Skills & Tools — Danrley Pereira

AI & ML Engineer

LLM agents, RAG and machine learning end to end.

• LLM & Agents
  • LLM APIs
    • HTTP & Protocols
  • RAG
    • Embeddings
    • FAISS
      • C++
    • Math & Statistics
  • LangChain
  • LangGraph
  • LlamaIndex
  • CrewAI
  • Prompt Engineering
  • Agentic AI
  • Fine-tuning
• Vector & Retrieval
  • Embeddings
  • FAISS
    • C++
  • ChromaDB
  • Sentence-Transformers
  • Vector Databases
• Machine Learning
  • Deep Learning
    • TensorFlow
      • Python
      • Math & Statistics
    • Keras
    • PyTorch
  • Reinforcement Learning
  • scikit-learn
  • MLflow
  • Math & Statistics
• Data Science Libraries
  • Pandas
    • Python
  • NumPy
  • SciPy
  • OpenCV
• AI Platforms
  • OpenAI API
  • Anthropic API
  • Azure OpenAI
  • Azure Document Intelligence
  • Hugging Face

Backend Engineer

APIs, services, messaging, ORMs and architecture.

• Python Frameworks
  • FastAPI
    • Python
  • Flask
  • Django
    • Django REST Framework
    • Python
  • Celery
    • Python
• .NET
  • .NET Core
    • C#
  • ASP.NET
    • C#
  • .NET Aspire
  • .NET MAUI
• Node.js
  • Node.js
    • JavaScript
  • Express
    • JavaScript
  • Fastify
  • NestJS
    • TypeScript
• JVM & Others
  • Spring Boot
    • Java
  • Laravel
    • PHP
  • Rust / axum
    • Rust
• API Design
  • REST
    • HTTP & Protocols
  • GraphQL / WPGraphQL
  • gRPC
  • WebSockets
    • Socket.io
      • JavaScript
    • HTTP & Protocols
  • OpenAPI / Swagger
  • API Integrations
    • Webhooks
  • XML
• Messaging & Streaming
  • Celery
    • Python
  • RabbitMQ
    • Linux & Networking
  • Kafka
  • Socket.io
    • JavaScript
  • Bull
  • AWS SQS
  • AWS SNS
  • AWS EventBridge
  • Azure Service Bus
  • GCP Pub/Sub
  • Redis
    • Linux & Networking
• ORMs & Data Access
  • SQLAlchemy
    • Python
    • SQL
  • Alembic
  • Entity Framework
    • C#
    • SQL
  • Dapper
    • C#
  • Typegoose
    • TypeScript
  • Mongoose
    • JavaScript
  • Prisma
• Architecture & Microservices
  • Microservices
    • Microservices
    • Sidecar
    • Service Mesh
    • Service Discovery
    • API Gateway
    • Circuit Breaker
    • Bulkhead
    • Saga
  • Patterns & Styles
    • CQRS
    • Event Sourcing
    • Event-Driven Architecture
    • Domain-Driven Design
    • Hexagonal Architecture
    • Clean Architecture
• Auth & Identity
  • Protocols
    • OAuth2
    • OIDC
    • SAML
    • JWT
    • PKCE
    • MFA
    • SSO
  • Providers
    • Auth0
    • Microsoft Entra
    • Microsoft Graph
    • Argon2
• Payments & Integrations
  • Stripe
  • Adyen
  • Mercado Pago
  • PayPal
  • IUGU
  • Webhooks
• Languages
  • Python
  • C#
  • Java
  • PHP
  • Rust
  • Go
  • SQL
  • C++

Data Engineer

Databases, warehouses, search and ETL pipelines.

• Data Science Libraries
  • Pandas
    • Python
  • NumPy
  • SciPy
  • OpenCV
• ORMs & Data Access
  • SQLAlchemy
    • Python
    • SQL
  • Alembic
  • Entity Framework
    • C#
    • SQL
  • Dapper
    • C#
  • Typegoose
    • TypeScript
  • Mongoose
    • JavaScript
  • Prisma
• Relational Databases
  • PostgreSQL
    • pgAdmin
    • SQL
  • MySQL
  • SQL Server
  • SQLite
  • Oracle
  • MariaDB
• NoSQL & Cache
  • MongoDB
  • Redis
    • Linux & Networking
  • Cosmos DB
  • DynamoDB
• Warehouse & Lake
  • Snowflake
    • SQL
  • BigQuery
  • MinIO
  • AWS Glue
  • Data Lake
• ETL & Processing
  • Pandas
    • Python
  • Celery
    • Python
  • ETL Pipelines
  • Airflow
  • dbt
• Search & Analytics
  • OpenSearch
  • Elasticsearch
• DB Tools
  • pgAdmin
  • DBeaver
  • DataGrip

Frontend Engineer

Web and mobile interfaces.

