Custom Business SystemsThat Replace Manual Work.
I'm Jericho Sonon. I design and deploy software end-to-end: custom POS platforms, AI workflows, and web applications that replace the paper logbooks and messy spreadsheets your business currently runs on.
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Production Systems
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Commercial Deployments
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Active Users
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Code Ownership
Trusted By & Active Deployments
Live production systems engineered for commercial operators, multi-branch clubs & students
Playground Fitness
Front-desk operations, automated QR check-in kiosks, and membership subscription tracking.
TrainFitness (Kamuning & Visayas)
Multi-location branch administration, subscription renewals, and front-desk collection audit trails.
BarangayConnect Communities
Online clearance processing, automated incident ticketing, and community appointment scheduling.
Civil Service Exam Reviewers
Nationwide examinee test simulator with diagnostic prediction and intelligent progress tracking.
Selected Production Systems
primereviewerph.online
Prime Reviewer PH
Civil Service Review StudentsLaundry POS
Commercial Laundromat HubsMochiMoney
Personal Finance UsersFitLocker
Playground Fitness & TrainFitness (Kamuning & Visayas)BarangayConnect
Local Barangay Communities & ResidentsSolar Spartz Industries
Solar Spartz Energy CorporationOpticBooth
Event Photobooth Operators & Experiential AgenciesKeebs
Mechanical Keyboard Enthusiasts & Power TypistsLuckyBingo
Community & Event OrganizationsQOTA
AI Engineers & Antigravity/Claude Power UsersAbout & How I Work
I turn businesses that run on paper logbooks and messy spreadsheets into fast, reliable custom software their staff and customers actually enjoy using.
How My Custom Systems Run in Production
1. Touch POS & Client Web Apps
Offline-first cashier UI, QR scanner, and self-service portals with zero input lag.
2. Automated Cloud Core & APIs
Atomic transactions, row-level security, automated receipt generation, and real-time syncing.
3. Real-Time Operations Hub
Multi-branch live revenue metrics, inventory alerts, and instant audit trails for owners.
Jericho Sonon
AvailableSoftware & Solutions Engineer
I am an independent product engineer who designs and deploys software end-to-end: interface UX, data schema, cloud infrastructure, AI agents, and checkout terminals.
I specialize in replacing fragile paper logbooks and disconnected tools with bespoke, ultra-fast web platforms and intelligent automated workflows built around actual staff and customer operations.
Operating Standard
“Jericho eliminated our front-desk logbook bottlenecks and synced our member records across locations. The QR kiosk check-in has run with zero downtime since day one.”
Claire Castro
Operations & Front Desk, Playground Fitness
Production Standards
Systems I Deliver & Core Capabilities
Custom Business Systems & POS
Replace Spreadsheets & Paper Logbooks
Tailored Point of Sale, inventory management, multi-branch revenue analytics, and staff operation portals designed around how your business actually runs.
Production Deliverables
Target Business Niches
SaaS Platforms & Web Applications
From Problem to Production in Weeks
End-to-end design, frontend UX, backend APIs, auth, database, and cloud deployment. Fast, secure web applications ready for real paying customers.
Production Deliverables
Target Business Niches
Workflow Automation & AI Systems
Intelligent Workflows That Save Hours
Automated document processing, OCR scanning pipelines, appointment queues, and custom business logic that eliminate repetitive manual data entry.
Production Deliverables
Target Business Niches
Who I Build For
Gyms & Fitness Clubs
Memberships, POS & Front-Desk Kiosks
Sub-second QR athlete check-ins, automated subscription renewals, staff PIN security, and multi-branch revenue tracking.
Laundromats & Commercial Hubs
Job Queues & Thermal QR Receipts
Touch-friendly POS order entry, digital claim ticket lookup, thermal receipt generation, and end-of-day revenue reconciliation.
EdTech & Review Centers
Timed Testing & Diagnostics
Interactive licensure simulation engines, timed mock examinations, subject-specific weakness tracking, and student progress dashboards.
Technical Stack & Architecture
I pick battle-tested tools with proven production stability, strong type safety, and active ecosystems. Every technology in this stack has been deployed in real client applications.
Frontend & UI Architecture
6 core technologies
Backend Services & APIs
5 core technologies
AI Agents, LLMs & Telemetry
4 core technologies
Data & Real-Time Storage
4 core technologies
Cloud, Containers & Deployment
4 core technologies
Experience & Track Record
Software & Solutions Engineer
Architecting custom business platforms, POS systems, multi-branch operations dashboards, and web SaaS applications for commercial clients including Playground Fitness, TrainFitness, and laundromat hubs.
Product Engineer & Solo Builder
Engineered and shipped 9 flagship production systems with 10+ commercial deployments serving 500+ active examinees, fitness facilities, and business owners.
Live verified contribution velocity from GitHub for @jlsonon.
How I Build Systems
Map Physical Workflow
Study how your business operates today: paper slips, logbooks, cash handling, and where staff lose time.
Design Schema & UI
Design normalized database schemas, staff role permissions, and fast, touch-friendly screen wireframes.
Full-Stack Build
Engineer responsive frontend interfaces, real-time cloud data sync, automated receipt engines, and secure APIs.
Deploy & Verify
Launch on cloud infrastructure, verify real transactions and receipts, and ensure seamless staff onboarding.
Iterate & Automate
Monitor daily operations telemetry, refine based on staff feedback, and automate remaining manual steps.
Have a manual business process
worth turning into software?
Tell me what your business is currently doing manually, what isn't working, and your target timeline. I will review and respond with an honest assessment and actionable roadmap within 24 hours.
Select Your Project Focus: