Software development and consulting services
Learn what I do for companies that need custom software, process automation and technology consulting.
Services
- 24/7 Remote Monitoring and Alerts for Linux Servers — Clinics and Stores in Manaus
- Automate NFe Issuance and Integrate with SEFAZ for Wholesalers in Manaus
- Cloud Backup and Rapid Recovery Quote for Manaus Businesses
- Code audit and remediation plan for vulnerabilities in internal web applications
- Software Development - Manaus
- How to Cut AWS Costs for Legacy Apps Without Rework
- How to Reduce REST API Latency with Distributed Caching and Query Optimization
- Deployment process audit service and remediation plan for frequent production failures
- Deploy Encrypted Incremental Backups to S3‑Compatible Storage for Linux VPS (scripts & policies)
- End-to-End Test Implementation for Legacy Web Systems
- Estimate to Rewrite Delphi Billing Module for a REST API
- How to implement feature flags in PHP monoliths to release features gradually
- How to diagnose and fix PHP-FPM memory leaks on Linux servers
- Game Development — Manaus
- GraphQL Gateway Service to Aggregate Legacy REST APIs
- Hardening, Backup and Monitoring for Linux Servers on VPS
- Consulting to Define Hexagonal Architecture in Legacy PHP Systems
- HMAC-signed Webhooks Implementation Service for Marketplace Integrations
- How to implement eventual delivery between ERP and online store using queues and idempotency (no duplicate orders)
- Integrate WooCommerce with the open-source ERPNext in Manaus
- IT Maintenance for Businesses — Manaus
- Estimate for Keycloak SSO Implementation in Legacy Systems
- Database Audits for LGPD Compliance in Manaus Clinics
- How to Migrate Payment Integrations from SOAP to REST Without Interrupting Sales
- Mobile Apps - Manaus
- Modernize a legacy Delphi system to AWS in Manaus
- Assisted MySQL → PostgreSQL Migration Preserving Primary Keys and Constraints
- Custom Online Appointment Scheduling for Clinics in Manaus
- Service: PostgreSQL Hardening & Tuning for ERPs with Heavy Reports
- Optimizing PostgreSQL Queries for ERP Systems with Slow Reports
- Postgres 'Too many connections' at billing peak — practical diagnosis and remediation guide
- Practical guide: recover a dropped PostgreSQL table with point-in-time recovery without downtime
- How to recover corrupted statistics and indexes in PostgreSQL that caused slow queries
- Reduce costs migrating Magento to OpenMage with a rollback plan and acceptance tests
- PHP Monolith Refactoring and Decoupling Service with Incremental Deliveries and Automated Tests
- REST API latency spikes from N+1 queries and PHP GC — how to diagnose and fix
- Estimate for Building a REST API to Sync Marketplace and Inventory in Manaus — Guide and Steps
- Software Maintenance — Manaus
- Zero-Downtime Database Migration with CDC: Practical Cutover Guide
Guides
- Best Practices for Database Versioning in Agile Projects
- Amazon SQS vs Managed RabbitMQ for ERP–Marketplace Integrations
- Guide to defining an API contract and generating automatic documentation with OpenAPI and Swagger
- Comparison: API Versioning Strategies (Path vs Header vs Semantic vs Date-Based) for Public APIs — Decision Criteria
- Guide to auditing and optimizing cron jobs that cause locks and deadlocks in PostgreSQL
- Comparison: strategies, tools, and costs to implement automated tests in legacy systems without coverage
- Practical Guide: Auto‑scale Self‑Hosted Runners in GitHub Actions for PHP CI Pipelines
- Ceph vs NFS vs GlusterFS for shared storage on VPS with containers
- Security checklist for CI/CD pipelines with self‑hosted runners and secrets management
- Step-by-step guide to CI/CD with GitHub Actions for PHP/Laravel
- Guide to implementing distributed tracing with OpenTelemetry in a PHP monolith
- Docker vs Virtual Machines for Enterprise High-Availability Applications
- Guide: Centralize logs with Fluentd and Elasticsearch for PHP apps on a VPS
- GraphQL vs REST for e‑commerce and ERP (catalog and inventory synchronization)
- Practical guide to set up Prometheus and Grafana with Docker Compose on a VPS
- Guide to Converting XLS Reports and Ad-hoc Queries into Paginated JSON Endpoints for BI
- How to Add Unit and Integration Tests to Legacy PHP Without Breaking Production
- Low-code platform comparison for internal management systems in Manaus companies
- Guide: Organizing PostgreSQL Migrations and Rollbacks for Small Teams
- Comparative: modern PHP frameworks to refactor a monolith (Laravel vs Symfony vs Slim)
- Comparing PHP Observability Tools: New Relic vs Elastic APM vs OpenTelemetry
- Pre-deploy checklist and quick rollback plan for PHP applications in production
- Prometheus & Grafana vs Loki & Tempo for PHP observability
- Comparison: RabbitMQ vs Apache Kafka vs Redis Streams for e‑commerce inventory sync
- Building Secure APIs with OAuth2 and Rate Limiting Policies for Enterprise Systems
- Step-by-step Firebird to PostgreSQL migration with zero downtime — Manaus
- Comparing Strategies to Decouple Monoliths: Strangler vs Incremental Rewrite
- Practical guide to implementing structured JSON logs and request correlation for production debugging
- Comparing Traefik and Caddy for HTTPS routing in Docker environments
- Traefik vs Nginx as a reverse proxy for multiple Docker containers in production
- VPS Linux security checklist before putting services into production: hardening, SSH, backups and monitoring
- Zero‑Downtime Deployment Strategies in Kubernetes — RollingUpdate vs Blue/Green vs Canary