Amin Tizdastazar

Amin Tizdastazar

Staff Backend Engineer · Toronto

Production backend systems with clear system-of-record boundaries.

I build and modernize backend systems across multi-tenant architecture, integrations, payments, inventory, accounting workflows, system-of-record design, and reliability-critical operations.

I optimize for reliability, clear architecture boundaries, auditability, and delivery that stays sustainable as systems scale toward AI-assisted workflows.

Connect on LinkedInContact
Amin Tizdastazar, Staff Backend Engineer

Core focus

15+ years

software engineering experience

SaaS + commerce

production platform background

Thousands

of merchants supported through backend systems

Node.js · TypeScript · Next.js

React, PostgreSQL, Azure, plus AWS, GCP, Docker, and integrations

Selected systems work

Where architecture, integrations, and reliability meet.

FoundationEarly-stage SaaS

EventAgent

Production-ready event coordination SaaS (EventAgent) in pilot with real users and multi-stakeholder event workflows.

Designed backend architecture, domain models, REST APIs, vendor lifecycle workflows, messaging, approvals, audit-aware operations, and system-of-record execution paths. Full stack delivery with React, Next.js, Node.js, TypeScript, PostgreSQL on Azure.

Created a pragmatic foundation that can evolve from a clear monolith toward service-based boundaries, AI-assisted proposals, and controlled workflow automation as usage grows.

EventAgentMulti-tenant SaaSNode.jsTypeScriptReactNext.jsPostgreSQLAzureREST APIsSystem of recordApproval-aware workflows
ReliabilityCommerce platform

TAKU POS / ERP backend systems

Retail-tech platform serving thousands of merchants across POS, inventory, checkout, tax, integrations, and accounting workflows.

Owned backend architecture, data integrity, sales tax / VAT logic, service boundaries, performance improvements, and post-acquisition platform stability.

Improved system response times by 20% and strengthened reliability while balancing delivery pressure and technical debt.

POS / ERPSales tax / VATPlatform modernizationReliability
IntegrationBusiness-critical integrations

Payments, accounting, and inventory workflows

Integration-heavy systems connecting retail operations with payments, tax-sensitive checkout flows, Shopify, Magento, QuickBooks, Sage, and inventory data.

Built and refined APIs, asynchronous workflows, idempotent processing patterns, and operational services for high-value transactions and downstream reporting.

Expanded platform capability while improving transaction workflows, merchant adoption, and operational reliability.

PaymentsAccountingInventoryTax logicIntegrations
OperationsOperational systems

Kiosk and cloud-printing services

Retail environments that needed reliable operational services beyond the core web application.

Developed backend services and deployment paths for kiosk and cloud-printing capabilities tied to real store workflows.

Supported new product capabilities and improved operational efficiency for retail clients.

Cloud printingKioskRetail operationsServices

Experience

Backend systems experience across SaaS, retail-tech, and operational platforms.

Staff Backend Engineer / Contract

ProVia Hub

2024 - Present

Built and launched EventAgent, a production-ready event coordination SaaS platform on Node.js, TypeScript, React, Next.js, and PostgreSQL on Azure, with backend architecture, data modeling, APIs, and operational workflows.

Staff Software Engineer

TAKU Canada / TAKU Labs

2018 - 2024

Led backend architecture, modernization, integrations, reliability, and platform quality across commerce, omnichannel POS, ERP, payments, sales tax / VAT, and inventory systems.

Senior Software Engineer

ACE POS Solutions

2015 - 2018

Modernized legacy backend components and integrated POS systems with eCommerce and accounting platforms.

Software Engineer / Technical Lead

Retail software company

2008 - 2015

Built POS, ERP, inventory, and accounting systems used by 2,000+ clients across retail and service industries.

Earlier product engineering

Retail and hospitality software from earlier in my career.

Highlights drawn from my LinkedIn projects. Long-form context (skill breakdowns, media, endorsements) lives on LinkedIn.

Product depth

Restaurant ordering (Android)

Analyzed, designed, and implemented a restaurant ordering app on Android tablets. Orders flowed over Wi‑Fi from devices directly to MS SQL Server, aligning front-of-house service with billing and kitchen operations.

JavaAndroidWi‑FiMS SQL ServerEclipse
Product depth

Restaurant customer call system

Built a caller system that announced guest bill numbers over speakers and displayed queue information on TVs, shortening wait times and improving throughput at busy locations.

Retail operationsIn-venue UX
Product depth

POS systems

Led analysis, design, and delivery for point-of-sale products across hospitality and retail, for example restaurant, catering, self-serve kiosk, call-centre POS, banquet hall, retail shops, salons, and billiard clubs. Maintained each line for years alongside new releases, operational feedback, and tax-sensitive checkout requirements.

  • Restaurant
  • Catering
  • Self-serve kiosk
  • Restaurant call centre
  • Banquet hall
  • Retail shops
  • Salon
  • Billiard clubs
POSHospitalityRetailSales tax / VATLifecycle ownership
Product depth

Accounting solutions for small businesses

Designed and shipped accounting, sales tax / VAT, inventory, and cash-flow tooling for hundreds of small businesses, then maintained and iterated for roughly a decade as regulations and bookkeeping practices shifted.

AccountingSales tax / VATInventorySMB operations
Product depth

Restaurant ordering (Windows Mobile)

Delivered an earlier-generation Wi‑Fi ordering client on Windows Mobile using Visual Studio and C# / .NET, streaming orders straight into SQL Server 2005 ahead of later Android modernization.

C#.NETWindows MobileSQL Server

Technical foundation

Backend and platform skills grouped by the systems they support.

System shape

Architecture and platforms

  • Multi-tenant SaaS
  • System-of-record design
  • Service boundaries
  • Monolith modernization
  • Distributed systems
Data movement

APIs and data

  • Node.js
  • TypeScript
  • React
  • Next.js
  • REST APIs
  • PostgreSQL
  • SQL / MySQL
  • Data modeling
  • System-of-record design
  • Audit boundaries
Business workflows

Integrations

  • Payments
  • Sales tax / VAT logic
  • Accounting workflows
  • Inventory systems
  • Shopify
  • Magento
  • QuickBooks
  • Sage
Operational quality

Cloud and delivery

  • AWS
  • GCP
  • Azure
  • Docker
  • CI/CD
  • Monitoring
  • Approval / audit boundaries
  • AI-ready backend architecture

Contact

Let's connect.

For backend engineering, architecture, or introductions, use LinkedIn or the contact page. Either works.

Connect on LinkedInContact