03Operational core
Epicor ERP
Epicor owns operational rules, transactional workflows and enterprise data.
- Focus
- Operational continuity
- Method
- ERP-owned rules
- Result
- Stable system of record
4+ years · Epicor ERP · C# / .NET · SQL Server · Enterprise Integrations
Software Engineer · Epicor ERP Developer · Enterprise Systems Engineer
Engineering the systems businesses run on.
Software Engineer with 4+ years of experience across Epicor ERP, C#/.NET, SQL Server and enterprise integrations. I connect business workflows, APIs, identity and data into production systems that are easier to operate and extend.
Experience4+ years · enterprise software & Epicor ERP
Core focusERP · backend · integrations · CRM · data
Primary stackEpicor ERP · C# · .NET · SQL Server
01 / Experience4+ years
Enterprise software & Epicor ERP delivery
02 / SpecializationEpicor ERP
Customization, BPMs, BAQs, workflows & REST integrations
03 / Engineering stackC# · .NET 10 · SQL Server
APIs, Xero, Scalar/OpenAPI, identity & production delivery
Epicor ERP Engineering
A live system map—not an infographic.
I treat Epicor as the operational core of a wider enterprise platform: CRM and customer activity enter on one side; secure .NET services, APIs, identity and external applications connect on the other; SQL and reporting sit underneath the flow.
◆ enterprise.system-map / epicor
Live system explorer
Customer / CRM→
Epicor ERP→
.NET / APIs→
Identity / Apps→
SQL / Reporting
Business flowFrom customer demand to ERP operations
Tap a layer once to see what it owns, why it exists and how it connects to the next system.
Business input
Operational core
Connected services
Selected work
Systems, not mockups.
Recent platform, product and enterprise work presented around the engineering responsibility—not invented metrics or template filler.
Architecture / overview
Live system model
Platform control plane
Click a layer to exploreOne control plane keeps identity, tenancy, access, products, integrations and data boundaries understandable.
PlatformControl
→IdentitySSO
→TenantContext
→AppsAccess
Selected detailChoose any architecture card to inspect it without leaving the page.
Live web presentation Click through the internal layers to inspect how identity, tenancy, entitlements, integrations, applications and data fit together.
Centaiva SaaS Foundation
A generic, multi-layer SaaS foundation that separates identity, tenancy, authorization, commercial entitlements, integrations, applications and deployment concerns. It is domain-agnostic, so a CRM, a recruitment platform, an ERP add-on or a commerce product can sit on the same layers and stay understandable as it grows.
- Scope
- Generic · multi-tenant · reusable across CRM, recruitment, ERP & commerce
- Identity
- OIDC · OAuth 2.0 · PKCE · JWT · MFA / passkeys
- Access
- Tenant roles · permissions · delegated access · least privilege
- Commercial
- Products · plans · subscriptions · entitlements · usage limits
- Integrations
- OAuth clients · API keys · webhooks · external services
- Operations
- Shared/dedicated data · regional routing · audit · backups
02
Healthcare recruitment CRM
MedPure Recruitment CRM
CRM for a UK healthcare recruitment business: candidate availability, bookings, CV preparation, payroll and reporting, with real-time updates, scheduled shift reminders and two-factor sign-in.
Angular 18 · ASP.NET Core (.NET 10) · EF Core · Dapper · SQL Server · SignalR · JWT + 2FA03
UK-facing accounting integration
Xero Accounting API
Xero accounting integration through an authenticated .NET service boundary, including Accounts / chart-of-accounts retrieval for finance-facing business workflows.
Xero Accounting API · OAuth 2.0 · C#/.NET · GET Accounts · integration services04
AI-enabled banking
BankMind AI
Contributed to an AI-driven banking product, including backend performance work for large datasets and a React + ASP.NET Core application experience.
ASP.NET Core · React · AI product · large datasets05
Enterprise real estate
Bahria Town Design Wing
.NET 9 backend work across SSO, plot workflows, legacy data, SQL services, modular architecture, ownership/reporting and VM deployment.
.NET 9 · SSO · SQL Server · Clean Architecture · VM06
Cloud / infrastructure
Eclipse Cloud Migration
Cloud-migration work spanning application readiness, database/server setup, environment configuration and production transition support.
Cloud migration · server setup · database setup · deployment07
Application delivery
Evertime
Application delivery across backend services, API integration, database/environment setup and production deployment support.
.NET · APIs · SQL · environments · deploymentExperience
4+ years across Epicor ERP, backend platforms and enterprise operations.
Hands-on professional experience from Epicor customization and business workflows through C#/.NET services, SQL, CRM integrations, identity and production environments.
Every role below matches my CV word for word.
Founder & Software Architect
Centaiva · Remote
Current
SaaS platform foundation: identity, tenancy, authorization, commercial entitlements, integrations and deployment boundaries.
