Hewlett Packard Enterprise

Supporting AI infrastructure pre-sales and business development across Central Europe for HPE Private Cloud AI (PCAI), an enterprise-ready AI platform co-developed with NVIDIA. I help customers define AI strategies, implement MLOps workflows, and scale model deployment on optimized hybrid architectures.

Key Contributions & Achievements:
→ Driving Pre-Sales Across Central Europe
Worked with business and technical stakeholders to address AI adoption challenges, demonstrate value, and support strategic deals.

→ Shaping AI Business Development
Helped define PCAI business strategy with partners and local teams, aligning with market needs and identifying new opportunities.

→ Strengthening Partnerships with NVIDIA and the AI Ecosystem
Led regional co-selling, customer engagements, and sales enablement with NVIDIA and channel partners.

→ Bridging the Gap Between AI Strategy and Execution
Guided organizations in creating AI roadmaps, enabling scalable infrastructure for model deployment and MLOps.

→ Educating and Enabling Teams
Delivered AI enablement sessions to internal sales and partner teams to strengthen regional go-to-market capabilities.

Solution Architect - HPE Private Cloud AI

Supported the go-to-market of HPE Ezmeral in Central Europe as a pre-sales engineer. Acted as a technical advisor to sales teams, partners, and customers, helping to demonstrate the platform’s value in modern data and AI environments. Contributed to field enablement, opportunity qualification, and feedback into product strategy.

Key Contributions & Achievements:
→ Sales Support & Technical Enablement
Worked with country architects and partners to explain Ezmeral’s capabilities, answer technical questions, and help close complex opportunities.

→ Hands-On Expertise in Data & AI
Developed practical knowledge in machine learning, data engineering, and Kubernetes to advise clients and support solution design.

→ Strategic Sales Collaboration
Aligned with account and sales teams to refine positioning, leverage competitive insights, and shape customer proposals.

→ Product & Market Feedback Loop
Collaborated with the product team to relay customer needs and influence the platform roadmap.

→ Regional Process Development
Helped define tools and best practices to support consistent pre-sales execution across the region.

Solution Architect - HPE Ezmeral - Data & AI SW Platform

Managed the design and delivery of large-scale infrastructure outsourcing and transformation projects for IBM’s major French clients. Led cross-functional solution teams, developed client proposals, and drove strategic account engagements with a focus on service innovation and profitability.

Key Contributions & Achievements:
→ Enterprise Solution Design
Led architecture for complex infrastructure services, including managed services and project-based IT transformations.

→ Client & Deal Ownership
Engaged directly with customers and senior stakeholders to understand business needs, tailor proposals, and support deal closure.

→ Service Definition & Contracting
Defined solution scopes, wrote statements of work, and managed customer expectations throughout project lifecycles.

→ Technology Enablement
Worked on deals involving hybrid cloud, big data, analytics, and emerging technologies like blockchain.

→ Innovation & IP Contribution
Submitted multiple patent ideas and contributed to IBM internal innovation initiatives.

→ High-Impact Engagements
Delivered over 50 major IT infrastructure deals across sectors, ensuring alignment with client business goals while driving margin for IBM.

Technical Solution Manager | Lead Solution Architect

Led the design and delivery of infrastructure solutions across Nordic and French accounts as a pre-sales architect. Translated complex technical needs into viable solutions using platforms like SAP, VMware, Unix, MS SQL, and Oracle. Acted as a trusted advisor to clients and led multi-disciplinary teams to deliver high-value proposals and implementations.

Key Contributions & Achievements:
→ End-to-End Solution Design
Architected technical solutions aligned with business goals, incorporating hybrid technologies to meet scalability, performance, and cost targets.

→ Client Engagement & Deal Support
Partnered with clients throughout the sales lifecycle, from discovery to proposal, to shape solutions and secure over €10M in business.

→ Leadership of Cross-Functional Teams
Managed internal and external expert teams, ensuring solution alignment, delivery feasibility, and clear documentation.

→ Profit-Driven Execution
Balanced client value with IBM’s profitability targets to craft win-win engagements that met margin expectations.

→ Complex Project Closure
Led the successful signing and planning of 100+ major IT service contracts, helping solidify IBM’s footprint in the region.

Infrastructure Services Solution Manager | Solution Architect

Alongside my main technical role, I served as an internal instructor within IBM, delivering structured training programs focused on AIX and Power Systems technologies. I enabled the growth of technical talent across IBM by teaching structured courses, mentoring certification candidates, and sharing advanced knowledge.

Key Contributions & Achievements:
→ Instructor for Core & Advanced AIX Courses
Delivered instructor-led courses across a broad technical spectrum including AIX basics, virtualization, advanced administration, PowerHA, and performance tuning.

