Available for Enterprise Systems & Government ICT Projects

Building Intelligent Systems That Deliver Real Value.

I am a |

Senior Systems Architect and Full-Stack Developer with 12+ years of proven expertise delivering secure, high-availability government information systems, AI assistants, and enterprise platforms. I partner with leadership to analyze workflows, architect scalable infrastructure, automate mission-critical operations, and maintain reliable production deployments.

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Allan G. Acosta – Systems Architect & Full-Stack Developer
Azure & Entra ID
ASP.NET Core / C#
AI & RAG Systems
SQL Server / IIS
allan@agacosta-core: ~ ONLINE
user@allan:~$ system --status
✓ Architect: Allan G. Acosta (Lead Engineer)
✓ Production Stack: .NET 8, Azure, Entra ID, RAG AI
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Years of Engineering Experience

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Gov & Enterprise Systems

0 .9%

Production System Uptime

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National LGU Adoption Rate

Enterprise Capabilities

Solutions Designed for Scale & Impact

I deliver complete software ecosystems—taking your concept from requirements analysis and architectural design to full implementation, security hardening, and production support.

HR & Productivity Systems

Automated biometric timekeeping, real-time Daily Time Records, leave applications, and individual accomplishment reporting.

  • Biometric & Face Recognition
  • Automated DTR Computation
  • Multi-tier Leave Approvals

AI Assistants & RAG Systems

Domain-specific generative AI chatbots powered by Retrieval-Augmented Generation over organizational documents and laws.

  • Semantic PDF & Doc Search
  • OpenAI & Local Ollama Models
  • Citation-Backed Answers

Regulatory & Compliance Hubs

Centralized portals allowing regulated entities, utilities, and stakeholders to submit filings, track permits, and ensure statutory compliance.

  • Public Stakeholder Filing
  • Azure Blob Storage Vault
  • Multi-office Review Ladder

Workflow Automation

Digitizing paper-heavy bureaucratic operations into streamlined, transparent electronic approval channels with tamper-proof signatures.

  • Cryptographic E-Signatures
  • Power Automate Triggers
  • Automated Email & SMS Alerts

ITSM & Support Ticketing

Comprehensive service desk platforms featuring automated ticket dispatch, SLA timers, escalation chains, and technician workload boards.

  • Automated Ticket Routing
  • SLA Tracking & Escalation
  • CSAT Resolution Feedback

Dashboards & Data Analytics

Transforming raw operational ledgers into real-time visual scorecards, performance metrics, and automated executive audit reports.

  • Interactive Power BI / Chart.js
  • T-SQL Data Aggregation
  • Exportable PDF/Excel Digests

Digital Verification & Audit

Instant cross-validation of official certificates, licenses, and submissions using secure cryptographic hashing, QR codes, and anti-fraud checks.

  • QR Code & Hash Verification
  • Instant Discrepancy Alerts
  • Tamper-Proof Audit Trails

Mobile & Offline Apps

Responsive web applications and companion mobile clients built for field personnel, provincial branches, and low-connectivity environments.

  • Offline-First Data Storage
  • Geolocation & Photo Proof
  • Background Data Sync
Systems Portfolio

Featured Production Platforms

A curated selection of mission-critical platforms I have architected and deployed for national government agencies, regulatory commissions, and enterprise operations.

Looking for More Systems?

Explore my complete engineering portfolio including national analytics platforms, academic R&D networks, and regional e-commerce hubs.

Engineering Depth

End-to-End Systems Architecture

True full-stack engineering encompasses the entire lifecycle: client ergonomics, identity management, edge security, AI pipelines, database normalization, and continuous telemetry.

