Relocation Ready (KSA / UAE / EU)
Welcome to my engineering portfolio

Polyglot Systems Engineer
& Cloud-Native Architect

Over 7 years of experience engineering low-latency systems, secure decentralized structures, and high-availability cloud backends. A specialist in Modern C++, Python, Web3/Cardano Node operations, and integrating Agentic AI workflows to accelerate production lifecycles.

Hire Ehtisham View Code & Projects Cardano Ticker: LEGA
Primary Toolset:
C++20 Python Rust Web3/Cardano Docker / K8s Agentic AI
sabir@ehtishamsabir.com:~

$ cat profile_meta.json

{
  "name": "Ehtisham Sabir",
  "role": "Senior Systems & Web3 Specialist",
  "experience": "7+ Years",
  "completed_projects": "110+ on Upwork",
  "status": "Active (Relocation Ready)",
  "core": ["C++", "Python", "Rust", "SPO", "AI"],
  "location": ["KSA", "UAE", "EU", "Global Remote"]
}

$ python3 -m agentic_workflow

>>> Optimization complete. Boilerplate reduced by 60%. Uptime = 99.99%.

Core Expertise

Technical Capabilities Matrix

Highly adaptive engineering stack optimized for speed, reliability, scalability, and modern automation pipelines.

Low-Latency & Systems C++

Proficient in building real-time socket price feeds, low-latency device drivers, multi-threading architectures, IPC (shared memory, sockets), STL/Boost, and multi-agent coordination models under execution limits.

C++20IPCBoostWiresharkSocket Programming

Cloud-Native Python Backend

Specialist in high-throughput backend APIs using FastAPI, Django, and Flask. Heavy reliance on relational modelling (PostgreSQL/MySQL), efficient cache layering (Redis), and event-driven architectures.

FastAPIDjangoPostgreSQLRedisREST/GraphQL

Web3 & Cardano Node Operations

Over 5 years of Stake Pool Operation (SPO) running the live pool LEGA. Extensive knowledge of distributed consensus, cryptographic signing, Cosmos explorations, BSC/Ethereum Solidity smart contract audits.

Cardano SPOSolidityCosmos LedgerMultisigCryptographical sign

Cybersecurity & Yara Malware Scans

Designed lightweight, multi-threaded C++ scan daemons leveraging Yara-C/Yara-DLL filters for real-time malicious payload identification. Automated OWASP scanning and penetration testing leveraging Blackkite rulesets.

Yara-COWASP Top 10BlackkiteThreat MitigationDevSecOps

Agentic AI Integration

Pioneering implementation of AI agents (OpenAI API, Claude, custom LangChain nodes) inside enterprise CI/CD processes. Drastically reduced boilerplate code by 60% and optimized unit-test automation loops.

LLM APIsLangChainCursor Custom ScriptsVectorDBAutotesting

DevOps & Cloud Orchestration

Experienced orchestrating secure containerized deployments on AWS (ECS, EC2, Lambda, RDS) and Azure. Expert builder of zero-downtime CI/CD workflows using GitHub Actions and Jenkins.

AWS/AzureDockerKubernetesGitHub ActionsCI/CD
Cardano Infrastructure

Stake Pool operation Ticker: LEGA

Since 2021, I have engineered and maintained the high-availability cryptographic ledger node cluster for the **LEGA** Cardano Stake Pool.

Originally deployed on a high-overhead footprint of 17 legacy server nodes, I successfully architected and migrated the infrastructure into a highly optimized, load-balanced 4-node Ubuntu cluster (including 2 relays).

✔ 70% Savings in monthly infrastructure & hosting budgets.
✔ 99.99% Block Uptime achieved over years of active epoch transitions.
✔ Zero-Downtime Hot Upgrades conducted for hard-fork events.
Delegate / Support Ticker LEGA
LEGA SPO

Cardano Live Node Cluster

Active Stake Secured 4,000,000+ ADA
Service Node Footprint 4 Active Nodes
Node Operating System Ubuntu Server 22.04 LTS
Production Reliability 99.99%
Node Network Status [ONLINE]
BP Node
↔
Relay 1
↔
Relay 2
↔
Monitor Node
Interactive Portfolio

Selected Production Codebases

Filtering tools highlighting advanced C++ performance, core Python applications, and decentralized solutions.

<C++ / Embedded>
Systems & Robotics

UESTC Swarm Drone Coordinator

Developed coordination engines and swarm intelligence mathematical models in C++ to simulate real-time route pathfinding for 50+ autonomous drones within highly constraint embedded networks.

C++Multi-threadingIPC SocketsUML Modeling
<C++ / HFT>
Fintech / Low Latency

MT5 Algorithmic Price-Feed Handler

Engineered low-latency high-frequency algorithmic trading (HFT) modules integrating socket-based IPC with MetaTrader 5 (MT5). Utilized Wireshark and tshark network capture scripts to eliminate delays across servers.

