Long Hoang Le

!Ph.D. in Informatics!

Zürich, Switzerland

longlh255.at.gmail

RESEARCH

I am interested in the theory and practice of!dependable distributed systems. My contributions

to systems research have focused on designing, implementing and evaluating scalable, strongly

consistent systems, particularly in the context of state machine replication, the core

component of many systems: Windows Azure Storage, MySQL replication group, Google

Spanner, blockchains, etc.

To a large extent,!I ﬁnd myself interested in the interplay between theory and practice. Before

and during my Ph.D., I have been working in some start-ups and industrial ﬁrms. My

practical experience of web and blockchain applications development gained from small to

large scale projects with industrial standard.

SKILLS

Knowledge in Computer Science, with competencies in algorithms, data structures, operating

systems, programming languages, and distributed algorithms.

Industrial experience with web/application development (NodeJs, ExpressJs, ReactJs),

blockchains (Bitcoin derived), and related technologies.

Experience in the development of multithreaded and distributed client-server infrastructure,

using different network protocols (e.g., RDMA, TCP/IP, atomic broadcast and atomic

multicast), and dealing with problems related to distributed and multithreaded code, such as

dead-locks and live-locks

Experience with programming, optimizing and debugging. Hand on experience with

multiprogramming, multi-platform coding (Linux, Mac OS X, and Win32)

Applications, tools, and frameworks

Programming languages: Java (Java SE 6 Programmer certiﬁed), Javascript (NodeJs), TypeScript,

Bash scripting, Python.

Backend frameworks: ExpressJs, Koa, Sails

Frontend: HTML5/CSS3, React, React Native,

Databases: Relational databases (SQL), NoSQL (MongoDB, Redis)

Blockchains: Bitcoin & Bitcoin derived blockchains, SmartContract, Wallets, Payments

Cloud Stack: Amazon: EC2, S3, RDS, SQS, Elastic Beanstalk, VPC, Lambda.

Containerize: Docker, Docker Compose, Kubernetes

CI/CD pipeline: Travis/Codeship, Heroku, Jenkins

Network protocols: TCP/IP, UDP, RDMA

Others: WebRTC, Streaming

Languages

Vietnamese (native), English (advanced, TOEIC 880 certiﬁed on Oct – 2010, TOEFL iBT 87

certiﬁed on Aug – 2008 )

PROFESSIONAL EXPERIENCE

Founder/CTO, Snode.co — Feb 2018 – Dec 2019

Snode is a Swiss startup with an international team. Snode provides an innovative blockchain-based

ecosystem that aims at providing an integrated environment for multiple blockchain-based services.

The core value of Snode is a masternode solution with a wide range of high-quality masternode

services including shared, instant, dedicated, trustless hosting. Other services and products

introduced in Snode’s EcoSystem include crypto exchange, digital assets, blockchain project support.

snode.co has several components that have been developed from scratch:

• Landing page, user dashboard application (React, Redux, NodeJs)

• Backend server, transaction processor, node status monitor (NodeJS, Python, Bash scripting)

• Masternode infrastructure (Python, Bash scripting, Nodejs, Kubernetes)

• Snode blockchain (C++, BTC derived source code)

• Snode mobile wallet (React Native, NodeJs)

• Snode exchange (https://exchange.snode.co/): Bitshare based decentralized asset exchange

Achievement: In its ﬁrst year of operation, snode.co platform acquired above 8,000 crypto

investors, more than 2,000 of which actively invested and reinvested. The system supported

over 150 different bitcoin derived blockchains, processed approximately 15,000 incoming and

outgoing transactions a day. The infrastructure was deployed on a cluster of more than 600

machines across Europe, running 2,000 masternodes concurrently. In early 2020, Snode was

successfully acquired by a Denmark ﬁnancial startup stakem.io.

Chief R&D, Silicon Prime, HCMC, Vietnam — Jan 2017 – Jan 2018

SiliconPrime is a US-based product team, started at Stanford Lab in Silicon Valley, the heart of

innovative technology. Co-founders launched the mobile application development ﬁrm in 2011.

SiliconPrime has evolved and developed a unique Squad model that enables clients to have their

team to build innovative software products.!

Responsible for near term technical execution. Enabling the execution and adoption of

technologies! follow the requirement of the company and customers' expectation.

Collaborating internal & externally, working across teams to support technology development

and company development. Transfer new technologies, products, and development processes

into and out of the company. Suggesting tools and frameworks to enhance employee

performance and skill development.

Technical Architect, Silicon Prime, HCMC, Vietnam — Mar 2015 – Jan 2017

Involved in:

- Implementing application features.

