01 / Billing systems
Stripe billing, subscriptions and payment workflows
I build subscription flows, usage-based billing, customer portals, webhook handling, failed payment recovery and internal billing tools that reduce manual work.
Contract engineering for SaaS teams
I help SaaS teams build billing, compliance and product systems without adding management overhead.
I am a founder-minded full stack engineer for teams that need Stripe billing, PCI/tokenization flows, APIs, dashboards and AWS-backed production delivery. You get senior execution, clear communication and code your team can keep owning.
React and SaaS dashboards
Stripe billing systems
PCI, VGS and tokenization
AWS production deployment
What I help with
Revenue-critical engineering for serious SaaS teams.
I am most useful when the work touches revenue, sensitive data, customer operations or infrastructure. The kind of work where vague implementation and weak handoff create real business drag.
02 / Compliance flows
PCI-aware payment systems and tokenization
I help teams handle sensitive payment flows with VGS, vaulting patterns, tokenized card data and practical implementation choices that keep compliance scope under control.
03 / Product systems
Dashboards, APIs and production delivery
I ship product surfaces your customers and internal teams use every day: React dashboards, API layers, multi-tenant workflows, RBAC and AWS deployment paths.
04 / Launch execution
Product launches, migrations and urgent delivery
I help teams turn stalled product work into scoped releases, modernize fragile flows and move important systems into production with clear ownership.
Selected work
Practical systems, shipped cleanly.
A concise view of the project categories I am trusted with. No inflated logos, no vague claims: just the kind of production work SaaS teams ask me to own.
Usage-based Stripe billing system
A SaaS team needed to move away from manual monthly invoicing without breaking customer operations or creating finance support debt.
Challenge
Manual billing created delays, support load and limited pricing flexibility.
Solution
Built metering, webhooks, portal flows and billing state handling.
Outcome
Cleaner subscription operations with a foundation for usage-based plans.
4 wk
Delivery sprint
PCI-aware payment vault implementation
A healthcare SaaS platform needed payment collection without increasing the amount of sensitive card data handled by its own application.
Challenge
Existing payment flows exposed too much compliance and maintenance risk.
Solution
Added VGS tokenization, Laravel API updates and safer data boundaries.
Outcome
PCI-aware payment handling with reduced raw-card exposure.
SAQ-A
Scope target
Multi-tenant dashboard and API layer
An agency needed senior overflow help on a SaaS build where the internal team still had to own and maintain the result after delivery.
Challenge
Tenant workflows, permissions and delivery pressure had to stay aligned.
Solution
Built dashboard flows, RBAC, tenant-aware APIs and practical docs.
Outcome
The agency could hand off a cleaner product surface with less rework.
6 wk
Build cycle
Currently building
ThreatIP is proof that I ship real SaaS products, not just isolated tickets.
ThreatIP is a live threat intelligence SaaS platform I am building end to end. It gives prospects a useful signal: I understand what it means to design, deploy, operate and improve a production product where reliability, security and usability all matter.
That founder context changes how I work with clients. I think about maintainability, onboarding, billing, support burden, infrastructure and the next engineer who has to read the code.
Visit ThreatIP.ioThreatIP
Threat intelligence SaaS platform
Execution
Full-stack product design, frontend, backend and deployment
Domain
Cybersecurity, threat data and operational workflows
Infrastructure
Production environment, application monitoring and releases
Credibility
Founder discipline applied to client engineering work
How I work
Calm execution, visible progress, clean handoff.
I work best with teams that want a capable engineer to own a defined outcome, communicate clearly and reduce the number of things founders or CTOs need to chase.
Clarify the outcome
We define the business goal, system constraints, success criteria and what should be deliberately left out of scope.
Plan the build
You get a clear implementation path, timeline, risk notes and communication rhythm before development starts.
Ship in visible increments
I work inside your tools, send concise progress updates and raise decisions early instead of hiding complexity.
Hand off cleanly
The final delivery includes maintainable code, implementation notes and enough context for your team to keep moving.
Best fit
Useful for teams that need ownership, not hand-holding.
I take on a limited number of projects so the work stays focused. The best engagements usually have a defined problem, a real business reason and a team that values clear execution.
Strong fit
- US SaaS founder, CTO or technical co-founder
- Billing, payments, compliance, dashboards or API work
- Agency with serious overflow implementation needs
- Defined scope, realistic budget and direct communication
- Team wants contract execution without adding management load
Less likely to fit
- Price is the main decision factor
- The scope is still too undefined to estimate responsibly
- Equity-only or speculative arrangements
- You need on-site US presence
- You need a project manager more than an engineer
Proof and trust
Real signals, handled plainly.
Trust on this site is intentionally practical: verified client feedback, public code presence, a live product and a work style designed for clean delivery.
5/5
"Irfan quickly implemented the given PHP task and perfectly adjusted to our development workflow with Docker and GitHub Pull Requests."
Public engineering presence
You can review my public work and development footprint on GitHub.
Clean delivery promise
I communicate progress clearly, document important implementation decisions and leave code in a state another engineer can own.
Start here
Have a SaaS system that needs a serious builder?
Send the context or book a short call. I will tell you quickly if I can help, what I would change first and what a clean engagement could look like.