Ayobami Adejumo

@aayostem

The engineering team is shipping fast. The product is working. You've got real customers.

Joined April 2026

About

Ayobami Adejumo is a Senior Platform Engineer specialising in infrastructure transformation for seed and Series A companies. He has worked across ExxonMobil and multiple B2B SaaS teams

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Ayobami Adejumo's blogs

freeCodeCamp Englishfreecodecamp.org/news5 posts

Aayostem Production Engineeringaayostem.hashnode.dev4 posts

Articles Comments

Recently published

AAAyobami Adejumofreecodecamp.org1d ago · 24 min read

The EKS Cost Optimization Handbook: Reduce Your AWS Bill by 60% Using Karpenter and Rightsizing

This handbook is a complete guide to the 7-step playbook that took one EKS bill from $85,000/month to $34,000/month — without touching a single line of product code. I've audited EKS clusters at mor

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AAAyobami Adejumofreecodecamp.orgJun 15 · 21 min read

The 2026 FinOps Roadmap: From Cost-Blind Engineer to Cloud Financial Manager

My first AWS bill was $23,000. I had been working at the company for three weeks. Nobody told me. The bill just grew quietly in the background while I was proud of the feature I shipped. A Lambda func

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AAAyobami Adejumofreecodecamp.orgJun 2 · 22 min read

The AWS FinOps Guide for Series A Startups: The 8 Cost Patterns That Appear After Product-Market Fit

You raised your Series A. Engineering hired fast. Features shipped faster. And somewhere between month six and month twelve, someone forwarded you an AWS Cost Explorer screenshot with a line that only

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AAAyobami Adejumofreecodecamp.orgMay 28 · 22 min read

GDPR Article 32 for Software Engineers: Technical Controls, Implementations, and Auditor Questions

When I first read GDPR Article 32, I made a mistake. I thought it was a legal document. But it's not. It's an infrastructure specification. The regulation says you need "appropriate technical measures

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AAAyobami Adejumofreecodecamp.orgMay 5 · 40 min read

The Complete SOC 2 Type II Implementation Handbook for Engineers: A Month-by-Month Roadmap with Real Commands

If your team is preparing for a SOC 2 Type II review, this handbook is for you. It's a self-contained guide to the exact 90-day timeline, 14 critical controls, and evidence collection infrastructure t

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Ayobami Adejumo

About

Available for

Ayobami Adejumo's blogs

Recently published

The EKS Cost Optimization Handbook: Reduce Your AWS Bill by 60% Using Karpenter and Rightsizing

The 2026 FinOps Roadmap: From Cost-Blind Engineer to Cloud Financial Manager

The AWS FinOps Guide for Series A Startups: The 8 Cost Patterns That Appear After Product-Market Fit

GDPR Article 32 for Software Engineers: Technical Controls, Implementations, and Auditor Questions

The Complete SOC 2 Type II Implementation Handbook for Engineers: A Month-by-Month Roadmap with Real Commands

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Ayobami Adejumo

About

Available for

Ayobami Adejumo's blogs

Recently published

The EKS Cost Optimization Handbook: Reduce Your AWS Bill by 60% Using Karpenter and Rightsizing

The 2026 FinOps Roadmap: From Cost-Blind Engineer to Cloud Financial Manager

The AWS FinOps Guide for Series A Startups: The 8 Cost Patterns That Appear After Product-Market Fit

GDPR Article 32 for Software Engineers: Technical Controls, Implementations, and Auditor Questions

The Complete SOC 2 Type II Implementation Handbook for Engineers: A Month-by-Month Roadmap with Real Commands