Remote-ready
Bangladesh · UTC+6 · US/EU overlap
Mohasin
Hossain.
› Senior Laravel Backend Engineer for remote SaaS & AI teams
7+ years delivering scalable SaaS platforms, healthcare ERPs, AI-powered integrations, and REST API for mobile apps. I partner with distributed teams across the USA, Europe, New Zealand, and the UK, with a strong focus on clean API design, security, and measurable performance wins.
7+
Years XP
98.5%
DB Optimization
10K+
App Downloads
99.9%
AWS Uptime
scroll
02 — Toolkit
The stack I build with.
❯ whoami --skills
# Senior Laravel Developer · 7+ yrs
production
# Dhaka, BD · GMT+6 · Remote-ready
Backend & AI
Frontend
Database
DevOps & Cloud
API & Security
Testing & Observability
01 — About
Building systems that scale.
Senior Laravel Developer based in Dhaka, Bangladesh — shipping scalable SaaS platforms, healthcare ERPs, AI integrations, and REST APIs for mobile apps since 2018. Self-taught into engineering from Zoology.
I've led engineering teams across the USA, France, New Zealand, and UK — with a strong focus on clean architecture, OpenAPI documentation, security (OWASP), and measurable performance gains. Always building with the end system in mind.
Quick Facts
03 — Trajectory
7 years of production.
Team Lead
- Lead the team, architected multi-tenant SaaS e-commerce platform with sub-200ms response times under load
- Built Medical ERP for Tuwharetoa Health NZ — 5,000+ patients, 2,000+ daily records, Flutter mobile app, OWASP-compliant
- Delivered Badhan blood donation platform — 10,000+ Play Store downloads, geolocation matching, versioned Laravel API
- Integrated OpenAI API and LLM features into SaaS products; CI/CD pipeline cut deploy time by 70%
- Fundraising platform (NZ) — 10,000+ users, Stripe + Worldline; LMS for 1,000+ students
Senior Software Engineer
- Scaled multi-vendor e-commerce to 1,000+ vendors and blood donation platform to 20,000+ users
- Maintained 99.9% AWS uptime throughout; automated manual workflows reducing overhead by 60%
- Implemented Redis caching, auto-scaling, and RDS read replicas for high-traffic reliability
Backend Developer (Remote)
- Boosted API performance 35% via GraphQL/DataLoader optimisation
- Integrated Slack, Teams, ClickUp automation; built Google Sheets export pipelines
Junior Web Developer
- Built 5+ marketplace products (POS, HRM, Booking) for Codecanyon using Laravel & Vue.js
04 — Case Studies
Systems I've built end-to-end.
Case Study · Web & Mobile App
Al Hadi — Hajji Itinerary App
A web and mobile application built to help Hajj/Umrah travelers manage their full itinerary, schedules, important trip details, and guided travel flow in one place.
Trip planning · Itinerary management · Mobile-first experience
Laravel
API
Mobile App
Itinerary
Case Study · Customer Intelligence
Feeder — Customer Intelligence Platform
A customer intelligence platform designed to collect, organize, and analyze customer insights, helping businesses better understand behavior, feedback, and engagement.
Customer insights · Feedback analysis · Business intelligence
Laravel
SaaS
Analytics
Customer Data
SaaS · Auto Body Shop
Helios Pro
Cloud-based shop management platform for One Blink Tech (USA). Real-time
production
boards, drag-and-drop job scheduling, multi-location support, and Stripe subscription billing.
+25% efficiency · +40% faster scheduling
LaravelStripeReal-timeAWS
Healthcare · New Zealand
Medical ERP + Flutter App
Full-stack ERP for Tuwharetoa Health Charitable Trust — 5,000+ patients, 2,000+
daily records, RBAC, billing, pharmacy, and Flutter iOS/Android app for field clinicians.
5,000+ patients · 2,000+ daily records
LaravelFlutterOpenAPIOWASPPest
SaaS · E-Commerce
Multi-Tenant SaaS Platform
Isolated per-tenant DB architecture, subscription billing engine (SSLCommerz,
Bkash), tenant provisioning in under 30s. Sub-200ms response via Redis + AWS S3 CDN.
10–50 stores · sub-200ms · 30s provisioning
LaravelRedisAWS S3SSLCommerzBkash
Performance Rescue
SaaS DB Optimization
Eliminated N+1 queries via Telescope profiling — slashed query count from 1,380 to
21 per request. Page load dropped from 4s to under 1s.