Tier 1: Client & Presentation Layer Zero-Trust Frontend
Responsive Web Portals
Progressive Mobile Clients
Microsoft 365 & Teams Hub
Role-Based Access UI
HTTPS / TLS 1.3
Tier 2: Edge Security, Gateway & Identity Authentication & WAF
Microsoft Entra ID (Azure AD) SSO
Azure Application Gateway
Cloudflare WAF & Anti-DDoS
Biometric & 2FA Validation
REST APIs / HMAC Webhooks
Tier 3: Service Engine & AI Intelligence Core High-Performance Core
ASP.NET Core (.NET 8) Web APIs
RAG Vector Search Pipelines
OpenAI & Ollama (Phi/Qwen) LLMs
Power Automate Background Tasks
Encrypted Connection Pools
Tier 4: Enterprise Data & Storage Tier ACID & Geo-Redundancy
Microsoft SQL Server / Azure SQL
Azure Blob Storage (Document Vault)
Redis In-Memory Token Caching
Automated Point-in-Time Backups
CI/CD Pipelines & Health Monitoring
Tier 5: DevOps, Hosting & Observability SLA & Operations
GitHub Actions CI/CD Deployments
Windows Server & IIS Hardening
Automated 99.9% Uptime Checks
Audit Trails & Compliance Logs
Professional Technology Stack

Tools, Frameworks & Engineering Mastery

A comprehensive, enterprise-grade technology stack honed over a decade of architecting, coding, securing, and operating production government and enterprise software.

Full Application Ecosystem Architecture

Capable of Delivering the Complete End-to-End Solution

Eliminating multi-vendor friction and fragmented handoffs. I design, develop, deploy, and maintain the entire technology ecosystem—from responsive client interfaces and native mobile apps to secure cloud infrastructure and AI intelligence.

Web Application + Backend API + Database + Android App + iOS App + Cloud Deployment + AI Integration
Unified Architecture in Action: How the Ecosystem Operates Single-Architect Cohesion

A typical modern system requires office staff on responsive desktop web portals, field personnel on Android & iOS devices, and executives reviewing real-time dashboards. Rather than managing three different development agencies, I architect a unified ASP.NET Core & RESTful API backbone secured by Microsoft Entra ID (Azure AD), write to optimized SQL Server schemas, empower field teams with offline mobile synchronization and biometric face authentication (as proven in ORAS), and integrate enterprise RAG AI assistants (like ERIC AI) to deliver instantaneous, citation-backed answers over complex organizational documents.

Zero Multi-Vendor Friction Unified Entra ID SSO Single Shared Data Model Live Background Sync Enterprise RAG Engine 99.9% Production SLA
Complete System Delivery Capabilities:
Web, Mobile & API Data Parity
Zero-Trust SSO (Entra ID)
3NF Relational Databases
Android APK & iOS TestFlight
Azure App Services & IIS
RAG Document Vector Integration
Offline Caching & Auto-Sync
Cloudflare WAF & TLS 1.3
Biometric Face & Touch ID
Automated CI/CD GitHub Actions
Real-Time Analytical Dashboards
Full Source Code & IP Handover

Web & Full-Stack Development

13 Technologies
Enterprise Web & Full-Stack Engineering

Scalable, High-Performance Web Applications & Dynamic Client Portals

Architecting responsive, secure, and intuitive web systems powered by C#, ASP.NET Core, PHP, modern JavaScript/TypeScript, and React component ecosystems.

C# ASP.NET Core .NET 8 PHP MVC JavaScript TypeScript React Bootstrap 5 REST APIs PWA Offline
Flagship Web Implementation: ERC-SERVE & Verifier Online Portals Production Case Study

Architected and engineered high-concurrency national regulatory portals for the Energy Regulatory Commission. ERC-SERVE delivers secure external submissions, automated document queuing, dynamic compliance validation, and multi-tier role approvals. Verifier allows the public and stakeholders to authenticate regulatory certifications via QR verification and cryptographic hashes.

Online External Submission Portal Dynamic Form Engine Multi-Tier Approval RBAC Instant QR Verification Automated PDF Generation Real-Time Application Status
Practical Web & Full-Stack Capabilities Implemented:
Responsive government & enterprise portals
Granular role-based access control (RBAC)
Dynamic form builders & schema validations
Contract-driven RESTful API consumption
Automated server-side PDF report exports
Progressive Web App (PWA) offline caching
High-speed client-side filtering & search
CSRF protection & XSS input sanitization
Seamless mobile & ultra-wide screen adaptivity
Interactive data dashboards & telemetry graphs
Entra ID (Azure AD) SSO & session handling
Chunked large file uploads & progress bars
C#
Enterprise Language
ASP.NET Core
MVC & Razor Pages
.NET (8 & Framework)
High-Performance Runtime
PHP
CodeIgniter & Custom MVC
JavaScript
Modern Client-Side Logic
TypeScript
Type-Safe Architecture
React
SPA & Component Systems
HTML5
Semantic Document Layout
CSS3
Modern Custom Variables & Grid
Bootstrap
Responsive Design Systems
REST APIs
Microservice Endpoints
Responsive Web Dev
Adaptive Viewport Layouts
Progressive Web Apps
Service Workers & Offline

