André Cirillo

@andreecirillo

Architect 44

São Paulo, BrazilJoined October 2025

About

Systems Architect. Software Engineer. Full Stack Developer. Architect of Chaos, mastering cloud, legacy, and light.

Available for

Freelance working, techinical writing, speaking at conferences.

André Cirillo's blogs

Code Opsandreecirillo.hashnode.dev4 posts

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andreecirillo.hashnode.dev

Challeges - JSON Processing - C#

⚙️ The Parsing Challenge Receive a JSON containing names and scores as strings. Clean the data and return only valid users (score between 0 and 100). [ {"name": " Alice ", "score": "295"}, {"na

3d ago6 min read

andreecirillo.hashnode.dev

Codility - OddOccurencesInArray - JavaScript

🧩 OddOccurrencesInArray – Explained Line by Line The OddOccurrencesInArray problem asks to find the value that occurs an odd number of times in an array. Each element in the array appears exactly twice, except for one unpaired element. Example:A = [...

Oct 14, 20252 min read

andreecirillo.hashnode.dev

Codility - CyclicRotation - JavaScript

🌀 Cyclic Rotation – Explained Line by Line The CyclicRotation problem asks to rotate an array to the right K times. Each rotation moves the last element to the front. Example:A = [3, 8, 9, 7, 6], K = 3 → Result: [9, 7, 6, 3, 8] Here's the code: func...

Oct 14, 20252 min read

andreecirillo.hashnode.dev

Codility - BinaryGap - JavaScript

🧠 Binary Gap – Explained Line by Line The Binary Gap problem asks to find the longest sequence of zeros surrounded by ones in the binary representation of a given positive integer N. Example:N = 529 → Binary: 1000010001 → Gaps: 0000, 000 → Longest =...

Oct 12, 20252 min read

André Cirillo

About

Available for

André Cirillo's blogs

Recently published

Challeges - JSON Processing - C#

Codility - OddOccurencesInArray - JavaScript

Codility - CyclicRotation - JavaScript

Codility - BinaryGap - JavaScript

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André Cirillo

About

Available for

André Cirillo's blogs

Recently published

Challeges - JSON Processing - C#

Codility - OddOccurencesInArray - JavaScript

Codility - CyclicRotation - JavaScript

Codility - BinaryGap - JavaScript