Field Manual // First Edition

Open to DevOps/SRE roles & OSS collaboration

MD. YUNUS

$ whoamiSRE who builds observable, self-healing cloud platforms

The story of an electronics student who fell in love with infrastructure. Framework-level code merged into Cloudflare andDocker. Oracle ACE Associate. I make platforms observable, incidents short, and deploys boring.

OPEN THE BOOK ->DOWNLOAD RESUME VIEW GITHUB

TABLE OF CONTENTS:
01 ORIGINS · 02 OPEN SOURCE · 03 WORK · 04 BUILDS ·
05 TOOLBELT · 06 FIELD NOTES · 07 CONTACT

9+
PRs merged into Cloudflare & Docker: 281
automated tests shipped to production: 45%
MTTR reduction via AI incident agent: 12+
OCI reference architectures published

01Origins

// from circuits to clusters

Motivated B.Tech (Electronics & Communication) graduate (expected 2027) with proven open-source contributions at Cloudflare and Docker, Oracle ACE Associate, and hands-on experience in DevOps, MLOps, and cloud infrastructure. I've delivered framework-level fixes, reduced MTTR by 45% via an AI-driven incident-root-cause agent, and shipped 281 automated tests across production systems. Passionate about building reliable, observable, and secure platforms at scale.

My journey began in electronics and communication engineering, but I've gravitated toward cloud-native technologies through self-directed learning and hands-on contributions. What drives me is the challenge of building systems that are not just functional, but resilient, observable, and secure by design—especially in distributed, high-scale environments.

// CHANGELOGFILE: origins.md

[v0.1]ECE foundation initialized — B.Tech Electronics & Communication.
[v0.4]First containers and CI pipelines shipped — DevOps internship (2024).
[v0.7]ML infrastructure at scale — 2.5M+ record forecasting pipelines at Shell (2025).
[v0.9]The open source arc — framework PRs merged at Cloudflare & Docker (2026).
[v1.0]Oracle ACE Associate — reference architectures running in the community (2026).

KubernetesDockerTerraformOCIAWSPrometheusGoPythonTypeScriptCI/CD

02The Open Source Arc

// cloudflare/vinext · docker/agent — 9 merged PRs

I didn't learn open source from a course. I learned it by reading framework internals and shipping fixes that other developers now build on.

PR #258cloudflare/vinext

03Chapters of Work

// from campus to cloud platforms

2026
Cloudflare & Docker Inc. (Open Source Contributor) — Core Framework Contributor
Remote
- ->Exported `ServerInsertedHTMLContext` to unblock CSS-in-JS SSR for Apollo Client, styled-components, and Emotion users, adding 5 integration tests and 238 lines of clean code (PR #151)
- ->Authored documentation that eliminated `Cannot find module` errors for ESM validator packages across RSC and SSR environments, adding a test fixture and 24 integration-test lines (PR #193)
- ->Fixed `Dynamic require of .mjs is not supported` on Node 22 by integrating `ensureESModule`/`renameCJSConfigs` in the CLI, adding 9 unit tests and maintaining 169 passing tests (PR #197)
- ->Wired `RouterContext.Provider` in the Pages Router, fixing `useRouter()` returning null and providing a single source-of-truth router value (PR #249)
- ->Extracted shared request-handling utilities into `request-pipeline.ts`, removing 1,627 duplicated lines, fixing 6 CodeQL security issues, and adding 37 unit tests (PR #258)
- ->Added snapshot tests for entry template generators, raising coverage from 0% to ~100% for those modules (PR #345)
- ->Prevented `useActionState` from becoming undefined after `redirect()` by adding explicit navigation handling and an E2E test (PR #620)
- ->Docker Agent: Implemented proactive token compaction at 90% capacity and auto-recovery for overflow errors across 14 LLM provider patterns, adding 33 integration tests (PR #1973)
- ->Docker Agent: Corrected table-text copy mismatches by implementing a visual-to-rune mapping algorithm, improving developer UX (PR #2175)
Jan 2026 – Present● CURRENT
Oracle Corporation — Oracle ACE Associate
Remote
- ->Published 12+ OCI reference architectures covering secure VCN topologies, IAM design patterns, and DevOps practices, adopted by the Oracle community
- ->Produced comparative analyses of managed vs. self-managed cloud services (OKE vs. Kubernetes, managed databases vs. self-hosted)
- ->Earned four OCI certifications: Architect Associate, DevOps Professional, Developer Professional, and Foundations
- ->Actively mentors peers in the Oracle ACE community and shares cloud-native best practices via technical blogs and talks
Oct 2025 – Nov 2025
Shell India Market Private Limited — ML Infrastructure Intern
Remote
- ->Engineered forecasting pipelines processing 2.5M+ aviation records using Prophet (MAE < 5%) and automated anomaly detection with Isolation Forest
- ->Containerized FastAPI inference services with Docker and automated deployments via GitHub Actions, cutting operational overhead
- ->Achieved 100% test pass rate for the end-to-end ML system
Jun 2024 – Jul 2024
Stellanova GlobalTech Pvt. Ltd. — DevOps Intern
Remote
- ->Containerized five micro-services using Docker and optimized Jenkins & GitHub Actions pipelines, reducing deployment times by 30% and increasing CI/CD throughput
- ->Implemented zero-trust connectivity patterns using Tailscale, Ngrok, and SSH tunneling, eliminating direct server exposure

