Available for freelance · Remote worldwide

Full-stack
products that
ship.

Backend systems, AI integration, end-to-end delivery. I build what your startup actually needs — without the bloat.

Start a project View my work
6+
Projects shipped
50%
Downtime reduced
40%
Faster processing
24h
Response time
Node.jsTypeScriptGoNext.jsPostgreSQLMongoDBRedisDockerAWS ECSLangChainGroqGeminiRabbitMQPrismaAirflowGitHub ActionsDrizzle ORMReactNode.jsTypeScriptGoNext.jsPostgreSQLMongoDBRedisDockerAWS ECSLangChainGroqGeminiRabbitMQPrismaAirflowGitHub ActionsDrizzle ORMReact
What I build

Three ways I can
help your product

01
⚡
Backend & APIs
Scalable server infrastructure that won't become technical debt. REST APIs, auth systems, and databases engineered to last.
  • REST APIs & microservices
  • Auth & RBAC systems
  • Multi-tenant architecture
  • DB design & optimization
02
🚀
Full-Stack Apps
End-to-end products, database to UI, deployed to production with CI/CD and built to scale from day one.
  • Next.js + Node.js applications
  • Payment integrations
  • AWS ECR/ECS deployment
  • Analytics & dashboards
03
✦
AI Integration
Practical AI that ships. LLM pipelines, RAG systems, and smart automation — real features, not demos.
  • LangChain & LLM pipelines
  • RAG & vector search
  • Groq / Gemini / OpenAI
  • Workflow automation
Experience

Where I've shipped

Sep 2025 – Present● CURRENT
Software Engineer
Ajar
  • ▶ Built end-to-end notification system with Courier
    • Designed per-user preference controls across 18 segments (leases, payments, maintenance, etc.)
    • Multi-channel delivery — Slack, email, SMS — with RBAC-aware recipient resolution so only authorised users receive each event
    • In-app hub with real-time unread count badge, action URLs, and related entity linking
  • ▶ Owned the full lease contract system (AR/EN)
    • Designed the document generation pipeline to support Bilingual, English-only, and Arabic-only output from a single template — no duplicate templates
    • Auto-renewal engine with configurable reminder days at account and per-lease level; ONE_TIME invoice frequency for short-term rentals
    • Lease date boundary validation, multi-unit selection, and schema changes with DB migrations and rollback scripts
  • ▶ Slashed build times across the entire stack
    • Reduced Docker image size from 1.3 GB → 320 MB using multi-stage builds — smaller deploys, faster container startup
    • Angular persistent cache + incremental builds cut local CI from 72s → 18s (75% faster); esbuild for server dev reduced rebuild time 55×
    • Removed redundant clean steps from all CI jobs, enabling incremental output reuse across deploys
  • ▶ Shipped advanced reporting & bulk import
    • Rewrote the advanced report query using PostgreSQL views and pre-aggregated data, eliminating full-table scans on large invoice datasets
    • Made bulk import fully async — jobs are queued, processed in the background, and polled for status — cutting CS team's import failure rate by ~50% and halving turnaround time
    • Social login (Google, Apple, Facebook) via Firebase Auth — token verification on the server, social ID columns on the users table, zero password flow
Node.jsTypeScriptPostgreSQLAngularCourierMyFatoorahFirebase
Jan – Aug 2025
Software Engineer
Autonomis
  • ▶ Engineered fine-grained RBAC system
    • View/edit permissions on shared documents — reduced bug-related downtime by 50%
    • Role management with instant access revocation across the platform
    • Integrated 'never throw' philosophy for more robust error handling throughout
  • ▶ Architected scalable multi-tenant platform
    • Unique invite links per organisation with centralised onboarding controls
    • Organisation analytics dashboard showing employee usage against plan limits
    • MIS report dashboards with customisable views and automated Airflow delivery
  • ▶ Constructed Airflow alert pipeline
    • Automated notifications to Slack and email triggered by business events
    • Resolved issues in AI-generated backend code, stabilising production reliability
    • Deployed on AWS ECR/ECS with CI/CD pipeline via GitHub Actions
Node.jsTypeScriptAirflowPostgreSQLAWS ECS
Oct – Dec 2024
Backend Developer
PixelSaffron
  • ▶ Built scalable e-commerce backend from scratch
    • REST API with MongoDB + Express serving a clothing brand's full order lifecycle
    • Wallet management system and coupon engine with DB schema design
    • JWT-based auth with role-based access control across all endpoints
  • ▶ Integrated PhonePe payment gateway
    • Webhook-based real-time order status updates on payment events
    • Handled payment edge cases including partial captures and refund flows
    • Secured all payment endpoints with request validation and signature verification
Node.jsExpressMongoDBPhonePeJWT
Selected work

Things I've built
that actually ship

★ Featured · AI Product ↗
Elevare — AI Email Management
↗ 40% faster email processing
Full-stack AI application with Groq LLM classification, smart routing, analytics dashboards, and RazorPay payment integration.
Next.jsTypeScriptGroqPrismaRazorPay
Microservices · Go ↗
Mini Ride Booking
↗ Real-time ride matching
Go microservices with RabbitMQ event-driven architecture, SQLC type-safe DB, Docker Compose.
GoRabbitMQPostgreSQLDocker
AI · LangChain ↗
Enhanced Dimaag
↗ Instant YouTube summaries
LangChain + Gemini pipeline for video intelligence. Clerk auth, Drizzle ORM persistence.
ReactLangChainGeminiDrizzle
AI Pipeline ↗
Auto-Blog
↗ GitHub → blog posts
Automated content generation from commits via Convex backend and OpenRouter multi-model API.
Next.jsConvexOpenRouterClerk
Finance ↗
Finance Tracker
↗ Smart categorization
SMS-parsing finance platform with auto-categorization engine, analytics, Recharts visualizations.
Next.jsPostgreSQLRechartsPrisma
About
"80% thinking,
20% coding."

I'm Karan Mali, a backend-first engineer who believes the best software is built by thinking deeply before touching the keyboard.

Currently at Ajar, building production backend systems. Previously at Autonomis and PixelSaffron, shipping RBAC platforms, multi-tenant architectures, payment integrations, and AI features.

I write about backend engineering on Medium. Latest: "The ORM Trap That Cost Me a Backend Job."

GitHub ↗ LinkedIn ↗ Medium ↗
Contact

Ready to
build?

Tell me about your project. I respond within 24 hours and only take on work I can fully commit to.

karanmali122001@gmail.com
GitHub · LinkedIn · Medium