Ian Warutere

Project Overview:

• Spearheaded the development of the MVP for Project Mocha, an innovative solution to tokenize coffee farm assets using blockchain technology.

Key Achievements:

Designed and implemented smart contracts for asset tokenization using ERC-6551 and ERC-6960 standards, enabling land parcels and individual coffee trees to be represented as NFTs. Developed an ERC-20 token for yield mining and ecosystem utility, ensuring seamless distribution of tokenized coffee yield. Established a robust backend system leveraging GeoDjango and PostgreSQL with PostGIS to manage token minting and spatial data relationships. Built a React-based frontend with TypeScript, integrating mapping libraries for asset visualization and Lisk Explorer APIs for real-time updates.

Technical Stack:

Solidity, Lisk L2, React, TypeScript, GeoDjango, PostgreSQL/PostGIS, Django Rest Framework, Leaflet.js/Mapbox.

Impact: Enhanced transparency across the supply chain, improved access to decentralized finance for farmers, and revolutionized asset management in the coffee industry.

• Spearheaded the design, development and optimization of the Tivobet platform.
• Implemented caching solutions using Redis for improved performance.
• Integrated RabbitMQ and Redis as messaging solutions for transaction processing.

Betting App Development:

• Developed Express js APIs for the betting site handling payments to and from the site, transactions, sportsbook odds, virtual games and casino games.
• Implemented a websockets architecture for live feeds and real-time communication, enhancing user engagement and retainment.
• Integrated authentication & authorization mechanisms for secure user access and transactions using jwt, oauth and role-based access.
• Integrated casino mini games to drive user engagement, using Typescript, nodejs, RabbitMQ, Redis Cache, webhooks to process events.
• Built football tournament minigames to drive user engagement using a round-robin scheduler algorithm.

Wallet Development:

• Built ERC-4626-based vaults in solidity for the casino to ensure safe deposits and withdrawals for crypto users.
• Built ERC-4337-based smart contract wallets in solidity for users for a seamless, secure crypto solution.
• Architected and built a secure non-custodial wallet using ethers.js for users to deposit to, stake with and withdraw funds from for both fiat and crypto. (Typescript, nodejs, mongodb, webhooks)
• Integrated payment gateway APIs for fast, secure user deposits and withdrawals currencies to process more than 2000 transactions a day.(Typescript, rabbitMQ, webhooks)

DevOps:

• Used dockerized microservices, Redis, RabbitMQ and kubernetes' container orchestration for dynamic scaling of the backend services(auth, bets, wallet, partner webhooks, streaming API) to handle more than 50 000 requests a day with low latency.
• Implemented Ansible to automate provisioning and configuration management, for consistent and scalable environments.
• Integrated Ansible into the CI/CD pipeline to automate the deployment process.
• Implemented the ELK stack for centralized log management, improving visibility of the system and application performance.
• Developed the API gateway for the microservices for low latency service discovery.(Typescript, RabbitMQ Message Queues)

• Developed a Customer Loyalty Program PaaS for different brands, with loyalty points issued as tokens on NEAR Blockchain.

PoS System Development:

• Developed a web-based POS system for small businesses to integrate at a lower cost than on-prem POS systems.
• Developed the POS API in Express JS for easy integration with the front end.
• Integrated authentication & authorization mechanisms for secure admin access and transactions using jwt, and role-based access.
• Developed the accounting module to enable business owners assess business performance and generate financial statements.
• Integrated payment gateway APIs for robust checkout options using webhooks, and RabbitMQ to process transactions.

User Wallet:

• Used typescript, postgresql and node js to develop a secure user wallet for both crypto and fiat currency.
• Created user wallets on the NEAR chain to receive and transact the loyalty tokens.
• Developed a QR code payment option for an improved user experience at checkout.
• Integrated various payment gateway APIs for seamless wallet deposits.

Smart Contract Development:

• Developed scalable, secure smart contracts in rust for the brands' loyalty tokens.
• Developed the tokenomics for the loyalty program.
• Developed the smart contract for the GEMA token in rust.
• Created the swap protocol for the loyalty tokens, with tokens swappable for another brand's tokens, and pegged on the GEMA token.

• Designed and developed an early-warning system for climate resilience, integrating real-time and historical satellite data with geospatial analytics.
• Implemented a scalable backend using Node.js and PostGIS, enabling high-performance spatial queries for monitoring environmental changes.
• Integrated Google Earth Engine (GEE) to process and analyze satellite imagery, enhancing climate forecasting capabilities.
• Built a dynamic geospatial frontend with React and Leaflet.js, allowing users to visualize climate risk zones and environmental data interactively.
• Developed a robust authentication and role-based access control (RBAC) system, ensuring secure multi-tier access to the platform based on user privileges.
• Optimized database performance, leveraging PostGIS spatial indexing and query tuning to handle large geospatial datasets efficiently.
• Implemented API endpoints for data ingestion, processing, and retrieval, enabling seamless integration with external climate monitoring systems.
• Deployed and maintained the system on cloud infrastructure, ensuring high availability and scalability.

Tech Stack: Node.js, React, PostGIS, Leaflet.js, Google Earth Engine, Satellite Data Processing, Role-Based Access Control (RBAC), Cloud Deployment

• Revamp the Betfuse system to handle scaling for the more than 1 million Betfuse app users
• Create a live streaming architecture for match data for the users with low latency.
• Create a predictive analytics engine for match stats to drive user engagement
• Create trivia mini games with ERC20 token rewards linked to user profiles

Analytics:

• Created an analytics engine for live matches using kafka streams, python and golang to derive insights for users on the platform.

Streaming API:

• Used websockets, typescript and nodejs to create a streaming service for insights and match data for the mobile app.

• Designing and Implementing a cloud-based mining infrastructure for the CNX mining mobile app. The apps acted as rollup nodes with the underlying chain providing security. (Typescript, websockets)
• Customizing & instantiating a private chain based on Ethereum for axtrum. (geth)
• Designing, writing and deploying the smart contract governing the tokens and the ecosystem(solidity).
• Building a non-custodial wallet for the platform users. (Typescript, nodejs, mongodb)
• Building a RESTful API for the mobile app with user authentication, email verification and a user referral system in Node.js. (Typescript, REST, nodejs)
• Building a GraphQL API for indexed blockchain-emitted events to reduce latency. (GraphQL, Typescript, Postgres)
• Building a websockets, event-driven API to stream live mining rates, and active users in your mining pool. (Websockets, Typescript, nodejs)
• Built a secure admin API to enable remote monitoring with a dashboard to monitor referrals, (Typescript, nodejs, )

• Developed database models for NFT's on the CHIA blockchain
• Developed scripts to convert CSV file data to iterable objects and JSON format to be passed to CHIA
• Developed an expressJS server for running the script