Author - 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