
Laurent Senta
Verified Expert in Engineering
GitHub Actions Developer
Lyon, France
Toptal member since July 27, 2018
Laurent is a full-stack developer skilled in front-end technologies like TypeScript, React, and React Native. For over seven years, he's worked on back-end software with Go, Python, and various big data and decentralized systems. Laurent's projects generally involve software architecture for complex businesses, rapid development for MVPs, quality tooling with testing, and continuous integration.
Portfolio
Experience
- Python - 5 years
- TypeScript - 5 years
- React - 5 years
- GitHub Actions - 4 years
- GitHub API - 4 years
- Next.js - 3 years
- Firebase - 2 years
- React Native - 1 year
Availability
Preferred Environment
GitHub, IntelliJ IDEA, MacOS
The most amazing...
...work I've done is fixing an error in HAProxy (used by Airbnb and Twitter) after going through the full stack—from the Java HBase code down to the TCP packets.
Work Experience
Owner | Consultant
IPDX
- Served as a freelancer/consultant and worked with 12+ clients, from small startups to medium-sized scaleups.
- Set up productivity and quality tooling for teams—improved CI, automated migration systems for Firestore, built testing infrastructure, etc.
- Built applications using Electron, React, React Native, Create React App, and Next.js.
- Worked as a consultant for decentralized and distributed systems technologies.
- Provided research and development, market research, prototyping, content marketing, writing, and additional services relating to the design, build, and deployment of blockchains.
Senior Productivity Engineer
Protocol Labs
- Took ownership of Testground, a platform for testing, benchmarking, and simulating distributed systems. Improved its stability, reducing the error rate from 40% to less than 1%. Rewrote a Docker executor.
- Developed a tool for interoperability testing of libp2p across Rust, Go, and JavaScript. Set up the entire system, including GitHub Actions, test definitions, and SDK updates to ensure seamless integration.
- Built a testing framework for IPFS/Kubo, created a custom DSL for the team, and ported over a thousand test cases from Shell. Created the SDKs, set up GitHub Actions, and created a dashboard for conformance testing across the IPFS ecosystem.
Senior Full-stack Engineer
SUNDAY
- Planned, designed, and released new features as a full-stack engineer using React and Flask.
- Developed a workflow to help the team document and integrate 10+ different APIs by generalizing our internal specs.
- Served on architecture and software design to help the team implement the new generalized framework using mob programming, peer programming, and more.
Senior Full-stack Engineer
BIOGEN
- Developed and maintained a React and Next.js application dealing with multiple countries and languages.
- Architected and owned the DynamoDB and Functions back end. Implemented data models adapted for large-scale meeting scheduling, CRM-like data models, and more.
- Provided TypeScript coaching for the rest of the team, code generation, and data models mapping with our CMS.
Senior Architect
Cascade8
- Trained junior developers to work with Angular, Firebase, and decentralization.
- Acted as an interim CTO for software design and architecture of the app.
- Implemented front end components in Angular and AngularFirestore.
- Maintained the CircleCI and Jenkins systems that check PRs and auto-deployed code.
- Implemented and supported the QA and release process.
- Contributed to data storage facilities, backup, data migrations, and more.
Decentralized System Architect
3box
- Designed and coded for a pinning service for IPFS/ORBITDB using AWS, Typescript, and JavaScript.
- Implemented an encryption workflow for a Decentralized ID system.
- Contributed to the architecture and design for the decentralized data storage platform.
Data Storage Platform Owner
Zyte
- Owned the storage platform. Transitioned to Docker and added CI systems. Maintained the storage API and platform, fixed bugs, and built new features.
- Designed and released distributed synchronization algorithms.
- Discovered and resolved an issue in HAProxy relating to an RFC implementation mistake on retries policies and REST APIS.
- Designed and released a testing framework for microServices and Kafka systems.
Data Engineer
Amobee
- Served as a data management platform engineer (handling around 100+ petabytes) in a team of six. Contributed to design, testing, development, deployment, validation, and maintenance.
- Contributed to optimization algorithms for our data processing platform, a code generation framework to optimize our storage system and simplify database maintenance, and an automated analysis of our codebase to detect hotspots in storage schemas.
- Did database optimization using vertical partitioning algorithms for the company's DMP. Adapted a state-of-the-art algorithm in vertical partitioning for a nested database. Added tools and software patterns to facilitate extraction from the database.
Experience
Whena.re: Easy to Use Timezones
https://whena.reIt's built with Next.js, React, MobX, and a library I built to design "orbital data."
Clepsydra: Focused Chrome Extension
https://chrome.google.com/webstore/detail/clepsydra/jlagbacmpphjengiipimojjibicekmboIt's a Chrome Extension built with React and CRA.
Landing: https://www.singulargarden.com/clepsydra/
Tickingfocus: Focus Desktop App
https://www.singulargarden.com/tickingfocus/It's part of my own "full-stack" training; I used this project to build and release my first Electron application. It's heavy, but this is MVP y-grade software: It took less than three days to create, release, and prove the concept.
Built with React, MobX, and Electron.
Patch.txt
My company provides a specialized storage API. Some requests would fail randomly with a cryptic Python exception. Nobody had any idea why. It happened for years, clients would complain but nobody found the source of the bug.
In the first week on the job, I went from analyzing the upper layer of our stack (Java, Jython, HBase) down to the network TCP frames.
I discovered a complex combination of:
• special HAProxy case,
• most HTTP client (WGet, Ruby, etc.) behaving dangerously and against the RFC on retrying POST requests,
• Python behaving actually correctly but our application was not ready for it.
I specialize in Python/Java, but if I have to go down TCP frames and C code, I'll do it.
The best? The patch REMOVES code.
Blockchain Learning
https://www.lsenta.ioEducation
Master's Degree in Scientific Computation and Image Processing
EPITA - Paris, France
Skills
Libraries/APIs
React, GitHub API
Tools
Apache ZooKeeper, IntelliJ IDEA, GitHub
Languages
TypeScript, JavaScript, Python, Java, GraphQL, Go
Paradigms
Test-driven Development (TDD), Functional Programming
Storage
HBase, Distributed Databases, Cloud Firestore, HDFS, Amazon DynamoDB, Google Cloud
Frameworks
Next.js, Hadoop, React Native, Flask
Platforms
Docker, Blockchain, Firebase, Ethereum, MacOS, Apache Kafka, Amazon Web Services (AWS), Kubernetes
Industry Expertise
Marketing
Other
Distributed Systems, GitHub Actions, Decentralized Systems, IPFS, Prototyping, OrbitDB, Metaheuristics, Decentralization, Development, Software
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