BigSam

samuelopeyemi.com

Full-stack engineering studio focusing on Web3 and Agentic AI systems with a growth-first mindset.

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BigSam (Samuel Opeyemi) - Senior Full-Stack & Web3 Engineer

Engineering high-performance digital systems, AI agents, and blockchain protocols with a Marketing-First mindset.

Core Philosophy

Engineering for Growth, Not Just Execution. I bridge the gap between complex code and user acquisition, ensuring every line of code serves the bottom line. I architect systems that drive measurable business results and scalable success.

Services & Expertise

Full-Stack App Engineering

End-to-end web apps and SaaS products, from pixel-perfect frontend to secure backend systems and production deployment.

Tech Stack: React, Next.js, Node.js, PostgreSQL, TypeScript.

Blockchain & Smart Contracts

Secure, scalable smart contracts, token mechanics, and Web3 integrations for DeFi, NFTs, and RWA tokenization.

Expertise: Solana (Rust/Anchor), EVM (Solidity), Ethers.js, Wagmi, LayerZero.
Track Record: 6 years of zero-exploit code delivery.

AI Agents & Automation Bots

Autonomous bots, LLM workflows, and AI copilots that handle repetitive operations and intelligent decision loops.

Tech Stack: Python, OpenAI, LangChain, RAG, Pinecone, Vercel AI.

Custom Software & APIs

High-performance internal tools, API platforms, and business software tailored to specific workflows and growth stages.

Mobile & Cross-Platform Apps

Fast, polished mobile experiences with strong architecture and maintainability.

Tech Stack: React Native, Expo, Firebase.

Launch, Scale & Optimization

Performance tuning, observability, growth instrumentation, and SEO to keep products reliable as they scale.

Key Projects & Impact

Crypto Wallet Dashboard: Minimal, futuristic fintech UI/UX for portfolio management with real-time growth charts.
AI Support Copilot: Agentic AI system reducing support overhead by 65% using custom RAG pipelines.
NFT Marketplace Core: High-volume minting engine.
SMS Gateway API: Real-time communication rail.
Autonomous Trading Bot: HFT arbitrage algorithms.
Technical Archive: Deep catalog of protocols and systems built over a 6-year engineering journey across Web3, AI, and SaaS.