Custom software
Purpose-built systems shaped around how your business actually runs.
Arnex designs, builds and runs custom software for businesses: web and mobile apps, .NET platforms, integrations and content systems. Backed by 14 years in production and code other companies already run.
Web apps
.NET APIs
Built to last
The same engineering behind client work ships in public, with tests, benchmarks and download counts straight from the registries.
An event-sourced headless CMS (.NET API, Next.js admin, PostgreSQL) running on Linux infrastructure provisioned and hardened in-house: SELinux, firewall, self-renewing TLS, health checks and nightly backups.
Object mapping in fourteen packages, benchmarked on x64 and arm64 against AutoMapper and Mapperly.
View on GitHubResult pattern library. 0 B allocated across 1.6M operations on 8 threads.
View on GitHubRetry, circuit breaker, bulkhead and hedging. 503 tests on .NET 8 and .NET 10.
View on GitHubSpreadsheet and CSV reader with zero dependencies, consumed by barakoCMS.
View on GitHub50 packages on NuGet and ten utilities on npm, all maintained by the same engineer who would build your project.
Full NuGet profileFound by using them in production, not by browsing for issues. Three repos, 13k stars combined.
Hands-on engineering, not slide decks. One accountable engineer across the whole lifecycle.
Purpose-built systems shaped around how your business actually runs.
Fast, accessible web apps, from internal dashboards to customer portals.
Android and iOS apps that connect to your existing services.
Performance-focused C#/.NET services, integrations and data layers.
Headless content systems on barakoCMS: content types, roles and workflows.
Architecture advice, audits and pull-request reviews for in-house teams.
Libraries and developer tools, published and maintained in the open.
Updates, monitoring and fixes after launch, so the software keeps working.
Requirements, milestones and a fixed quote or retainer agreed in writing before any code.
Code lives in your repository from day one, with a working demo at every milestone.
Integration tests against real databases, published benchmarks, security scanning on every PR.
Hardened hosting, self-renewing TLS, health checks and nightly backups.
A defined deliverable with a fixed quote, milestones and a handover at the end.
A reserved block of development and support hours each month for ongoing work.
Reviews, architecture sessions and troubleshooting, billed by the hour.
Rates quoted in Philippine pesos or US dollars after a free scoping call. Every engagement has a written agreement and an official receipt.
Arnex Software Development Services is a sole proprietorship owned and operated by Arnel Robles, a .NET engineer with 14 years in production software. You work directly with the person who scopes, writes, tests and supports your code, and who answers the emails.
Effective October 18, 2026
This policy explains how Arnex Software Development Services ("Arnex SDS", "we") handles personal information through arnexsds.com and the applications we operate, including apps that let you sign in with Facebook or other Meta products. We follow the Philippine Data Privacy Act of 2012 (Republic Act No. 10173).
If you sign in with Meta, we receive only what you authorise. That is usually your name, email address, profile picture and a Meta app-scoped user ID. If you email us, we receive your email address and what you choose to send. We do not collect passwords for third-party accounts.
We use it to create and secure your account, to provide the features you request, to reply to you, and to meet legal obligations. We do not sell personal information, and we do not use it for advertising profiles.
We share data only with service providers needed to run our apps, such as hosting and email, and only under confidentiality obligations. We also share it when Philippine law requires us to.
We keep data while your account is active, or as long as the law requires, and then delete it. Data is encrypted in transit, and access is limited to the proprietor.
You may request access to your data, correction or deletion, and you may object to processing. Email arnel.robles@arnexsds.com. You may also complain to the National Privacy Commission of the Philippines.
To delete the data our apps received through Meta login, use either method:
We confirm your request within 3 business days and delete your account data within 30 days. Records that the law requires us to keep, such as invoices, are deleted when the legal retention period ends.
Effective October 18, 2026
These terms cover your use of arnexsds.com and the applications operated by Arnex Software Development Services, a sole proprietorship of Arnel Robles in the City of Koronadal, South Cotabato, Philippines. Client projects are also covered by a separate written agreement, and that agreement prevails where the two differ.
Use. Use our sites and apps lawfully. Do not try to disrupt them, reverse-engineer them, or access them without authorisation. We may suspend accounts that break these terms.
Intellectual property. Site content belongs to Arnex SDS. Ownership of client deliverables passes as set out in each project agreement. Open-source components keep their own licences.
Liability. Our sites and apps are provided "as is". To the extent the law allows, Arnex SDS is not liable for indirect or consequential loss.
Governing law. These terms are governed by the laws of the Republic of the Philippines. Questions: arnel.robles@arnexsds.com.
Effective July 17, 2026
How refunds and cancellations work for services and platforms provided by Arnex Software Development Services. The rules depend on what you are paying for.
Project fees and deposits secure our time and cover work already scheduled or performed, and are generally non-refundable once work has begun. If you cancel a project before work begins, any deposit paid may be refunded less any costs already incurred. For milestone-based projects, completed and accepted milestones are non-refundable. Fees for milestones not yet started may be refundable, subject to work already done.
Subscriptions (for example, BaryoClub or the accounting module) are billed in advance for the selected period, monthly or annual. You may cancel at any time. Cancellation stops future renewals, and your subscription stays active until the end of the current paid period. Payments for the current period are generally non-refundable, and we do not give partial or pro-rated refunds for unused time, except where the law requires it. If we materially fail to provide a subscribed service and cannot resolve it within a reasonable time, we may provide a credit or pro-rated refund for the affected period.
Where Arnex processes payments on behalf of an organization, such as membership dues or event fees, those payments are collected for and settled to that club, association or event organizer. Refunds are decided by that organization under its own rules. Arnex facilitates approved refunds but is not the merchant of record. Contact the organization you paid first. We will help coordinate where appropriate.
Email arnel.robles@arnexsds.com with your name, the service or platform, the payment reference or date, and the reason. Approved refunds go back to the original payment method through our payment provider, Xendit, where possible. How long the funds take to appear depends on your bank or e-wallet. Payment-processing fees may be non-refundable.
If you do not recognize a charge, contact us first so we can resolve it quickly. A chargeback raised without contacting us may delay resolution. This policy is subject to any mandatory consumer-protection rights you have under Philippine law.