Enterprise APIs
CRM, ERP, POS, banking, payment gateway, WhatsApp, Firebase.
IT Head • Technical Lead • AI-assisted Builder
I turn business problems into
scalable enterprise platforms.
Building custom apps that scale from idea to production.
I’m Rahul Singh, a Senior IT professional with 10 years of experience in mobile app development, custom application development, backend systems, API integrations, and enterprise solutions, currently expanding my expertise in AI-assisted development and intelligent automation.
10
Years Experience
1M+
Users Supported
90%
Processing Time Reduced
200+
Retail Outlets Supported
Core Positioning
Hands-on architect who can manage teams, write code, optimize systems, and ship business-critical platforms.
PHPJavaScriptPythonFlutterMySQLMSSQLREST APIsOpenAI APIDynamics CRMBusiness Central IntegrationOdoo ERPCloud Infrastructure
Backend & Data
PHP, MySQL, MSSQL, SQL optimization, ETL, data sync.
Cloud & Infra
Oracle Cloud, IIS, Apache, GoDaddy/cPanel, DigitalOcean.
Product Delivery
Roadmaps, sprints, UAT, training, documentation, adoption.
Experience
From Android developer to enterprise IT leader.
IT Head / Technical Lead — Ajay’s Good Food Pvt Ltd
Oct 2025 – PresentLeading enterprise architecture and API integration across ERP, POS and backend systems for 200+ retail outlets. Designing REST API ecosystems, centralized reporting, secure RBAC, audit logging, monitoring, incident resolution and high-volume synchronization workflows.
Assistant General Manager – IT / Full-stack Leader — Magicrete
Jun 2022 – Oct 2025Architected integrations across Microsoft Dynamics CRM, Business Central, payment gateways and reporting systems. Built dashboards, automation pipelines, WhatsApp workflows and AI-assisted delivery practices that eliminated external development costs while accelerating feature delivery.
Systems Analyst — Marico Limited
Mar 2022 – Jun 2022Coordinated engineering, QA and business stakeholders. Converted business needs into execution plans, sprint deliverables and release coordination for enterprise applications.
Founder / Technical Lead — MaxAvya Technology
Aug 2021 – Jun 2022(Part-time)Founded and managed my own technology venture, serving multiple clients across mobile application development, custom software solutions, and third-party integrations.
Product Manager — Escrow InfoTech
Jun 2018 – Mar 2022Led applications to 1M+ users, managed teams up to 15 members, improved analytics pipelines, third-party integrations, ads, APIs, mentoring and delivery governance.
Android Developer — Escrow InfoTech
Jun 2016 – May 2018Built scalable mobile applications, optimized backend systems, integrated analytics, ads and APIs, and worked in Agile/Scrum teams for timely releases.
AI Experiments
Some random projects built using AI and GenAI.
Experimental products created to explore large language models, document intelligence, structured data analysis, prompt engineering and AI-assisted development.
CVtoSite
An AI-powered tool that converts an uploaded CV into a responsive, modern and customizable portfolio website using OpenAI-generated HTML content.
PHP, JavaScript, Tailwind CSS, OpenAI API, MySQL
AskMySheet
Upload a CSV file and ask questions in natural language. The AI analyses only the uploaded dataset and returns grounded answers without responding to unrelated questions.
PHP, MySQL, JavaScript, OpenAI API, CSV Processing
AI Document Chatbot
This product is a document-based AI chatbot that answers questions using only the information uploaded by the admin. It can be used for customer support, product details, company policies, FAQs, and internal knowledge sharing. The chatbot includes category-based document management, a floating website widget, and strict context-only responses. It can be easily integrated into any website using a simple JavaScript snippet.
PHP, MySQL, JavaScript, OpenAI API, txt/PDF Processing
AskMySQL
AskMySQL is a framework-free PHP 8+ web application that converts natural-language questions into safe MySQL SELECT queries using OpenAI, executes them through PDO, and displays both the generated SQL and the result table. The app is designed for internal reporting, MIS dashboards, ERP databases, sales analysis, and admin teams who want to ask business questions without writing SQL manually.
PHP, MySQL, JavaScript, OpenAI API, txt/PDF Processing
ATS ready CV
Creates a tailored, ATS-ready CV based on the shared job description, aligning relevant skills, experience and keywords with the role requirements.
PHP, JavaScript, OpenAI API, Prompt Engineering
Project Portfolio
Products, portals, integrations and automation systems.
A catalog of work across mobile, web, CRM/ERP integrations, MIS automation, marketing technology, documentation and adoption.
Sarthak Sales App
Sales-force app for order punching, reports, cases, tickets and activity tracking. Mobile FE → PHP API layer → MySQL/MSSQL → CRM/ERP connectors with Firebase monitoring.
Flutter/Dart, PHP, MySQL, MSSQL, Dynamics CRM, Firebase, IIS
Role: PM + Backend Developer • ~20% coding
Buildmart App
Customer loyalty platform for coupon scan, validation, redemption, reporting and audit trails. Scaled transaction value from ₹18 lakhs/month to ₹2 crores/month.
