Senior AWS Cloud Engineer | Full Stack & Data Engineer at Talkdesk Portugal

Architected distributed microservices using Java 21 (Spring Boot 3.x), .NET 8, Node.js 20 (NestJS 10 / Express 5), Python 3.12 (FastAPI 0.109), and Go 1.22, deployed on AWS EKS (Kubernetes 1.28–1.29). Developed high-performance frontend applications with React 18 and Next.js 14 (App Router / React Server Components). Designed event-driven architectures using Apache Kafka 3.x for real-time processing of large-scale customer interaction data streams. Built REST and GraphQL APIs with OAuth2/JWT authentication and multi-tenant RBAC. Implemented real-time analytics pipelines with Apache Spark 3.x. Optimized PostgreSQL 15–16 and SQL Server 2022. Automated infrastructure provisioning with Terraform 1.6–1.7 and containerized microservices with Docker 23–24 and Kubernetes. Introduced blue-green and rolling deployment strategies, distributed caching with Redis, and observability using OpenTelemetry, Prometheus, and Grafana.

Senior AWS Cloud Engineer | Full Stack & Data Engineer at IBM

Architected scalable SaaS platforms using Java 17 (Spring Boot 2.6–3.1), Node.js 16–18, and Go 1.19–1.21, deployed on AWS EKS (Kubernetes 1.23–1.27). Built enterprise frontend platforms with React 17–18, TypeScript 4.x, Redux Toolkit, and Material UI. Designed data ingestion and ETL pipelines with Apache Airflow 2.x, Apache Spark 3.x, and Python 3.9–3.11. Implemented event-driven microservices with Apache Kafka 3.x, automated provisioning with Terraform 1.3–1.5 and AWS CloudFormation. Optimized PostgreSQL 13–15 and MySQL 8.0. Implemented Redis caching, containerized platforms with Docker 20–23 and Kubernetes 1.23–1.27. Built CI/CD pipelines with Jenkins, GitHub Actions, and GitLab CI/CD; implemented resilience patterns and monitoring with Prometheus, Grafana, and ELK Stack.

Backend & Data Platform Engineer at KCS iT

Designed data ingestion pipelines for analytics workloads (Python and SQL processing), implemented caching with Redis, containerized services with Docker 19–20, and reverse proxy infrastructure with Nginx. Added centralized logging and monitoring for distributed microservices, refactored legacy APIs for modularity, and enabled horizontal scaling. Collaborated with frontend teams on API design and data contracts; mentored junior engineers on microservices architecture and scalable backend design.

Junior Front End Developer at Upwork Portugal

Integrated React 15/16 frontends with REST APIs to enhance staff productivity tools. Built reusable UI components with React 15–16 and JavaScript ES6, migrating legacy jQuery apps to modern React architectures. Improved UI responsiveness and validation, implemented caching and performance improvements, and supported basic CI workflows.

Senior Full Stack Engineer | Cloud-Native Architect at Talkdesk

Standardized backend architecture patterns and introduced API versioning strategies for enterprise integrations. Enhanced observability through structured logging, distributed tracing, and performance dashboards. Built distributed microservices using Java 21 (Spring Boot 3.x), .NET 8, Node.js 20 (NestJS 10 / Express 5), Python 3.12 (FastAPI 0.109), and Go 1.22 deployed on AWS EKS (Kubernetes 1.28–1.29). Developed enterprise frontend applications using React 18 and Next.js 14 (App Router, RSC). Designed secure REST and GraphQL APIs with OAuth2/JWT authentication and multi-tenant RBAC architecture. Optimized database workloads using PostgreSQL 15–16 and SQL Server 2022, improving throughput under high concurrency traffic. Managed Infrastructure as Code using Terraform 1.6+, Docker 23–24, and GitHub Actions CI/CD pipelines. Implemented blue-green and rolling deployments across Kubernetes clusters to minimize production downtime. Improved system observability using structured logging

Senior AWS & DevOps Engineer / Full Stack Engineer at IBM

Architected scalable SaaS platforms using Java 17 (Spring Boot 2.6–3.1 migration), Node.js 16–18, and Go 1.19–1.21, deployed on AWS EKS (Kubernetes 1.23–1.27). Developed modern frontend features using React 17–18 with TypeScript 4.x, improving client-side performance and maintainability. Automated infrastructure provisioning using Terraform 1.3–1.5, reducing environment setup time. Implemented caching and asynchronous messaging patterns using Redis and event-driven architectures. Optimized relational databases using PostgreSQL 13–15 and MySQL 8.0; designed CI/CD pipelines using Jenkins 2.x, GitHub Actions, and GitLab CI/CD. Implemented resilience patterns including circuit breakers, retry policies, and API rate limiting for production stability.

Backend Engineer at KCS iT

Migrated legacy monolithic architecture to microservices-based ecosystem using Node.js 10–14 and Python 3.7–3.9 (Django 2.x–3.x). Built secure REST APIs using Python 3.7–3.9 and Node.js 12–14, integrated with React frontends. Designed caching and asynchronous processing pipelines to improve backend efficiency and reduce response latency. Reduced database query latency via indexing and query plan optimization using PostgreSQL 10–12 and MySQL 5.7. Implemented centralized logging and monitoring using Docker-based deployments and reverse proxy configurations via Nginx. Refactored legacy APIs to improve modularity and maintainability across distributed services. Mentored junior engineers on microservices design, REST API standards, and scalable frontend integration patterns.

Junior Front End Developer at Upwork

Integrated React frontends with REST APIs to enhance staff productivity tools. Developed reusable UI components using React 15–16 with JavaScript ES6, integrated with backend APIs built in .NET Framework 4.6+ and Java 8 (Spring MVC). Improved UI responsiveness and validation mechanisms using Bootstrap and optimized DOM rendering techniques. Assisted in migrating legacy jQuery-based applications to modern React-based architecture. Implemented caching and performance optimizations for improved system responsiveness. Assisted in migrating legacy applications to modern, scalable web architectures. Developed reusable UI components to accelerate frontend development. Enhanced UI responsiveness through DOM optimization techniques and improved accessibility compliance for enterprise clients.

Senior Full-Stack Engineer | AI & Cloud Architect at Talkdesk

Designing AI-enabled enterprise solutions by integrating LLM-based document summarization and intelligent search into internal knowledge systems; building Retrieval-Augmented Generation (RAG) pipelines with LangChain and vector embeddings; orchestrating multi-step AI workflows with LangGraph; implementing prompt evaluation, tracing, and observability with LangSmith; prototyping AI pipelines with LangFlow; integrating OpenAI and Azure OpenAI backends; developing AI-powered dashboards with React/Next.js; deploying AI microservices on AWS with autoscaling; provisioning infrastructure with Terraform and establishing CI/CD; collaborating with data teams on secure authentication and compliance for AI inference.

AI Solutions Engineer | Full-Stack & Cloud at IBM

Designed cloud-native AI-ready architectures for enterprise digital transformation; built API platforms integrating ML inference services with frontend applications; developed scalable dashboards with React/Next.js; implemented backend services using Node.js, Java, and Python; deployed Kubernetes on AWS EKS with autoscaling and observability; established distributed logging, monitoring, and optimized data pipelines for latency; implemented secure OAuth2/JWT authentication and Terraform-based infrastructure automation; delivered cloud modernization programs for Fortune 500 clients.