C++tsharkPepperstone / MT5Low-Latency
<C++ / Security>
Cybersecurity

Yara-C Multi-Threaded Malware Scan Daemon

Developed lightweight, persistent C++ system scan daemons utilizing Yara-C filters for real-time malicious application identification, cutting scan latency overhead across enterprise clusters by 25%.

C++Yara-CMulti-threadingDevSecOps
<Web3 / Clickhouse>
Blockchain Backend

Cosmos Custom Explorer & Multi-Sig

Architected custom decentralized blockchain explorations for Bitcoin and alternative ledgers. Deployed high-speed block hashing indexing to a highly optimized Clickhouse database on AWS EC2.

Cosmos SDKPolkadot toolsClickhouseAWS EC2
<Web3 / DevOps>
DevOps & Staking

Cardano 4-Node High-Availability Cluster

Migrated Cardano block-producing nodes from a high-overhead 17-server footprint to a load-balanced 4-node cluster (with 2 relays). Secured 99.99% uptime and achieved a monthly cost reduction of 70%.

Cardano SPOUbuntu NodeZero-DowntimeAzure / AWS
<Python / LLM>
AI Automation

Agentic AI Automated Scraper & Unit Test Loops

Developed autonomous multi-agent pipelines leveraging the OpenAI / ChatGPT API to crawl complex enterprise systems, run automatic code cleanups, and write test suites, reducing manual engineering cycles by 60%.

PythonOpenAI APIFastAPIAsyncio
Work Experience

Professional Journey

7+ years dedicated to low-level optimization, distributed cloud architecture, and cybersecurity engineering.

Oct 2018 - Present
Upwork (Global)

Senior Software Developer & Systems Architect

Executive Freelance (Top Rated - 110+ high-profile projects delivered):

  • Spearheaded custom Agentic AI workflows to auto-generate unit tests, streamline code refactoring, and reduce boilerplate development by 60%.
  • Engineered low-latency C++ price-feed socket handlers and real-time mining aggregators running under strict limits.
  • Developed customized driver modifications for specialized competitive gaming peripherals, optimizing input latency by 15ms.
Jan 2021 - Apr 2026
Lega Systems (USA - Remote)

Systems & Cybersecurity Engineer

Decentralized Systems Security & High-Availability Operations:

  • Managed and migrated the Cardano node cluster network from 17 servers to 4 highly-available nodes (including 2 relays), lowering monthly operating costs by 70% with 99.99% epoch uptime.
  • Developed and integrated a multi-threaded C++ scan daemons leveraging Yara-C patterns for real-time threat detection.
  • Established automated OWASP API vulnerability scanning using Blackkite scripts, neutralizing over 500+ infrastructure risks.
Apr 2025 - Jun 2025
Qdata (UAE - Remote/Hybrid)

Algorithmic Software Specialist

Low-latency High-Frequency Trading & IPC Systems:

  • Programmed C++ autotrading modules integrated with Pepperstone and MetaTrader 5 (MT5).
  • Created socket-based Inter-Process Communication (IPC) risk management bots for quick execution.
  • Conducted network packet capture analysis using tshark and Wireshark on Linux to solve millisecond transport delays.
2023 - 2024
UESTC (China - Onsite)

Research Assistant (Autonomous Coordination)

Swarm Drone coordination simulations & Embedded Peripheral Logic:

  • Coded mathematical swarm models and pathfinding coordinators in multi-threaded C++ to simulate 50+ drone flight formations.
  • Programmed C++ serial hardware communication layers to interface with printer/scanner micro-peripherals in industrial settings.
Relocation Ready

Why Recruiters Hire Ehtisham Sabir

A breakdown of qualifications, communication, and immigration readiness for international hiring managers.

🌍 Relocation Logistics

Available Immediately: Relocation ready for Saudi Arabia (SAMIs/NEOM hubs), United Arab Emirates (Dubai/Abu Dhabi), and Europe (Amsterdam/Berlin/London hubs). Fully equipped to handle visa processing immediately.

💬 Professional Communication

IELTS Certified: Full professional English fluency with years of remote coordination experience with US, UAE, and Chinese engineering leads.

🎓 Educational Foundations

BS in Computer Science: Graduated with honors from COMSATS University Islamabad. Ranked 2nd Position in the prestigious Airtech National Programming Competition.

📈 Unmatched Delivery Track

110+ Production Deployments: Maintains a 100% Client Satisfaction track on Upwork as a Top Rated systems engineer with extensive public feedback.

Get In Touch

Let's Build Something High-Performance

Interested in recruiting Ehtisham? Submit the form below for immediate technical interviews and scheduling.

Contact Information

Feel free to reach out directly through email, phone, or any major professional portal.

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Direct Phone & WhatsApp +92 307 5809099
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Immigration Status Relocation Ready - Global Passport