01
Business web applications
Internal platforms, client portals, and workflows that support daily business operations.
AngularNext.js.NET
Chemical & software engineer
Full-stack software for industrial operations.
I build full-stack systems for complex operations, with 6+ years of experience across manufacturing, warehousing, logistics, AI, cloud applications, and financial services.
Capabilities
Areas of expertise.
02
Systems integration
Connections to ERPs, banks, invoicing, tax systems, and external APIs, with logging and error handling built in.
REST APIsERPPayments
03
Real-time dashboards
Dashboards for telemetry, maps, alerts, and historical data.
MQTTSignalRTimescaleDB
04
AI integration
AI-powered product features, computer vision, language search, and intelligent workflows connected to operational systems.
AIComputer visionNLP
About
A software engineering career grounded in chemical engineering.
I am Romulo Barbosa Ribeiro, a senior software engineer with 6+ years of experience building enterprise, industrial, logistics, IoT, AI, and cloud-based applications. I started through a technology formation program, worked on MES platforms and enterprise systems, and now develop AI-powered security products. My main stack includes .NET, Angular, React, Next.js, SQL Server, PostgreSQL, Azure, AWS, and Docker.
My training in chemical engineering established a process-oriented approach to software development. I examine the workflow, constraints, and failure modes before defining the solution. This method has supported work on ERP integrations, payment systems, and industrial telemetry.
I favor traceable code, clear interfaces, and technical decisions that can be explained and maintained.
Experience areas
Systems, tools, and technologies.
A concise view of the domains and technologies I use to design, build, integrate, and operate software.
10 projects shown
Real-time video analysis and security operations
AI Video Intelligence Platform
A multi-tenant platform for real-time video analysis, object detection, and natural-language video search.
Rebuilt video communication, standardized APIs, and connected AI analysis to production workflows.
.NETAngularWebRTCDockerGitHub Actions
Trip planning, participants, accommodation, and payments
Group Travel Management System
A system for coordinating group travel, accommodation, payments, and participant records in one operational workflow.
Structured booking, payment, and participant-management processes for organized group travel.
Angular.NETREST APIsSQL Server
AI-assisted language learning across web and mobile
Language Learning Platform
A progressive web application for guided language practice, progress tracking, live sessions, and AI-assisted exercises.
Combined learning workflows, gamification, video communication, and AI-assisted practice in one product.
AngularNestJSPWAWebRTCAI
Fiscal integration and corporate expense operations
HR and Expense Platform Modernization
A legacy business platform enhanced with tax integrations, payment documents, account controls, and operational reporting.
Extended a production WebForms platform with fiscal workflows, external APIs, controls, and reporting.
.NET WebFormsSQL ServerREST APIsPDF generation
Fleet telemetry, routes, compliance, and active alerts
Fleet Operations Platform
A fleet-management product combining GPS telemetry, route visibility, toll data, and transport-compliance workflows.
Connected live vehicle data, maps, external services, and regulatory checks in one operational view.
Next.js.NETGPS telemetryGoogle MapsREST APIs
Cycling activity, group challenges, and community rewards
Cycling Community App
A mobile social platform for rides, group challenges, rewards, activity tracking, and partner-store engagement.
Led a cross-platform community product through AWS deployment and production release.
React NativeAWSREST APIsMobile deployment
Production and quality workflows
Manufacturing Quality Operations Platform
An operational platform supporting production and quality workflows in a large process-manufacturing environment.
Delivered new operational features, introduced API boundaries around legacy interfaces, and improved query and indexing performance.
.NET WebFormsSQL ServerJavaScriptREST APIs
Technical specifications and manufacturing execution
Manufacturing Specifications and MES Modernization
A modern web platform for managing technical process specifications and supporting the transition toward a decoupled manufacturing execution architecture.
Built Angular and .NET features, introduced CQRS, and implemented background processing for long-running manufacturing workflows.
Angular.NETCQRSHangfireSQL Server
Warehouse inventory and mobile execution
Warehouse and Mobile Operations Platform
A warehouse-management system combining real-time inventory visibility with cross-platform mobile workflows for operational teams.
Developed inventory workflows and React Native features with barcode scanning for warehouse execution.
.NETReact NativeREST APIsBarcode scanningReal-time inventory
Quotation, pricing, and enterprise integration
Industrial Parts and Services Quotation Platform
A componentized application for preparing parts and services quotations across pricing, enterprise, and legacy systems.
Built the product from the ground up, designed granular service access, and integrated SAP, pricing engines, and legacy platforms through APIs and BFF layers.
.NETAngularSAPBFFREST APIs
Project names, visuals, and operational details are generalized where necessary to protect client and employer confidentiality.
Concept case study
Predictive maintenance for a continuous industrial process
A proposed monitoring and machine-learning platform for a multivariable process where small changes in temperature, pressure, flow, and composition can precede equipment or product-quality failures.
Problem
Operators relied on alarms and periodic inspections, which could identify abnormal conditions only after process variables had already drifted.
Approach
MQTT carried sensor readings to .NET orchestration services, while Python models detected anomalies, estimated failure risk, and exposed maintenance signals to Angular.
Expected value
Earlier warnings could help teams investigate emerging failures, schedule maintenance windows, and reduce avoidable interruptions without replacing operator judgment.
- 01Process sensorsTemperature, pressure, flow, composition
- 02MQTT telemetryTimestamped readings and equipment state
- 03.NET orchestrationValidation, storage, APIs, alert routing
- 04Python ML serviceAnomaly detection and failure-risk scoring
- 05Angular operationsTrends, alerts, explanations, maintenance view
Modeling focus
A baseline model would learn normal multivariable behavior, flag deviations, and combine recent trends with operating context to estimate the likelihood of an upcoming failure.
Preventive maintenance
Risk scores would be shown alongside the contributing variables, recent events, and recommended investigation window so maintenance decisions remain traceable and reviewable.
Skills
Tools I use in production.
C#.NET Framework.NET Core.NET 8ASP.NET MVCASP.NET CoreASP.NET Web APIASP.NET WebFormsEntity FrameworkEntity Framework CoreLINQHangfireNode.jsNestJSREST APIsSignalRAngularReactNext.jsReact NativeExpoTypeScriptJavaScriptHTML5CSS3SCSSTailwind CSSPrimeNGDevExtremeShadCN UIRxJSSQL ServerOracle DatabasePostgreSQLMongoDBMongoDB AtlasRedisTimescaleDBAzureAWSAzure App ServicesAzure FunctionsAzure SQLAzure DevOps
Azure PipelinesAzure Key VaultAzure ADApplication InsightsAWS EC2AWS LambdaAWS API GatewayAWS EventBridgeAWS CloudWatchAWS RDSAWS IAMAWS ECSAWS S3DockerDocker ComposeNginxGitHub ActionsCI/CDLinuxContainer RegistriesMSALJWTOAuth2OpenID Connect2FAAuthenticationAuthorizationCQRSMicroservicesMicrofrontendsBackend For FrontendClean ArchitectureDDDEvent-Driven ArchitectureSeparation of ConcernsMulti-Tenant ApplicationsServerlessMQTTWebRTCDatadogSerilogSonarQubeSnyk
Process before implementation
Each project begins with an analysis of the workflow, its constraints, and its failure modes.
Maintainable systems
Interfaces and code should remain clear to the developers responsible for extending them.
Operational continuity
A delivered system should remain understandable to its users and practical for the team maintaining it.