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Custom Internal Tools &
Client Portals in 3–4 Weeks
Escape brittle Google Sheets, chaotic email attachments, and punitive $50/user/mo Retool bills. We engineer secure, role-gated internal software and self-service customer portals with Supabase and Nuxt 3 for a flat $5,000 fee.
Trusted by operations leads & founders from
Why Operations Teams Get Trapped Between Chaos & Extortionate SaaS
Trap 1: The "Spreadsheet & Zapier" Band-Aid
Fragile, Leaky & Unscalable
- ✗Zero Granular Access Control: One misconfigured share link exposes client PII, confidential margin data, or internal formulas to the entire company or external contractors.
- ✗Silent Formula Overwrites: A single accidental backspace or paste corrupts calculation rows across historical projects with zero rollback audit trails.
- ✗Unprofessional Client Experience: Sending clients Google Drive folders and spreadsheet tabs makes a $20k B2B service feel like a disorganized side project.
- ✗Broken Zapier/Make Chains: Webhooks time out, duplicate rows get created, and staff spend 10 hours a week manually reconciling errors.
The End Result
Data breaches waiting to happen, duplicated staff work, and constant operational anxiety.
Trap 2: The Retool & Enterprise No-Code Tax
$50–$100/User/Month Perpetual Rent
- ✗Per-Seat Hostage Pricing: Low-code platforms look cheap until you have 15 internal employees and 40 external clients — suddenly costing $2,000+/mo in recurring licenses.
- ✗Total Vendor Lock-In: You cannot export production code or deploy to your own servers. If you stop paying their monthly ransom, your operational pipeline vanishes.
- ✗Rigid UI & Clunky Mobile Experience: Drag-and-drop builders load sluggishly on mobile devices and look like generic developer dashboards rather than your premium company brand.
- ✗Traditional Agency Quote Alternative: Requesting custom software from an agency triggers a 5-month, $45,000 estimate bloated with junior developer billable hours.
The End Result
Exploding operational overhead without ever actually owning your company's core software assets.
Production-Grade Custom Portals for a One-Time $5,000 Flat Fee
We build custom web software tailored exactly to your company's unique workflow. You own 100% of the code and database, pay zero per-seat licensing fees, and launch in 3–4 weeks.
Bank-Grade Role Security (RLS)
Engineered with PostgreSQL Row-Level Security on Supabase. Internal staff see their authorized tier, while external clients can only view and mutate their own project deliverables and invoices.
Sub-100ms Response Speed
Built with Nuxt 3 and Tailwind CSS. No bloated no-code iframe rendering. Your team and clients get instant search, keyboard shortcuts, clean data tables, and snappy document previews on mobile and desktop.
Zero Per-Seat Fees Forever
Invite 10, 100, or 1,000 team members and clients without your software bill increasing by a single penny. You deploy to serverless infrastructure (Netlify + Supabase) running on $15–$25/month baselines.
4 Internal Tool & Portal Systems We Build Regularly
Every build is customized to your exact terminology and data fields, replacing messy manual operations with automated, polished software.
1. Client Deliverables & Project Portals
For Agencies, Consultancies & Professional Services
Replace endless email threads and shared Dropbox links with a branded, secure self-service portal. Clients log in with magic links or passwords to track project milestones, download approved assets, sign off on deliverables, and upload required documents.
2. Operations & Dispatch Management
For Logistics, Wholesale, Rental & Service Operators
Centralize fragmented order pipelines, dispatch scheduling, and status tracking into a single command center. Staff can filter active jobs by status, reassign crew or contractors, log notes, and update client statuses with one-click actions.
3. Field Operations & Mobile Audit Tools
For Facilities, Construction, Property & Field Staff
Equip on-site technicians and inspectors with a blazing-fast, mobile-friendly web application. Field staff complete guided step-by-step checklists, snap and upload site photos directly from their phone camera, and auto-generate client-ready inspection PDFs.
4. B2B Vendor & Supplier Extranets
For Manufacturers, Distributors & Franchise Networks
Eliminate manual purchase order emails and pricing discrepancies. Give external partners or suppliers a private portal to submit inventory updates, view approved pricing tiers, track invoice payments, and download compliance documentation.
Enterprise-Grade Stack. Zero Proprietary Lock-In.
