SAN JOSÉ, COSTA RICA · REMOTE US EXPERIENCE PERSONAL PORTFOLIO · 2026

SYSTEMS ENGINEER · SOFTWARE DEVELOPMENT + QUALITY ENGINEERING

FABIÁN SÁNCHEZ MUÑOZ

Senior Software Engineer C# / .NET · QA Automation

I build enterprise software with C#/.NET and bring a quality-engineering mindset into every release — architecture, APIs, SQL performance, CI/CD, automation and production reliability.

View experience↓ Download CV · EN / ES↘
fabiansm.02@hotmail.com LinkedIn ↗ GitHub ↗
ENGINEERING PROFILE CR / REMOTE
01SOFTWARE ENGINEERINGC# · .NET 8 · ASP.NET MVC · REST
02QUALITY ENGINEERINGSelenium · POM · API · Integration
03DATA & PERFORMANCESQL Server · T-SQL · Optimization
04DELIVERY & OPERATIONSAzure DevOps · CI/CD · IIS
OPEN TO MID-SENIOR / SENIOR OPPORTUNITIES
15+enterprise applications in production
25%+performance improvement
40%deployment time reduction
50%+regression cycle reduction
30%fewer production defects
01PROFILE

ONE ENGINEERING PROFILE · TWO STRONG DISCIPLINES

I build software.
I also engineer confidence in the release.

My core is software engineering on the Microsoft stack: C#, .NET, ASP.NET MVC, APIs, SQL Server and production systems. I have led end-to-end delivery, architectural decisions, database optimization, IIS deployments and modernization work.

At the same time, hands-on QA automation experience with Selenium, API testing and CI/CD gives me a second lens: how a system will be validated, where it can fail, and how to make releases safer before production.

DEV / 01Software Engineering

Designing and owning enterprise applications from requirements to production, with emphasis on maintainability, performance and clear architecture.

  • C# / .NET Core / .NET 8 / ASP.NET MVC
  • REST APIs, microservices and modular architectures
  • SQL Server tuning, stored procedures and indexing
  • IIS production environments and legacy modernization
QA / 02Quality Engineering & Automation

Building quality into delivery through automation, API and integration validation, reusable test design and close collaboration with development teams.

  • Selenium WebDriver in C# / .NET 8 with POM
  • NUnit, xUnit, API and integration testing
  • Automated testing inside Azure DevOps pipelines
  • Regression strategy, migration validation and root-cause analysis
02PROFESSIONAL EXPERIENCE

PRODUCTION SOFTWARE · TECHNICAL LEADERSHIP · QA AUTOMATION

Experience that spans the full delivery lifecycle.

My strongest track is software engineering, complemented by direct QA and automation work for US teams. The result is a profile comfortable with both building the system and challenging its quality.

JUN 2022 — PRESENT PRODUSOFT San José, Costa Rica

Senior .NET Developer / Technical Lead

SOFTWARE ENGINEERING

Lead the design and development of enterprise-grade applications using C#, ASP.NET MVC, .NET Core and SQL Server, taking ownership from requirements and architecture through deployment, performance and production support.

  • Architect REST APIs, microservices and modular/service-oriented solutions for business integrations.
  • Optimize complex SQL Server workloads through query tuning, stored procedures, indexing and execution analysis.
  • Design Azure DevOps CI/CD pipelines, standardize releases and maintain IIS production environments.
  • Modernize legacy components and drive automation that reduces manual operational work.
15+enterprise apps running in production 25%+faster execution through optimization 40%faster deployments 85%+first-contact issue resolution
C#.NETASP.NET MVCSQL ServerRESTAzure DevOpsIIS
OCT 2023 — JUL 2024 UNISYS Remote · USA

Software QA Engineer / Automation Engineer

QUALITY ENGINEERING

Designed scalable automation frameworks in C#/.NET 8 with Selenium WebDriver and Page Object Model, integrating automated validation into Azure DevOps delivery pipelines.

  • Automated regression coverage and parallel execution to shorten validation cycles.
  • Performed API and integration testing across distributed services and complex system interactions.
  • Supported large-scale system and data migrations with consistency and reliability validation.
50%+reduction in regression testing cycles POMreusable automation standards across teams
C#.NET 8SeleniumPOMAPI TestingAzure DevOps
JUL 2022 — MAR 2023 GROUPS360 Remote · USA

Quality Assurance Engineer

QUALITY ENGINEERING

Created and executed test strategies for enterprise web platforms, built validation workflows and technical documentation, and partnered closely with developers on root-cause analysis before production releases.

  • Improved early validation and traceability through structured test cases and workflows.
  • Strengthened QA–development collaboration within Agile teams to resolve complex defects sooner.
30%fewer production defects AGILEcontinuous QA process improvement
QATest StrategyAPI TestingJiraAgile
03EXPERTISE / EDUCATION

TECHNICAL TOOLKIT

A Microsoft-centered stack,
with quality and delivery built in.

01Languages & Frameworks

C# · .NET Core / .NET 8 · ASP.NET MVC · JavaScript · Java · LINQ · Entity Framework

02Architecture & Concepts

OOP · Design Patterns · Microservices · REST APIs · Modular Architectures

03Databases & Performance

SQL Server · Oracle · T-SQL · Stored Procedures · Query Optimization · Indexing

04Cloud, DevOps & Operations

Azure DevOps · CI/CD YAML · Git · IIS · Cloud-ready Azure architectures · Bitbucket

05Automation & QA

Selenium WebDriver · Page Object Model · NUnit · xUnit · API Testing · Postman · Integration Testing

06Enterprise Tools

Jira · Trello · ServiceNow · Salesforce · Softland ERP · Crystal Reports

DEGREE Bachelor's Degree in Systems Engineering

Universidad Fidélitas · May 2018 — Apr 2021

CERTIFICATION CCNA Switching & Routing

Universidad Fidélitas · May 2018 — Aug 2018

LANGUAGES Spanish · English

Instituto de Lenguaje Intensa · Jan 2020 — Jan 2022

04CONTACT

NEXT OPPORTUNITY

Interested in roles where building well and shipping safely both matter.

I'm open to mid-senior and senior opportunities in software engineering, .NET development, technical leadership and QA automation — especially teams that value ownership across the full software lifecycle.

Emailfabiansm.02@hotmail.com↗ LinkedIn/in/fabiansm02↗ GitHub/fabiansm02↗ RésuméCV · English + Spanish↓