Pierre Marais

Experienced Software Engineer with 9+ years of experience and a track record of delivering distributed, scalable solutions.

KotlinReactScalaTypescriptPythonPostgreSQLKafkaKubernetesDockerLLMRAGTransformers

About me

I really enjoy working with motivated people to solve real-world problems. My approach to software engineering is very pragmatic. I am technology agnostic and believe that the best tool is the one that the team is most comfortable with.

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Projects

Pragmatic Interview

Aug 2024

Built an educational platform offering curated questions on all software engineering topics, along with an AI assistant to help people land their dream job as a software engineer.

ReactNext.jsTailwindCSSTypeScriptChatGPTLLM

https://www.pragmaticinterview.com

Portfolio

Apr 2024

Built & open sourced this portfolio website

ReactNext.jsTailwindCSSTypeScript

https://github.com/Deeds67/portfolio/

Rolling-Aggregator

Mar 2024

Implemented an application that consumes a stream of data and does a 60 second rolling aggregation of the data. Provides the aggregated result in O(1) time.

KotlinKtorConcurrencyLocks

https://github.com/Deeds67/rolling-aggregator

Redis-Clone

Mar 2024

Built a Redis clone in Rust to learn about the internal workings of Redis and the RESP-protocol.

RustRedisRESPConcurrency

https://github.com/Deeds67/redis-clone

QR-File-Transfer

Oct 2023

Developed a website that enables you to transfer files between devices without an internet connection. Converts files into QR codes.

ReactJavascriptFile CompressionZLib

https://github.com/Deeds67/qr-file-transfer

Backup & restore utility

Mar 2023

Built scripts used to spin up a full linux dev environment with all of my required software and custom settings.

Bash

https://github.com/Deeds67/backup-and-restore

Cryptocurrency Arbitrage

Nov 2022

Implemented an algorithm that detected arbitrage between different currencies by representing them in an undirected graph and using the Bellman Ford algorithm to detect negative weight cycles.

Scalascala-cliAlgorithmsGraph traversal

https://github.com/Deeds67/cryptocurrency-arbitrage

OrderBook parser

Jun 2022

Wrote an OrderBook implementation that would parse very large XML files containing millions of order book entries. Used efficient data structures like PriorityQueues (Heaps) to reduce parsing time to a few seconds.

KotlinXMLTradingOrderBookData Structures

https://github.com/Deeds67/order-book

Candlestick price histories

Jun 2022

Implemented an application that consumed a stream of json, persisted into a time-series database (TimescaleDB), and exposed an endpoint that would summarize this data and extrapolate missing data.

KotlinKtorTimescaleDBWebSocketsRESTDocker

https://github.com/Deeds67/candlestick