Hesam Sarkhosh

Experience

1. Software Engineer (Co-op) · ether.fi

   Sep 2025 – Apr 2026

   George Town, Cayman Islands / Toronto, ON

   A non-custodial DeFi neobank, liquid-restaking protocol, and crypto-backed card platform.

   • Shipped end-to-end features in the web app, from API to UI: the main Assets page, marketing campaign flows, and admin-portal features.
   • Built and maintained the administration console, support tooling, and the fraud surveillance dashboard; part of the team that launched the MEXC co-branded card.
   • Led the 0-to-1 integration of the Sardine behavioral-risk platform and built velocity rules, graph-based account clustering, and pattern matching that cut a cashback-farming attack from ~$50K/day to under $1K/day.
   • Prototyped LLM-driven anomaly detection over transaction sequences.

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2. Full-Stack Software Engineer · Communere Ltd. (engaged with Agxio Ltd.)

   Oct 2021 – Dec 2024

   Guildford, UK (Remote)

   • Technical architect and lead developer for 3+ years, leading a team of 4 engineers; owned front-end architecture and dashboards across the product suite plus the backend services beneath them.
   • Designed a standalone Next.js microservice that renders PDF reports from headless-CMS content with Puppeteer, automating report generation for the Galen microbiome platform.
   • Delivered React/TypeScript front-ends and Node.js/GraphQL APIs for an IoT sensor-streaming SaaS, an ML dermatology tool, a LLaMA-based knowledge-base chatbot, and a GPT-powered text-to-SQL interface.
   • Built a foundational microservice platform with global authentication on Go, PostgreSQL, Apache APISIX, and RabbitMQ.

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3. Full-Stack Software Engineer · Octal Software and Trade Inc.

   Oct 2020 – Oct 2021

   Istanbul, Turkey / Tehran, Iran

   Core systems for octalbit.com, a Binance-style cryptocurrency exchange for the Turkish market.

   • Implemented the spot-trading page in React/TypeScript: live order books, trade history, and order entry over real-time WebSocket feeds.
   • Customized the TradingView charting library and contributed an upstream fix for a low-timeframe candlestick bug, merged into TradingView's public repository.
   • Designed a low-latency Go order-matching microservice using splay trees, a 90%+ throughput improvement over the legacy Node.js engine; also built an HD-wallet key-management service.

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Education

1. University of Waterloo

   May 2024 – Sep 2026

   MMath in Computer Science (Thesis-based) · Waterloo, ON, Canada

   • Research in fraud detection and anti-money-laundering for Web3 and DeFi. Supervisor: Prof. Diogo Barradas.
   • International Master's Award of Excellence and CrySP top-up funding. GPA 3.7/4.0.

2. Amirkabir University of Technology

   Sep 2018 – Feb 2023

   B.Sc. in Computer Science · Tehran, Iran

   • Top 0.2% nationally in the university entrance exam. GPA 3.7/4.0.
   • Thesis: a cross-platform non-custodial crypto wallet in React Native with a new BIP39 master-seed generation approach.

Skills

Languages

TypeScriptJavaScriptGoPythonJavaSQLCSolidity

Front-End

ReactNext.jsReact NativeReduxReact QueryTailwind CSSHTML5/CSS3

Back-End & APIs

Node.jsExpressGraphQL (Apollo)RESTgRPCWebSocketsRabbitMQKafka

Databases

PostgreSQLMySQLMongoDBRedisSchema designIndexingShardingReplication

Architecture

System designMicroservicesAPI gatewaysEvent-driven systemsDistributed systemsCachingConsensus & replication

Data

Data pipelines & ETLApache SparkKafka streamingData lakesPandas / NumPy

DevOps & Cloud

DockerKubernetesCI/CDAWSGCPAzureVercelMonitoring

Practice

OOP/FPDesign patternsTDD/DDDCode reviewAgile/ScrumTechnical leadershipAI-assisted development

Open source

• functional-hooks★ 1

  Just another react custom hook library focused on being light-weight, simple, and easy to use.

  TypeScriptnpm
• crypto-wallet★ 1

  A cross‑platform cryptocurrency wallet for mobile devices featuring an alternative approach to BIP39 mnemonics in creating the master‑seed used in BIP32 HD‑wallets , that improves…

  TypeScript
• solidity-gas-optimizer★ 0

  Ethereum smart contracts can be expensive. This project investigates gas optimization techniques in Solidity and develops a static analysis tool to identify and suggest…

  Python
• CS846-final-project-source-code★ 1

  This repository contains the source code for the paper: `Detecting Potential Fraudulent Trading Patterns in Decentraland: A Data-Driven Analysis of the Ethereum Network and…

  HTML
• reverse-proxy★ 0

  A fully functional, configurable yet simple reverse-proxy which you can use it to manage and secure your existing applications.

  TypeScript
• web-scrapper★ 0

  A simple tool for cloning website sources in a click of a button.

  TypeScript
• golang-mail-server★ 1

  An email notification and admin system for schools, written in Go.

  Go
• e-track-extension★ 1

  A typescript manifest/v3 chrome extension. I intend to develop it to become a mail tracker with some unique features not available on the market.

  JavaScript

Also: an upstream fix for candlestick rendering on low timeframes, merged into TradingView's public charting library. More on GitHub.

Publications

1. The Dark Art of Financial Disguise in Web3: Money Laundering Schemes and Countermeasures

   H. Sarkhosh, U. Maroof, and D. Barradas. Proc. 20th Annual APWG Symposium on Electronic Crime Research (eCrime), 2025. First author.

2. Inside the Crypto Laundering Machine: A Taxonomic Study of Crypto Money Laundering Schemes and Countermeasures

   H. Sarkhosh. MMath thesis, University of Waterloo, 2026.

Teaching

• Graduate Teaching Assistant, University of Waterloo 2024 – 2026

  CS 459/698 Security & Privacy (designed assignments and the final exam; guest lecture on blockchain security), CS 231 Algorithmic Problem Solving, CS 246E Object-Oriented Software Development, CS 116 Intro to CS.

• Undergraduate Teaching Assistant, Amirkabir University of Technology 2019 – 2022

  Web Programming (React/TypeScript) and Advanced Programming (OOP/Java).

Contact