Stabilize and scale Perl systems

Legacy Perl, search/ETL, monitoring, and recovery of unstable AI prototypes – from assessment to production-ready.

25+ years experience · 20+ clients · 10,000+ practice hours · 15+ years running 8h.sk

Discuss a project View 8h.sk case study

perl_expert.pl

use strict;
use warnings;

package PerlExpert;
# snapshot: roles & stack keywords

sub new {
    my $class = shift;
    my $self = {
        experience => 25,
        practice   => 10000,
        clients    => '20+',
        roles => [
            'Tech lead · Perl/C · Python PHP Lua stacks',
            'DevOps · Proxmox Ceph OpenShift · IaC CI/CD',
            'Obs · telemetry tuning · uptime at scale',
            'Search · Solr OS · ETL · RAG/IR',
            'Recover · vibe AI PoCs → prod tests modular',
        ],
        langs       => [ qw( Perl C Lua PHP Python Java Go TypeScript Node ) ],
        data_search => [ qw( Solr OpenSearch Typesense Postgres Timescale ETL ) ],
        infra       => [ qw( Proxmox Ceph K8s OpenShift Ansible Terraform Docker Podman ) ],
        observe     => [ qw( Prometheus Grafana Loki SigNoz Checkmk OpenTelemetry ) ],
        cloud       => [ qw( Kong CDN Microservices HAProxy ipvs iTOP SSO ) ],
        ai          => [ qw( RAG LiteLLM Ollama OpenWebUI extract ) ],
    };
    bless $self, $class;
    return $self;
}

1; # End of PerlExpert

About

Experienced Perl specialist focused on robust systems: legacy Perl, high-traffic distributed environments, search/ETL, monitoring, and stabilizing rapidly prototyped AI/LLM applications.

Primary language German; English by agreement.

Years of Experience

10000+

Hours of Practice

20+

Happy Customers

Expertise

• Legacy PERL Code Maintenance
• PERL Performance Optimization
• PERL Security & Compliance
•
Technical Lead / Systems Development
Distributed high-traffic systems – bridge from C/Perl to Python, PHP, Lua.
•
Observability / Monitoring
- →Prometheus, Grafana, Loki, SigNoz
- →Checkmk, OpenTelemetry, ELK
•
Search, ETL & RAG
Solr, OpenSearch, PostgreSQL/TimescaleDB, ETL/XSLT, RAG pipelines.
•
Technical Recovery & AI Refactoring
Stabilize rapidly prototyped AI/LLM apps – tests, modularization, CI/CD.
•
AI + ETL / Data Pipelines
Extraction, transformation, enrichment (LiteLLM, Ollama, RAG).
•
Cloud & Platform Architecture
- →Kong, CDN, microservices, HAProxy/IPVS
- →CMDB (iTOP), SSO/SAML
• Consulting: technical strategy, due diligence, mentoring
•
DevOps & Infrastructure
- →Proxmox, Ceph, OpenShift, Docker, K8s
- →CI/CD, IaC, AWS/GCP/Azure
•
Database Solutions
- → PostgreSQL Development & Optimization
- → MySQL/MariaDB Administration
- → Database Migration & Upgrades
•
Migration Services
- → PERL to Python Migration
- → Database Version Upgrades
- → Legacy System Modernization

Our PERL Projects

Rolling Upgrade Automation

Scientific Games GmbH

Automated system for managing rolling upgrades across distributed environments, ensuring zero-downtime deployments.

System Actions Automation

Scientific Games GmbH

Framework for automating complex system operations and maintenance tasks across multiple environments.

Black-box Testing Suite

Scientific Games GmbH

Advanced testing framework with automated test generation capabilities for comprehensive system validation.

Infrastructure IAM Tool

Hewlett-Packard

Custom identity and access management solution for enterprise infrastructure management.

ETL Tool Consolidation

Cashpoint Agentur & IT Service GmbH

Optimized and consolidated legacy ETL processes, significantly improving data processing speed and reliability.

Script Migration

Douglas Informatik & Service GmbH

Comprehensive script migration and upgrade services for legacy systems.

E-commerce Platform

Jochen Schweizer GmbH

Maintenance and integration of e-commerce platform with various business systems.

Web Scraping Tool

8h.sk

Slovakia job search – Perl, Solr, PostgreSQL. Details: side projects

Monitoring Maintenance

IONOS SE

Comprehensive monitoring system maintenance and optimization services.

Additional Expertise

Cloud Inventory System

cloudinventar.io & Superbet RO

Public, Private Cloud and On-Premise environment inventorization with ITSM synchronization.

SQL Optimization

payout.one

Database structure and query optimization for fintech payment processing system.

MariaDB Connector

Orange

Custom ETL processor connector development for MariaDB integration.

Prometheus Monitoring

Superbet RO

Heterogeneous multi-tenant monitoring system architecture with Prometheus federation and ITSM iTOP integration.

DevOps Consulting

Medlibre.ai / VirtualPatient.ai

Technical consulting and DevOps implementation for healthcare AI platform.

MLS Synchronization

mlsync.io

Complete backend development with MLS to PostgreSQL RESO/RETS synchronization implementation.

VMWare Migration

Superbet RO

Complete migration from multiple VMWare nodes to Proxmox/CEPH cluster infrastructure.

Successful Side Projects

8h.sk – Slovakia Job Search

Since 2008 · owner-operated · Perl, Solr, PostgreSQL/TimescaleDB

15+ years of continuous maintenance and evolution: from RSS aggregator to full-text search across many job boards – including ETL, Solr tuning, and AI-assisted data enrichment.

~300k

visitors/month

~650k

visits/month

~1.5M

pageviews/month

Contact Us

+43 720 775 277

📅 Schedule Meeting

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