# Jairo Zabala

Jairo Zabala is a remote worker on Himalayas, Applications Support Senior Analyst at Citi, based in Colombia.

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

```text
Payments support specialist at Citi who designed 100+ business-impact alerts for payment flows.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Colombia |
| Authorized to work in | Colombia |
| Salary expectations | 60k+ USD |
| Job categories | Payments Support Specialist, Application Support Analyst, Technical Support Analyst |
| Skills | Production Support, Postilion Real Time Framework, POS transaction processing, Payment Switching, Payment Schemes (Visa Mastercard), Transaction Failure Analysis, Root Cause Analysis, ITIL Incident Management, Problem Management, IT Change Management, Monitoring And Alerting, Release Readiness, Oracle, MongoDB, SQL |
| LinkedIn | https://linkedin.com/in/jairo-zabala-contreras-6174a7120 |
| GitHub | https://github.com/jjzabalac |

## About

```text
At Citi, I supported a global bank’s payments platform across 60+ applications, 20+ payment schemes, and four regions. I resolved production incidents through transaction-flow analysis and root cause analysis, and designed 100+ business-impact alerts to detect anomalies before clients were affected.

At ACI Worldwide (via iEnergizer), I supported the Postilion Real-Time Framework for banks, financial institutions, and consumer brands running POS networks. I diagnosed transaction-processing issues end to end and coordinated fixes with development, QA, and account teams.
```

## Experience

### Applications Support Senior Analyst

[Citi](https://himalayas.app/companies/citibank-switzerland-ag). Jul 2023 - Sep 2026

```text
Maintained a global bank's payments platform with 60+ applications, 19+ production databases, and 20+ payment schemes across 4 regions. Resolved transaction failures through root cause analysis, designed 100+ monitoring alerts, and took 4 high-volume clients to production.
```

Skills: Payments, ITIL, Incident-Management, Problem-Management, Change-Management, Root-Cause-Analysis, ServiceNow, Grafana, Splunk, AppDynamics, SQL, Pl-SQL, Oracle, MongoDB, MS-SQL-Server, Unix-Linux, Python, Java

### Technical Support Analyst

[ACI Worldwide](https://himalayas.app/companies/aci-worldwide). Oct 2025 - Aug 2026

```text
Supported Postilion Real-Time Framework for banks, financial institutions, and global consumer brands running POS networks. Diagnosed transaction-processing issues end to end and coordinated fixes with development, QA, and account teams.
```

Skills: Postilion-Real-Time-Framework, Payment-Switching, Transaction-Processing, Root-Cause-Analysis, Knowledge-Base, ServiceNow

### Data Scientist

Multigeocat SAS. Jan 2022 - Apr 2024

```text
Developed predictive models in Python and created Power BI and Tableau dashboards for business decisions.
```

Skills: Python, Power-BI, Tableau, predictive-modeling, Data-Science

### App Support Engineer, Intermediate Analyst

[Citi](https://himalayas.app/companies/citibank-switzerland-ag). Jul 2022 - Jul 2023

```text
Supported business-critical financial applications and handled production incidents and requests.
```

Skills: Application-Support, Incident-Management, Production-Support

### IT Analyst

[Concentrix](https://himalayas.app/companies/concentrix). Jan 2022 - Jul 2022

```text
Led a team of 8 supporting about 800 devices and network equipment. Completed the asset-control systems migration ahead of schedule.
```

Skills: IT-Support, Team-Leadership, Asset-Management, Network-Equipment

### Technology Manager

GHL Hotel Montería. Apr 2019 - Jun 2020

```text
Headed the technology area with a team of 5, managing the ERP database (MS SQL Server), telecom projects, and an Android access-control product.
```

Skills: MS-SQL-Server, ERP, Telecommunications, Android, Team-Leadership

### Java Developer

Multigeocat SAS. Mar 2018 - May 2020

```text
Led a team of 5 building Java applications on MS SQL Server and introduced automated testing.
```

Skills: Java, MS-SQL-Server, Testing-Automation, Team-Leadership

## Education

### Universidad El Bosque

Master of Science, Applied Statistics and Data Science

```text
Pursued a Master of Science in Applied Statistics and Data Science, completing in 2025.
```

### Universidad de Córdoba

Bachelor of Science, Systems Engineering

```text
Earned a Bachelor of Science in Systems Engineering, ranking first among 86 graduates.
```

## Tech stack

- Splunk
- Tableau
- MongoDB
- Oracle
- Jira
- Python
- Java
- Grafana
- Linux
- AppDynamics
- SQL
- ServiceNow
- Android
- Power BI

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

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