Raphael Santos
Open to remote & hybrid opportunities

Raphael Kaíque Dias Santos

Backend Software Engineer · PHP/Symfony · TypeScript/NestJS · Go · Cloud

Backend-focused engineer building software professionally since 2020. I design and ship APIs, integrations and distributed systems — from requirements and architecture to deployment and production support — with hands-on experience in IoT, telecom, real-time communication, AI/computer vision and remote teleoperation of autonomous vehicles.

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6+ yrsbuilding software
4industries: IoT, telecom, AI, heavy equipment
BackendAPIs · data · infra
PT / ENnative · professional

About

I work across backend services, APIs, databases, cloud and infrastructure, and I'm comfortable integrating software with operational and industrial systems. My day-to-day spans the full lifecycle: requirements analysis, system design, implementation, testing, CI/CD, troubleshooting and root-cause analysis in production. I care about maintainable code — SOLID, DDD, Clean/Hexagonal Architecture and TDD — and about systems that scale.

Core technologies

Backend
PHPSymfonyLaravelTypeScriptNode.jsNestJSGoGinJavaSpring BootC#/.NETPython
Databases
PostgreSQLMongoDBRedisSQLiteOracleMySQLSQL ServerNeo4j
APIs & architecture
RESTGraphQLgRPCSOAPWebSocketsMicroservicesEvent-DrivenDDDClean / HexagonalSystem Design
Testing & security
TDDPHPUnitJestUnit · integration · system testsJWTAuth0
Cloud & DevOps
Docker / ComposeAWSGCPAzureLinuxNGINXTerraformJenkins CI/CDGitHub / GitLabShell scripting
Messaging & real-time
RabbitMQMQTT / MosquittoWebRTCRTP / RTSPSIPONVIFTCP / UDP
Also
Vue / NuxtAngularReactHTMXAlpine.jsTailwindElectronIonicC / C++Qt / QMLOpenCVYOLOFFmpeg / GStreamerCAN / CANopenLLM · RAG · AI agents

Experience

Jan 2026 — Present

Development Analyst

SEESTEC Engenharia e Tecnologia
  • Build and evolve software for AI, IoT, remote teleoperation and autonomous vehicles — backend, telemetry, computer vision and distributed infrastructure.
  • Design APIs, web services and integrations with internal and third-party systems in PHP/Symfony and TypeScript/NestJS.
  • Develop real-time communication over WebSockets, WebRTC, RTP/RTSP, SIP, MQTT and ONVIF.
  • Integrate computer vision (NVIDIA Jetson, YOLO, OpenCV, Tesseract) and LLM/RAG/AI-agent capabilities.
  • Own testing, root-cause analysis, performance tuning, documentation and production support.
PHPSymfonyNestJSDockerMongoDBRedisWebRTCMQTT
Sep 2025 — Jan 2026

Development Analyst

ARQIA Telecom & IoT Latam
  • Developed and maintained software for IoT, MVNO and VoIP platforms.
  • Built REST/SOAP APIs and system integrations with PHP, C#/.NET and ASP.NET.
  • Worked with SQL Server/T-SQL, Entity Framework/LINQ and Azure (Logic Apps, Functions, Storage, API Management).
  • Collaborated in Scrum and Kanban teams with analysts, QA, designers and developers.
PHPC#/.NETSQL ServerAzure
Nov 2023 — Oct 2024

Technical Analyst

SITECH Brazil
  • Developed teleoperation imaging and remote-control software for autonomous vehicles (C/C++, Node.js, React, Python, Qt/QML, MQTT).
  • Deployed and maintained software environments and database servers; supported Linux infrastructure and network diagnostics.
  • Integrated telemetry networks and CAN/CANopen in industrial systems.
C/C++Node.jsPythonQt/QMLMQTTLinux
Sep 2020 — Nov 2023

Commercial Assistant · Automation & Data

Sotreq | CAT Latam
  • Built process-automation and data-analysis tools with VBA, ABAP and SQLite.
  • Delivered KPIs and interactive dashboards in Power BI/DAX to support commercial decisions.
Power BIDAXVBAABAP

Education

Postgraduate — Software Architecture

FIAP · Dec 2026 – Jan 2028
Software engineering, AI, databases and cloud computing.

Technology Degree — DevOps

UNIDERP — Universidade Anhanguera · Feb 2021 – Jul 2023
CI/CD, cloud, containers, observability and security.

Selected public work

study

Curated study collection across computer science and software development topics.

Client websites

Institutional sites for Power Line Engenharia Elétrica, MG Tractor and the NGO evivas.