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English
$
USD
I will solve data structures and algorithms projects in java, python, or js
Ali Usman
5.0
5.0
About this gig
Struggling with complex Data Structures and Algorithms (DSA)? Whether you are a student preparing for coding interviews or a professional needing optimized backend logic, I provide high-performance solutions in Python, Java, and JavaScript.
I specialize in converting abstract logic into efficient, clean code. Every solution I deliver includes a detailed breakdown of Time and Space Complexity (Big O Notation) to ensure your project is scalable and industry-standard.
Technical Expertise
- Data Structures: Linked Lists, Graphs (BFS/DFS), Binary Search Trees (BST), Heaps, and Hash Tables.
- Algorithm Design: Dynamic Programming (DP), Greedy Algorithms, Backtracking, and Sorting/Searching.
- Graph Specialist: Solving complex shortest path problems, network flow, and topological sorting.
- Interview Prep: Expertise in LeetCode, HackerRank, and Codeforces style challenges.
️ My Development Workflow
- Requirement Analysis: Deep dive into the problem constraints.
- Logic Drafting: Designing the most efficient algorithmic approach.
- Clean Implementation: Writing modular code in Java, Python, or JavaScript.
- Optimization: Refactoring for maximum efficiency.
Get to know Ali Usman
Ali Usman
Software Engineer
- FromPakistan
- Member sinceJan 2023
- Last delivery2 years
Languages
English, Hindi, Urdu
Expert web scraping and data crawling specialist with 2+ years of experience extracting data from any website.Proficient in Python (BeautifulSoup, Selenium, Scrapy, Playwright) and Node.js.I handle dynamic JavaScript pages,bypass anti-bot protections, solve CAPTCHAs, and deliver clean, structured data in CSV, Excel, JSON, or Google Sheets with 100 percent accuracy.I have working with software house and global users, delivering clean, user-friendly, and performance-optimized websites.My experience also includes API development, database integration and deploying applications using modern tools.
My Portfolio
FAQ
Which programming languages do you specialize in?
I am an expert in Python, Java, and JavaScript. Whether you need a backend script in Python, a robust Object-Oriented (OOP) system in Java, or complex logic in JavaScript, I ensure the code is clean, optimized, and follows industry best practices.
Can you help me understand the time and space complexity of the code?
Absolutely! Every solution I provide includes a detailed Big O Notation analysis. I explain the Time Complexity and Memory Usage of the algorithm to ensure you understand why a specific Data Structure (like a Hash Map or a Heap) was chosen for efficiency.
Is this gig suitable for coding interview preparation?
Yes! If you are a student or professional preparing for technical interviews at top tech companies, I can provide step-by-step explanations for LeetCode, HackerRank, and Data Structure problems to help you master the problem-solving patterns required to succeed.
Reviews
2 reviews for this Gig
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- Recommend to a friend
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R rawan99aljabri
Oman
Exlent good jop
$50
Price
4 days
Duration
Helpful?T tahirjutt39
United Kingdom
I recently worked with @harrial on a project, and I'm thrilled with the results. The quality of work, communication, and timeliness were all top-notch. Highly recommended!
$50
Price
1 day
Duration
Helpful?
Reviews
2 reviews for this Gig
| (2) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
Most relevant
R rawan99aljabri
Oman
Exlent good jop
$50
Price
4 days
Duration
Helpful?T tahirjutt39
United Kingdom
I recently worked with @harrial on a project, and I'm thrilled with the results. The quality of work, communication, and timeliness were all top-notch. Highly recommended!
$50
Price
1 day
Duration
Helpful?