- Inspecting application performance, doing optimization.

- Mentoring technical team.

- Working with clients to analyze requirements

Required Skill sets: NodeJs, NoSQL, AWS, Proﬁling & optimizing JS app.

Technical Consultant, Forbes Vietnam, HCMC, Vietnam — 2013

Analyzing & designing for internal CRM system using vTiger.

Responsible for collaborating with third-party agency (www.moore.vn) to develop the digital

site (http://forbesvietnam.com/).

Technical consulting: proposing and installing tools & frameworks for internal use.

Technical Team Lead, tiNiPlanet, HCMC, Vietnam — Jul 2012 – Mar 2015

tiNiPlanet is a Massively Multiplayer Online Game based upon the latest web technologies that are

capable of supporting thousands of accesses simultaneously and able to spread out to mobility

devices. tiNiPlanet is using a variety of JavaScript libraries at front-end, NodeJS, MongoDB database,

and socketIO as back-end framework.

System analyzing & designing, implementing/enhancing the game product, informal testing,

estimating/assigning tasks

Achievement: tiNiPlanet web version was launched on 04th Oct 2014, acquired 65,000 users

with 700 online users within 1 week

Framework stack: Javascript, NodeJs, MongoDB, Redis at the backend. PhaserJS + Impact JS

game engine at the frontend, Cocoonjs for porting games to mobiles.

Software Engineer, CSC Vietnam, HCMC, Vietnam — Sep 2010 – Jul 2012

Enhancing/ upgrading FirstDoc application with the requirements from onshore clients in

UK and US.

Implementing enhancements to current functions with new requirements, customized

applications based on clients’ needs. Fixing bugs, issues, etc.

Framework stack: Java, Documentum, DQL, SQL, Unit testing, Sencha, Sencha Touch.

EDUCATION

Università della Svizzera italiana, Lugano, Switzerland

Ph.D. in Informatics - 2020

Thesis: Scaling state machine replication

Advisor: Fernando Pedone - Professor, USI

International University - Vietnam National University, Ho Chi Minh City, Vietnam.

Master in Information System Management - 2014

Thesis: Intelligent faceted search on RDF data

Advisor: Cuong Nguyen - Dean of Computer Science Department, HCMIU

International University - Vietnam National University, Ho Chi Minh City, Vietnam.

Bachelor in Computer Science - 2010

Thesis: Taxonomy Based Forum

Advisor: Cuong Nguyen - Computer Science Department Dean, HCMIU

PUBLICATIONS

RamCast: RDMA-based Atomic Multicast

Long Hoang Le, Mojtaba Eslahi-Kelorazi, Paulo Coelho, Fernando Pedone

ACM/IFIP International Conference (Middleware), December 2021, Québec, Canada

Developing Complex Data Structures over Partitioned State Machine Replication

Mojtaba Eslahi-Kelorazi, Long Hoang Le, Fernando Pedone

European Dependable Computing Conference (EDCC), September 2020, Munich, Germany

Scaling State Machine Replication

Long Hoang Le

PhD thesis in Informatics, Università della Svizzera italiana, July 2020, Lugano, Switzerland

DynaStar: Optimized Dynamic Partitioning for Scalable State Machine Replication

Long Hoang Le, Enrique Fynn, Mojtaba Eslahi-Kelorazi, Robert Soulé, Fernando Pedone

39th International Conference on Distributed Computing Systems (ICDCS), July 2019, Texas, US.

Dynamic Scalable State Machine Replication

Long Hoang Le, Carlos Eduardo Bezerra, Fernando Pedone

46th Annual International Conference on Dependable Systems and Networks (DSN), 2016, Toulouse, France.

Strong Consistency at Scale

Carlos Eduardo Bezerra, Long Hoang Le, Fernando Pedone

Bulletin of the IEEE Computer Society Technical Committee on Data Engineering, March 2016, 39(1).

TALKS

Scaling State Machine Replication

Poznań University of Technology, Poland, November 2019

PEER REVIEWS

International Conference on Dependable Systems and Networks (DSN) - 2017, 2018, 2020

International Conference on Distributed Computing Systems (ICDCS) - 2018, 2019, 2020

Conference On Principles Of Distributed Systems (OPODIS) - 2017

International Symposium on Reliable Distributed Systems"(SRDS) - 2017, 2018

ACM/IFIP International Conference (Middleware) - 2019, 2020

ACM Symposium on Principles of Distributed Computing - 2020

EuroSys - 2020

REFERENCES

Please contact me for the information of the references