Ajay Kumar - Senior Full-Stack & Agentic AI Engineer
Senior Consultant @ Tenarai | Ex-Techpins | Agentic AI | Full-Stack Engineering | 12+ Years
I build full-stack platforms and AI agents that run the business while you sleep.
Open to consulting & senior roles. Based in Noida, UP, India; works remotely with clients in UAE, UK, USA, Australia, India.
- 12+ years experience
- 190+ n8n workflows in production
- 500K+ users served
- 45% faster load (Freeman)
- +30% engagement (Freeman)
- 5-7 devs led
Services
- Architecture & code review - Marketplace, SaaS, multi-tenant, event platforms
- Agentic AI & automation - n8n / Power Automate workflows, LLM agents, WhatsApp bots
- Cloud & DevOps - AWS / GCP setup, Docker, CI/CD, cost & performance tuning
- Full-stack builds & rescues - Laravel, Node, React, Vue; fixing slow or unstable apps
- Tech mentoring - Career guidance, interview prep, team best practices
Case studies
Experience
- Senior Consultant, Development, Tenarai Technologies (Sep 2023 - Present)
- Team Lead, Full-Stack, AP Techpins (Mar 2020 - Sep 2023)
- Senior PHP Developer, Weblanterns Marketing (Nov 2018 - Mar 2020)
- Software Engineer, AP Techpins (Jul 2017 - Oct 2018)
- PHP Developer, Karmatech Mediaworks (May 2015 - Jun 2017)
- Developer, Sky India Technology (Feb 2014 - Apr 2015)
Skills
- Backend: PHP (11+ yrs), Laravel, CodeIgniter, Node.js, Express, Python (Flask, FastAPI, Django), REST APIs
- Frontend: React, Vue, Next.js, TypeScript, Angular, jQuery, HTML5/CSS3
- Data: PostgreSQL, MySQL, MongoDB, SQLite, Query optimisation
- Cloud & DevOps: AWS (EC2, RDS, S3, Lambda, CloudFront), GCP, Docker, Microservices, CI/CD, Linux
- Agentic AI & Automation: n8n (190+ workflows), Power Automate, Multi-agent orchestration, Function calling, LLM APIs (OpenAI, Claude, Gemini), Prompt engineering
- Practices: Agile, TDD, Code review, Technical leadership
- Integrations: Google Meet, Zoom, Twilio, Firebase, Learnosity, Clever, Zoho CRM, WhatsApp Business API
Projects
- Freeman Envision (Events) - 360° virtual event tours (Envision, Elevate, Project Leap) with SSR and GTM/GA4 analytics for Freeman, a US-based event management company.
- DPmart (E-commerce & Logistics) - Multi-vendor e-commerce marketplace, 500K+ annual shipments.
- EcomLogisticpark (E-commerce & Logistics) - Shipment tracking, warehousing, real-time updates.
- Corphunt (HR & Staffing) - Executive search & corporate staffing platform - live role mandates, shortlisting and client portal.
- Cubicles Coders (AI & IT Services) - My web, app & AI development agency site, based in Noida.
- Premium Online Hub (E-commerce & Logistics) - E-commerce store for home decor and lighting, delivered through Cubicles Coders with SEO and product listing setup.
- KT Hair & Beauty (Local Services) - Booking site for a London hair & beauty salon - services, gallery and appointments.
- MM Architecture & Structural Planning (Local Services) - UK structural planning service - instant steel beam quotes and Building Regs-compliant calculations.
- MM Heating, Electrical & Plumbing (Local Services) - UK home services booking site - gas safety certificates, heating, electrical and plumbing quotes.
- Claudee.cloud (EdTech) - Marketplace for selling courses and code.
- Edjuncture LMS (EdTech) - School-district LMS with live classes, attendance, homework - marketing site at edjuncture.com, web app at app.edjuncture.com.
- iTutor (EdTech) - Live tutoring platform for 200+ US schools and 10k+ students - virtual classrooms, scheduling and a student/parent login portal.
- n8n Automation Suite (AI & IT Services) - 190+ production workflows (WhatsApp/Telegram bots, API sync, scheduled jobs), self-hosted.
Industries
E-commerce, Travel, Logistics, Events, EdTech, Hotel Booking, Flight Booking, FinTech
Certifications
- BotCampus AI Agent Builder (Feb 2025)
- Vanderbilt Prompt Engineering (Jan 2025)
- Google Cloud Gemini (May 2025)
- Infogain GenAI Fundamentals (Nov 2024)
- Infogain GenAI Beginner (Jan 2026)
- Ignis Fundamentals (Mar 2026)
Education
- MCA (IT), Graphic Era University, Dehradun (2013)
- BCA, MJP Rohilkhand University (2010)
Frequently asked questions
what has ajay built
I've built DPmart (a multi-vendor e-commerce marketplace handling 500K+ annual shipments), Claudee.cloud (a course & code marketplace), a courier & logistics platform, Edjuncture LMS (500+ school institutions), and a self-hosted n8n suite of 190+ production automation workflows.
is he strong in aws
Yes — I work extensively with AWS (EC2, RDS, S3, Lambda, CloudFront) alongside GCP, Docker and CI/CD, and led architecture work that cut load time by 45% on the Freeman event platform.
tell me about his n8n work
I run 190+ production n8n workflows self-hosted — CI/CD deploy bots, log management tools, a 100+ node social automation system, an AI avatar video pipeline (Claude + HeyGen), and multi-client social posting engines.
why hire him for an ai agent project
12+ years of full-stack engineering plus hands-on agentic AI: multi-agent orchestration, function calling, LLM APIs (OpenAI, Claude, Gemini), and 190+ live n8n automations already running in production.
is he available
Yes, currently open to consulting and senior full-time roles (Hybrid/Remote, NCR-based). Best to email contact@ajaydevhub.com to start a conversation.
can you help with my project
Likely, yes. I take on architecture reviews, agentic AI/automation builds, cloud & DevOps work, and full-stack rescues. Book a free 30-min call or message on WhatsApp to discuss specifics.
how do i join the developer community
Scroll to the 'Dev Community' section and use the Join WhatsApp Community button, or fill the short interest form there — I'll add you personally.
