WeBuildCrew
📇 B2B · Sales

LeadFlow — Custom CRM System

A custom CRM tailored to a sales team's exact workflow — pipelines, automation, reporting and integrations that off-the-shelf tools couldn't match.

Timeline
6 weeks
Role
Full-stack development
Team
Lead engineer
Year
2025
Next.jsTypeScriptPostgreSQLPrismaRedisTailwind CSS
📇
LeadFlow

+30%

Rep productivity

custom

Workflow fit

1

Source of truth

Client goals

  • Fit the team's exact process
  • Automate repetitive steps
  • Report accurately

Project overview

LeadFlow is a custom CRM shaped around one team's exact sales process — the parts generic tools forced them to work around.

The client problem

Our solution

A tailored CRM with custom pipelines, automation and reporting that mirror the team's real process, integrated with email, calendar and Slack.

What we built

Features

🪜

Custom pipelines

Stages that match the real process.

⚙️

Automation

Tasks and emails on triggers.

📊

Reporting

Forecasts and activity dashboards.

🔌

Integrations

Email, calendar and Slack.

Under the hood

Technical code

lib/auth-guard.ts
TypeScript
import { auth } from "@/lib/auth"; export async function requireMember(orgId: string) {  const session = await auth();  if (!session) throw new Response("Unauthorized", { status: 401 });   const member = await db.membership.findUnique({    where: { userId_orgId: { userId: session.user.id, orgId } },  });  if (!member) throw new Response("Forbidden", { status: 403 });  return { user: session.user, role: member.role };}
app/api/projects/route.ts
TypeScript
import { db } from "@/lib/db"; export async function GET() {  const items = await db.project.findMany({    where: { status: "active" },    select: { id: true, name: true, updatedAt: true },    orderBy: { updatedAt: "desc" },    take: 50,  });  return Response.json(items);}

Integrations

APIs & services

Resend

Automated email sequences.

Slack

Deal notifications.

Google Calendar

Meeting sync.

Process

Development workflow

  1. 1

    Discovery

    Goals, users and success metrics defined on a free call.

  2. 2

    Planning

    Fixed scope, milestone plan and timeline in writing.

  3. 3

    UI/UX design

    Wireframes and a clean, modern design system.

  4. 4

    Backend setup

    Database schema, auth and core services.

  5. 5

    API development

    Typed, documented endpoints and integrations.

  6. 6

    Frontend

    Responsive, accessible UI wired to the API.

  7. 7

    Testing

    QA across devices plus performance & security checks.

  8. 8

    Deployment

    CI/CD, monitoring and a smooth production launch.

  9. 9

    Support

    Ongoing maintenance, updates and new features.

Speed & SEO

Performance & SEO

Performance

  • Server-side & static rendering for instant first paint
  • Image optimisation and lazy loading
  • Code-splitting and route-level prefetching
  • Edge/CDN caching with smart revalidation
  • Green Core Web Vitals (LCP, CLS, INP)
  • Database indexing and query tuning

SEO

  • Per-page metadata, canonical URLs and Open Graph
  • Structured data (JSON-LD) for rich results
  • Programmatic sitemap & robots
  • Semantic, accessible HTML
  • Clean, descriptive slug URLs

Built secure

Security

🔒Session-based auth with role permissions
🔒Server-side authorization on every protected route
🔒Input validation (Zod) on client and server
🔒Secure payments via hosted Checkout (no card data stored)
🔒Rate limiting and abuse protection
🔒Encrypted secrets and least-privilege access

Outcome

Results & impact

+30%

Rep productivity

custom

Workflow fit

1

Source of truth

LeadFlow lifted rep productivity by 30% by fitting the team's exact workflow and becoming their single source of truth.