QA & test automation

Senior backend engineer specializing in resilient distributed system components and durable execution pipelines. Proven strengths include concurrency, durability and recovery as demonstrated by the distroplane executor, journal writer/reducer and bounded-origin proxy/connection-pool components. Public code does not show traditional relational database schema evolution, large-scale ETL/data-platform work or cloud-managed IAM integrations.

Python full stack developer with experience building web applications, backend services, and REST APIs. Hands-on work includes FastAPI-based backend development, React.js frontend modules, CRUD workflows, request validation, exception handling, and SQL query optimization. Integrated OpenAI APIs into conversational applications and used Postman and Swagger/OpenAPI for API testing.

Computer Engineering graduate with practical experience building backend applications using Node.js and .NET, including data storage with PostgreSQL and containerized deployments. Completed IT infrastructure support training focused on Linux server maintenance and troubleshooting plus basic networking exposure. Familiar with Azure environment configuration and Git-based CI/CD workflows through hands-on practice projects.

QA engineer with 5+ years of experience testing enterprise insurance applications on Microsoft Power Platform, including Dynamics 365 CRM (Model-Driven Power Apps) and Dataverse. Strong in functional, regression, integration, and UAT testing for policy and compliance-driven workflows, with defect management in Agile teams. Uses Selenium (Java) and TestNG for automation and Postman for API testing, and is currently building AI-assisted and Playwright-based automation capabilities.

QA professional with experience in functional, regression, system, integration, and end-to-end testing, including UAT coordination and defect triage. Hands-on with database and ETL validation, using SQL-driven backend verification, source-to-target mapping, and data quality checks. Works across test documentation (scenarios, cases, test data, and defect reports) and collaborates with developers, DB administrators, and stakeholders to resolve defects.

Cybersecurity engineer with 12 years of experience focused on vulnerability management, endpoint security, and SOC/SIEM operations, with major employment in Chile’s financial sector. Currently combines security operations with software and AI development, building AI-enabled security platforms using LLMs, RAG, and secure assistant interfaces.

Software Quality Engineer focused on manual functional, regression, UAT, and end-to-end testing across ERP, insurance, and e-commerce systems. Experienced in designing test scenarios and managing defects, including SQL database validation and REST API testing with Postman and Swagger. Currently building test automation skills.

IT Support Specialist with experience in IT support, networking, and system maintenance, and additional work in cybersecurity and data/document management. Has hands-on experience across device troubleshooting, user support, and security-focused documentation practices, plus ongoing smart building automation and LAN configuration work.

QA Automation Engineer with 10+ years of experience focused on backend and infrastructure testing. Developed Java-based automated tests for REST and gRPC services, including validation of microservice integrations and SQL-driven data checks. Hands-on experience with CI/CD (Jenkins, GitLab CI), Linux, and Kubernetes-based environments for debugging and deployment support.

Quality assurance specialist with experience delivering testing initiatives in fintech and enterprise environments. Hands-on with automated testing and test frameworks, including regression automation and API/interoperability validation. Worked in Agile teams to plan testing, manage defects, and support faster release cycles.

Software Quality Engineer focused on API and functional testing with hands-on experience using Postman. Has worked on compliance-oriented testing, collaborating with cross-functional teams to troubleshoot issues, document test work, and support release quality in Agile environments.

Backend software engineer with nearly 5 years of experience building Java/Spring Boot systems in fintech and enterprise communications. Sole engineer responsible for a customer data platform serving banks and fintech clients, including Kafka-based transaction processing up to 500 TPS. Built integrations, targeting/campaign features, and production monitoring using Grafana, Prometheus, and Sentry.

Software developer focused on ERP and production process integrations, including order-to-production-to-export data flows. Works on database development and reporting using SQL Server, and has professional experience building and maintaining enterprise applications with C# and Python.

Software engineer with experience building and maintaining backend components for real-time financial risk processing. Also built a full-stack quantitative trading and backtesting platform and a voice-controlled alarm clock project using speech recognition techniques.

Full Stack AI Developer with 3+ years of experience building enterprise applications and AI-powered solutions. Strong in Python backend development, REST APIs (Django/DRF and FastAPI), and RAG/LLM application development using LangChain and LangGraph. Developed React/Next.js frontend modules and implemented authenticated, secure workflows integrating multiple LLM providers.

Senior production support and application support engineer with experience supporting enterprise systems and telecom BSS/OSS platforms. Handles incident management, root-cause investigation, and release validation while coordinating with engineering and SRE/DevOps teams. Also builds prompt-driven automation prototypes using Cursor to streamline support and change validation workflows.

Computer science graduate with hands-on experience validating production data flows, troubleshooting REST API-connected systems, and coordinating issue resolution through testing and release checks. Worked on Flutter production support and intern development, and contributed to full-stack SaaS project work involving Supabase/PostgreSQL and API/data integration. Focuses on discrepancy investigation, reconciliation of expected vs actual outcomes, and clear documentation across technical teams.

Java full stack developer with 3.5+ years of experience building and supporting enterprise web applications. Hands-on with Java, Spring Boot, microservices, REST APIs, Angular, and event-driven systems using Apache Kafka. Also worked on databases (PostgreSQL/Oracle/MySQL), caching with Redis, and production support with AWS CloudWatch plus DevOps tooling like Docker, Jenkins, Terraform, and Ansible.

ISTQB-certified Senior QA Engineer with 5+ years of experience in functional, UI/UX, regression, accessibility, and technical SEO testing in Agile teams. Experienced with enterprise CMS testing workflows and content validation in Sitecore and Adobe Experience Manager, along with Drupal and migration-related QA. Strong background in defect management and QA reporting using Jira and test execution across multiple devices and browsers.

A frontend-focused app engineer (middle level) who builds local-first desktop UI with careful TypeScript and CSS craftsmanship. The strongest proven skill is building a polished, local-first notes UX and safe Markdown conversion as evidenced by Notes/src/lib.ts (Tauri/localStorage backend abstraction, save/restore) together with Notes/src/markdown.ts (marked + DOMPurify + Turndown usage). There is limited evidence of complex async state management, automated tests, server-state patterns, or advanced performance instrumentation in the publicly visible code.