FABIAN OCONITRILLO
Senior Software Development
Heredia,H
Summary
Senior Software Developer with 5+ years of experience delivering high-quality full-stack, front-end, and CMS-driven solutions across enterprise environments. I excel in environments that require ownership, debugging across the full stack, architectural thinking, and strong communication. Known for improving team velocity, raising engineering standards, and delivering large-scale redesigns under tight deadlines. Passionate about clean code, scalable systems, low-latency integrations, and polished UI/UX execution.
Professional software developer with comprehensive experience in designing, developing, and deploying high-quality software solutions. Adept at collaborating within cross-functional teams to deliver impactful results in fast-paced environments. Strong skills in programming, problem-solving, and adapting to evolving project requirements. Reliable team player known for driving success through effective communication and technical expertise.
Overview
6
6
years of professional experience
4
4
Certifications
2
2
Languages
Work History
Senior Software Developer
Konrad Group
01.2024 - Current
- Acted as both the technical lead and primary hands-on developer across Bank marketing Site, owning the delivery pipeline, builds, QA, and production releases.
- Continued to actively design, build, and refactor .NET / Razor components—extending the existing library and improving authoring workflows with reusable, well-documented patterns.
- Developed new features and enhanced existing components using ASP.NET, Razor and Typescript.
- Implemented TypeScript utilities for animations, validation logic, interactive UI behavior, and async loaders, ensuring stronger typing, fewer regressions, and cleaner front-end architecture.
- Delivered a major redesigns under tight timelines: A 6-week full-site redesign, achieved by carefully mapping component reuse, defining clear acceptance criteria, and coding.
- Reviewed code, wrote technical documentation, and mentored two developers—while continuing to contribute the most complex components and integrations personally.
- Supported production through hotfixes, release orchestration, environment syncs, and deep investigation of CMS-level issues requiring code-side fixes.
Mid Software Developer
Konrad Group
01.2022 - 01.2024
- Built a reusable Sitefinity component library (cards, banners, heroes, tables, locator tools, carousels, video players) using .NET, ASP.NET Razor, and TypeScript to ensure clean front-end logic and stronger typing across shared scripts.
- Used TypeScript to refactor UI behaviors, form validations, and dynamic component interactions, improving maintainability and reducing regressions and bugs.
- Improved authoring workflows by implementing .NET server-side rendering with TypeScript utilities, resulting in more flexible and author-friendly tools.
- Developed and maintained new implementations via script audits, TypeScript, Google Tag Manager, and Kameleoon.
- Performed CMS upgrades, security patches, and non-production environment syncs.
Associate Software Developer
Konrad Group
01.2021 - 01.2022
- Built a Slack automation bot using Node.js, TypeScript, Bolt.js, and MongoDB.
- Implemented secure webhook flows with signature validation, idempotency, and low-latency handlers.
- Deployed via Docker on AWS, configuring environment variables and a modular architecture for maintainability.
- Improved internal operations by automating repetitive workflows previously handled manually.
Junior Full Stack Developer
Inra
01.2020 - 01.2021
- Maintenance of the electronic invoicing system, developed in APEX
- Assisted with new systems development, throughout the entire Software Development Life Cycle
- Responsible for the migration of an account module in ERP system from Oracle Forms to .Net Core
- Tasks include migration of the database using SSMA, creation of front base project using MVC, support in the backend API project
Education
Master's Degree - Software Engineer Applied to AI
UCenfotec
01.2025
Bachelor's Degree - Computer Systems
UCenfotec - Fidelitas University
01.2022
Bachelor's Degree - Economics
University of Costa Rica
01.2018
Skills
NET
Accomplishments
- Website Feature Optimization: Increased website efficiency by 30% through feature optimization.
- Client Website Redesign: Redesigned full client website, boosting user engagement by 25%.
Certification
CNNA Routing and Switching
Timeline
Senior Software Developer
Konrad Group
01.2024 - Current
Mid Software Developer
Konrad Group
01.2022 - 01.2024
Associate Software Developer
Konrad Group
01.2021 - 01.2022
Junior Full Stack Developer
Inra
01.2020 - 01.2021
Bachelor's Degree - Computer Systems
UCenfotec - Fidelitas University
Bachelor's Degree - Economics
University of Costa Rica
Master's Degree - Software Engineer Applied to AI
UCenfotec
TRAINING / COURSES
AI Solutions on AWS Cloud