I’m Rahul Singh, a Senior IT Solutions Architect with 10 years across enterprise architecture, API integrations, backend engineering, cloud infrastructure, ERP, CRM, POS, SaaS products, mobile apps, and AI-assisted delivery workflows.
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.
CRM, ERP, POS, banking, payment gateway, WhatsApp, Firebase.
PHP, MySQL, MSSQL, SQL optimization, ETL, data sync.
Oracle Cloud, IIS, Apache, GoDaddy/cPanel, DigitalOcean.
Roadmaps, sprints, UAT, training, documentation, adoption.
Experience
Leading 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.
Architected 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.
Coordinated engineering, QA and business stakeholders. Converted business needs into execution plans, sprint deliverables and release coordination for enterprise applications.
Delivered enterprise API ecosystems, high-volume systems, backend tuning, security frameworks, RBAC and AI-assisted development workflows for improved productivity.
Led applications to 1M+ users, managed teams up to 15 members, improved analytics pipelines, third-party integrations, ads, APIs, mentoring and delivery governance.
Built scalable mobile applications, optimized backend systems, integrated analytics, ads and APIs, and worked in Agile/Scrum teams for timely releases.
Project Portfolio
A catalog of work across mobile, web, CRM/ERP integrations, MIS automation, marketing technology, documentation and adoption.
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, Business Central, Firebase, IIS
Role: PM + Backend Developer • ~20% coding
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 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
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 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
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 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 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
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
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
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
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
Technical leadership, mentorship, cross-functional collaboration, Agile/Scrum, project management, UAT, vendor coordination.
System architecture, API design, microservices, scalable backend architecture, modular/service-oriented systems, RBAC, auth workflows.
PHP, Java, JavaScript, Python, C#, SQL, MySQL, MSSQL, HTML, CSS, Tailwind CSS.
Oracle Cloud, IIS, Apache, GoDaddy/cPanel, DigitalOcean, cloud integrations, production monitoring.
Microsoft Dynamics CRM, Business Central OData, ODOO ERP, POS integrations, ERP/POS/CRM synchronization.
ETL pipelines, lead integration, field mapping, dedupe, fraud detection systems, analytics pipelines, high-volume processing.
Firebase Analytics, Google Tag Manager, Meta Audience Network, Google Ads, UTM tracking and conversion analytics.
WhatsApp APIs, UltraMsg, CRON jobs, payment gateways, Cashfree, Razorpay, alerts, reporting automation.
Delivery DNA
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.
RBAC, audit logging, environment segregation, PII handling, encryption in transit, config hygiene, scheduled backups and compliance artifacts.
Peer reviews, API test suites, Postman, Firebase analytics, logs, error budgeting, monitoring and incident resolution.
Bridge between Sales, Marketing, Finance, Operations, vendors and engineering teams. Translate business problems into specs, sprint stories, demos and releases.
Education & Recognition
Computer Science & Engineering, Gujarat Technological University • GPA 7.55/10
Computer Science, Gujarat Technological University • GPA 6.67/10
Employee of the Month, Magicrete Building Solutions Pvt Ltd, 2023
Real Time Location Based Smart City Transport System, EIOCD, Paper ID 16CS06
Also
Let’s Build
I’m open to technical leadership, solution architecture, AI-assisted engineering and product/platform roles where hands-on execution matters.