Mobile Application Development

Android & Apple iOS
Native & Cross-Platform Engineering

Native & Cross-Platform Mobile Applications for Android and Apple/iOS Devices

Delivering production mobile clients with offline data encoding, biometric face verification, and seamless backend cloud synchronization.

Android iOS Kotlin Swift React Native Hybrid Apps API Integration Offline Sync Biometrics
Flagship Mobile Implementation: ORAS Mobile Production Case Study

Architected and built ORAS Mobile—an enterprise employee productivity and attendance mobile application featuring offline DTR logging, automated background synchronization upon connectivity restoration, biometric face scanning check-in, secure Microsoft Entra ID authentication, and real-time push notifications.

Offline Attendance Encoding Biometric Face Check-in Background Sync Push Alerts Service Orders Executive Mobile DTR
Practical Mobile Capabilities Implemented:
Offline data encoding
Automatic background sync
Biometric unlocking
Face scanning & verification
Secure login & OTP auth
API-driven mobile apps
Employee productivity apps
Timekeeping & DTR apps
Mobile dashboards & analytics
Push & in-app notifications
Mobile ticketing & support
APK/AAB & TestFlight packaging
Android Development
Native OS & SDK
iOS Development
Apple Ecosystem & Cocoa
Kotlin
Modern Android Core
Swift
Native iOS Development
React Native
Cross-Platform Apps
React-based Hybrid Apps
Web-to-Mobile Wrappers
Cross-Platform Dev
Unified Codebases
Native Mobile Dev
Deep Hardware Access
Mobile UI/UX Design
Touch-Ergonomic Flows
Responsive Mobile UI
Adaptive Screen Density
REST API Integration
Mobile Network Endpoints
Offline-First Apps
Queue & Cache Architecture
Local Data Storage
SQLite & Encrypted State
Background Sync
Intelligent Auto-Retry
Push Notifications
FCM & APNs Channels
Biometric Authentication
Fingerprint & Touch ID
Face Recognition
AI Biometric Liveness
Camera & Hardware
Sensors, GPS & Scanners
Secure Mobile Auth
Tokens & Keychain Vaults
APK / AAB Packaging
App Bundles & Keystores
Google Play Deployment
Console Track Management
App Store & TestFlight
Apple Review & Beta QA
App Maintenance & Updates
OTA Patches & Versioning

Backend & API Engineering

8 Technologies
High-Throughput Microservices & Core Logic

Enterprise Backend Systems, REST APIs & Distributed Workflows

Constructing mission-critical server architectures using C# ASP.NET Core and PHP, enforcing stateless JWT/OAuth2 security, rate-limiting, and resilient background processing.

ASP.NET Core Web APIs C# 12 / .NET 8 REST Architecture JWT & OAuth2 HMAC Signatures Background Workers WebSockets & Real-time Swagger / OpenAPI
Flagship Backend Implementation: ORAS Core API & Tech Support Backend Production Case Study

Engineered the core API services powering ORAS and the ERC Tech Support platform. Features high-concurrency request handling, distributed token validation, resilient background job queues for batch processing, automated ticket dispatching algorithms, and strict rate-limiting to protect upstream government services.

High-Concurrency Endpoints Zero-Trust Token Validation Background Queue Workers OpenAPI 3.0 Specs Automated Health Probes Encrypted Storage Payloads
Practical Backend & API Capabilities Implemented:
Contract-driven REST API design (Swagger)
Asynchronous request pipelines & I/O pooling
Microsoft Entra ID & JWT token authentication
HMAC request signing & anti-tampering
Granular IP & account rate-limiting
Background queue workers & recurring jobs
Real-time SignalR / WebSocket event streaming
Multi-tenant data isolation & routing
Health check & readiness telemetry endpoints
Structured JSON exception handling & logging
Gzip / Brotli payload compression
Secure stream-based file transfer & virus scans
C# & .NET Web APIs
High-Throughput Services
ASP.NET Core Services
Dependency Injection Core
PHP (CodeIgniter)
Modular API Controllers
REST API Architecture
OpenAPI & Swagger Specs
JWT & OAuth2 Security
Stateless Token Validation
Rate Limiting & HMAC
DDoS & Request Signing
Background Workers
Scheduled Queue Jobs
WebSockets & Real-time
Instant Push Telemetry

