techyowls.io
$ whoami
Software engineers who ship.
$ cat capabilities
Large-scale systems. Products. Technical leadership.
$ ls ./products
octa/ LIVE
$ ls ./tools
json base64 jwt regex cron colors FREE
$ status
Ready to build.
$
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Products

LIVE
FEATURED

SnapForge

Screenshot API + AI data extraction. Capture URLs as images or extract structured data with AI.

~50ms cached AI Extract Batch (50 URLs) Sync + Async
FREE 50 screenshots/day • From $7/mo for more
LIVE

Octa

The beautiful calculator for professionals. Natural language input, currency conversion, timezones, and more.

$150 + 20% $180.00
45 EUR to USD $48.65
time in Tokyo 2:30 AM
40+ Currencies 100+ Units Timezones Cross-platform
COMING SOON

More Products Coming

We're cooking something new. Join the waitlist to be the first to know.

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Blog

Tutorials that actually help

Practical guides with real-world examples. No fluff.

View all 193+ articles

AI Agents Mastery Series

NEW
Start from Part 1 →
Part 1
Build from Scratch
ReAct pattern, tools, memory
Part 2
LangGraph Deep Dive
State machines, routing
Part 3
Local LLMs (Ollama)
Zero cost, privacy-first
Part 4
Tool-Using Agents
Web, code, APIs
Part 5
Multi-Agent Systems
CrewAI, collaboration
Part 6
Production Deploy
LangSmith, security
Python JavaScript DevOps Spring Boot
System Design 7 min

API Design Part 5: Caching Strategies

Master multi-layer caching architecture, HTTP cache headers, ETags, and cache invalidation patterns. Build fast, scalable APIs with proper caching.

#api #caching #performance
System Design 9 min

API Design Part 6: GraphQL & gRPC

Master modern API protocols beyond REST. Learn when to use GraphQL for flexible queries, gRPC for high-performance microservices, and how to implement both in production.

#api #graphql #grpc
System Design 9 min

API Design Part 1: HTTP & REST Fundamentals

Master HTTP methods, status codes, and REST maturity model. The foundation every API developer needs - from GET/POST basics to idempotency and proper status code selection.

#api #system-design #rest
System Design 10 min

API Design Part 7: Resilience & Observability

Master circuit breakers, retry patterns, and the three pillars of observability. Build fault-tolerant APIs with proper metrics, logging, and distributed tracing.

#api #resilience #circuit-breaker
System Design 9 min

API Design Part 2: Security & Authentication

Master API security layers, JWT implementation, OAuth 2.0 flows with PKCE. Production-grade patterns for authentication and authorization in modern APIs.

#api #security #jwt
System Design 4 min

API Design Mastery: Complete 8-Part Series

Master API design from HTTP fundamentals to production systems. 8-part comprehensive guide covering REST, security, caching, GraphQL, gRPC, resilience, and interview preparation.

#api #system-design #rest

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Services

Let's build together

14 years of hands-on experience across the full stack. From architecture reviews to full product builds.

Architecture Review

Deep dive into your codebase. Identify bottlenecks, security issues, and scalability concerns. Get a clear action plan.

From $500 / review
  • Codebase audit
  • Security assessment
  • Written report + call
Get started
Popular

Technical Leadership

Fractional CTO for startups. Technical direction, team mentoring, architecture decisions, and code reviews.

From $5k / month
  • Weekly strategy calls
  • Code review & mentoring
  • Architecture guidance
  • Slack/async support
Schedule a call

Custom Development

End-to-end product development. From idea to shipped product. Web apps, APIs, desktop apps, and more.

Let's talk
  • Full-stack development
  • API design & integration
  • DevOps & deployment
Discuss your project

Technologies I work with

Python JavaScript TypeScript Rust Java React Node.js Spring Boot Docker Kubernetes AWS PostgreSQL