→ Certification Mentorship
Guided colleagues through preparation for IBM Power Systems certifications, offering one-on-one coaching and structured learning paths.

→ Content Development & Customization
Adapted existing training materials to fit internal needs and real-world use cases, making complex topics accessible to all experience levels.

→ Cross-Team Enablement
Built strong relationships across departments by sharing expertise and creating a culture of continuous learning.

→ Recognition as a Trusted Knowledge Leader
Became a go-to expert for Power Systems training within the Brno office, reinforcing IBM’s internal capability development initiatives.

IBM internal Teacher

Directed large-scale technical infrastructure upgrades for French clients, managing project delivery across SAP, Oracle, Power Systems, and AIX migrations. Coordinated local and remote teams while maintaining operational continuity and ensuring alignment with customer expectations.

Key Contributions & Achievements:
→ Modernization & Migration Leadership
Oversaw Oracle and SAP upgrades, AIX migrations, and operational transitions from Solaris; improving reliability and performance.

→ Technical Oversight of Power Systems
Managed PowerHA clusters and Ethernet infrastructure, ensuring system uptime and optimized resource usage.

→ Crisis Management & Incident Response
Led a high-impact LDAP system recovery project with daily C-level reporting, restoring critical services under pressure.

→ Hands-On Infrastructure Buildouts
Designed and implemented server systems, ensuring optimal connectivity, redundancy, and scalability.

→ Collaborative Delivery Execution
Worked closely with diverse teams to coordinate technical delivery across multiple accounts and domains.

Technical Project Leader | UNIX Subject Matter Expert

In parallel with my role as Technical Project Lead, I assumed responsibility for coordinating the AIX release process for multiple French enterprise clients. Ensured smooth, compliant, and timely execution of software releases across a complex technical landscape.

Key Contributions & Achievements:
→ Release Calendar Ownership
Planned and managed the annual release schedule for AIX environments, aligning with client business needs and system maintenance windows.

→ End-to-End Release Coordination
Led release execution from pre-approval through verification and go-live, ensuring technical completeness and quality assurance at every stage.

→ Stakeholder Communication & Alignment
Acted as the bridge between delivery teams and clients, facilitating coordination and issue resolution throughout the release lifecycle.

→ Quality & Documentation Oversight
Maintained comprehensive documentation, testing evidence, and audit trails to support operational compliance and process improvement.

→ Dual-Role Management
Successfully balanced responsibilities across both technical delivery and process governance roles, showcasing versatility and reliability.

Release Process Coordinator

Atos

Acted as the lead Unix expert for a major client operations transition from IBM to Atos. Designed infrastructure, led technical migrations, and coordinated system standardization across Linux and AIX environments.

Key Contributions & Achievements:
→ Infrastructure Design & Delivery
Architected client-specific Unix environments, ensuring alignment with performance and security standards.

→ System Migration Execution
Led Linux-to-server transitions and AIX server deployments to meet business and technical transformation goals.

→ Automation & Scripting
Developed tools and scripts to streamline administrative tasks and increase operational efficiency.

→ Security & Compliance Hardening
Applied updates and configuration changes to align with internal and client-specific security requirements.

→ Stakeholder Communication
Provided regular progress updates to both client and internal stakeholders, ensuring visibility and trust throughout the engagement.

Subject Matter Expert

Progressed from Unix Administrator to Account Technical Leader, overseeing critical IT operations for major French accounts. Managed system performance, led knowledge transfers between international teams, and ensured reliable service delivery in complex environments.

Key Contributions & Achievements:
→ Operational Oversight of Unix Systems
Monitored, maintained, and optimized AIX and Unix environments to ensure stability and uptime for critical client systems.

→ Leadership in Knowledge Transfer
Led transitions of Unix operations from IBM France to IBM Poland, and later from Poland to IBM India, ensuring seamless continuity and capability retention.

→ Incident Management & Support
Handled high-severity technical incidents, often during off-hours, resolving issues under pressure with minimal disruption.

→ Client Relationship Support
Acted as a technical point of contact for key clients, aligning operations with business needs and building long-term trust.

→ Career Progression through Delivery Excellence
Promoted from admin role into leadership due to consistent delivery, problem-solving skills, and team collaboration.

Account Technical Leader

Started as a system operator and quickly progressed into a leadership role, overseeing a team responsible for daily monitoring and support of IT systems. Played a key role in transitioning operations to a new IBM delivery center in Poland and leading the new team to success.

Key Contributions & Achievements:
→ Operational Excellence
Monitored batch jobs, reports, and system health checks to ensure daily tasks ran smoothly with minimal failures.

→ Team Leadership & Coordination
Led a team of 16 operators, overseeing shift planning, quality control, and internal communication.

→ Transition Project Execution
Managed the operational transition from the Czech Republic to IBM Poland, relocating for three months to train the new team and ensure operational readiness.

