Sai Fadaei

Doctoral Researcher

University of Surrey

• Lead developer and operator of LEOScope, a global testbed running measurement clients at Starlink-connected sites from Antarctica to northern Canada. LEOScope received the ACM SIGCOMM 2025 Best of CCR Award and has supported more than 16 research papers.
• First author, ACM SIGMETRICS 2026: a 1.5-year measurement study of the effects of severe and extreme geomagnetic storms on satellite-network performance across orbital regimes.
• Ran a year-long measurement campaign on Starlink connectivity in Antarctica, characterising inter-satellite-link paths, TCP congestion-control behaviour and seasonal effects on remote links.
• Extended Xeoverse, a digital twin for LEO, MEO and GEO satellite networks, adding in-space CDN architectures, inter-satellite-link mesh topologies, routing and queueing models, and TCP congestion control support.

Research Engineer

University of Surrey

• Shipped the core infrastructure for LEOScope, including node orchestration, experiment scheduling and data collection across geographically distributed sites.
• Developed two tools for the £3.4m EPSRC project Privacy-Enhancing Technologies for Life Transitions (AP4L): Risk Playground, an LLM-based gamified platform for exploring privacy risk; and Transition Guardian, an on-device span detector that identifies sensitive self-disclosure before data leaves the device.

Senior Software Engineer → Software Team Lead

Hezardastan Group — Karnameh

• Promoted within one year from Senior Software Engineer to Software Team Lead, leading a 21-person cross-functional team of front-end and back-end engineers and designers.
• Refactored a legacy codebase into an event-driven microservices architecture, reducing maintenance overhead and enabling faster feature delivery.
• Designed and launched a real-time matching system for car inspections that reduced operational costs by 40%.
• Planned delivery, reviewed technical designs and code, and mentored junior developers across the team.
• Introduced an automated lead-scoring and notification workflow that analysed user behaviour and prioritised leads for the sales team, reducing manual triage by around 50%.

Software Team Lead

Panco

• Built an event-driven socket layer for real-time voice rooms and used it to launch three multiplayer games; company revenue rose by around 25% following their launch.
• Clustered the data layer to improve throughput and load distribution while removing single points of failure.
• Designed a queue manager that prioritised live voice sessions and maintained service quality under high concurrent load.

Software Engineer (Blockchain)

Nobitex

• Implemented graph-based transaction validation for anti-money-laundering, with real-time checks up to six transaction hops and asynchronous monitoring beyond that depth to identify and blacklist suspicious accounts.
• Added queueing to the transaction-matching service so that user transactions were processed fairly under load.
• Implemented an ML-based face-recognition authentication system that reduced the associated customer-support workload by 80%.

Backend Engineer

Shaya Smart Solutions

• Built a low-latency trading core and transaction-matching engine for Agah Broker, targeting high-volume stock-market transactions as the first phase of the company's move to online trading.
• Created a pipeline to crawl and annotate Farsi multimedia content and documents for a graph-based search engine.

PhD in Computer Science

University of Surrey — supervisor Prof. Nishanth Sastry; co-supervisor Dr. Ehsan Toreini

• Research focus: LEO satellite networks, Internet measurement, CDN architectures, and network resilience.

MSc in Computer Systems Networking and Telecommunications

University of Isfahan — supervisor Dr. Neda Moghim

• Thesis: “Network Slicing Based Mobility Management in 5G Networks and Beyond: A QoS Improvement Approach.” Thesis GPA 3.5/4.0.
• Fully funded studentship after ranking in the top 1% of the nationwide MSc entrance exam.

BSc in Computer Engineering

Hamedan University of Technology — supervisor Prof. Hassan Bashiri

• Thesis 1: “Blockchain in Cloud Computing: Security Challenges.”
• Thesis 2: “An OpenCV face-parts recognition module for access-control experiments.”
• GPA 3.5/4.0. Fully funded studentship after ranking in the top 1% of the nationwide BSc entrance exam.