04Builds

// problem -> fix -> measurable impact

incident-root-cause-investigator-pro.sh

Incident Root-Cause Investigator Pro

PythonCoral MCPFastAPIDockerGitHub Actions

problem -> During incidents, engineers burn critical minutes manually correlating logs, metrics, and traces across disconnected tools while users stay impacted.

built -> Architected an enterprise AI agent orchestrating multi-source telemetry via a Coral MCP query layer. ML models analyze logs, metrics, and traces to surface actionable insights during incident response.

45% faster MTTD (simulated)
281 automated tests
failure-injection coverage

[ VIEW ON GITHUB->]

production-observability-platform.sh

Production Observability Platform

JavaSpring BootPrometheusGrafanaGitHub Actions

problem -> Services shipping without instrumentation mean failures get reported by users instead of alerts — the most expensive way to find out.

built -> Built a 4-stage CI/CD pipeline (build, test, security scan, deploy) and instrumented a Spring Boot service with Prometheus metrics and Grafana dashboards, with automated synthetic testing and alert routing.

4-stage CI/CD pipeline
real-time dashboards
multi-channel alerting

[ VIEW ON GITHUB->]

cloudflare-vinext-contributions.sh

Cloudflare Vinext Contributions

TypeScriptReactNext.jsNode.js

problem -> SSR gaps in a production framework blocked CSS-in-JS users (Apollo, styled-components, Emotion), and duplicated request-handling code hid security issues.

built -> Shipped framework-level fixes across SSR context, routing, module resolution, and test coverage — merged into a framework used in production at the edge.

7 PRs merged
1,627 duplicate lines removed
6 CodeQL issues fixed
0% → 100% module coverage

$ git log --merged[expand]

PR #151: Exported `ServerInsertedHTMLContext` to unblock CSS-in-JS SSR for Apollo Client, styled-components, and Emotion users
PR #193: Documented ESM resolution for validator packages
PR #197: Fixed Dynamic require of .mjs on Node 22
PR #249: Wired `RouterContext.Provider` in Pages Router fixing `useRouter()` returning null
PR #258: Extracted shared request-handling utilities, removing 1,627 duplicated lines and fixing 6 CodeQL security issues
PR #345: Added snapshot tests for entry template generators (0% → 100% coverage)
PR #620: Prevented `useActionState` from becoming undefined after `redirect()`

[ VIEW ON GITHUB->]

docker-agent-contributions.sh

Docker Agent Contributions

GoprotobufgRPC

problem -> LLM context-window overflows crashed agent sessions mid-task, and table text copied from the TUI came out garbled.

built -> Implemented proactive token compaction at 90% capacity with auto-recovery across LLM providers, and a visual-to-rune mapping algorithm for accurate text selection.

14 LLM provider patterns handled
33 integration tests
zero-crash overflow recovery

$ git log --merged[expand]

PR #1973: Implemented proactive token compaction at 90% capacity and auto-recovery for overflow errors across 14 LLM provider patterns
PR #2175: Corrected table-text copy mismatches by implementing visual-to-rune mapping algorithm

[ VIEW ON GITHUB->]

05The Toolbelt

// engineered precision for the modern cloud landscape

[ 05.1 Cloud & Infrastructure ]

Cloud Platforms: Oracle Cloud Infrastructure (OCI)Amazon Web Services (AWS)Google Cloud Platform (GCP)
Infrastructure as Code: TerraformGitOps (ArgoCD/Flux)AWS CloudFormation
Networking: OCI VCNAWS VPCZero-Trust Architecture (Tailscale, SSH tunneling)

[ 05.2 Containerization & Orchestration ]

