation - Agentic and Bots From early-stage MVPs to systems that scale as business evolves. Moreover, I work closely with founders, agencies, and business teams to understand operational challenges and transform them into reliable digital solutions that are practical, scalable, and easy to manage long-term. What I can help you with building is - - SaaS Application Development - Full Stack Web Applications - AI-powered Platforms & OpenAI Integrations - CRM & ERP Systems - Healthcare & Clinic Management - Software Business Process Automation - Workflow Automation Solutions - Internal Dashboards & Admin Panels - Multi-tenant SaaS Platforms - MVP Development for Startups - API Development & Integrations - Real-time Applications - Marketplace Platforms - Custom Business Solutions - Low-Code / No-Code & Automation using Zapier, n8n, Supabase, Firebase AI workflow automation, Business process optimization - LangGraph - RAG framework and AI Model training - LLM Implementations What I Bring to the Table: Backend Expertise: PHP, Node.js, NestJS, Python – building secure, fast, and scalable services. Frontend Excellence: React, Next.js, Vue, Express, Elementor, Tailwind CSS – creating pixel-perfect, responsive UIs. Database Mastery: MySQL, PostgreSQL – optimized schemas, complex queries, and migrations. AI & Automation: ChatGPT API, LangChain, Claude, Cursor.ai, OpenAI, GitHub Copilot – delivering smarter solutions and faster development. DevOps Mindset: CI/CD, Docker, Git – enabling automated, reliable deployments. API Integrations: DocuSign, payment gateways, and custom REST/GraphQL endpoints. With over a decade of hands-on experience, I thrive in projects where performance, scalability, and reliability are critical. If you’re looking for someone who can take ownership, collaborate effectively, and turn complex requirements into production-ready solutions – let’s build something great together.

🇮🇳Dehra Dun, India$25/hr100% JSSSince Mar 2024
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Earnings and projects

MRR
$3.1k

Last 6 months ÷ 6

World#12,319 / 412k
🇮🇳Country#1,565 / 45.9k
Revenue, last 30 days
—

Read daily since Oct 31, under 30 days

Total earnings
$91k

Billed in all: $96k

World#43,526 / 412k
🇮🇳Country#6,928 / 45.9k
Per project
$91k

$18k in the last 6 months

World#254 / 412k
🇮🇳Country#17 / 45.9k
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇮🇳Country#14,379 / 45.9k
Projects in all
1
0% fixed100% hourly
World#360,671 / 412k
🇮🇳Country#42,133 / 45.9k

Earnings, last 30 days

$96.5k+$764 earned since Oct 31Billed in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$95.5k$96.0k$96.5kOct 31Nov 4Nov 7

Tracked from Oct 31, 2026.

Skill rankings: Top 4% in MySQL

Ranked by MRR among everyone on Upwork with the skill.

  1. 2ai coding assistants22 freelancers · 🇮🇳 #1Top 9%
  2. #28OpenAI Codex409 freelancers · 🇮🇳 #2Top 7%
  3. #33PostgreSQL Programming511 freelancers · 🇮🇳 #2Top 6%
  4. #45ChatGPT API Integration984 freelancers · 🇮🇳 #11Top 5%
  5. #73Claude Code818 freelancers · 🇮🇳 #18Top 9%
  6. #198NestJS3,757 freelancers · 🇮🇳 #40Top 5%
  7. #267Tailwind CSS6,978 freelancers · 🇮🇳 #45Top 4%
  8. #288LangChain3,821 freelancers · 🇮🇳 #58Top 8%