Database & Data Engineering

8 Technologies
High-Availability Relational Schemas & Performance

Enterprise Database Design, Optimization & Stored Procedure Logic

Architecting 3NF normalized relational databases, high-performance T-SQL stored procedures, indexing strategies, and automated disaster recovery for regulatory and national datasets.

Microsoft SQL Server Azure SQL PaaS MySQL Entity Framework T-SQL Procedures Execution Plan Tuning ETL Pipelines Point-in-Time Backups
Flagship Database Implementation: RES Scorecard & TourLISTA Databases Production Case Study

Designed enterprise relational schemas managing thousands of nationwide electricity suppliers, municipal tourist enterprises, and regulatory submissions. The RES Scorecard system leverages complex T-SQL stored procedures computing real-time compliance indices across financial, operational, and regulatory parameters. TourLISTA utilizes spatial indexes for rapid municipal geo-queries and regional analytics.

Complex Scoring Stored Procedures Spatial Geo-Location Indexing ACID Compliant Transactions Zero-Loss Point-in-Time Recovery ETL Legacy Transforms Sub-Second Analytical Queries
Practical Database & Data Capabilities Implemented:
3NF database normalization & ER diagrams
Complex T-SQL stored procedures & views
Clustered & non-clustered index tuning
Execution plan analysis & bottleneck fixes
ACID transaction management & deadlock isolation
Automated point-in-time backups & recovery
Legacy database data migration & ETL scripts
Entity Framework Core code-first migrations
Spatial geo-location data queries & mapping
Multi-tenant schema design & partitioning
Column-level data encryption & audit trails
Database health telemetry & query profiling
Microsoft SQL Server
T-SQL Stored Procedures
MySQL
Relational Data Engine
Entity Framework
Code-First & Migrations
Database Design
Normalization & ER Diagrams
Query Optimization
Index & Plan Tuning
Stored Procedures
Complex Weighted Scoring
Data Migration
ETL Legacy Transforms
Backup and Recovery
Point-in-Time Restore & DR

AI & Automation Engineering

12 Technologies
Generative AI & Enterprise Workflow Automation

Intelligent RAG Assistants, Local LLM Inference & Autonomous Workflows

Engineering secure Retrieval-Augmented Generation (RAG) pipelines, OpenAI API integrations, local SLMs (Phi-3, Qwen) via Ollama, and Microsoft Power Automate enterprise triggers.

OpenAI API RAG Vector Search Ollama Runtime Qwen LLM Microsoft Phi Prompt Engineering Power Automate Multi-Agent Routing
Flagship AI Implementation: ERIC AI Regulatory Assistant Production Case Study

Architected and deployed ERIC AI—an enterprise regulatory intelligence AI assistant for the Energy Regulatory Commission. Integrates secure document vectorization, citation-backed knowledge synthesis over thousands of pages of official resolutions and market rules, prompt guardrails eliminating hallucinations, and fallback to local Ollama inference models for maximum data privacy.

Instant Regulatory Q&A Citation-Backed Synthesis Vector Knowledge Base Zero-Hallucination Guardrails On-Premises Ollama Inference Automated Document Ingestion
Practical AI & Automation Capabilities Implemented:
RAG document vector search & ingestion
Semantic text chunking & embedding pipelines
Citation-backed knowledge synthesis & footnotes
On-premises local LLM inference via Ollama
Enterprise OpenAI API integration & streaming
Small Language Model (Phi-3/Qwen) optimization
Multi-agent routing & intent classification
Microsoft Power Automate enterprise flows
Automated document summarization pipelines
Prompt engineering & anti-jailbreak guardrails
Multi-turn conversational chatbot memory
Enterprise privacy & zero-data-leakage compliance
OpenAI API
Enterprise Integrations
Large Language Models
Generative Systems
RAG (Retrieval-Augmented)
Vector Knowledge Ingestion
AI Assistants
Enterprise Domain Copilots
Ollama Runtime
On-Premises Local Inference
Qwen LLM
High-Reasoning Open Models
Microsoft Phi
SLM Local Deployments
Prompt Engineering
System Guardrails & Formats
AI API Integration
Streaming Markdown Endpoints
Agent-based AI Systems
Autonomous Multi-Agent Routing
Workflow Automation
MS Power Automate & Triggers
Knowledge Management
Document Vector Indices