→ Mentorship & Skills Development
Supported the growth of junior team members, helping them ramp up quickly and contribute effectively to the new delivery center.

→ Foundation of a Technical Career
Laid the groundwork for a successful career in enterprise IT through dedication, adaptability, and continuous learning.

Computer Operator | Team Leader

Hi! I'm Vincent, fifteen years ago, I moved to Brno (Czechia) for ‘just a year.’ Now I spend my days at HPE trying to turn AI buzzwords into business value without putting anyone to sleep.
At home, I’m usually explaining to my kids that AI won’t steal their toys. At work, I help companies build Private Cloud AI solutions they can actually trust.
Over the past 15 years, I’ve helped large companies to improve their business efficiency through successful digital transformation. 
Today, I lead technical strategy and solution architecture for key enterprise accounts. In addition to designing AI and data-driven solutions, I actively contribute to business development, opportunity qualification, and go-to-market planning. I work closely with sales teams, partners, and customers to shape solutions that address real business needs and position them for long-term success.

Multi-year experience focusing on the following areas:
- Solution Architecture, 
- Customer/Account Management, 
- Program/Project Management, 
- Service Delivery & Incident Management, 
- Leadership, 
- Global Deal Execution with Multi-Cultural Teams, 
- Organizational Change Management 
- Maintenance of business continuity, 

Technology Exposure:
- AI/ML: MLOps (MLflow, Kubeflow, Ray), LLMs, Databricks (Certified ML Engineer) and deployment on-premises and hybrid infrastructures;
- Data Engineering: SQL, Spark, Airflow, Hadoop, MapR/HPE Ezmeral Data Fabric Software, AWS (Redshift, S3, EMR);
- Cloud Native: Kubernetes (CKAD), ArgoCD, Git, Docker; 
- Cloud: IBM, Amazon Web Services & Microsoft Azure (Microsoft Certified);
- Physical Server & Storage Configuration (x86, p-Series, Mainframe, etc.) and HPE (Compute, Storage, Hyperconverged)

If you're looking for a professional to lead your next data-driven project, explore innovative AI/ML solutions, or drive your organization's digital transformation, feel free to connect with me. I look forward to collaborating on exciting ventures that push the boundaries of technology and business.


[Keywords: Data & AI, Solution Architect, Digital Transformation, Account Management, Program/Project Management, Leadership, Global Deal Execution, Cloud Native, AI/ML, AWS, Azure, Kubernetes, Data Engineering]

Vincent Charbonnier

University of Colorado Boulder

Associate Professor

University of Maryland

Assistant Research Scientist

Research Associate

Massachusetts Institute of Technology

PhD Candidate

Tom Yeh

llm.c by hand ✍️ C meets Transformer

This combination is perhaps as low as we can get to explain how the Transformer works.

Special thanks to @Andrej Karpathy 

--

Part 1: gpt2_forward

Karpathy's llm.c implements the transformer forward step as the following sequence.

(skip)layernorm_forward
1. matmul_forward
2. attention_forward
3. matmul_forward
(skip) residual_forward
(skip) layernorm_forward
4. matmul_forward
5. gelu_forward
6. matmul_forward
(skip)residual_forward

--

Part 2: matmul_forward

B: Batches (of Tokens)
T: Tokens
C: Input Channels
OC: Output Channels

--

C programming and matrix multiplication are two of the most important topics. But it is often difficult to get people excited by these topics. 

I hope this exercise can help people see further into the LLM black box, and appreciate C programming and matrix multiplication by hand. 😀 

---
100% original, made by hand ✍️
Join 45K+ readers of my newsletter: https://byhand.ai

I’ve implemented SVMs three times in my life — first in MATLAB as a grad student, again in C++ during my postdoc, and finally by hand ✍️ as a professor who needed to truly understand it well enough to teach it. If you’re curious, here’s my full 19-step walkthrough: https://byhand.ai/svm
----
100% original, made by hand ✍️
Join 52K+ readers of my newsletter: https://byhand.ai

LoRA by Hand ✍️ ~ How does LoRA make fine-turning efficient (fewer parameters)?

I drew this animation to show you.

Pay attention to the number of red cells.

On the left, regular fine-tune would involve 10x10=100 trainable parameters to update the original weight matrix..

On the right, LoRA reduces to two smaller (low-rank) matrices, A and B, each has only 20 trainable parameters, together 40 trainable parameters, a 60% reduction.

When weight matrices are larger in real-world application, this reduction is even more significant

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Tom Yeh

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Performance Score.css-goub6s{font-size:var(--chakra-fontSizes-md);font-weight:500;color:var(--chakra-colors-gray-600);display:block;margin-top:var(--chakra-space-1);}Tom Yeh's LinkedIn Performance

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