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Issa Kobayashi

Senior Full Stack Developer

Toronto, ONRemote60 CAD / hour

About

Senior Full-Stack × Blockchain × AI Engineer

Building production end-to-end systems fusing AI + Blockchain + Modern Web into scalable, reliable products.

I design, own, and ship full architectures - solo or with teams.

🔧 Tech Stacks

Backend & Systems

• Python: FastAPI (primary), Django, Flask

• Node.js/TS: NestJS, Express

• Go (Golang) - concurrency & performance

• DBs: PostgreSQL, Redis, Supabase, Firebase, MongoDB

• Arch: Async APIs, workers (Celery, BullMQ, RQ), event-driven (Kafka, RabbitMQ, NATS)

Frontend

• React, Next.js (App Router + Server Components)

• Data/State: TanStack Query, SWR, Zustand, real-time (WebSockets, Socket.io)

• Tight backend + on-chain UI integration

Blockchain / Web3

• Contracts: EVM (Solidity), Sui (Move), Solana (Rust basics)

• Systems: staking, prediction markets, tokenomics, DeFi primitives

• Off-chain: indexers (The Graph, custom), relayers, API bridges

• Wallets (WalletConnect, injected), gas opt, security focus

AI / LLM / ML

• RAG pipelines + vector DBs (Pinecone, PGVector, Weaviate, Qdrant)

• ML: PyTorch, TensorFlow, scikit-learn, Hugging Face

• Voice/Multimodal: TTS (ElevenLabs, OpenAI, Google), STT (Whisper, AssemblyAI, Deepgram), voice agents, real-time audio

• Agents, workflows, eval, tracing, cost opt

• Deep production AI integration

Infra & DevOps

• Docker, K8s basics, CI/CD (GitHub Actions, GitLab, CircleCI)

• Clouds: AWS (EC2, Lambda, RDS, S3), GCP, Azure, Vercel, Render, Fly.io

• Observability: ELK/Datadog logs, Prometheus/Grafana metrics, OpenTelemetry tracing

Specialize in AI-powered dApps, voice agents, high-throughput DeFi - systems that actually ship and scale.

Always open to serious projects, collabs, or tech chats.

Skills

Web3Power BiReactREST APIDeep LearningNatural Language ProcessingData Visualization

Languages

EnglishJapanese

Starting from

$60CAD / hour

Key Information

Work mode

Remote

Mission Duration

No preference

Location

Toronto, ON

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