Stjohn Piano Email & Phone Number

Role:- Add support for new currencies- Add support for staking- Add various new features- Build SolidiSwap

Role:- Technical assistance and advice.

• Solidi (solidi.co) is a UK-based cryptocurrency exchange.
• Upgraded Solidi system to a major new operating system version.
• Designed, built, and released mobile app for Solidi for both iOS and Android.
• Implemented state-of-the-art logging throughout Solidi system.
• Built internal software for regulatory compliance, allowing Solidi to pass the registration requirements for the UK Financial Conduct Authority (FCA) in July 2021.

• Implemented support for new cryptocurrencies in the Solidi exchange application: Ethereum (ETH), Ripple (XRP), Cardano (ADA).
• Designed and built secure cold storage solutions for ETH, XRP, and ADA.
• Implemented a tradebot for buying and selling cryptocurrency on other exchanges.
• Implemented secure RabbitMQ messaging to handle communications between various cryptocurrency clients and the main system.
• Designed and built a new version of the Solidi trade engine, using the Kafka event streaming platform.

Valencia, ES

Work From Anywhere, Remote, OO

• Toptal (toptal.com) is an exclusive network of the top freelance software developers, designers, finance experts, product managers, and project managers.Most recent projects:
• For a payment processor startup: Ethereum smart contracts to accept customer payments, and a Python package to manage the contracts. Studied the USDT-Tether stablecoin in detail to achieve this.
• For a raffle application: Detect and store Ethereum smart contract events (payment, raffle completion, winner selection).
• For a financial metrics company: Heavily parallelised extraction and storage of the data in the entire Bitcoin blockchain. See: https://telablog.com/project-scanning-through-the-entire-bitcoin-blockchain
• For a market-maker company: Analysis and automated deployment of liquidity positions on Uniswap v3.

Worblaufen, Berne, CH

hypt is a SAAS that addresses an advertising channel called Personal Media Ads. Instead of impersonal social media ads, hypt helps companies boost sales by asking their customers to send measurable personal recommendations through messenger apps to their friends & family.Role:- develop the backend services with Python & FastAPI- ensure that the code runs.

• Edgecase (edgecase.net) is a blockchain-based web publishing system.
• Designed and built a toolset to allow a user to securely store Bitcoin offline.github.com/sj-piano/bitcoin_toolset_python3
• Designed and built Edgecase Datafeed, a secure publishing system. All published articles are digitally signed and timestamped in the Bitcoin blockchain.

• Abacii is a UK-based speech recognition consultancy.
• Managed 17 transcription projects, totalling 336,738 transcriptions (transcribed speech data is used to test the accuracy of speech recognition systems).
• Hired and trained transcribers.
• Wrote transcription guide for new transcribers.
• Wrote software scripts to perform proofreading, spellchecking, and statistical selection for Quality Assurance (QA) testing on transcription projects. Average QA score was 92.1%.
• Wrote software scripts to process large Nuance Recogniser logs and extract data for transcription.

• Implemented and tuned speech recognition grammar systems in English and Spanish.
• Installed Nuance Recogniser system in a CentOS VM.
• Ported VBA macros for project report generation from Excel 2007 (Windows XP) to Excel 2011 (Mac OS X 10.6.8).

Canterbury, Kent, GB

• Jali is a UK-based furniture factory.
• Developed a prototype of an automated 3D woodworking machine. It used a Raspberry Pi to run a Baldor motion controller and Omron servomotors.
• Implemented a Raspberry Pi-based networked camera system. Used a picamera driver and cherrypy webserver. Three of these cameras were installed in the Jali automated furniture painting system.

• Wrote scripts to extract and sort large amounts of transcription data.
• Analysed speech recognition system outcomes.
• Partitioned and managed work among the transcriber team.
• Transcribed English & Spanish audio files.

Canterbury, Kent, GB

• Built database system for company website image gallery (thumbnail generation, watermarking, security).
• Wrote a shape analysis software package for an image recognition application.

Mumbai, Maharashtra, IN

• Wrote code to analyse data produced by ultrasound signals moving through steel bars.
• Wrote additional code that reduced testing time from 20 minutes to 1 minute.

Master'S Degree, Electronic Engineering

Education record