Flutter/Dart, PHP, MySQL, MSSQL, Firebase, CRM, Cashfree, Razorpay, IIS, Apache
Role: PM + Backend Developer • ~30% coding • ~40% DBA
Vendor Portal
Vendor onboarding, document management, workflow approvals, PO/invoice visibility, maker-checker flows, attachment storage, audit logs and vendor role mapping.
PHP, MySQL, JavaScript, HTML/CSS, MSSQL, IIS
Role: PM • ~5% coding
Buildmart Web Portal
Centralized customer master, entitlements, service history and loyalty profile with CRM sync, deduplication and golden-record approach.
PHP, MySQL, JavaScript, HTML/CSS, MSSQL, IIS
Role: PM • ~5% coding
Banking API
Banking and payment API integrations for collections, reconciliation and notifications with secure contracts, IP allowlists, key rotation and finance dashboards.
PHP, MySQL, MSSQL, Oracle Cloud
Role: PM + Backend Developer • ~25% coding
Lead Integration
ETL jobs to fetch, validate, map, dedupe and push leads from IndiaMART, Facebook, web forms and landing pages into CRM with dead-letter queues and retries.
PHP, MySQL, MSSQL, IIS
Role: PM + Backend Developer • 100% coding
Lead Analysis & Update
Lead scoring, routing rules, dashboards, bulk update utilities, idempotent CRON jobs and CSV exports for operations review.
PHP, MySQL, JavaScript, HTML/CSS, MSSQL, IIS
Role: PM + Backend Developer • 100% coding
Campaign Landing Pages
Campaign pages with forms, validations, CRM/email/WhatsApp lead capture, GTM tracking, UTM normalization, honeypot, rate-limit and success/error UX.
PHP, MySQL, JavaScript, HTML/CSS, MSSQL, GTM, GoDaddy/cPanel
Role: Full-stack Developer • 100% coding
Company Website
Corporate presence with product pages, contact forms, analytics, form-to-CRM/email pipeline, uptime monitoring, SEO hygiene and tracking updates.
PHP, MySQL, JavaScript, HTML/CSS, MSSQL, GTM, GoDaddy/cPanel
Role: PM • ~5% coding
WhatsApp Auto Reporting
Daily MIS, alerts and exception notifications via WhatsApp with schedules, recipients, data contracts, tabular summaries, renderers, failure alerts and delivery audit logs.
PHP, MySQL, JS, HTML/CSS, MSSQL, UltraMsg API, IIS
Role: Full-stack Developer • 100% coding
Support & User Training
SOPs, FAQs, quick-start guides, role-based training for sales, vendor and finance users, video walkthroughs, playbooks and hypercare support.
Training, SOPs, Adoption, Issue Triage
Role: PM / Trainer
Technical & Functional Docs
BRDs, FRDs, API specs, ERDs, sequence diagrams, deployment runbooks, rollback procedures and vendor/team handoff documentation.
BRD, FRD, API Specs, ERD, Runbooks
Role: Author / Owner
Skills
Full-stack technical leadership toolkit.
Leadership
Technical leadership, mentorship, cross-functional collaboration, Agile/Scrum, project management, UAT, vendor coordination.
Architecture
System architecture, API design, microservices, scalable backend architecture, modular/service-oriented systems, RBAC, auth workflows.
Languages
PHP, Java, JavaScript, Python, C#, SQL, MySQL, MSSQL, HTML, CSS, Tailwind CSS.
Cloud & Infra
Oracle Cloud, IIS, Apache, GoDaddy/cPanel, DigitalOcean, cloud integrations, production monitoring.
Enterprise Systems
Microsoft Dynamics CRM, Business Central OData, ODOO ERP, POS integrations, ERP/POS/CRM synchronization.
Data & ETL
ETL pipelines, lead integration, field mapping, dedupe, fraud detection systems, analytics pipelines, high-volume processing.
Marketing & Analytics
Firebase Analytics, Google Tag Manager, Meta Audience Network, Google Ads, UTM tracking and conversion analytics.
Automation
WhatsApp APIs, UltraMsg, CRON jobs, payment gateways, Cashfree, Razorpay, alerts, reporting automation.
Delivery DNA
Practical systems. Clear governance. Real adoption.
My work sits at the intersection of business operations and engineering execution: requirement discovery, architecture, coding, integrations, QA, training, post-go-live support and measurable adoption.
Governance & Security
RBAC, audit logging, environment segregation, PII handling, encryption in transit, config hygiene, scheduled backups and compliance artifacts.
Quality & Observability
Peer reviews, API test suites, Postman, Firebase analytics, logs, error budgeting, monitoring and incident resolution.
Stakeholder Collaboration
Bridge between Sales, Marketing, Finance, Operations, vendors and engineering teams. Translate business problems into specs, sprint stories, demos and releases.
Education & Recognition
Bachelor’s Degree
Computer Science & Engineering, Gujarat Technological University • GPA 7.55/10
Diploma
Computer Science, Gujarat Technological University • GPA 6.67/10
Award
Employee of the Month, Magicrete Building Solutions Pvt Ltd, 2023
Publication
Real Time Location Based Smart City Transport System, EIOCD, Paper ID 16CS06
Let’s Build
Need someone who can manage, architect and still code?
I’m open to technical leadership, solution architecture, AI-assisted engineering and product/platform roles where hands-on execution matters.