ephrem.dev

$ whoami

ephrem demelash — backend engineer

$ cat summary.txt

I build distributed systems, APIs, and Web3 infrastructure.
6+ years shipping production with Node.js, Go, and Rust.

$ ls skills/

node.jstypescriptgorustgraphqlkafkapostgresqlredisaws
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# projects

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BoxExchanger Liquidity Automation

Crypto exchange core services plus automated Uniswap V3 liquidity rebalancing built with Node.js, TypeScript, and AWS Lambda.

  • → 30% tighter spreads across ETH/USDC pools
  • → 24/7 autonomous tick rebalancing with custom risk bands
node.jstypescriptuniswap v3 sdkaws lambdadynamodb

AffCollect Intelligence Platform

Aggregated high-volume affiliate revenue data via a microservice mesh with concurrency, message queues, and advanced caching.

  • → 10x faster aggregation with MQ fan-out
  • → 90% boost in analyst efficiency
node.jstypescriptgraphqlkafkamongodb

Cloudflare Workers Automation Suite

Distributed auth, notifications, and dynamic forms platform built on Cloudflare Workers, Wrangler, and the h3 framework with TypeScript.

  • → End-to-end auth flow with queue-based producer/consumer for email OTP and session cleanup
  • → Project creation pipeline with KV-backed metadata plus R2 file uploads
cloudflare workerswranglertypescripth3kv

# blog

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Getting Started with Cloudflare Workers and h3

Spin up a typed API on Cloudflare Workers using the h3 framework, Wrangler, and a few minutes of setup.

Automating Uniswap V3 Liquidity with Node.js Lambda

Architecting a resilient rebalancer using the Uniswap V3 SDK, AWS Lambda, and CloudWatch Events.

# let's work together

I'm open to backend roles, contract work, and Web3 projects.

Get in touch