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Achievement: Pull Sharkx3Achievement: QuickdrawAchievement: YOLO

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selimaytac/README.md

Hi, I'm Selim 👋

DevOps & Platform Engineer based in Istanbul. I design, automate and operate platforms for critical workloads, where reliability, security and cost all matter.

What I do

  • Container platforms in the cloud and on-prem, mostly for real-time, high-volume services
  • Automation for provisioning, configuration and releases, across clustered, multi-datacenter server environments
  • Monitoring and logging, including pipelines that handle billions of logs
  • Incident response, with reviews that look for the cause, not just the fix
  • Migrations of infrastructure, services and data, planned to keep downtime low
  • Security and compliance baselines, built together with development teams

A few years of experience across several domains, mostly fintech. I'm interested in distributed systems, blockchain and on-chain infrastructure, and observability for AI agents and the systems around them. I write about what I learn, on resilience, logging and cloud.

🔨 Open source & projects

hashspan: OpenTelemetry instrumentation for viem, the Coinbase CDP SDK, x402 and MPP. It traces the transactions and payments that AI agents and services send, keyed by tx hash. 🌐 hashspan.dev · 📦 npm
↳ hashspan-lab: runs agent scenarios on a local chain with a telemetry stack and Grafana dashboards. One command, no key needed.

awesome-agent-observability: a neutral list of resources for observing AI agents, with an OpenTelemetry focus. It covers standards, instrumentation, platforms, evaluation, cost, safety signals, and on-chain agents and payments. 🌐 Website

benchmarks: developer tools measured side by side, with the scripts to run each test yourself. So far it covers vector search and LLM trace size.

claude-code-kit: small, measured Claude Code add-ons (status line, hooks, skills and agents), also packaged as a plugin marketplace.

kafka-financial-event-platform: an enterprise-style stock-exchange event platform on Kubernetes, built from scratch with every decision recorded. 📖 Read the docs

✍️ Latest posts

➡️ All posts on Substack

🧩 Recent open source

8 pull requests (2 merged) · 26 issues reported, 14 fixed upstream · 18 projects

Contribution Status
mlflow/mlflow · Preserve the OTLP span kind in Span.from_otel_proto, to_dict, from_dict… Merged
x402-foundation/x402 · fix(batch-settlement): settle claims made by refunds or a prior process PR open
vercel/ai · docs: link hashspan from the observability integrations PR open
coinbase/agentkit · fix: read ERC-20 token details on chains without multicall3 PR open
wevm/prool · chore: remove unused tar dependency PR open
magsther/awesome-opentelemetry · Add hashspan to GenAI / LLM Instrumentation Merged

➡️ All PRs and issues

📫 Find me

LinkedIn · X · Substack · Medium

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  1. hashspan hashspan Public

    OpenTelemetry instrumentation for viem, the Coinbase CDP SDK, x402 and MPP: trace the transactions and payments your AI agents and services send, keyed by tx hash.

    TypeScript 6

  2. hashspan-lab hashspan-lab Public

    Run AI-agent scenarios on a local chain with hashspan, a local telemetry stack and Grafana dashboards: one command, no key.

    TypeScript

  3. awesome-agent-observability awesome-agent-observability Public

    A neutral list of resources for observing AI agents: standards, instrumentation, platforms, evaluation, cost, safety signals, and on-chain agents and payments, with an OpenTelemetry focus.

    JavaScript 3 1

  4. kafka-financial-event-platform kafka-financial-event-platform Public

    A hands-on learning project: designing an enterprise-style stock-exchange event platform on Kubernetes from scratch (Kafka/Strimzi, deterministic matching engine, GitOps, governance, HA/DR), with e…

    HCL

  5. claude-code-kit claude-code-kit Public

    Small, measured Claude Code add-ons: status line, hooks, skills and agents. Also a plugin marketplace.

    Shell 1

  6. benchmarks benchmarks Public

    Developer tools measured side by side, with the scripts to run it yourself.

    Python 1