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Engineering Archive

Explore the complete set of case studies across exchanges, fintech, security, and compliance systems. Filter by domain, tech stack, or keywords to find the most relevant architecture work.

22 projects shown
Browser Extension / Productivity AI

ZenApply

A browser extension that ingests job listings at scale and auto-fills complex applications across 30+ ATS platforms, writing the free-text answers in the applicant's own voice.

NestJSBullMQReact / ZustandPostgreSQLChrome Extension (Manifest V3)
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DeFi / P2P Exchange

Midl

A decentralized P2P exchange enabling crypto on/off-ramping for any fiat currency via collateralized custodians.

NestJSMongoDB (UTXO Modeling)Alacrity (EOSIO Fork)Socket.ioAWS KMS
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Consumer FinTech / Web3 UX

Handle Pay

A seedless, gasless, multi-chain smart wallet powered by Biometric Passkeys and Account Abstraction.

React Native (Expo)NestJSWebAuthn / PasskeysZeroDev (ERC-4337)LazorKit (Solana)
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Privacy Payments / Solana

Ghost Pay

A privacy-first payments app live on Solana mainnet: shielded vaults, proof-backed transfers, and viewing keys for the people who still need to see the books.

Next.jsSolanaSolana Wallet AdapterZero-Knowledge Proofs
View Case Study →Details ↗Source ↗
Agentic AI / Content Automation

Tokenomics Content System

A multi-agent content pipeline built on Google ADK, where specialized agents research, plan, write, illustrate and publish, and a deterministic quality gate decides whether they get to stop.

Google ADKTypeScriptNestJSNext.jsGemini
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Web3 Security / Smart Contract Auditing

Bulwark

The first automated auditor for Solana that combines Rust-native AST parsing with encrypted on-chain reputation.

Rust (Syn, Tokio)NestJSAnchor FrameworkArcium (MPC Encryption)OpenAI GPT-4o
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DevSecOps / Web3 Infrastructure

Nxellent

A full-stack Web3 security platform that correlates Smart Contract risks with Frontend vulnerabilities.

NestJSDocker (Ephemeral Containers)BullMQ / RedisSemgrepSolana Web3.js
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FinTech / Commodities Trading

BullionFX

A hybrid CEX for tokenized gold that uses the Stellar Blockchain as a high-speed internal settlement engine.

NestJSStellar SDKSolidity (EIP-712)Shamir's Secret SharingGnosis Safe SDK
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DeFi / Algorithmic Trading Protocols

Elektrik DEX

A high-frequency Central Limit Order Book (CLOB) DEX on LightLink L2 featuring TWAP execution and ve-Tokenomics.

NestJSSolidity (Foundry)Redis (Binary Search Trees)The GraphWebSockets
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Media / GameFi / Interactive TV

CTV (Gran Hermano)

The official Web3-integrated trivia companion app for Gran Hermano Argentina.

NestJSMongoDBWeb3AuthReactRedux Toolkit
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GreenTech / Web3 Mobility

EcoRydes

A decentralized P2P carpooling platform that rewards carbon savings with Solana-based tokens.

Expo (React Native)NestJSSolana Web3.jsPusherMoonPay
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Social Good / Web3 Events

HuddleUp Protocol

A decentralized event platform that incentivizes social good by airdropping crypto rewards to verified volunteers.

Neo4j (Graph DB)NestJSSolidityWeb3AuthNext.js
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AdTech / Web3 Marketing

Infra DApp

A decentralized influencer marketing protocol with KPI-weighted rewards and cross-platform analytics aggregation.

NestJSNeo4j (Graph DB)Alacrity (EOSIO)RedisWebSockets
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DeFi / Yield Farming

Kompwnd

A high-frequency yield compounding protocol with graph-based referral structures on Alacrity.

NestJSNeo4j (Graph DB)Alacrity (EOSIO)DemuxAngular
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DeFi / Growth Engineering

Mento Airdrop

A gamified DeFi loyalty platform tracking cross-chain trading activity and social engagement for community rewards.

NestJSThe GraphMongoDBDiscord.jsTwitter API v2
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GameFi / Streaming

Script TV

A decentralized Watch-to-Earn streaming platform with mutable NFT glasses and multi-chain synchronization.

NestJSSolidity (ERC721A)Video.jsThe GraphAWS S3
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Supply Chain / Trade Finance / Document Authentication

TruStamp

A blockchain-powered escrow platform for international trade using OpenAttestation document verification and NFT-based title transfer to eliminate counterparty risk in cross-border transactions.

NestJS 11React 19 + ViteMongoDB (Mongoose ODM)Solidity 0.8 + HardhatEthers.js v5
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Computer Vision / Sports Technology

Formole

A virtual soccer coaching app that analyses a phone-recorded kick with pose estimation and returns the kind of correction a coach would give.

PythonTensorFlowOpenCVPose EstimationAWS
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Computer Vision / Video Processing

Spintip

Automatic tennis highlight generation: object detection segments a match into rallies, and the cut is assembled from play, not from a person scrubbing a timeline.

PythonFlaskTensorFlowOpenCVReact
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Computer Vision / EdTech Safety Systems

Navex

Face-recognition attendance for school buses, built to work in the worst possible conditions for face recognition and to keep working when the network does not.

PythonFace RecognitionDeep LearningNode.jsMongoDB
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Geospatial AI / Risk Assessment

MapApp

Wildfire exposure assessment for Canadian properties: country-scale raster risk layers made interactive in a browser, with an escape-time estimate attached to a specific address.

PythonGeospatial Analysis (GDAL / Rasterio)Machine LearningPostGISRaster Tiling
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Computer Vision / Human-Computer Interaction

Duckends

Feedback collection with no form and no button: real-time custom object detection reads a thumbs-up or thumbs-down from a camera feed.

PythonTensorFlowOpenCVCustom Object DetectionEdge Inference
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