# Oscar Patiño

Oscar Patiño is a remote worker on Himalayas, Senior Software Engineer at Apex Systems, based in Mexico.

Source: https://himalayas.app/@oscarpatio

```text
Senior Software Engineer at Apex Systems who modernized Charter Communications’ frontend, improving page performance by approximately 20%.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Mexico |
| Authorized to work in | Mexico |
| Salary expectations | 68k+ USD |
| Job categories | Software Engineer, Front End Developer, Full Stack Developer |
| Skills | JavaScript, TypeScript, SQL, React, Redux, Next.js, Jest, fastAPI, REST APIs, Ionic, AWS, EC2, Cloudwatch, GraphQL, Git, GitHub, Gitlab, Bitbucket, Jira, OpenAI Codex, Ollama, AI assisted Development, Scrum, Agile Development, Web Accessibility, WCAG, Responsive Design, C#, SQL Server, Angular, Frontend Architecture, UI UX, Performance Optimization, Accessibility |

## About

```text
At Apex Systems, I led frontend development and modernization for enterprise web applications using React and TypeScript. For Charter Communications, I contributed to a legacy application migration that improved page performance by approximately 20%, and redesigned workflows that reduced task completion time by approximately 30%.

I also integrated locally hosted LLMs with Ollama for an AI-powered chatbot. Previously, at Intela Servicios Corporativos, I contributed to a payroll platform used to manage payments for 9,000 employees; at the University of Guanajuato, I built a secure records system and developed a responsive mobile application.
```

## Experience

### Senior Software Engineer (current)

[Apex Systems](https://himalayas.app/companies/apex-systems). Sep 2021 - Present

```text
Led frontend development and modernization of enterprise web applications using React and TypeScript. Contributed to migration of a legacy application for Charter Communications, improving page performance by approximately 20% and reducing user task completion time by 30%.
```

Skills: React, TypeScript, JavaScript, AWS, GraphQL, REST-APIs, Web-Accessibility, WCAG, Agile, Ollama, LLM

### Frontend Developer

Intela Servicios Corporativos. Apr 2019 - Sep 2021

```text
Contributed to development and cloud deployment of a payroll platform managing payments for 9,000 employees. Developed frontend functionality using React, Next.js, Redux, GraphQL, Jest, and AWS within a SCRUM environment.
```

Skills: React, Next.js, Redux, GraphQL, Jest, AWS, Scrum, Agile

### Full-stack Developer

University of Guanajuato. Nov 2017 - Mar 2019

```text
Built a secure web system for 300 medical staff to manage records for 16,000 dependents using JavaScript, C#, and SQL Server. Developed a responsive mobile application for 4,000 university employees using Ionic Framework, Angular, and backend APIs.
```

Skills: JavaScript, C#, SQL-Server, Ionic, Angular, REST-APIs, Responsive-Design

## Education

### Microsoft

Foundational C#, C#

```text
Foundational C# with Microsoft, completed in May 2025.
```

### International Association of Accessibility Professionals

Certified Professional in Accessibility Core Competencies, Accessibility

```text
Certified Professional in Accessibility Core Competencies from IAAP, completed in September 2025.
```

### W3Schools

Certified React Developer, React

```text
Certified React Developer from W3Schools, completed in March 2023.
```

### Technological Institute of Celaya

Bachelor's Degree, Computer Systems Engineering. 2012 - 2016

```text
Bachelor's Degree in Computer Systems Engineering from the Technological Institute of Celaya from August 2012 to December 2016.
```

### Microsoft

Microsoft Technology Associate, Database Fundamentals

```text
Microsoft Technology Associate: Database Fundamentals, completed in October 2015.
```

### Microsoft

Microsoft Technology Associate, Software Development Fundamentals

```text
Microsoft Technology Associate: Software Development Fundamentals, completed in March 2014.
```

## Tech stack

- GitHub
- GitLab
- Bitbucket
- Ionic
- Next.js
- Jira
- Jest
- React
- JavaScript
- C#
- FastAPI
- GraphQL
- Redux
- TypeScript
- Git
- SQL
- Ollama

To contact Oscar, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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