Store #014 · Dhaka
POS · Live Sales
Store #014 · Dhaka
Today
$8,920
+12%Orders
312
+24Avg / ticket
$28.6
+3%Sync
Live
OK- Order #104212:42 PM · Paid$240.00
- Order #104112:38 PM · Paid$64.50
- Refund12:30 PM-$18.00
10+ Years building software
Joyonto Kumar Sarker
Senior Full-Stack Software Engineer ·Founder & CEO of Deveable
I design and build reliable, high-scale web platforms — from multi-tenant SaaS and ERP systems to payment infrastructure. I care about clean architecture, performance, and software that ships.
export defaultfunction handler() {return <Hero />}
CICDLive
$ npm run build
✓ ready in 4.2s
main · develop
GET/api/v1/posts
200 OK
Database
Cloud
Nuxt
Docker
Laravel
Vue
Redis
MySQL
GitHub
About
A senior engineer who ships reliable software at scale.
With 10+ Years of experience, I build the systems businesses run on — multi-tenant SaaS, ERP, POS, and the APIs that connect them. I care about clean architecture, measurable performance, and software that stays maintainable as it grows.
From first line of code to production rollout, I own the full lifecycle: system design, frontend engineering, reliability, and the small details that separate good software from great software. I work with teams and founders to turn ambitious ideas into dependable products.
- SaaS Platforms
- ERP & Business Software
- POS Systems
- APIs & Integrations
- System Design
- Performance
- Scalability
- Team Leadership
Selected Work
Featured projects
A selection of platforms I've designed and engineered — built for real businesses, at real scale.
Live
Orders · Payouts
Marketplace
Orders · Payouts
GMV
$2.1M
+22%Orders
9,842
+310Publishers
1,206
+44Payouts
On time
100%- TechCrunch-style blogDA 64 · $320Placed
- Finance weeklyDA 51 · $210Pending
- Health magazineDA 48 · $180Placed
Greenfield Int. School
School Management
Greenfield Int. School
Students
1,842
+38Attendance
96.4%
+1.2%Teachers
96
StableFees
92%
Collected- Class 9-A42 students98% att.
- Class 7-B39 students94% att.
- Exam: Mid-termAvg 76%Graded
School Management System
ArchitectEnd-to-end platform for 200+ institutions covering admissions, attendance, exams, and parent communication.
- PHP
- Vue
- MySQL
Impact 150k+ students · 60% less administrative overhead
Run · March 2026
HR & Payroll
Run · March 2026
Employees
1,128
+12Payroll
$486k
On trackLeave
34
PendingCompliance
100%
Pass- Engineering412 staff$210k
- Sales238 staff$118k
- Ops196 staff$88k
HR & Payroll
Tech LeadWorkforce and payroll platform handling complex, region-specific compliance, leave, and automated salary runs.
- Laravel
- Vue
- PostgreSQL
Impact Automated 95% of recurring payroll runs
Warehouse · Central
Inventory
Warehouse · Central
SKUs
12,418
+210In stock
94%
+2%Stockouts
−30%
ImprovedTurnover
6.4x
+0.4- Wireless mouseReorder at 200842
- USB-C hubLow stock64
- Monitor 24"Healthy312
Operations · Finance
ERP Suite
Operations · Finance
MRR
$318k
+6%Open deals
214
+18Invoices
98%
PaidTickets
12
Open- Acme CorpNegotiation$48k
- GlobexProposal$22k
- InitechWon$15k
ERP Suite
ArchitectModular ERP unifying finance, CRM, and operations behind a single, role-aware interface and event bus.
- Laravel
- Vue
- MySQL
- Docker
Impact Consolidated 6 legacy systems into one platform
Performance · Live
Storefront
Performance · Live
Sales
$92.4k
+27%Sessions
61k
+14%AOV
$84
+5%LCP
0.9s
Fast- CheckoutConv 3.2%+0.6%
- SearchConv 2.1%Stable
- CartAbandon 21%−3%
Gateway · Routing
Payments
Gateway · Routing
Volume
$1.4M
+11%Success
99.99%
StableProviders
15
ActiveLatency
120ms
p95- Stripe62% trafficOK
- bKash21% trafficOK
- Dispute1 openReview
Payment Integration Platform
EngineerUnified gateway abstraction across 15+ providers with idempotent transactions, retries, and reconciliation.
- Laravel
- PostgreSQL
- Redis
- AWS
Impact 99.99% successful transaction rate at scale
Toolkit
Skills & technologies
The languages, frameworks, and practices I reach for to build dependable software.
- Laravel
- PHP
- Vue.js
- Nuxt
- JavaScript
- TypeScript
- MySQL
- PostgreSQL
- Redis
- Docker
- Git
- REST API
- GraphQL
- Tailwind CSS
- AWS
- CI/CD
- System Design
- Nginx
- Linux
Career
Experience
A decade of building products, leading teams, and owning systems end to end.
Founder & CEO
Deveable
- Founded a product studio shipping multi-tenant SaaS for retail and business customers.
- Scaled platform to 500+ active locations with 99.98% measured uptime.
- Set the engineering bar: type-safe codebases, CI/CD, and observability by default.
Lead Software Engineer
Enterprise SaaS (Confidential)
- Architected a multi-tenant core serving thousands of concurrent businesses.
- Cut p95 API latency by 3x through caching, query, and queueing improvements.
- Mentored a team of 8 engineers and introduced code review standards.
Senior Full-Stack Engineer
Business Software Group
- Delivered an ERP suite unifying finance, CRM, and inventory operations.
- Built a real-time reporting layer adopted across 200+ client institutions.
- Owned frontend architecture and design-system foundations.
Software Engineer
Tech Startup
- Shipped the company’s first customer-facing web product end to end.
- Established automated testing and deployment pipelines.
Contact
Let's build something great together
I'm open to senior engineering roles, consulting, and ambitious product work. The fastest way to reach me is email.
[email protected]