- Designed a multi-layer SaaS platform separating identity, tenancy, authorization, entitlements, integrations and data/deployment concerns
- Implemented OIDC / OAuth 2.0 with PKCE, JWT and MFA/passkeys, with tenant-scoped roles, permissions and delegated access
- Modelled products, plans, subscriptions, entitlements and usage limits as a commercial layer separate from application code
- ASP.NET Core
- OIDC
- OAuth 2.0
- Multi-tenancy
- SQL Server
Software Developer
GMP · Lahore
Current
CRM and operations platform: Angular 16 front end and a layered ASP.NET Core API covering sales, billing, invoicing, operations and reporting.
- Develop GMP's CRM and operations platform with Angular 16 and a layered ASP.NET Core Web API (data-access, common and model layers) on Entity Framework Core and SQL Server
- Build modules for sales, billing, invoicing, operations, reports, dashboards, users and roles, and global search, including radius-based location search
- Implement ASP.NET Core Identity with JWT authentication, real-time updates with SignalR and SMS notifications through the ClickSend API
- Add Google Gemini AI features, Excel exports and chart dashboards, shipped through separate local, QA and production environments
- Angular
- ASP.NET Core
- Entity Framework Core
- SQL Server
- SignalR
- JWT
ERP Developer (Epicor)
Kairós Solutions · Remote · Australia
Current
Epicor backend customization, third-party integration, WordPress automation, WooCommerce catalog/authentication/order workflows and cross-business-unit ERP integration.
- Customize and extend Epicor ERP backends (BPMs, BAQs, business logic) for manufacturing, distribution and food-service clients in Australia and Singapore
- Integrate Epicor with third-party systems through REST APIs to automate workflows across multiple business units
- Build WooCommerce integrations for product catalogues, customer authentication and order processing, kept in sync with ERP data
- Automate WordPress content and operations scripts to remove manual admin work
- Epicor ERP
- C#
- SQL Server
- REST APIs
- WooCommerce
- WordPress
Software Developer
Bahria Town · Lahore
Current
.NET 9 backend systems, centralized SSO, third-party integration, plot merging, security workflows, large legacy-data processing, SQL services, modular architecture and virtual-machine deployment.
- Build .NET 9 backend systems for a large-scale real-estate platform using Clean Architecture
- Implemented Single Sign-On for secure, centralized authentication across system modules
- Developed plot merging, data filtering and cyclic security workflows, plus modular services for plot management, ownership tracking and reporting
- Processed large volumes of legacy data for the Design Wing and built SQL-based services; deploy to virtual machines
- Integrated third-party tools (e.g. Print Save Track) with international teams
- .NET 9
- SSO
- SQL Server
- Clean Architecture
- VMs
Software Developer
Dukanlay Solutions · Lahore
Scalable ASP.NET Core, Entity Framework and SQL Server applications, responsive Razor Pages and React + ASP.NET Core interfaces delivered with cross-functional teams.
- Led development and maintenance of ASP.NET Core web applications with Entity Framework and SQL Server
- Built responsive Razor Pages and React front ends that improved platform usability
- Designed data-access layers with the Repository and Unit of Work patterns and dependency injection
- Delivered with a cross-functional Agile team, from requirements to release; contributed to BankMind AI
- ASP.NET Core
- Entity Framework
- SQL Server
- Razor Pages
- React
- Agile
Freelance Developer
Online projects · Remote
Web applications and small software solutions using .NET, C#, Angular and SQL.
- Built web applications and small software solutions with .NET, C#, Angular and SQL for remote clients
- .NET
- C#
- Angular
- SQL
Capabilities
Where I can take ownership.
A practical engineering stack based on the work in my CV—not skill percentages.
01
Backend & APIs
C# · ASP.NET Core · .NET 9/10 · .NET 11 Preview · REST · OpenAPI · Scalar · SignalR · WCF
Application logic, typed services, modern API surfaces02
Epicor ERP engineering
Epicor ERP · BPMs · BAQs · business logic · REST integrations · workflow automation
Primary specialization · ERP customization & connected business systems03
SQL Server & data operations
SQL Server · setup/configuration · backup & restore plans · maintenance/jobs · Entity Framework · legacy data
Data services, migration support, recovery-minded operations04
Identity & security
SSO · OAuth 2.0 · OpenID Connect · PKCE · JWT · RBAC
Authentication, tenant-aware authorization05
Infrastructure & delivery
Windows Server · IIS · VMs · Docker · Kubernetes · CI/CD · Azure DevOps · Git · TFS
Environment setup, deployment, database operations, production support06
Frontend & product interfaces
React · Angular · JavaScript · HTML · CSS · Razor Pages · Blazor
Responsive interfaces connected to enterprise backend systems07
Integrations & tooling
Xero Accounting API · WooCommerce · WordPress · Microsoft Dynamics · OpenAI API · Claude-assisted coding · Postman
Finance and commerce integrations, AI-enabled workflowsCurrent engineering track · Sep 2026
Modern stack, with production boundaries kept clear.
I use stable platform releases for production work, keep preview technology explicitly separated, and document external integrations so clients can see where data enters, how it is validated and what owns it next.
