Sahan Vishwa Perera

Software Engineer | TypeScript · WebMCP · IoT | IT Undergraduate, University of Moratuwa

+94 75 615 6860 ● svishwa0800@gmail.com ● Werellagama, Sri Lanka ● linkedin.com/in/svishwa0800 ● github.com/Svishwa2004

Software-engineering undergraduate at the University of Moratuwa (B.Sc. Hons IT & Management, 2025–2029) building privacy-preserving WebMCP agent tooling (TypeScript/Vite/Node.js) and production IoT firmware (C++/ESP32). Shipped Airlock — in-browser spreadsheet analysis an AI agent queries without receiving the file (live demo) — and WebMCP-Gauge — lint + run harness (4,500 trials) measuring whether agents call exposed tools. Also sole engineer of an automated optical pH sensor (12-state FSM, custom PCB, WebSocket dashboard). Seeking a software-engineering internship.

B.Sc. (Hons) in Information Technology & Management

University of Moratuwa, Moratuwa

Expected Completion: 2029

2025 – Present

G.C.E. Advanced Level

St. Anthony's College, Kandy

ICT: A Accounting: A Economics: B

2023

G.C.E. Ordinary Level

St. Anthony's College, Kandy

IT: A English: A Religion: A + 6 more subjects

2020

Maintained desktop hardware, OS imaging, and software for a government IT environment — installs, troubleshooting, and backups across multiple departments
Streamlined Excel/Word data-entry and document workflows, improving record accuracy and retrieval; diagnosed connectivity and config issues to cut downtime

Programming Languages

C C++ Java JavaScript TypeScript Node.js SQL HTML5 CSS3

Embedded Systems & IoT

ESP32 Microcontroller Programming Firmware Development Finite State Machine (FSM) PWM Control WebSocket LittleFS PCB Design (EasyEDA) PlatformIO

Web & AI-Agent Tooling

WebMCP Tools Vite PapaParse REST APIs Chrome CDP LLM Judge Evals GitHub Actions CLI Development

IT Support & Systems

Hardware Troubleshooting OS Configuration Network Connectivity Data Backup & Recovery

Developer Tools

Git GitHub VS Code Version Control Microsoft Office Suite

Soft Skills

Analytical Problem Solving Technical Communication Self-directed Learning

National Certificate — ICT Technician (NVQ Level 4)

College of Technology, Kandy

2022

Built for the Devpost WebMCP Hackathon challenge — a privacy-preserving data workbench where CSV parsing and all aggregations run entirely in the browser tab — an AI agent queries 7 WebMCP tools (describe_dataset, sum_by_category, filter_rows, monthly_trend, find_anomalies, top_expenses, clear_highlights) and receives only aggregates while the network stays silent
Designed a default-on privacy gate (file name + row details withheld, matches highlighted on the human's screen) with unit tests per tool; documented 5 empirically verified WebMCP API behaviors against Chrome 151

Shipped lint (static manifest rules) + run (S sessions × R repeats, Wilson intervals, JSONL resume, honest Shields badges) CLI plus a Marketplace GitHub Action with split exit codes separating "could not measure" from genuine regressions
Published 16 runs / 4,500 trials: clean manifest 99.3% vs deliberately degraded twin 83.1% (sum_by_category 60.0%, top_expenses 26.7%), proving the metric discriminates real description defects

Sole engineer of a production-grade automated IoT colorimetric pH sensor — embedded C++ firmware, custom PCB, 3D-printed optics enclosure, 3-pump fluidics, and real-time web dashboard from concept to completion
Architected a 12-state non-blocking FSM (fill → dose → mix → Dynamic Blanking → measure → vacuum drain) with dual-wavelength optics, TCS34725 HSV colorimetry, and NVS calibration for reliable hands-free operation

Sahan Vishwa Perera

Professional Summary

Education

Work Experience

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