WALTER ALEXIS ZABALA
WALTER ALEXIS ZABALA

Senior QA Analyst

Open to offers · Member since 5 Oct 2026
Location
Bogotá, Colombia
Desired salary
Unspecified
Work preference
Remote Only
Experience level
Senior

About

Professional summary

I am a Senior QA Analyst with more than eight years of experience in technology and over six years specializing in software quality assurance for banking, fintech, government, telecommunications, and airport IT environments.

I design and execute functional, integration, regression, smoke, exploratory, end-to-end, UAT, and SAT tests. I focus on comprehensive business-rule coverage, early defect detection, production-risk mitigation, and reliable software releases.

I have strong experience validating REST and SOAP APIs, microservices, batch processes, and backend data through SQL Server and Oracle databases. I use Postman and SoapUI to verify data consistency, integration quality, and service behavior.

I manage the complete defect lifecycle using Azure DevOps, Jira, Zephyr, and TestLink. I work closely with development, product, business, clients, and external partners to prioritize findings and accelerate issue resolution.

I am experienced in Agile Scrum and Kanban teams and contribute through test planning, quality metrics, reporting, mentoring, and cross-functional communication. I hold ISTQB CTFL and multiple Scrum-related certifications.

I am a native Spanish speaker with intermediate English proficiency and an Electronic Control and Instrumentation Engineering background.

Skills

34 capabilities

Tech stack & tools

Working toolkit

Application Utilities

Collaboration

Experience

Career history

QA Test Analyst DB System

I lead the design and execution of more than 1,500 functional, integration, and regression tests across five projects, maintaining full coverage of business rules and identifying over 120 critical defects early.

I validate APIs, microservices, and SQL Server data using Postman and SoapUI. I also manage defects in Azure DevOps, contributing to a 35% reduction in production-reported errors and a bug escape rate below 2%.

Quality Assurance Analyst Indra - Minsait

I designed and executed complex test cases for digital banking and SAT transactional projects, ensuring alignment with technical specifications and business requirements.

I managed defect reporting and tracking through Jira and Zephyr, improving end-to-end traceability and helping reduce critical production incidents by 25%. I also mentored new development and QA team members on processes, standards, and quality tools.

Senior QA Analyst GML Software

I designed high-complexity test scenarios and validated critical requirements to ensure functional coverage, stability, and application robustness before release.

I collaborated with development teams to remove technical impediments and speed up defect resolution. I led testing operations and facilitated communication among technology, product, and business stakeholders.

Senior QA Tester ASENEG SAS

I defined quality assurance strategies and managed systematic defect discovery for critical financial applications before deployment.

I validated UI/UX interfaces, proposed preventive functional improvements, and communicated directly with key clients during UAT phases to align deliverables with agreed requirements.

Agile Tester - Delivery MOVii

I implemented Agile testing strategies using Scrum and Kanban for web and mobile platforms on iOS and Android, contributing to a 30% reduction in high-impact production incidents.

I planned and executed functional, regression, and API testing cycles through Jira. I analyzed specifications, managed defects, and coordinated with external partners to support successful software releases.

Senior QA Analyst SQA - Software Quality Assurance S.A.

I designed and executed functional and regression test plans for transactional banking applications, supporting operational stability and business continuity after software updates.

I assured critical component integration, test-environment validation, and production deployments. I generated quality reports and metrics to support product roadmap prioritization.

QA Analyst Periferia IT Group

I structured and executed comprehensive test plans and functional test cases for critical banking platforms, focused on stability, usability, and interface performance.

I validated structured data in SQL and Oracle Database environments, ensuring transaction integrity and correct data persistence. I also supported quality planning and Agile incident management with development teams.

QA Engineer SoftManagement S.A.

I executed and documented functional and integration tests, recorded evidence, and reported technical findings to support defect resolution by development teams.

I designed test cases from functional requirements and supported quality control in test environments to validate stable solutions before delivery.

QA Analyst Softesting S.A.S.

I designed and executed functional, regression, and exploratory tests to rapidly identify and mitigate critical software defects during delivery cycles.

I documented bugs, tracked their lifecycle, and performed retesting to verify that reported defects were resolved without affecting overall application behavior.

Field Operations Technician SITA Airport IT

I supervised functional testing of hardware and software in high-availability environments, managing technical acceptance and direct validation with field clients.

I installed, configured, and certified platforms and components under airport-industry connectivity and operational standards. I prepared compliance reports and test-support documentation in accordance with SLAs.

Education

Learning history

Universidad Distrital Francisco José de Caldas

Engineer, Electronic Control and Instrumentation Engineering

Degree in Electronic Control and Instrumentation Engineering.

Universidad Distrital Francisco José de Caldas

Technologist, Electronics

Technologist degree in Electronics.

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