Logo
Shadrach – AWS, React, Typescript, experts in Lemon.io

Shadrach

From Canada (UTC-6)flag

Full-stack Web Developer|Strong senior

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
AI
Architecture
Blockchain
Cloud computing
Cryptocurrency
Fintech
Fundraising
Hospitality
Travel
Open source
Enterprise software
Software development
Main technologies
AWS
4 years
React
5.5 years
Typescript
5 years
Node.js
4.5 years
Next.js
4 years
Ethers.js
4 years
Additional skills
Vercel
Kubernetes
Terraform
Rust
Solidity
Supabase
Docker
Wagmi
web3.js
RAG
Truffle
Amazon SQS
AWS Lambda
MongoDB
Amazon S3
Amazon SNS
Amazon RDS
Direct hire
Possible
Ready to get matched with vetted developers fast?
Let’s get started today!

Experience Highlights

Senior Full-stack Engineer
Jul 2022 - Dec 20253 years 5 months
Project Overview

An AI-powered research assistant platform built on indexed peer-reviewed literature, enabling real-time collaboration between researchers.

Responsibilities:
  • Architected and implemented a real-time collaborative backend using Cloudflare Durable Objects, WebSockets (PartyKit), and CRDT (Automerge);
  • Designed scalable API architecture using Node.js, PostgreSQL, Redis, AWS EKS, etc.
  • Built a reactive ingestion pipeline indexing 250M+ scientific publications into ElasticSearch deployed on Kubernetes'
  • Led frontend architecture using Next.js + TypeScript, improving performance, SSR stability, and testing structure;
  • Set up AWS EKS deployment pipelines and monitoring.
Project Tech stack:
Next.js
React
Typescript
Node.js
PostgreSQL
ElasticSearch
Kubernetes
AWS
Cloudflare Worker
Terraform
Docker
Monorepo
Prometheus
Apollo GraphQL
Amazon S3
Datadog
Founder & Full-stack Engineer
Dec 2024 - Nov 202510 months
Project Overview

Personal project: an AI-assisted immigration guidance platform with workflow automation and document support.

Responsibilities:
  • Built full-stack application using Next.js, Node.js, PostgreSQL;
  • Designed a structured workflow engine for user journey automation;
  • Integrated AI APIs for document analysis and guidance generation;
  • Deployed using Docker-based infrastructure.
Project Tech stack:
Next.js
Typescript
Node.js
Docker
PostgreSQL
AWS Lambda
Kubernetes
Terraform
Bash
React
Full-stack Founding Engineer (part-time)
Jul 2021 - Jul 20221 year
Project Overview

A DeFi protocol and DAO ecosystem with staking, liquidity management, and analytics.

Responsibilities:
  • 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.
Project Tech stack:
AWS
AWS Lambda
DynamoDB
Next.js
Typescript
Solidity
Wagmi
Ethers.js
AWS CloudFormation
AWS SES
Amazon SQS
Serverless Computing
Amazon SNS
Full-stack Web3 Engineer
Sep 2021 - Mar 20226 months
Project Overview

A multi-chain crypto donation platform enabling nonprofits to receive donations across Bitcoin, Etheruem, EVM-compatible L2 chains and alternative chain.

Responsibilities:
  • 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
Project Tech stack:
React
Typescript
Solidity
Rust
Ethers.js
Wagmi
Jest
Ethereum
Cosmwasm
MongoDB
Back-end Developer
Dec 2019 - Feb 20202 months
Project Overview

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.
Responsibilities:
  • 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.
Project Tech stack:
JavaScript
Node.js
Express.js
Apollo GraphQL
MongoDB
MongooseODM
Jest
Supertest
JWT

Education

2021
Computer Science
Bachelor's

Languages

German
Pre-intermediate
English
Advanced

Hire Shadrach or someone with similar qualifications in days
All developers are ready for interview and are are just waiting for your requestdream dev illustration
Copyright © 2026 lemon.io. All rights reserved.