Microsoft Ecosystem & Cloud

8 Technologies
Enterprise Microsoft Ecosystem & Azure Cloud

Cloud Infrastructure, Microsoft Entra ID SSO & Hybrid Architecture

Deploying enterprise platforms across Microsoft Azure, configuring Zero-Trust Entra ID Single Sign-On, Azure App Services, Blob Storage vaults, and IIS web clusters.

Microsoft Azure Azure App Services Microsoft Entra ID Azure Blob Storage Microsoft Graph API Microsoft 365 Hub Windows Server IIS App Gateway WAF
Flagship Cloud Implementation: ERC Commission-Wide Cloud Architecture Production Case Study

Architected the unified cloud identity and data architecture for multiple ERC production systems (ORAS, ERIC AI, ERC-SERVE, Tech Support). Unified all applications under Microsoft Entra ID (Azure AD) Single Sign-On with multi-factor authentication, configured Azure Blob Storage with short-lived SAS tokens for regulatory document vaults, and deployed load-balanced IIS instances behind Azure Application Gateway.

Centralized Single Sign-On (SSO) Multi-Factor Authentication (MFA) Secure Azure Blob Storage SAS Microsoft 365 Shared Data Virtual Network Isolation Geo-Redundant PaaS
Practical Microsoft & Cloud Capabilities Implemented:
Azure App Services & VM hosting deployments
Microsoft Entra ID (Azure AD) SSO integration
Multi-factor authentication (MFA) policies
Azure Blob Storage encrypted document vaults
Microsoft Graph API organizational directory sync
Microsoft 365, SharePoint & Teams integration
Windows Server IIS app pools & SSL hardening
Azure Application Gateway WAF & Layer 7 routing
Granular role-based access security policies
Hybrid on-premises & cloud connectivity
Azure cloud resource telemetry & cost optimization
Automated cloud snapshot backups & replication
Microsoft Azure
App Services, VMs, SQL PaaS
Azure Blob Storage
Secure Encrypted Vaults
Microsoft Entra ID
Azure AD SSO & Multi-Factor
Microsoft Graph
Organizational Directory API
Microsoft 365 Integration
SharePoint, Forms & Teams
Azure Application Gateway
WAF & Layer 7 Routing
IIS (Internet Information Services)
App Pools & SSL Binding
Cloud-connected Applications
Hybrid In-House & Cloud

DevOps & Infrastructure

11 Technologies
Zero-Downtime Operations & Production Hardening

CI/CD Automation, Server Administration, Edge Security & WAF

Operating resilient production environments with GitHub Actions CI/CD pipelines, Windows Server & IIS management, Cloudflare WAF protection, and 99.9% uptime guarantees.

GitHub Actions CI/CD Windows Server 2022 IIS Zero-Downtime Cloudflare WAF & CDN SSL/TLS Management Reverse Proxy Production RCA 99.9% Uptime SLA
Flagship Infrastructure Implementation: Multi-Node Production Server Cluster Production Case Study

Configured and maintained the end-to-end production hosting infrastructure for agacosta-works.online and multiple government agency platforms. Features zero-downtime blue/green deployments via GitHub Actions, Cloudflare edge security blocking automated vulnerability scanners and DDoS attacks, automated Let's Encrypt SSL certificate renewals, and proactive server uptime monitoring.

