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Professional summary

Engineer with 20 years in IT and infrastructure, the last 3 focused on AI systems in production. I design and deploy LLM-based solutions, RAG architectures with vector databases, and multi-agent AI systems on AWS and Azure. I’ve built over 50 custom AI skills, automated L1 support with RAG, and led production OS migrations for nationwide applications, working solo where others would staff a team. Strong foundation in Linux, PostgreSQL, and cloud platforms, now applied to building and operating AI-driven systems at scale.

Technical skills

AI and ML: RAG architectures, vector databases (pgvector), LLM integration and orchestration, prompt engineering, multi-agent AI systems, reasoning strategy design (chain-of-thought, tree-of-thought, reflexion), model output evaluation, AIOps, AI workflow automation

Programming: Python (automation, data processing, scripting), TypeScript, SQL, Bash, Go

Cloud platforms: AWS (EC2, S3, Lambda, IAM, SSO, CloudWatch), Azure (VMs, Arc, ARM templates, Monitor, App Service)

Databases: PostgreSQL (pgvector, advanced tuning, replication), Oracle (performance optimization), MongoDB (replica sets, production clusters)

Infrastructure: Docker, Kubernetes, Jenkins, GitHub Actions, CI/CD pipelines, Terraform, Ansible, HashiCorp Vault

OS: Linux (RHEL, Ubuntu, Debian), 20 years hands-on

Professional experience

Consultant / Application Specialist, CGI

March 2024 - Present | Poland, remote

AI and automation

  • Designed and deployed an internal RAG system with vector databases (pgvector) and LLMs to automate L1 support for documentation, reducing resolution time
  • Built an AI-powered development environment with 50+ custom skills covering incident diagnosis, code analysis, content generation, and automated reporting
  • Architected a multi-agent AI orchestration system with specialized agents for production troubleshooting, deployment verification, log analysis, and technical documentation
  • Implemented 9 reasoning strategies (chain-of-thought, tree-of-thought, reflexion) with automatic selection based on problem type, improving AI output quality for complex operations
  • Created automated AI content pipelines: technical writing, translation, image generation, and quality validation

Infrastructure and cloud

  • Managed critical logistics platforms ensuring high availability for millions of daily transactions
  • Led two production RHEL 7 to 9 migrations for nationwide applications (4 servers each, PHP/Java/Oracle/SELinux), completed solo in under two weeks each
  • Managed Kubernetes clusters for a government-regulated e-invoicing platform serving international markets
  • Operated MongoDB replica sets (3-node production) with automated failover and monitoring
  • Performed advanced tuning of PostgreSQL and Oracle databases for heavy-load environments
  • Maintained AWS and Azure infrastructure across multiple international client environments

Application Specialist, Posti Messaging Polska

September 2023 - March 2024 | Torun, remote

  • Managed core logistics platforms supporting millions of daily transactions for a Nordic enterprise
  • Performed advanced PostgreSQL and Oracle database tuning for high-load production environments
  • Maintained Linux RHEL infrastructure with Jenkins CI/CD, Docker containerization, and AWS/Azure cloud services

Linux and PostgreSQL Administrator, Perfektus System

August 2010 - June 2023 | Kielce, on-site

  • Managed Linux server infrastructure and PostgreSQL databases for 13 years, ensuring high performance and reliability across client environments
  • Implemented security measures: data encryption, access control, activity monitoring, and GDPR compliance as Data Protection Officer
  • Optimized system and database configurations for performance and scalability under growing workloads
  • Designed and delivered IT solutions for clients, translating business requirements into technical implementations
  • Built automation using Jenkins, Bash, and Python to streamline deployments and maintenance

Quality Control Lab / Public Procurement, Perfektus SA

November 2008 - June 2010 | Kielce, on-site

  • Designed hardware configurations for new computer production lines
  • Prepared technical specifications and participated in public procurement tenders

Service Manager, Action Radom

September 2005 - October 2008 | Kielce, on-site

  • Administered local and client networks, managed service operations

Independent projects

Self-hosted AI infrastructure: Home server running Docker containers for AI task automation, workflow orchestration, secret management (Vault), RAG knowledge base, and network services. Full production setup, managed solo.

Technical blog (tomakl.dev): Bilingual engineering blog on AI and infrastructure. Auto-deployed via GitHub Actions, cover images generated by AI, entire publishing pipeline automated.

AI-powered content pipeline: Automated LinkedIn publishing system generating and posting technical AI/ML content 3x per week using custom automation tasks and web research integration.

Certifications

  • Certified Kubernetes Administrator (CKA), in progress (expected 2026)

Languages

  • Polish (native)
  • English (professional working proficiency)