@pmsrent

Sergey

@pmsrent

Software engineer building automation tools for short‑term rental operations

Zurich, SwitzerlandJoined June 2026

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Sergey's blogs

Scalable Systems Engineeringscalable-architecture.hashnode.dev18 posts

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Recently published

SSergeyscalable-architecture.hashnode.dev2d ago · 2 min read

Building a Scalable Rate‑Limiting Layer for SaaS Integrations

Modern SaaS platforms often integrate with multiple external APIs — payment providers, booking channels, messaging services, analytics tools, and more. Each of these services enforces its own rate lim

SSergeyscalable-architecture.hashnode.dev2d ago · 2 min read

How to Build a High‑Performance Webhook Processing Pipeline

Modern SaaS platforms rely heavily on webhooks. External services send booking updates, payment confirmations, calendar changes, or pricing events — and your system must process them quickly, safely,

SSergeyscalable-architecture.hashnode.dev2d ago · 2 min read

Designing a Fault‑Tolerant Queue System for Modern SaaS Platforms

As SaaS platforms scale, background processing becomes one of the most critical parts of the architecture. A queue system must not only handle high throughput but also remain stable during failures, t

SSergeyscalable-architecture.hashnode.dev2d ago · 2 min read

Why Event‑Driven Architecture Is Essential for Modern SaaS Platforms

As SaaS platforms grow, they must handle more integrations, more data, and more real‑time operations. Traditional request‑response systems struggle under this complexity. Event‑driven architecture sol

SSergeyscalable-architecture.hashnode.dev5d ago · 2 min read

Designing a Scalable Secrets Management System for SaaS Platforms

As SaaS platforms grow, they accumulate a large number of sensitive credentials: API keys, OAuth tokens, database passwords, encryption keys, webhook secrets, and integration credentials for each tena

Sergey

About

Available for

Sergey's blogs

Recently published

Building a Scalable Rate‑Limiting Layer for SaaS Integrations

How to Build a High‑Performance Webhook Processing Pipeline

Designing a Fault‑Tolerant Queue System for Modern SaaS Platforms

Why Event‑Driven Architecture Is Essential for Modern SaaS Platforms

Designing a Scalable Secrets Management System for SaaS Platforms

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Sergey

About

Available for

Sergey's blogs

Recently published

Building a Scalable Rate‑Limiting Layer for SaaS Integrations

How to Build a High‑Performance Webhook Processing Pipeline

Designing a Fault‑Tolerant Queue System for Modern SaaS Platforms

Why Event‑Driven Architecture Is Essential for Modern SaaS Platforms

Designing a Scalable Secrets Management System for SaaS Platforms