01 / Finance integrationUK-facing
Xero Accounting API
Accounting integration through OAuth 2.0 and a controlled .NET service boundary. The current portfolio example focuses on GET Accounts / chart-of-accounts retrieval rather than claiming a generic “Xero expert” badge.
Xero→.NET service→business workflow
Open Xero API explorer ↗ (opens a preview of Xero Accounting API here; it can also open in a new tab)
02 / .NET platformCurrent track
.NET 10 LTS + .NET 11 Preview
Production-oriented work can target the supported .NET 10 LTS line, while .NET 11 preview features stay in evaluation until they are appropriate for a real deployment.
.NET 10LTS · current stable line
.NET 11Preview 7 · evaluation only
03 / Data operationsProduction support
SQL Server setup & recovery planning
Database work includes environment setup, configuration, scheduled backup plans and restore-minded operating procedures—not only writing application queries.
Instance / environment setupFull · differential · log backup planningRestore checks & recovery readinessMaintenance jobs & deployment support
04 / AI-assisted engineeringApplied tooling
OpenAI + Claude-assisted workflows
OpenAI API integration where the product needs it, plus Claude/coding-agent workflows for prototyping, refactoring and implementation acceleration. Production changes still go through normal review, testing and security checks.
PositioningAI-assisted engineering, not an “AI template” portfolio.
Additional project work
ERP, CRM, finance, commerce, manufacturing and operations.
Galvin · AustraliaBackend optimization & product UI (opens a preview of Galvin Engineering here; it can also open in a new tab)
Caterlink · AustraliaWooCommerce & order automation (opens a preview of Caterlink here; it can also open in a new tab)
C & W ServicesInternal workflow applications (opens a preview of C & W Services here; it can also open in a new tab)
United Fasteners · AustraliaE-commerce integration & product automation (opens a preview of United Fasteners here; it can also open in a new tab)
MIT Semiconductor · SingaporeERP customization & systems integration (opens a preview of MIT Semiconductor here; it can also open in a new tab)
Orbital UAV · AustraliaBackend & materials-planning systems (opens a preview of Orbital UAV here; it can also open in a new tab)
CRM ProjectLead management, communication & analytics dashboardsPrivate case
Epicor ERP DeliveryBackend, integrations, commerce & automationExperience →
Client conversation
Start with the business problem. I’ll map the technical path.
I translate ERP, backend and integration problems into a system plan a technical team and a business stakeholder can both understand.
“Our ERP is isolated.”
Connect Epicor with CRM, commerce, SaaS or external services without turning the ERP into a fragile point-to-point hub.
Outcome → controlled integration flow“Every app has separate access logic.”
Design SSO, roles and tenant-aware authorization so users move across business applications with consistent security boundaries.
Outcome → one understandable access model“The system works, but it is hard to change.”
Review .NET, SQL, API and deployment boundaries to reduce coupling and make production changes safer to reason about.
Outcome → clearer path to modernizationHow I work
From business problem to production system.
A client should be able to see what happens next. I reduce ambiguity first, then make the system boundary, implementation path and production checks explicit.
Discover
Clarify the business workflow, pain point, users, constraints and what success needs to look like.
Map
Identify the system of record, data ownership, integration boundary, identity model and operational risks.
Build
Implement the Epicor, .NET, API, SQL or integration change behind clear contracts and controlled responsibilities.
Prove & operate
Test the critical flow, validate deployment, restore/rollback readiness and leave the next owner with an understandable system.
Business requirement → system boundary → implementation → production confidence
Technical advisory
Get clarity before you spend weeks building the wrong thing.
Use a focused session for Epicor/ERP integration, Xero/accounting APIs, modern .NET architecture, SSO, SQL Server setup/backup planning, API documentation or a production issue. The goal is a decision and next steps—not a sales deck.
Remote worldwideMeet / Teams / ZoomFree discoveryPaid deep-dives
Start here
Free 15-minute discovery call
Quickly check fit, scope and the best next step. No payment and no obligation.
Or connect on WhatsApp →Choose the conversation
Start free for fit and scope, or choose a focused paid technical session.
Pick a time
Use the live scheduler when connected, or send a booking request from the portfolio.
Leave with a next move
We finish with a clear recommendation, risks and practical implementation steps.
01
Technical direction
30 min
One focused architecture, API, SQL, deployment or debugging question.
- Problem framing
- Recommended direction
- Immediate next steps
02
ERP / architecture working session
60 min
For Epicor/Xero integration, SSO, system boundaries, .NET modernization, migration or implementation decisions.
- Architecture walkthrough
- Risk & dependency review
- Concrete implementation path
03
Deep-dive review
90 min
Pre-read material plus a detailed review for complex architecture, migration or production systems.
- Pre-read context
- Detailed technical review
- Written summary available
USD pricing · free call requires no payment · paid sessions can use a connected booking/payment provider or be confirmed manually · processor fees may apply.
Schedule a call
Show me the system. I’ll help you find the next move.
For a quick fit check, start with the free 15-minute call. For a technical problem, choose a paid session and send the context before we meet.
Contact