Nexrena Platform — Full-Stack Agency Operations System

Nexrena is my client studio for B2B web design and SEO. Running it on scattered SaaS subscriptions — CRM here, invoicing there, project tracking in a third tool — created friction on every client handoff. I built a single platform to own the full delivery loop.

The problem

Agency operations were spread across:

• CRM and lead tracking in one product.
• Project management and task status in another.
• Invoicing, subscriptions, and payment follow-up in a third.
• Client communication and file handoffs in ad hoc channels.

Every new client meant context switching across tools, manual reconciliation, and no single source of truth for delivery status.

My role

I am the sole engineer — I designed, built, and operate the platform in daily production use.

What I built

Next.js client portal and admin UI

• Client-facing views for project status, deliverables, and service upgrades.
• Internal admin for leads, engagements, and delivery tracking.
• Authentication and role separation between client and operator workflows.

Express API layer

• REST endpoints for CRM records, project milestones, invoicing events, and subscription state.
• Validation and error handling aligned to production client data — not demo fixtures.
• Heroku-deployed backend with Postgres persistence.

PostgreSQL data model (Prisma)

• Unified schema for contacts, projects, invoices, subscriptions, and service catalog items.
• Relational integrity across entities that previously lived in separate SaaS silos.
• Migration workflow for schema changes without downtime on live client data.

Integrated client workflows

• Service upgrade paths (pages, SEO, forms, automations) connected to the same project record.
• API integrations for client delivery — intake forms, status updates, and operational dashboards.
• Replaces the need for separate CRM, PM, and billing subscriptions for standard agency operations.

Outcomes

Result	Detail
Tool consolidation	CRM, PM, invoicing, and client portal in one system
Daily use	Platform runs live client delivery today
Cost	Eliminated multiple SaaS seats for core ops
Extensibility	New service types added as schema + UI modules, not new vendors

This is the same engineering muscle applied internally that I bring to client migrations and commerce builds — own the data model, ship the API, and keep it running in production.

What this demonstrates

• Full-stack ownership from schema design through deployed UI.
• Building internal platforms that replace SaaS sprawl — relevant for product engineering and platform teams.
• Shipping and operating software you depend on daily, not portfolio-only demos.