# Rayan Heider

Rayan Heider is a remote worker on Himalayas, PL/SQL Developer at HudHud Maps, based in Germany.

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

```text
Oracle APEX and PL/SQL developer who delivered production web applications at merlin.zwo InfoDesign GmbH & Co. KG, from requirements to release.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Germany |
| Authorized to work in | Germany |
| Salary expectations | 40k+ EUR |
| Job categories | Database Developer, PL SQL Developer, Software Developer |
| Skills | Oracle APEX, Pl SQL, Oracle Database, SQL, ETL, REST APIs, Relational Data Modeling, Requirements Analysis, OCI Autonomous DB, Python, Pydantic, HTML, CSS, JavaScript, BASH |
| Portfolio | https://github.com/ray-ka |
| LinkedIn | https://linkedin.com/in/rheider |
| GitHub | https://github.com/ray-ka |

## About

```text
At merlin.zwo InfoDesign GmbH & Co. KG, I designed and built data-centric web applications in Oracle APEX, taking them from business requirements through production release. I also wrote and tuned PL/SQL and SQL, and built ETL routines and REST interfaces connecting applications to surrounding systems.

On a paid remote contract with HudHud Maps, I developed and optimized PL/SQL database solutions. Earlier, at DZ Service GmbH, I supported approximately 200 users, administered Active Directory and Microsoft 365, and built an internal knowledge base. My projects include an Oracle PL/SQL order-to-cash demo and a Python data pipeline.
```

## Experience

### PL/SQL Developer

HudHud Maps. Jan 2026 - Apr 2026

```text
Developed and optimized PL/SQL database solutions on a paid remote contract.
```

Skills: Pl-SQL, Oracle-Database, SQL, Database-Development

### Software Developer – Oracle APEX / PL/SQL

merlin.zwo InfoDesign GmbH & Co. KG. Nov 2022 - Mar 2025

```text
Designed and built data-centric web applications in Oracle APEX on Oracle Database, from requirements gathering to production release. Wrote and tuned PL/SQL packages, procedures, and complex SQL, and built ETL routines and REST interfaces.
```

Skills: Oracle-APEX, Pl-SQL, SQL, Oracle-Database, ETL, REST, Bulk-Collect, FORALL, Cursor, Exception-Handling, Technical-Documentation, Requirements-Analysis, Agile, Scrum

### IT Coordinator & 1st/2nd-Level Support

DZ Service GmbH. Mar 2020 - Jan 2022

```text
First point of contact for approximately 200 users, handling incident logging, categorization, and prioritization. Administered Active Directory and Microsoft 365, coordinated procurement and rollouts, and maintained the internal knowledge base.
```

Skills: Active-Directory, Microsoft-365, Incident-Management, Ticketing-Systems, User-Management, Permissions, Account-Provisioning, Device-Setup, IT-Support, Knowledge-Base-Management

## Education

### Microsoft

Introduction to Secure Networking, Networking. 2026 - 2026

```text
Completed the Introduction to Secure Networking course from Microsoft in 2026.
```

### Google

Google Cybersecurity Professional Certificate, Cybersecurity. 2026 - 2026

```text
Completed the Google Cybersecurity Professional Certificate in 2026.
```

### Chamber of Engineers Baden-Württemberg (INGBW)

B.Eng., Mechanical Engineering. 2015 - 2019

```text
B.Eng. in Mechanical Engineering, recognized by the Chamber of Engineers Baden-Württemberg (INGBW), Germany.
```

## Tech stack

- Jira
- JavaScript
- Python
- PowerShell
- Confluence
- Git
- SQL
- Pydantic
- Bash

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

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