John Melek
Mentor
(272 reviews)
US$40.00
For every 15 mins
440
Sessions/Jobs
ABOUT ME
Software Developer | Trader | Entrepreneur
Software Developer | Trader | Entrepreneur
I am a Lead AI Engineer and AI Architect with 17+ years of experience building scalable, high-performance AI platforms in both enterprise and startup environments. I have designed and delivered end-to-end GenAI infrastructure, including cloud-native model serving, distributed compute, and API platforms. My hands-on expertise spans Python, Kubernetes, Docker, Azure, GPU workloads, and large-scale backend systems. I have led cross-functional teams from 0 → 1, optimizing system performance, throughput, and reliability. I am eager to bring this experience to architect and scale your LLM infrastructure with real-world impact.
Berlin (+01:00)
Joined March 2019
EXPERTISE
11 years experience | 15 endorsements
10 years experience | 23 endorsements
11 years experience | 20 endorsements
3 years experience | 19 endorsements
1 year experience | 3 endorsements
11 years experience | 12 endorsements
3 years experience
REVIEWS FROM CLIENTS
(272 reviews)
Alex LeBlanc
November 2022
Thank you for the clear explanation.
Alex LeBlanc
October 2022
Excellent, solved my problem quickly. Thank you.
Robert Nawrot
October 2022
Very patient and knowledgeable. Will work with you to find a solution!
Nick Karaev
October 2022
Best tutor in C language! Not only helped to discover bugs, but also helped me to understand the reason why they happened!
Alessio Grancini
October 2022
Great tutor
Alessio Grancini
October 2022
A lot of patience, very helpful to progress my learning journey
Edward Wu
October 2022
Very professional and friendly guy. He explains everything very clearly and while helping me solving the code, he always explains the theory and the process behind it to let me understand and improve aswell. Definitely recommended!
Charlene Calderon
October 2022
AMAZING TUTOR !! walks you through everything and stops when you are not understanding the material. I will definitely be booking more tutoring sessions with John.
Zach Miller
September 2022
Great help!
Sean McClary
September 2022
John was definitely SUPER helpful! Helps you along the process! Thanks John would suggest to anybody!
EMPLOYMENTS
Lead AI Engineer | AI Architect
Hitachi Rail GTS Deutschland Gmbh
2021-11-01-Present
- Led a cross-functional team of developers, data scientists, UI/UX designers, QA engineers, and DevOps specialists delivering GenA...
- Led a cross-functional team of developers, data scientists, UI/UX designers, QA engineers, and DevOps specialists delivering GenAI productivity and automation platform for Bid Management and Engineering processes across the organization.
- Developed training programs and workshops to upskill the team and accelerate adoption.
- Served as AI architect for the cross-functional GenAI platform, defining its structure, components, and guiding development practices.
- Contributed to the organization-wide architectural blueprint for GenAI applications.
- Served as Scrum Master, facilitating agile ceremonies, sprint planning, and team coordination.
- Designed and implemented an M365 Copilot alternative with a strong focus on data privacy.
- Revitalized delayed ML projects, redefining the roadmaps, establishing datasets and benchmarks, and implementing experiment tracking leading to successful deliveries.
- Delivered technical presentations to the Global AI Community on emerging GenAI models, techniques and frameworks.
- Evangelized enterprise adoption of GenAI tools.
- Consulted on the technical feasibility of various GenAI initiatives and projects.
- Participated as mentor in the 4th round of GTS Career Anchor mentoring program.
- Business impact: Enabled ~6% projected productivity gains globally and generated significant savings on local AI initiatives.
- Tools: Microsoft Azure, Microsoft Copilot, Kubernetes, Haystack, React, Flask, PostgreSQL, and Langfuse.
Python
LLM
RAG
View more
Python
LLM
RAG
Agentic frameworks
View more