You will get professional system architecture diagrams in Visio, Draw.io or Lucidchart
Project details
A diagram that confuses your engineering team is worse than no diagram at all. CTOs and Tech Leads don't need pretty pictures — they need precise, unambiguous architecture diagrams their team can implement, present to stakeholders, and build infrastructure from.
That's exactly what I deliver.
I'm San — a senior techno-functional architect with 20+ years designing system, network, DFD, UFD, ERD, and process flow diagrams for enterprise and SaaS products across FinTech, Banking, Healthcare, ERP, and Shipping. I work across Visio, Draw.io, and Lucidchart — whichever your team already uses.
What sets my diagrams apart: I don't just draw boxes and arrows. I understand the underlying architecture, data flows, and system dependencies — which means every diagram is technically accurate, stakeholder-ready, and developer-actionable from day one.
Expert-Vetted on Upwork. 100% Job Success Rate. Your diagrams will be clean, precise, and ready to use — delivered fast.
That's exactly what I deliver.
I'm San — a senior techno-functional architect with 20+ years designing system, network, DFD, UFD, ERD, and process flow diagrams for enterprise and SaaS products across FinTech, Banking, Healthcare, ERP, and Shipping. I work across Visio, Draw.io, and Lucidchart — whichever your team already uses.
What sets my diagrams apart: I don't just draw boxes and arrows. I understand the underlying architecture, data flows, and system dependencies — which means every diagram is technically accurate, stakeholder-ready, and developer-actionable from day one.
Expert-Vetted on Upwork. 100% Job Success Rate. Your diagrams will be clean, precise, and ready to use — delivered fast.
Main Type
Mobile Apps, Web Apps, Website, OtherFile Format
Figma, PDF, InVision, JPG, PNG, SVG, OtherWhat's included
| Service Tiers |
Starter
$12
|
Standard
$20
|
Advanced
$40
|
|---|---|---|---|
| Delivery Time | 1 day | 1 day | 1 day |
Number of Revisions | 1 | 1 | 1 |
Number of Pages | 1 | 1 | 1 |
Source Files | |||
Commercial Use | |||
Responsive Design | |||
Interactive Mockup |
Optional add-ons
You can add these on the next page.
Additional Revision
+$3
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RA
Rami A.
Oct 13, 2024
30 minute consultation
Really helped me. Great person
AG
Aaryan G.
Aug 6, 2024
Subject Matter Expert in PowerBuilder
RW
Ryan W.
Jul 8, 2024
Technical Writer for Architecture Document Enhancement
TB
Thomas B.
Jul 2, 2024
Powerbuilder Consultant for Modernization Team, Visual Expert a Plus
GG
Go G.
Jul 1, 2024
Research
EXCELLENT TRAVAILLEUR, JE RECOMMANDE POUR TOUT VOS BESOIN BESOIN DE CHEFFERIE DE PROJET INFORMATIQUE TANT AU NIVEAU FONCTIONNELLE QUE TECHNIQUE.
About Santonu
Fractional CTO, Enterprise PM| GenAI Workflow & LLM Integration Leader
100%
Job Success
Konnagar, India - 6:27 am local time
I operate as a Fractional CTO, Enterprise Product Owner, and AI-enabled delivery leader. My background includes 6 years embedded on-site in the USA partnering directly with tier-1 financial institutions, CEOs, and engineering VPs to ship highly compliant, scalable applications. I've led real GenAI feature builds for clients—taking LLM-powered capabilities from concept to production, not just advising on strategy.
My Upwork metrics demonstrate an essential asset:
5,800+ hours logged, with an exceptionally high average retention rate per client. I don't cycle through transactional tickets; I embed deeply into your organization to protect your technical roadmap and manage engineering floor velocity.
What you get from day one:
- Spec-Driven Execution: I use ChatGPT and Claude daily to translate complex, ambiguous product goals into developer-ready, markdown PRDs, architecture diagrams, and ironclad user stories—faster and with fewer revision cycles than manual spec-writing.
- GenAI Workflow Engineering: I've shipped LLM-orchestrated features using LangChain, LlamaIndex, and AutoGen, and I guide distributed dev teams in adopting this tooling to reduce rework and accelerate velocity. I use GitHub Copilot and Cursor directly to review and pressure-test dev output, so I validate delivery quality, not just manage it from a distance—I'm deepening this expertise continuously through structured GenAI/agentic AI training.
- Core Tech Stack & Legacy Modernization: I bridge the gap between heavy legacy systems and future-state, cloud-native microservices (.NET Core, Angular). I am a certified PowerBuilder Expert, specializing in migrating enterprise monoliths, DataWindows, and legacy databases safely to the cloud with zero operational downtime.
- Risk & Regulatory Governance: Backed by an M.Sc in IT, PMP, and SAFe certifications, I ensure your products meet strict security, compliance, and enterprise data-integrity standards.
Core Competencies:
Enterprise Cloud Architecture | Fractional CTO Leadership | Legacy to Cloud Migration (.NET Core, PowerBuilder) | GenAI Workflow Integration (LangChain, LlamaIndex, AutoGen) | AI-Assisted Delivery (ChatGPT, Claude, GitHub Copilot, Cursor) | Distributed Agile Operations (SAFe, Scrum) | High-Stake Stakeholder Alignment
Certifications:
PMP® | SAFe® POPM | CSPO | CSM | Sybase Certified PowerBuilder | Azure AI Certified (AI-900, DP-900)
Education: Master of Science in Information Technology (M.Sc IT)
Availability: Scalable advisory hours aligned across EST, PST, and EU time zones.
I partner best with founders, engineering directors, and investors who want a strategic thinking partner to de-risk their engineering execution — including the GenAI initiatives now central to product roadmaps. Let's connect.
Steps for completing your project
After purchasing the project, send requirements so Santonu can start the project.
Delivery time starts when Santonu receives requirements from you.
Santonu works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Gathering
Collect and review all necessary details and materials from you, including specific diagram types (UML, DFD, etc.) and any additional preferences to ensure clarity on the project scope.
Draft Creation
Develop an initial version of the requested diagram based on gathered requirements. This includes creating drafts of diagrams like user flows, sequence diagrams, or architecture layouts.