98.5% query reduction · 4s → <1s load
Laravel TelescopeQuery
OptimizationEloquent
Blood Donation · Mobile
Badhan App
National donor platform with geolocation matching, real-time alerts, and Flutter
iOS/Android app backed by versioned OpenAPI-documented Laravel REST API.
10,000+ Play Store downloads
Laravel REST APIOpenAPIGeolocation
Scraping · UK
Product Scraping Platform
Integrated 70+ product sources including eBay via Laravel Horizon queues. Proxy
rotation and exponential backoff anti-bot handling. 90% data coverage improvement.
70+ sources · 90% coverage improvement
Laravel HorizonQueuesProxy RotationeBay API
05 — Community
Giving back.
ADPList Mentor
Backend engineering & remote career growth. Open sessions for juniors through
seniors.
Technical Blogger
Writing at mohasin.dev/blog — Laravel, system design, and performance deep-dives.
15+ Live Projects
Portfolio of production-grade systems at mohasin.dev and github.com/mohasin-dev.
06 — Now
What I'm up to right now.
🔨 Building
AI-powered SaaS
features
Integrating LLM workflows into
multi-tenant SaaS platforms — smarter automations, AI-generated insights, and OpenAI API pipelines.
📖 Learning
Advanced system
design
Deep-diving into distributed systems,
event sourcing, and CQRS patterns for high-scale Laravel architectures.
✍️ Writing
Performance &
architecture posts
Publishing Laravel performance deep-dives
and system design breakdowns on mohasin.dev/blog.
🎓 Mentoring
ADPList sessions
Regular 1-on-1 sessions with junior to
mid-level engineers on backend engineering and remote career growth.
🌍 Working
Team Lead @ Web
Solution Firm
Leading a 5-member team shipping
healthcare ERPs, SaaS platforms, and Flutter mobile apps for clients in NZ, USA & UK.
💼 Open to
Remote opportunities
Actively exploring senior backend / lead
engineer roles at remote-first product companies building serious software.
Last updated: June 2025
07 — Notes
Things I write about.
Laravel · Performance
How I reduced 1,380
queries to 21 on a live SaaS app
A real-world walkthrough of using Laravel Telescope to
profile, identify, and eliminate N+1 queries — achieving 98.5% reduction.
→ mohasin.dev
Architecture · SaaS
Multi-tenant SaaS
in Laravel: isolated DBs vs shared schema
Tradeoffs, implementation patterns, and tenant
provisioning under 30s — lessons from building a production multi-tenant platform.
→ mohasin.dev
AI · Laravel
Integrating OpenAI
into a Laravel SaaS without losing your mind
Practical patterns for LLM integration — streaming
responses, prompt management, rate limiting, and keeping costs sane.
→ mohasin.dev
DevOps · AWS
99.9% uptime on
AWS: the boring infrastructure decisions that matter
Auto-scaling, RDS read replicas, Redis caching, and
GitHub Actions CI/CD — how to engineer for reliability without over-engineering.
→ mohasin.dev
08 — Recommendations
What teammates say.
"
Mohasin is one of the most reliable backend engineers I've worked with. He architected our entire Medical
ERP from scratch — the codebase is clean, well-tested, and scales effortlessly. His attention to security
and documentation is exceptional.
TH
Tuwharetoa Health
Client · Kaupapa Māori Health,
NZ
"
Working with Mohasin on our GraphQL API was a great experience. He identified performance bottlenecks
immediately and delivered a 35% speed improvement. Professional, communicative, and always ahead of
deadlines.
FD
Feedier
Engineering Team · France ·
Remote
"
Mohasin led our team through a complex multi-tenant SaaS build and kept everything on track. His technical
decisions were solid — the platform handled thousands of daily requests from day one with sub-200ms
response times.
OB
One Blink Tech
Product Owner · USA ·
heliospro.io
"
Mohasin is an outstanding mentor on ADPList. His feedback is practical and grounded in real production
experience. He helped me navigate my transition into backend engineering with clarity and genuine care.
AD
ADPList Mentee
Backend Engineering · Career
Transition
06 — Contact
Let's build something good.
Available for remote full-time, contract, or senior backend/SaaS roles. Based in Dhaka (GMT+6) with overlap for Europe and US East, and a strong record of working with distributed teams.
mohasin2911@gmail.com
+880 1820 937 110
mohasin.dev
github.com/mohasin-dev
linkedin.com/in/mohasin-dev
Best for: Remote Laravel backend, SaaS, AWS, AI integration
Prefer: Remote · Full-time · Contract
Overlap: Europe & US East working hours
Prefer: Remote · Full-time · Contract
Overlap: Europe & US East working hours