Shadrach
From Canada (UTC-6)
Shadrach – AWS, React, Typescript
Shadrach is a strong senior full-stack engineer with deep expertise in AWS, Node.js, React, Next.js, and TypeScript. He has architected scalable backend systems, implemented event-driven architectures, and delivered real-time collaborative platforms, particularly in Web3 and AI-powered domains. Screenings confirm a client-first mindset and advanced proficiency in backend and frontend development. Shadrach is experienced in startup environments and direct client interaction.
7 years of commercial experience in
Main technologies
Additional skills
Direct hire
PossibleReady to get matched with vetted developers fast?
Let’s get started today!Experience Highlights
Senior Full-stack Engineer
An AI-powered research assistant platform built on indexed peer-reviewed literature, enabling real-time collaboration between researchers.
- Developed a critical data ETL pipeline for Indexing 250M+ peer-reviewed research records from OpenAlex dataset on Elasticsearch node, giving the AI research assistant citation-backed coverage across the full scientific corpus rather than a narrow slice of it.
- Built real-time collaboration infrastructure (Cloudflare Durable Objects, PartyKit, CRDT/Automerge, Postgres) supportingconflict-free concurrent editing of research artifacts, contributing to 200% user growth within weeks of release.
- Owned Kubernetes deployment, monitoring, and production operations across AWS, reducing mean time to detect production issues through centralized observability with Prometheus and Grafana.
- Shipped the research assistant's core API and multiple product features powering citation-backed search across 250M+ scientific records
- Contributed core smart-contract work (Solidity, Foundry) to the Desci Codex protocol, underpinning the trust and provenanc guarantees behind every published research object.
- Led UI engineering for Nodes protocol web app, architectural setup, blockchain integration (wallets, ethers.js, Wagmi, etc.), performance optimization and avoiding SSR pitfalls for modern web3 apps.
Full-stack Founding Engineer (part-time)
A DeFi protocol and DAO ecosystem with staking, liquidity management, and analytics.
- Designed and deployed multiple production Solidity smart contracts;
- Architected serverless backend infrastructure using AWS Lambda + DynamoDB;
- Built staking dashboards and analytics web apps with Next.js + TypeScript;
- Implemented subgraph indexing for blockchain data querying;
- Led end-to-end feature development across smart contracts, backend, and frontend.
Full-stack Web3 Engineer
A multi-chain crypto donation platform enabling nonprofits to receive donations across Bitcoin, Etheruem, EVM-compatible L2 chains and alternative chain.
- Led development of the multi-chain donation UI using React, TypeScript, ethers.js, wagmi;
- Provided blockchain Integrations across multiple EVM-compatible chains;
- Contributed to Cosmos Rust smart contracts;
- Implemented unit, integration, and E2E tests;
- Designed wallet connection and transaction UX flows.
- Cross-chain event indexing on MongoDb and development of internal analytics dashboard
Back-end Developer
Book-IT is a Hotel booking platform designed with clean layered architecture, role-based access control, and production-ready engineering practices. The system allows users to browse hotels, book rooms, and manage reservations, while admins manage inventory and operations.
- Demonstrates end-to-end ownership of a SaaS-style booking system;
- Production-ready authentication & access control system;
- Automated testing integrated into development workflow.
- Designed and implemented a layered REST API architecture;
- Automated test suites using Jest + Supertest for service and domain layers;
- Enforced code quality via Husky pre-commit and pre-push hooks.