Open to full-time roles · Remote

Rajendra KumarSenior Full-Stack & AI Engineer

10+ years shipping production Vue.js, Laravel and Next.js platforms end to end, from architecture to AWS. For the last two years I have put OpenAI and Claude features into live products, including a founding-engineer role on a multi-tenant SaaS with an AI booking layer.

  • Senior Full-Stack Engineer
  • AI Engineer
  • Software Architect
  • Tech Lead
Rajendra Kumar
10+
years building production software
10K+
registered users on a product I built core features for
4–6
engineers led, 3–4 mentored
90%+
test coverage held across active projects

Skills

The stack I ship with.

Everything below is used in production, not just listed.

Full experience

Frontend

Vue.js 3 (Composition API)Next.jsReactTypeScriptPiniaVuexTailwind CSSSASS

Backend

Laravel (PHP)RESTful API designNode.jsMySQLPostgreSQLRedis

AI integration

OpenAI APIClaude APILLM feature developmentPrompt engineering

Testing & QA

VitestPHPUnitTest-driven development

DevOps & Cloud

AWS (EC2, S3, CloudFront, RDS)DockerGitHub Actions CI/CDNginxLinux

Portfolio

Platforms I have engineered.

Live platforms delivered as an engineer at Cracker Digital Media for its clients, across SaaS, AI dispatch, booking, finance and title.

See all projects
Actionable HQ production login and SSO interfaceCracker Digital Media

Actionable HQ

Live

Engineer at Cracker Digital Media

Team accountability and behaviour-change SaaS with 10K+ registered users — AI commitments, real-time chat, and multi-channel engagement.

  • Built the core AI commitment engine with OpenAI — vague goals become structured commitments with milestone notifications
  • Real-time threaded chat with nested replies and emoji reactions on Vuex high-frequency state
Vue.jsOpenAIVuexWhatsApp API
Tecton Scheduler production sign-in screenCracker Digital Media

Tecton Scheduler

Live

Founding Engineer at Cracker Digital Media

Multi-tenant SaaS — analytics, forecasting, and an AI booking layer on top of Acuity Scheduling.

  • Analytics & forecasting dashboards synced from Acuity — revenue, bookings, no-shows, and 7/30/90-day demand projections
  • Demand & pricing insights: booking heatmap, lead-time mix, and promotion lift vs matched baseline
Multi-tenantAcuityOpenAIAnalytics
Markham Heating & Air Conditioning live homepageCracker Digital Media

Markham Heating & Air Conditioning

Live

Engineer at Cracker Digital Media

Family-owned HVAC serving the GTA since 1983 — AI dispatch, geo-aware scheduling, and online booking that cuts inbound call volume.

  • AI job dispatch agent that finds the nearest available tech already in-area and auto-assigns the job
  • Geo-aware slot allocation by technician location and workload for faster emergency response
AI agentsDispatchBookingHVAC
DexaFit Denver homepage with fitness metrics and booking CTACracker Digital Media

DexaFit Denver

Live

Frontend Engineer at Cracker Digital Media

Science-backed body composition booking platform — multi-step appointments, goal-based assessments, and live session pricing for DEXA, VO2 Max, and RMR.

  • 8-step appointment flow (Goal → Experience → Assessment → Schedule → Payment) with a live session summary and running total
  • Goal-based paths — Performance, Longevity, Metabolism, multi-scan Packages, and gift cards — that shape recommended assessments
ReactNext.jsTailwind CSSTypeScript
Iron Trust Capital Partners homepage — commercial real estate debt with a live rates tickerCracker Digital Media

Iron Trust Capital Partners

Live

Engineer at Cracker Digital Media

Website for a Houston commercial real estate debt advisory arranging financing of $100M+ nationwide, with loan programs, analytical tools and a transaction submission flow.

  • Live benchmark-rates ticker (WSJ Prime, SOFR, Treasury yields, Fed Funds) pinned above the navigation
  • Analytical tools lenders use: loan sizing, DSCR and debt yield, a 1031 exchange deadline clock, and cost segregation estimates
Web appCalculatorsFinanceLead capture
Carta Title Company homepage — Houston title, escrow and closing servicesCracker Digital Media

Carta Title Company

Live

Engineer at Cracker Digital Media

Website for a Houston title, escrow and settlement company serving every region of Texas, with closing calculators and an order-title flow.

  • Instant calculators for buyer closing costs, seller net sheet, monthly payment, refinance, and title and closing cost estimates
  • Contract-to-funding closing process laid out step by step, and service paths for residential, commercial, land, refinance and 1031 exchange transactions
Web appCalculatorsTitle & escrowLocal SEO

Experience

A decade of owning systems end to end.

Full timeline
  1. Senior Full Stack Developer / Technical Lead · Cracker Digital Media

    Jun 2019 — Present

    Delivering production Vue.js and Laravel platforms end-to-end — architecture through AWS deployment — including OpenAI and Claude features on live products, and a founding-engineer role on a multi-tenant SaaS with an AI booking layer.

    Vue.js 3LaravelNext.jsTypeScriptOpenAIClaudeMySQLPostgreSQLRedisAWS
  2. Front-End Engineer · Kriscent Techno Hub Pvt. Ltd.

    Jan 2015 — Jun 2019

    Built responsive, mobile-first UIs in Vue.js and React across 5+ client projects, with a focus on performance, accessibility, and conversion.

    Vue.jsReactTailwind CSSBootstrapSASS

Code

46 repositories across 12 systems.

Most of it is private client work, so it is listed with context rather than linked. 10 repositories are public and open on GitHub.

What people say

Worked with, and would work with again.

“Rajendra doesn't just write code — he explains it in a way that lets me make decisions with confidence. That's rare, and it's exactly what a growing firm like ours needed.”
Gourav Bansal

Gourav Bansal

Founder, Bansal & Co

“We needed someone who could move fast without breaking things. Rajendra shipped clean, reliable work every time — no hand-holding required.”
Kamaljeet Singh

Kamaljeet Singh

Founder, AyudhSEO

Let's talk

Hiring a senior full-stack or AI engineer?

I am open to full-time roles, remote. Send the role or grab my resume. I reply within 24 hours.

Prefer to read first? See my full experience