Curriculum Vitae

Name: Jarek (Jarosław) Hartman

Location: Warsaw, Poland

jhartman@interia.pl
LinkedIn
Strava

Core stack: Kubernetes (GKE, Tanzu), Docker, GitLab/Bitbucket CI, Terraform/Helm/Kustomize, Grafana/Prometheus, Linux

Summary

Jarek has 20+ years in telecom and 15 years in technical leadership, delivering charging/monetization platforms and cloud‑native infrastructure at scale. He combines deep telco domain knowledge with hands‑on Kubernetes, private/public cloud and DevOps delivery across multiple countries. He leads end‑to‑end delivery from architecture and automation through migration, performance testing and go‑live. He also explores modern automation and AI tooling, including agentic workflows and RAG patterns. Led delivery teams up to 15+ people and coordinated multi‑country rollouts.

Work experience

2026 – now

Amdocs — Technical Architect - Leading architecture and platform modernization for cloud‑native charging and monetization workloads, with a focus on delivery tooling, release readiness and operational excellence.

2022 – 2026

MATRIXX Software, Inc. — Technical Architect - Responsible for architecture design and planning, installation upgrades, performance tests and upgrades of MATRIXX Convergent Charging & Digital Monetization in cloud‑native environments. Designed and implemented DevOps and automation pipelines, including deployment tooling and release/change management practices.

2010 – 2022

Oracle — Consulting Technical Manager - Delivering projects related to Network Charging & Control (NCC), Billing Revenue Management (BRM) and Elastic Charging Engine (ECE). Involved in pre‑sales activities (project scoping and quotation).

2006 – 2010

eServGlobal — Senior Solution Delivery Engineer - Integration of Intelligent Networks / VAS infrastructure for fixed and mobile carriers; expert knowledge of Charging Max, Message Max, VoMS, UIP/IVR.

2004 – 2006

Siemens AG (Nokia Siemens Networks) — IN Integration Engineer - End‑to‑end IN tests, on‑site integration and project leadership for VPN, MNP, GSM‑R and prepaid services in Wroclaw and Berlin.

2001 – 2004

TP S.A. — ISDN Specialist - Telecom software development, EWSD exchange maintenance, SS7/E‑DSS1 testing and Net‑7 monitoring system administration.

Professional skills

Cloud

• Very good practical skills in Container Orchestration Platforms (Kubernetes, Rancher, OC-CNE by Oracle)
• Hands‑on experience in private cloud platforms (VMware Tanzu)
• Very good practical skills in cloud Observability: Grafana & Prometheus
• Expert in Containers Technology (Docker), including applications containerization (creation of Dockerfiles, Helm charts, Kustomize deployments)
• Good practical skills in Google Cloud Platform (especially Google Kubernetes Engine, GKE)
• Expert in CI/CD and DevOps: architecture, implementation and maintenance (GitHub Actions, Bitbucket Pipelines, GitLab CI, Jenkins)
• Very good practical skills in Oracle public cloud (OCI)
• Experience with modern hosting platforms: Vercel and Cloudflare Pages

Telco

• Good knowledge of 5G SA/NSA (CHF and Nchf interfaces – N40 and N28)
• Very good knowledge of fixed and mobile (GSM) telecommunication networks
• Expert in Intelligent Network and VAS architecture
• Expert in Price Plans configuration (Prepaid & Postpaid, NCC & BRM)
• Expert in Intelligent Network services such as PPS, VPN, MNP, GSM-R, VCC, VSSP, (M)NP
• VAS systems – voucher management, IVR
• Expert in protocols such as Diameter (Gy, Sy), SCCP, TCAP, MAP, CAP, INAP, Sinap, Sigtran, SOAP/XML, REST
• Very good knowledge of protocols such as E-DSS1, ISUP, SIP, SMPP
• Expert in protocol traces analyze – expert in handling protocol analyzers such as K12 by Tektronix, Wireshark
• Experience in effort estimations – acting as a technical lead in Bids issued to eServGlobal, Oracle and MATRIXX

IT

• Expert in Linux-based operating systems (RHEL, Ubuntu). Very good knowledge of UNIX-based operating systems (Solaris 11)
• Very good knowledge in Networking and Network protocols
• Advanced pfSense administration
• Very good knowledge of virtualization platforms (Proxmox, qemu)
• Very good scripting practice (Bash)
• Very good understanding and programming in: C, C++, Objective-C, Perl, PHP, Java.
• Go (Golang) aspiring developer
• Hands‑on experience with AI agents and RAG (agentic workflows, retrieval pipelines, tool chaining, vector search)
• Good practical knowledge of n8n (open‑source, low‑code workflow automation and orchestration platform) for AI and systems integrations
• Very good knowledge in: Oracle DB and SQL
• Knowledge of desktop operating systems such as macOS

Important Projects and Customers

Education

Certifications & Trainings

• MATRIXX Certified Administrator
• MATRIXX Certified Pricing
• Selected trainings: AI and Machine Learning with Go, Concurrency in Go, Svelte & SvelteKit, Kubernetes Certified Application Developer (CKAD), Certified Kubernetes Administrator (CKA)

Other

• Driving license
• Nonsmoker
• Getting along with others, capability to work in a multicultural, international company
• Strong self-motivation for learning of new technologies and solutions
• Very good communication skills proven during many on-site installations
• Willingness to travel much, ability to work well under pressure
• Polish (mother tongue), English (fluent), Russian (basic).
• Hobbies: road cycling & workouts
• Open source projects (https://github.com/jaroslawhartman)