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Autor - Andrew Saiak

Hi there,

I'm a software engineer specializing in blockchain systems, backend architecture, and infrastructure automation.
My work focuses on building secure, scalable, and event-driven applications for modern distributed environments.

Professional Summary

I have deep experience in designing and implementing multi-service architectures that integrate cryptography, blockchain logic, and cloud-native infrastructure.
My goal is to create systems that are resilient, observable, and verifiably secure — from key management to transaction execution.

I work across the full stack — from protocol-level integrations to user-facing applications — with a strong emphasis on security, performance, and developer experience.

Core Competencies

Backend Engineering

  • Node.js / TypeScript (NestJS, Express, Fastify)
  • PostgreSQL, Redis, and message brokers (RabbitMQ, Kafka)
  • Modular monorepo architectures (NX, Lerna)
  • Data validation, schema evolution, and API design

Blockchain & Cryptography

  • EVM and Solana ecosystem development
  • HD wallet derivation
  • Transaction orchestration and broadcast systems
  • MPC / TSS, threshold-ECDSA / EdDSA, HSM integration
  • Secure signing workflows and non-custodial key handling

Infrastructure & DevOps

  • Docker, Kubernetes, Helm, and Terraform
  • CI/CD pipelines with GitHub Actions and self-hosted runners
  • Environment automation, secret management, and observability
  • Prometheus, Grafana, Loki, and distributed tracing setups

Frontend & Client Integration

  • React / Next.js with TypeScript
  • Secure client-side cryptography (WebCrypto, WebAuthn)
  • PWAs and Chrome extensions
  • IndexedDB-based encrypted storage

LinkedIn