Md Shijan Ali
Frontend Engineer | Vue.js Expert | React.js Expert | Open
Ready for work
Md Shijan is ready for their next project!
Another project, another valuable client relationship.
Recently, I received some great feedback from a client after working together on a complex e-commerce project.
Throughout the project, we handled evolving requirements, payment gateway approval challenges, implementation changes, and continuous feedback.
What I’m most proud of is that despite the challenges and extended timeline, the client was happy with the development, communication, and overall collaboration.
Their final feedback:
“I’ve been really happy with both your work and the development throughout the whole project.”
And even better:
“I’d definitely love to work with you guys again for my next project.”
For me, this is what successful client work looks like — not just delivering code, but building trust and a relationship that can continue into future projects.
Looking forward to the next one.
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Singly Linked List Practice — JavaScript
Today I practiced implementing a Singly Linked List from scratch using JavaScript.
After understanding the core structure, I challenged myself to implement additional operations rather than simply following an existing implementation.
Implemented Operations
prepend(value)
append(value)
find(value)
delete(value)
insertBefore(currentValue, newValue)
insertAfter(currentValue, newValue)
deleteAt(index)
toArray()
Complexity Analysis
prepend() → Time: O(1) | Space: O(1)
append() → Time: O(n) | Space: O(1)
find() → Time: O(n) | Space: O(1)
insertBefore() → Time: O(n) | Space: O(1)
insertAfter() → Time: O(n) | Space: O(1)
delete() → Time: O(n) | Space: O(1)
deleteAt() → Time: O(n) | Space: O(1)
Key Learning
The most important part of this exercise was understanding how node references and next pointers control the structure of a Linked List.
For example, inserting a node doesn't require shifting existing elements like an Array. Instead, we update the relevant references:
Before:
10 → 20 → 40
After inserting 30:
10 → 20 → 30 → 40
This was a great exercise for strengthening my understanding of data structures, traversal, references, and algorithmic thinking.
Next challenge: Reverse a Singly Linked List from scratch.
#JavaScript #DSA #DataStructures #Algorithms #Programming #Learning
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3 reasons your React app feels slow (and how I fix them)
Most "slow React app" complaints come down to 3 things:
1. 𝐔𝐧𝐧𝐞𝐜𝐞𝐬𝐬𝐚𝐫𝐲 𝐫𝐞-𝐫𝐞𝐧𝐝𝐞𝐫𝐬
Components re-rendering when their props/state haven't actually
changed. Fix: React.memo, useMemo, useCallback — but only where it
actually matters, not everywhere.
2. 𝐁𝐮𝐧𝐝𝐥𝐞 𝐬𝐢𝐳𝐞 𝐛𝐥𝐨𝐚𝐭
Importing entire libraries for one function. Fix: tree-shaking,
dynamic imports, and checking your bundle with tools like
webpack-bundle-analyzer.
3. 𝐁𝐚𝐝 𝐝𝐚𝐭𝐚 𝐟𝐞𝐭𝐜𝐡𝐢𝐧𝐠 𝐩𝐚𝐭𝐭𝐞𝐫𝐧𝐬
Fetching data on every render, or waterfalling requests instead of
running them in parallel. Fix: React Query/SWR for caching,
Promise.all for parallel requests.
I've fixed these exact issues on ecommerce and admin dashboard
projects — sometimes cutting load time by 30-40% with just these
three changes.
What's the most common performance issue you've run into?
#webdevelopment #reactjs #nextjs #frontenddevelopment
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Built a comprehensive School Management System designed to simplify and centralize daily academic and administrative operations. The platform provides a modern, responsive interface for managing students, teachers, classes, attendance, exams, results, fees, and other essential school activities from a single system.
The system focuses on reducing manual work, improving data organization, and giving administrators and staff a clear overview of school operations.
Key features include:
=> Student & teacher management
=> Class & subject management
=> Attendance tracking
=> Exam & result management
=> Fee & payment management
=> Admin dashboard & reports
=> Role-based access control
=> Responsive design for desktop, tablet & mobile
I focused on creating a scalable architecture, intuitive user experience, and reliable workflows that can support the day-to-day operations of a modern educational institution.
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