01
ProblemSmaller callBase case
Course development
Grokking the Art of Recursion for Coding Interviews
Recursive problem solving, call stacks, complexity analysis and interview exercises.
View live courseTHE WRITERBRICKS PORTFOLIO / EST. 2022
WriterBricks.
Knowledge,
engineered.
Technical writing, course development and editorial work. I’m Muhammad Husnain, WriterBricks co-founder, engineer and technical writer.
My portfolio here brings together work for DesignGurus, DelftStack, Oxylabs and other technology clients, including my Top Rated freelance work through Upwork.
Hundredsof technical articles produced,
edited or reviewed
edited or reviewed
Top RatedUpwork freelance work
01
WRITERBRICKS / FREELANCE DELIVERY
Top Rated. Built on the work.
Technical writing and software expertise, applied to client problems through Upwork.
Top Rated freelancer
My Upwork writing work forms part of this WriterBricks portfolio: developer tutorials, software documentation, code examples, source verification and technical editing.
I bring an engineering background to the writing, checking implementation details as well as the explanation. Projects span programming, web scraping, data tooling and AI.
Discuss a writing project02
WRITERBRICKS / DESIGNGURUS
Complete courses. Clear learning paths.
Course content co-author and ghostwriter for DesignGurus, working with Arslan Ahmad from June 2023. Content, code, exercises and visual learning resources across four courses.
Published under the DesignGurus brand without a public author byline. Current publisher editions may include later updates by other contributors.
02
DataStructureOperations
Course development
Grokking Data Structures & Algorithms for Coding Interviews
Data-structure foundations, implementations and problem-solving for technical interviews.
View live course03
ThreadsSynchroniseShared state
Curriculum development
Grokking Multithreading and Concurrency for Coding Interviews
A multi-language syllabus spanning threads, synchronisation, parallel algorithms and graded coding problems.
View live course04
ProblemPatternDesign
Course resources & delivery
Grokking Design Patterns for Engineers and Managers
Design-pattern explanations, Markdown lessons, editable draw.io diagrams and SVG illustrations.
View live course03
WRITERBRICKS / DELFTSTACK
Developer ideas. Explained in code.
Full author archiveLinux & Bash
How to Check Exit Code in Bash
A practical tutorial on checking whether shell commands succeeded and using exit status in scripts.
C / Programming
How to Print Binary of Number in C
Explaining binary representation through a concrete programming task.
C++ / Fundamentals
Operator Precedence and Associativity in C++
Making expression evaluation and operator behaviour easier to reason about.
04
WRITERBRICKS / OXYLABS & OTHER CLIENTS
From extraction to explanation.
Specialist content grounded in working tools and verifiable sources.
Scraping & proxy infrastructure
Python, Node.js, Java and Scala; Scrapy, Selenium, Playwright, Puppeteer, Cheerio, Nodriver and Crawl4AI. Authentication, rotation, geotargeting, headers and structured exports. Client work includes Oxylabs.
AI tools & developer education
AI-assisted scraping, ChatGPT, DeepSeek and Claude, alongside Linux, C/C++, C#, MySQL and web engineering.
Documentation & review
Software manuals, API documentation, code testing, source verification and developmental editing. Public bylines vary by client.
THE WRITERBRICKS STANDARD
Clear enough to follow. Correct enough to trust.
Verify the substance
Test code, trace claims to primary sources and identify assumptions.
Respect the reader
Explain terms, remove filler and keep the path to the answer direct.
Make feedback useful
Separate correctness from style and give specific, actionable edits.