• Frameworks
  • React
    • Next.js
      • TypeScript
    • React Hooks
    • React Native
    • Redux
    • Redux Toolkit
    • Zustand
    • React Query
    • Context API
    • JavaScript
  • Vue
    • Nuxt
      • TypeScript
    • Vuetify
    • Pinia
    • Vuex
    • JavaScript
  • Angular
    • AngularJS
    • RxJS
    • NgRx
    • TypeScript
  • Svelte
  • Polymer
• Mobile & Desktop
  • .NET MAUI
  • React Native
  • Ionic
    • TypeScript
  • Flutter
  • Swift
  • Kotlin
  • Electron
• State Management
  • RxJS
  • Redux
  • Redux Toolkit
  • Zustand
  • MobX
  • React Query
  • Context API
  • Pinia
  • Vuex
  • NgRx
• UI & Visualization
  • Vuetify
  • Material UI
  • Bootstrap
  • Tailwind
  • shadcn/ui
  • Three.js
  • Plotly
  • D3
  • Chart.js
• Languages & Markup
  • TypeScript
  • JavaScript
  • HTML5
  • CSS3
  • SASS
  • XML

Platform & DevOps

Containers, CI/CD, IaC, cloud and CLI.

• Containers & Orchestration
  • Docker
    • Linux & Networking
  • Docker Compose
  • Kubernetes
    • Linux & Networking
  • Kustomize
  • Helm
• CI/CD
  • GitHub Actions
    • Git & Version Control
  • GitLab CI
    • Git & Version Control
  • Jenkins
  • Azure DevOps
  • ArgoCD
• Infrastructure as Code
  • Terraform
    • Linux & Networking
  • OpenTofu
  • Bicep
  • Ansible
  • Pulumi
• Cloud
  • AWS
    • Compute
      • EC2
      • Lambda
      • ECS / EKS
    • Data & Storage
      • DynamoDB
      • AWS Glue
      • S3
      • RDS
    • Integration
      • AWS SQS
      • AWS SNS
      • AWS EventBridge
    • Security & Ops
      • IAM
      • CloudWatch
  • Azure
    • Azure Service Bus
    • Cosmos DB
    • AKS
    • Azure Functions
    • Key Vault
    • Blob Storage
  • GCP
    • GCP Pub/Sub
    • BigQuery
    • GKE
    • Cloud Functions
    • Cloud Storage
  • Other Cloud
    • DigitalOcean
    • Heroku
    • Firebase
    • Oracle Cloud
    • Vercel
• CLI & Linux Admin
  • Bash / Shell
  • Linux Administration
    • Linux & Networking
  • Vim
  • SSH
  • systemd / cron
  • Git CLI
    • Git & Version Control

SRE / Reliability

Observability, reliability and security.

• Auth & Identity
  • Protocols
    • OAuth2
    • OIDC
    • SAML
    • JWT
    • PKCE
    • MFA
    • SSO
  • Providers
    • Auth0
    • Microsoft Entra
    • Microsoft Graph
    • Argon2
• Search & Analytics
  • OpenSearch
  • Elasticsearch
• Observability
  • OpenSearch
  • Grafana
  • Prometheus
  • Loki
  • Tempo
  • Grafana Alloy
  • VictoriaMetrics
  • OpenTelemetry
• Reliability
  • SLO / SLI
  • Error Budgets
  • Incident Response
  • On-Call
  • Chaos Engineering
  • Alerting
  • Runbooks
• Security
  • IAM
  • OWASP
  • Secrets Management
  • TLS / mTLS
  • Threat Detection

SDET & Quality

Testing, automation and Software Craftsmanship.

• Unit & Integration
  • Pytest
    • Python
  • xUnit
    • C#
  • JUnit
    • Java
  • Jest
  • Mocha
  • Vitest
  • Testing Library
• E2E & BDD
  • Playwright
  • Cypress
  • Selenium
  • Cucumber
  • Behave
    • Python
  • Gherkin
  • Katalon
  • WebdriverIO
• Reporting & Load
  • Allure
  • k6
  • JMeter
  • Bruno
  • Postman
  • Locust
• Software Craftsmanship
  • Practices
    • TDD
    • BDD
    • ATDD
    • Coding Katas
    • Pair Programming
    • Mob Programming
  • Code Quality
    • Refactoring
    • Clean Code
    • Code Review
    • Simple Design
  • Principles
    • SOLID
    • Design Patterns
    • Clean Architecture
    • Extreme Programming
    • DRY / KISS / YAGNI
    • Data Structures & Algorithms
  • Community Leadership
• Quality Strategy
  • Test Automation
  • Test Pyramid
  • Contract Testing
  • Coverage

Soft Skills & Leadership

Communication, leadership, mindset and product.

• Communication
  • Communication
  • Public Speaking
  • Documentation
  • Written English (C2)
  • Stakeholder Management
• Leadership
  • People Management
  • Hiring
  • Mentoring
  • Training
  • Tech Leadership
  • Team Building
  • Community Leadership
• Mindset
  • Self-Driven
  • Proactive
  • Ownership
  • Entrepreneurial Mindset
  • Critical Thinking
  • Adaptability
  • Problem Solving
  • Continuous Learning
• Product & Delivery
  • Product Management
  • Agile / Scrum
  • Kanban
  • Product Discovery
  • Roadmapping
  • Go-to-Market
• Collaboration Tools
  • Figma
  • Miro
  • Jira
  • Confluence
  • Trello
  • Notion
  • Slack