We build your software on modern, open-source standards so you retain 100% control of your database, infrastructure, and source code.
Supabase PostgreSQL + Row-Level Security
Your data is stored in standard relational PostgreSQL, not a proprietary no-code black box. We implement database-level Row Level Security (RLS) policies: an external client can physically never access records belonging to another account, even if they query the API directly.
- ✓ Multi-role RBAC (Admin, Team Member, Client, Inspector)
- ✓ Real-time WebSocket table sync for collaborative dispatch
- ✓ S3-compatible encrypted document & media storage
Nuxt 3 SSR & Reactive Design
Blazingly fast server-side rendered interfaces designed for operational productivity. Your team gets rapid search filters, instant inline editing, exportable tables, and a responsive mobile layout that works flawlessly on job sites or iPads.
- ✓ Sub-100ms page transitions with zero drag-and-drop bloat
- ✓ Instant search, multi-column sorting, and pagination
- ✓ Custom branded UI matching your company's design identity
| Dimension | Tessellate Labs Custom Portal | Retool / Low-Code | Traditional Dev Agency |
|---|---|---|---|
| Pricing Model | $5,000 Flat One-Time | $50–$100/user/mo forever | $35,000–$60,000+ hourly |
| Delivery SLA | 3 to 4 Weeks | 2 to 6 Weeks (DIY setup) | 4 to 6 Months |
| Code & DB Ownership | 100% Yours (Git + PostgreSQL) | Locked inside vendor platform | Yours (after final invoice) |
| Monthly Running Costs | ~$15–$25/month (Netlify/Supabase) | $500–$2,500/mo (Seat tax) | High AWS/cloud maintenance |
| External Client Access | Unlimited clients included | Expensive external user tiers | Custom build required |
What We Ship in Your $5,000 Sprint
Every deliverable is verified, production-tested, and built for your operations team to rely on from Day 1.
1. Multi-Role Auth & Invites
Supabase email/password or magic links. Role-based permission trees separating internal administrators, field operators, and external clients.
2. Central Command Dashboard
Real-time operational views, active project pipelines, order status tags, quick stats, and multi-column sorting and search.
3. File & Document Storage
Secure S3-compatible asset storage on Supabase. Drag-and-drop client uploads, PDF previews, and image compression with strict access gates.
4. Automated Notifications
Transactional email notifications via Resend when new orders arrive, milestones are marked complete, or client approvals are required.
5. Third-Party Integrations
Webhook connections to your existing tools: Slack alerts, Stripe billing hooks, Google Sheets sync, or accounting exports.
6. Live Deploy & Repo Handoff
Automated CI/CD deployment on Netlify with your custom domain and SSL, plus full GitHub repository transfer and architecture docs.
How We Guarantee 3–4 Week Delivery
We ruthlessly cut non-essential bloat (like custom drag-and-drop dashboard builders or complex charting libraries) so your software launches with rock-solid data integrity, reliable security policies, and intuitive workflows on Day 1.
Engineered by Tudor Barbu
Founder & Lead Software Engineer
"Internal tools fail when agencies deploy junior developers who don't understand the nuance of your business workflow. When you work with Tessellate Labs, you deal directly with me. I translate your spreadsheets and manual bottlenecks into clean relational database models, write strict PostgreSQL security policies, and build intuitive interfaces your team actually loves using."
The 4-Week Internal Tool Sprint
No endless scrum ceremonies. A structured 4-week build taking your operations from chaotic spreadsheets to a live production application.
Week 1: Schema & Flows
We audit your current spreadsheets and manual steps. We model relational PostgreSQL tables and define exact user roles and permission boundaries.
Week 2: Role Auth & CRUD
We implement Supabase auth and write PostgreSQL Row-Level Security policies. We build core data tables, CRUD forms, and status toggles.
Week 3: Portals & Alerts
We build client-facing self-service views, secure file upload pipelines, automated email alerts (Resend), and third-party webhooks.
Week 4: QA & Production
Strict security testing, permission boundary validation, mobile browser testing, custom domain SSL setup, and full code handoff.
Frequently Asked Questions
Clear, transparent answers about our custom internal tools and client portal sprints.
Book Your Fixed $5,000 Internal Tool Sprint
Tell us about your current manual bottlenecks, spreadsheets, or client workflow. We review your requirements and reply with an honest architectural blueprint within 48 hours.