Automated GitHub Actions CI/CD Cloudflare Anti-DDoS Defense Automated SSL Renewal Proactive Server Telemetry Rapid Incident Hotfixes Isolated Production AppPools
Practical DevOps & Infrastructure Capabilities Implemented:
Automated GitHub Actions build & deploy pipelines
Windows Server 2019/2022 security hardening
IIS multi-site setup & dedicated application pools
Cloudflare edge DNS, caching & anti-DDoS rules
Automated SSL/TLS certificate installation & renewal
Reverse proxy configuration & port routing
Staging vs. production release cutover strategies
Real-time server health probes & alert triggers
Root cause analysis (RCA) & production hotfixing
Automated off-site backups & disaster recovery plans
Environment secret management & key rotation
99.9% uptime SLA monitoring & incident logs
Git
Branching, Rebasing & Tags
GitHub & Actions
CI/CD Automation Pipelines
Windows Server
Active Directory & Security
IIS Deployment
Zero-Downtime Releases
Cloudflare
Edge DNS, CDN & WAF
API Security
CORS, CSRF & Rate Limits
SSL/TLS
Certificate Management
Reverse Proxy
Load Balancing & SSL Offload
Production Troubleshooting
Root Cause Analysis (RCA)
Application Deployment
Staging & Production Cutover
Environment Configuration
Key Vaults & Secrets

Systems Engineering & Lifecycle

14 Methodologies
Complete Software Development Lifecycle (SDLC)

Full Systems Engineering: From Stakeholder Needs to Handover & Support

Leading government and enterprise projects across the full engineering lifecycle—stakeholder elicitation, systems analysis, UI/UX prototyping, UAT, documentation, and tier-3 support.

Systems Analysis System Architecture Process Automation UI/UX Design UAT Facilitation Technical Documentation User Training Tier-3 Support
Flagship Lifecycle Implementation: GAD-MAP & PCF National Governance Rollouts Production Case Study

Delivered complete end-to-end SDLC execution for landmark national systems with DILG and regional agencies. Led requirements elicitation across municipal and provincial executives, designed intuitive UI/UX workflows, facilitated multi-stakeholder User Acceptance Testing (UAT), authored comprehensive administrator manuals, delivered hands-on training workshops, and provided continuous tier-2/3 technical support.

National Agency Rollouts Multi-LGU Stakeholder Training Comprehensive User & Admin Manuals Formal UAT Acceptance Sign-offs Full Source Code & IP Handover Continuous Tier-3 Production Support
Practical Systems Engineering Capabilities Implemented:
Stakeholder requirements elicitation & scoping
Manual workflow business process digitalization
End-to-end system architecture blueprinting
Ergonomic UI/UX wireframing & interactive flows
Formal User Acceptance Testing (UAT) facilitation
Comprehensive user manuals & system architecture docs
Hands-on stakeholder training & walkthrough workshops
Clean IP, source code repository & database handover
Tier-2 & Tier-3 helpdesk ongoing technical support
Preventive & corrective maintenance routines
Regulatory & security policy compliance verification
Iterative post-launch feature releases & enhancements
Systems Analysis
Process Digitalization
System Architecture
Scalable & Resilient Design
Business Process Automation
Workflow Modernization
Requirements Analysis
Stakeholder Elicitation
UI/UX Design
Ergonomic Workflow Layouts
API Architecture
Contract-Driven Design
Database Architecture
Relational Data Integrity
Authentication & AuthZ
Granular RBAC Matrices
User Acceptance Testing (UAT)
Stakeholder Validation
Technical Documentation
Manuals, Specs & SOPs
User Training
Workshops & Walkthroughs
Deployment
Staging & Production Cutover
Technical Support
Tier 2 & Tier 3 Helpdesk
Preventive & Corrective Maint.
SLA & Health Monitoring
Career Journey

Professional Experience

A progressive track record of engineering leadership, government digital transformation, and national-scale software deliveries.

Energy Regulatory Commission (ERC)

Jan 2025 – Present
Software Development Lead & Azure Cloud Administrator
  • Architectural Leadership: Spearheading the engineering of mission-critical regulatory platforms (ORAS, ERC-SERVE, RES Scorecard) using ASP.NET Core MVC, Razor Pages, and Azure PaaS.
  • Generative AI & RAG: Architected ERIC AI, an enterprise knowledge retrieval assistant that semantically indexes resolutions, legal mandates, and operational guidelines.
  • Azure Cloud & Security: Managing App Services, Azure SQL, Application Gateways, and Microsoft Entra ID integration ensuring 99.9% uptime and zero-trust identity authentication.
  • Process Automation: Integrated automated workflows and digital signatures to replace manual paperwork across agency departments.
ASP.NET Core Microsoft Azure Microsoft Entra ID RAG / LLMs Power Automate SQL Server