Blog: AI Daily Brief and guides
Free tools (42)
- Percentage Calculator - X% of Y, what percent X is of Y, and percentage increase or decrease.
- ROI Calculator - Calculate return on investment and annualized ROI from an initial investment and final value.
- BMI Calculator - Check your Body Mass Index and weight category in metric or imperial units.
- Unit Converter - Length, weight, temperature, area, volume, speed and data size.
- QR Code Generator - Turn any URL or text into a downloadable QR code, with custom colors.
- Image Compressor & Resizer - Compress and resize JPG/PNG/WebP images in your browser, no upload needed.
- Word & Character Counter - Words, characters, sentences, paragraphs and reading time as you type.
- Password Generator - Generate strong, random passwords with custom length and character sets.
- JSON Formatter & Validator - Format, minify and validate JSON with clear error messages.
- Base64 Encoder & Decoder - Encode and decode Base64 with UTF-8 and URL-safe support.
- App & Website Cost Estimator - Ballpark cost, hours and timeline for a website, web app, mobile app, marketplace or AI project.
- AI Automation Savings Calculator - See how much time and money automating a repetitive task with AI or n8n would save, and the payback period.
- Freelance Hourly Rate Calculator - Work out the hourly, daily and monthly rate you need to hit your income goal after tax, expenses and time off.
- Free Invoice Generator - Create a clean invoice with line items and tax, then print it or save it as a PDF - nothing is uploaded.
- Email Signature Generator - Create a professional HTML email signature and copy it straight into Gmail, Outlook or Apple Mail.
- SIP Calculator - Estimate the future value of a monthly SIP, with optional yearly step-up and a year-by-year growth table.
- EMI Calculator - Monthly EMI, total interest and a year-wise repayment schedule for home, car and personal loans.
- GST Calculator - Add or remove GST at any rate, with CGST/SGST or IGST split. Updated for the 5% / 18% / 40% slabs.
- Income Tax Calculator (New vs Old Regime) - Compare tax under the new and old regimes for FY 2026-27 and see which one saves you more.
- Regex Tester - Test regular expressions live with match highlighting, capture groups and flags.
- JWT Decoder - Decode a JSON Web Token's header and payload and check expiry - entirely in your browser.
- Cron Expression Explainer - Translate a cron schedule into plain English and see its next run times.
- Unix Timestamp Converter - Convert Unix timestamps to readable dates and back, in seconds or milliseconds.
- UUID Generator - Generate v4 (random) and v7 (time-ordered) UUIDs in bulk, with copy and format options.
- Color Palette Generator - Generate harmonious 5-color palettes from any base color, with HEX values and CSS variables.
- Text Diff Checker - Compare two texts or code snippets and see added and removed lines side by side.
- Markdown Previewer - Write Markdown and see a live rendered preview, then copy the HTML.
- CSS, JS & HTML Minifier - Minify CSS, JavaScript or HTML to cut file size, with the savings shown.
- Case Converter - Convert text to UPPER, lower, Title, Sentence, camelCase, snake_case, kebab-case and more.
- URL Encoder & Decoder - Percent-encode or decode URLs and query strings, for a full URL or a single component.
- Hash Generator (SHA-256, SHA-512, HMAC) - Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes, plus HMAC, from any text.
- JSON to CSV & CSV to JSON Converter - Convert a JSON array to CSV or CSV to JSON, with quoting and a download button.
- Color Contrast Checker (WCAG) - Check text and background colour contrast against WCAG AA and AAA with a live preview.
- UTM Link Builder - Add UTM parameters to any URL so campaign traffic shows up correctly in analytics.
- PDF Studio - All-in-One PDF Tool - Merge, reorder, rotate, delete, split pages, add images, export as images and hand off to the editor - in one workspace.
- PDF Merger - Combine several PDFs into one. Reorder the files, then download the merged PDF.
- PDF Page Organizer (Reorder, Rotate, Delete) - Rearrange, rotate, delete or extract pages of a PDF with a visual preview.
- PDF Splitter - Split a PDF by page ranges or into single pages, and download as separate files or a ZIP.
- PDF Editor (Add Text, Images & Shapes) - Add text, images, signatures, highlights and whiteout boxes to a PDF, then download it.
- Image to PDF Converter - Turn JPG, PNG, WebP or other images into one PDF. Reorder, choose page size and download.
- PDF to Images (PNG & JPG) - Convert PDF pages to PNG or JPG images, individually or as a ZIP.
- PDF Compressor - Reduce PDF file size. Smart mode recompresses images and keeps text; Maximum turns pages into images.
Games
Contact
Email: contact@ajaydevhub.com. Book a call: 30-minute call. LinkedIn: https://www.linkedin.com/in/ajaykumar011/. GitHub: https://github.com/Ajay2021.