Containerization: DockerOCI containers
Orchestration: Kubernetes (OKE/EKS/GKE)HelmKustomize

[ 05.3 CI/CD & Automation ]

CI/CD Platforms: GitHub ActionsJenkinsGitLab CI
Automation: BashPythonGo scripting
Pipeline Stages: Buildtestsecurity scandeployrollback

[ 05.4 Observability & Monitoring ]

Metrics: PrometheusGrafanaAlertmanager
Logging: ELK StackLokiFluentd
Tracing: JaegerTempoOpenTelemetry
APM: Custom instrumentationhealth checks

[ 05.5 Programming Languages ]

Primary: PythonJavaGoTypeScript/JavaScript
Scripting: BashPowerShell
Query: SQLPromQLLogQL

[ 05.6 DevOps Practices ]

Infrastructure: Immutable infrastructureblue/green deploymentscanary releases
Reliability: Chaos engineeringfault tolerancecircuit breakers
Security: Secrets managementimage scanningpolicy as code (OPA)
Testing: UnitintegrationsnapshotE2Eperformancechaos testing

▣ Certifications_Shelf

Oracle · 2026

Oracle Cloud Infrastructure Architect Associate

Oracle · 2026

Oracle Cloud Infrastructure DevOps Professional

Oracle · 2026

Oracle Cloud Infrastructure Developer Professional

Oracle · 2026

Oracle Cloud Infrastructure Foundations

Oracle · Jan 2026 - Present

Oracle ACE Associate

McKinsey & Company · 2026

McKinsey Forward Program Graduate

06Signal to Noise

Md Yunus

READ ->

Sep 2025

System Design Deep Dive: How to Build a URL Shortener That Won’t Crash at Scale

Md Yunus

READ ->

07Write the Next Chapter

// ~/chapters/07_contact.sh

"Every good story needs collaborators."

MD. YUNUS

01Origins

02The Open Source Arc

Extract shared request-handling utilities into request-pipeline.ts

Export ServerInsertedHTMLContext to unblock CSS-in-JS SSR

Proactive token compaction at 90% capacity + overflow auto-recovery

Wire RouterContext.Provider in Pages Router — fix useRouter() null

Snapshot tests for entry template generators

Prevent useActionState becoming undefined after redirect()

Fix Dynamic require of .mjs on Node 22

Visual-to-rune mapping algorithm for accurate table-text copy

Document ESM resolution for validator packages

03Chapters of Work

Cloudflare & Docker Inc. (Open Source Contributor) — Core Framework Contributor

Oracle Corporation — Oracle ACE Associate

Shell India Market Private Limited — ML Infrastructure Intern

Stellanova GlobalTech Pvt. Ltd. — DevOps Intern

04Builds

Incident Root-Cause Investigator Pro

Production Observability Platform

Cloudflare Vinext Contributions

Docker Agent Contributions

05The Toolbelt

▣ Certifications_Shelf

06Signal to Noise

Building a Netflix-Style IaC Platform on OCI: Resource Manager Stacks as Product APIs

Zero-Downtime Migration to Oracle Autonomous Database

How I Fixed Vite’s “Dynamic require of .mjs is not supported” Error in Cloudflare’s vinext

How I Fixed Apollo Client SSR in Cloudflare’s vinext by Wiring a Missing React Context

Building a Lightweight, Scalable Database Stack with Oracle Container Engine

How I Fixed ESM Resolution in Cloudflare’s vinext

When to NOT Use Kafka on OCI: A Cost and Complexity Analysis for Event Streaming Architecture

The Cold Start Problem Nobody Talks About (It’s Not Just Serverless)

Beyond NetworkPolicies: Infrastructure-Native Microsegmentation with Oracle Kubernetes Engine

Designing a 1 Million RPS Kubernetes Ingress Layer: From TCP Handshake to Kernel Tuning

Control Plane High Availability on OKE: What Oracle Actually Manages (And Why It Matters)

Scaling The Software Architecture: Beyond Linear Growth to Phase Transitions

Multi-Tenancy in Kubernetes: Soft vs. Hard Isolation

Observability Economics: Cost vs. Fidelity in Distributed Tracing

Securing the Software Supply Chain: Beyond CVE Scanning to Cryptographic Verification

The Split-Brain Dilemma: Architecting Consistency in Distributed Cloud Systems

The Day the Internet Stopped: Inside the AWS Outage of October 20, 2025

The Micro-Startup Stack: Engineering Velocity Without the Overhead

System Design Deep Dive: How to Build a URL Shortener That Won’t Crash at Scale

07Write the Next Chapter

Secure_Channels