Haseeb Mirza
Backend Engineer · Islamabad, Pakistan · Open to remote
I build
the backend.
Queued jobs, webhook pipelines, multi-tenant architectures, integrations that stay connected. Currently building a fintech monitoring and open-banking compliance platform for a Swiss company.
About
What I actually do.
I write the code between the database and the API response —
queued jobs, webhook pipelines, multi-tenant SaaS, third-party integrations
that actually stay connected. Currently building a fintech monitoring and open-banking compliance platform for a Swiss company.
Before that, contract work across real estate, logistics, and B2B software —
clients with a messy manual process who needed something that runs.
I've recently added AWS hands-on to the stack: EC2, S3, RDS, IAM, Elastic IP —
running my own infrastructure, not just deploying to it. Currently working through VPC and
cloud networking. Open to senior backend roles and consulting projects.
Skills
The stack.
Core
Infrastructure
Patterns
AI & Data
Integrations
Frontend & Mobile
Selected projects
Things I've shipped.
BillFlow — Microservices Billing System
4-service billing platform with Apache Kafka event-driven communication. Each service owns its own database — Laravel handles billing, FastAPI runs analytics, Node.js manages notifications. Automated invoice generation and full Docker containerization.
Sales CRM with Calendly Sync
Replaced a spreadsheet ~20 sales reps weren't updating. Every rep's booking flows in automatically via HMAC-SHA256 signed webhooks, lands in a Redis queue, and hits the pipeline in under a second. Managers see the full picture; reps see only their own deals. Immutable audit trail on every change.
Real Estate RAG Chatbot
A white-label chatbot that answers property questions using only each agency's own documents — grounded retrieval, no hallucination, no generic AI responses. The AI provider (Gemini, OpenAI, Claude) swaps by config with zero code changes. Built as an embeddable widget with an admin panel.
AlertBridge — Webhook Relay
One POST endpoint that fans out to Slack and Discord in parallel, fully isolated. If one channel fails, the other still fires. Built to fix the real problem: a broken integration silently dropping alerts with no trace.
Notes API
REST API for managing notes with S3 file attachments. 8 endpoints covering CRUD, search, soft deletes, restore, and file uploads. Deployed on EC2 with MySQL on RDS and IAM-role-based S3 access — no access keys in the environment.
Experience
Where I've worked.
Backend Engineer
Framers Group
Building a fintech monitoring and open-banking compliance platform. Owns the multi-tenant core that scopes every tenant's data correctly, the queued monitoring layer running checks on schedule, and the 5-channel alert pipeline delivering via SMS (Twilio), email (SendGrid), Slack, Discord, and Zapier. TDD-first team.
Backend Engineer — Contract
Hiba Logics
Built production backends for clients across real estate, logistics, and B2B software. Projects include a RAG chatbot, a sales CRM, an ERP, a shipping invoicing system, and payment integrations across five gateways (Stripe, PayPal, PayFast, MTN, Tazapay).
Android Developer
The Urban Unit
Field survey data-collection and domicile applications for Punjab government urban-planning programmes.
Android & Web Developer
Earlier roles
Fleet-tracking Android app with live GPS at Fits4 (2017–18). Android apps at BitSol and Bitsparx (2016). PHP/Django web at Bashsol (2015–16). Software engineering at Lever Systems (2014–15).
Education
MS, Computer Science
Riphah International University · Grade A
BS, Computer Science
FAST-NUCES
Contact
Get in touch.
Open to senior backend roles, SaaS consulting, and projects involving integrations, automation, or practical AI.