Senior Backend Engineer
7 years building production Web3 systems and financial products at top-tier VC-backed unicorn startups. Expert in blockchain infrastructure, high-throughput APIs, and AI-augmented development_
COMPANIES I'VE WORKED WITH
- Proof of Play
- Gemini
- Nifty Gateway
- Belvedere
KEY EXPERTISE
EDUCATION
Georgia Tech
MS Computer Science • Machine Learning
Lake Forest College
BS Finance • Quantitative Analysis
Experience
7 years scaling Web3 infrastructure and financial products
Proof of Play
Senior Blockchain Infrastructure Engineer
Denver, CO – Remote
Denver, CO – Remote
- •Architected NoSQL blockchain indexer processing 1M+ daily transactions with sub-200ms p99 latency for 60K DAU
- •Led AWS CDK migration reducing cloud costs by 70% ($1.4M to $432K/year) through modular infrastructure
- •Designed CI/CD pipeline cutting deployment time by 90% (45min to 4min) enabling 3x faster iteration
- •Built multichain relay infrastructure serving 5M+ transactions/month across 12 EVM chains with 99.95% uptime
- •Implemented cross-chain mirroring webhooks with <3s settlement latency for real-time NFT marketplace transactions
- •Developed stablecoin marketplace API processing $2M+ monthly volume, reducing payment fees by 35%
- •Pioneered AI-augmented development with MCP tools reducing onboarding from 2 weeks to 30 minutes
Gemini / Nifty Gateway
Software Engineer
Denver, CO – Remote
Denver, CO – Remote
- •Drove full-stack development of custodial NFT marketplace generating $1.2B in revenue serving 1.8M users
- •Architected backend for custom ERC721 smart contracts handling 30K concurrent users ($91.8M in 3-day sales)
- •Built microservices ecosystem supporting 38M NFTs, reducing data sync lag from 5min to 15 seconds
- •Migrated Web3 APIs to serverless architecture cutting infrastructure costs by 45% ($80K to $44K/year)
- •Integrated CI/CD tooling enabling on-demand deployments and reducing failed deployment rate by 40%
- •Mentored junior engineers through code reviews and architecture sessions, resulting in 2 team promotions
- •Authored technical documentation reducing onboarding time from 4 weeks to 10 days for 40-engineer team
Belvedere Trading
Systems Engineer
Chicago, IL – Remote Hybrid
Chicago, IL – Remote Hybrid
- •Led incident response for institutional Bitcoin Options trading desk managing $100M+ in digital assets
- •Engineered full-stack observability platform reducing incident resolution time by 30%
- •Automated employee onboarding workflows with IAM integration saving 20 hours/month and reducing errors by 80%
- •Increased test coverage from 0% to 52% for internal applications, reducing production bugs by 40%
What Colleagues Say
Alex's expertise in blockchain infrastructure was instrumental in scaling our gaming platform to 60K daily active users. His serverless architecture reduced our AWS costs by 70% while maintaining sub-200ms latency.
Sarah Chen
VP of Engineering • Proof of Play
Featured Projects
High-impact systems across blockchain, DeFi, and NFTs
Blockchain Indexer at Scale
Proof of Play
- •Processing 1M+ daily transactions across custom Conduit Blockchains
- •Sub-200ms p99 latency serving 60K daily active users
- •Built with Kafka, DynamoDB, GraphQL, and Viem
Multichain Relay Infrastructure
Proof of Play
- •5M+ smart contract transactions/month across 12 EVM chains
- •99.95% uptime with automatic failover
- •Real-time cross-chain NFT marketplace mirroring
NFT Marketplace Backend
Nifty Gateway
- •$1.2B in revenue with 1.8M users and 99.9% uptime
- •Custom ERC721 contracts handling 30K concurrent users
- •Microservices supporting 38M NFTs with 15s data sync
High-Frequency Trading Systems
Belvedere Trading
- •Incident response for $100M+ digital asset trading desk
- •Full-stack observability platform with centralized metrics
- •99.99% system uptime for institutional Bitcoin Options
Stablecoin Marketplace API
Proof of Play
- •$2M+ monthly volume for in-game asset trading
- •Treasury yield generation with 35% reduced payment fees
- •Integrated financial systems for gaming economy
Serverless Web3 Migration
Nifty Gateway
- •45% infrastructure cost reduction ($80K to $44K/year)
- •Sub-1s cold-start latency optimization
- •Scaled secure APIs for NFT trading platform
Client Testimonials
Working with Alex on our NFT marketplace was a game-changer. He architected systems that handled $1.2B in transactions with 99.9% uptime. His technical depth and collaborative approach made him invaluable to our team.
Michael Torres
Head of Product • Gemini / Nifty Gateway
Get In Touch
Let's discuss your next blockchain or backend project