Department of Science and Technology (DOST) – MIMAROPA

Aug 2018 – Jan 2025 (6.5 Years)
Senior Science Research Specialist & Head of MIS Unit
  • Strategic ICT Leadership: Directed the Management Information Systems (MIS) Unit, overseeing regional server infrastructure, cybersecurity posture, and high-stakes software development.
  • National Tourism Analytics: Developed TourLISTA, an analytics platform scaled from regional pilot to full national adoption across tourism offices nationwide.
  • Regional E-Commerce & S&T: Engineered MIMAROPA Ventures 2.0, an e-commerce platform empowering science-and-technology assisted MSMEs across island provinces.
  • SUC Research Network: Created the RADIUS information system connecting State Universities and Colleges to centralize patent disclosures and R&D breakthroughs.
PHP / CodeIgniter Linux (Ubuntu/CentOS) Python (Pandas) MySQL Power BI

Department of the Interior and Local Government (DILG) – BLGD

May 2014 – Aug 2018 (4+ Years)
Web & Information Systems Developer
  • Landmark National System: Architected the PCF Monitoring System to track hundreds of millions of pesos in performance challenge subsidies and infrastructure projects.
  • 100% Nationwide LGU Adoption: Deployed nationwide and achieved full adoption by over 1,700 Local Government Units (provinces, cities, municipalities).
  • Rigorous Auditing: Automated financial liquidation reporting and photo verification, eliminating audit discrepancies and ensuring full transparency.
PHP (MVC) MySQL Linux Server System Architecture
Engineering Methodology

How I Deliver Enterprise Systems

A battle-tested 7-stage lifecycle guaranteeing systems are secure, compliant, intuitive, and built for decades of reliable production operation.

01

Discover

Deep-dive interviews with executives, staff, and end-users to uncover actual bottlenecks, legal compliance rules, and statutory mandates.

02

Analyze & Specify

Formulating data flow diagrams, normalized schemas, role matrices, security boundaries, and quantifiable acceptance metrics.

03

Architect & Design

Designing clean multi-tier architecture, Entra ID zero-trust authentication, API contracts, and high-fidelity UI prototypes.

04

Develop & Automate

Writing clean, robust C#/.NET or Python code, integrating AI/RAG pipelines, optimizing database stored procedures, and automating tasks.

05

Test & UAT

Comprehensive user acceptance testing (UAT), penetration checks, cross-device QA, and edge-case stress validation.

06

Deploy & Harden

Staging to production rollout via Azure App Services, IIS, SSL certificate installation, WAF rule hardening, and DNS cutover.

07

Train, Document & Support

Authoring comprehensive user manuals, conducting stakeholder orientation, monitoring production health logs, and providing dependable ongoing SLA support.

Enterprise Engagement

Need a Mission-Critical System Built or Modernized?

Whether you represent a government department modernizing paper workflows, an energy utility requiring regulatory compliance platforms, or a growing enterprise integrating internal AI assistants—I provide full end-to-end architecture and software delivery.

Zero-Trust Security & Entra ID
High-Availability 99.9% Uptime
Direct Senior Architect Communication
Complete Code & IP Handover
Schedule a Project Discussion Email Directly
12+
Years Proven Experience

Delivering national systems trusted by the Energy Regulatory Commission, DOST, and DILG nationwide.

Ready for Q3/Q4 Project Engagements
Academic Foundations

Education & Credentials

Strong academic grounding in computer science algorithms, systems design, and public administration.

MS in Computer Science

Don Mariano Marcos Memorial State University
2025 – Present (In Progress)

Master in Development Administration

DMMMSU Open University
2016 – 2017

BS in Computer Science

Don Mariano Marcos Memorial State University
2010 – 2014
Cum Laude
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Let's Discuss Your Next System

Have an enterprise platform to engineer, a government workflow to digitize, or an AI assistant project to deploy? Send an inquiry below.

Direct Communication

Email Address

allan.acosta24@gmail.com

Location

Taguig City, Metro Manila, Philippines

Official Website

agacosta-works.online

Inquiry Response Window

Within 24 Business Hours

Professional Profiles:

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