Programming Languages
Languages I have worked with:
- C
- C++
- Java
- SQL
- JavaScript
- HTML/CSS
Open to opportunities
Software Engineer · C++ · Systems Programming
Mohd Nasir
Building reliable software at its core.
Software Engineer at Tally Solutions with 2+ years of experience building C++ components, working on memory management, concurrency and performance optimisation.
LeetCode problems solved
See source: LeetCode profile(opens in a new tab)- See source: LeetCode profile(opens in a new tab)
Contest rating
1,770
- Highest
- 1,989
- Contests
- 46
- Top
- 9.8%
Custom C++ memory manager
90%
faster than the system allocator in a measured benchmark
See source: About the memory manager
About
Working on the coreof software systems.
- C++
- Memory management
- Multithreading
I'm a Software Engineer at Tally Solutions with 2+ years of experience in C++. Most of my work involves building core software components, working with multiple threads, managing memory and improving performance.
At work, I've built a custom memory manager, worked on a reader-writer locking mechanism for shared data and improved core data types using faster comparison techniques. I enjoy understanding how things work behind the scenes and finding ways to make software faster and more reliable.
Outside work, I enjoy competitive programming and solving challenging problems. I've solved more than 1,700 problems on LeetCode and reached a highest contest rating of 1989.
My approach to engineering:
01
Understand the problem first
I like to measure performance and find the real problem before making changes.
02
Use memory wisely
I focus on how memory is allocated, used and managed.
03
Build reusable components
I prefer building small, well-organised components that can be reused across different parts of a system.
Experience
My professional journey.
Software Engineer @ Tally Solutions
September 2024 – Present · Bengaluru, India
I work on core C++ components and help make software faster, more reliable and more efficient.
My contributions:
- Built a reader-writer locking mechanism for shared data. It allows multiple threads to read data at the same time, while only one thread can modify it. This approach was later reused in other components.
- Worked on root container management and version finalization to improve the reliability of versioned data.
- Built a custom memory manager in C++ that was 90% faster than the system allocator in the measured benchmark. It uses block-based metadata and atomic operations to manage memory safely across multiple threads.
- Designed and added a stack-based variable data type to the core data types layer. I also completed the planned milestones on time.
- Made comparison operations faster across different data types using branchless logic and a common interface.
- Added compound assignment operations to the execution engine. I also contributed to reviewing the design and CPU performance of startup-flow gates and paused-queue interfaces.
- Built logging and tracing systems to monitor application behaviour and make debugging easier.
- C++
- Concurrency
- Atomics
- Memory Management
- Performance Optimization
Web Development Intern @ BharatRide
January 2023 – March 2023 · Dehradun, India
Worked on website development and made improvements to website performance.
My contributions:
- Built responsive web pages using HTML, CSS and JavaScript.
- Worked with the team to add new website features.
- Fixed bugs and improved page loading speed.
- Made changes to improve the overall user experience.
- HTML
- CSS
- JavaScript
Technical skills
Technologies and tools I work with.
I mainly focus on programming, computer science fundamentals and building efficient software.
Core Computer Science
Topics I have studied and worked with:
- Data Structures & Algorithms
- Object-Oriented Programming
- Operating Systems
- Memory Management
- Multithreading
- System Design
- Database Management Systems (DBMS)
Software Engineering
Areas I have worked on:
- Concurrency & Synchronization
- Reader-Writer Locks
- Atomic Operations
- Performance Optimization
- Logging & Tracing
- Low-Level Programming
- Debugging
Tools & Platforms
Tools and platforms I use:
- Git
- GitHub
- VS Code
- Eclipse
- MySQL
- MongoDB
- Windows
- macOS
Featured projects
Projects I've worked on.
Here are some projects I've worked on, from low-level C++ development to full-stack applications. Open a project to see what it does, how it works and which technologies I used.
Some of my work at Tally Solutions is part of internal company projects. Because of this, their source code and detailed implementation are not publicly available.
- C++
- Atomics
- Memory Management
- Performance Optimization
- C++
- Concurrency
- Reader-Writer Locks
- C++
- Object-Oriented Programming
- Data Structures
- C++
- Data Structures
- Performance Optimization
- Node.js
- MongoDB
- Mongoose
- React
- HTML
- CSS
- JavaScript
- PHP
- MySQL
- HTML
- CSS
- JavaScript
- Java
- MySQL
- SMTP
Engineering Lab
Don't just read about it. Try it yourself.
Explore 6 interactive experiments covering 34 algorithms. Change the inputs, go through each step and understand why the algorithm makes each decision.
- Page ReplacementCompare FIFO, LRU and Optimal.3 algorithms
- CPU SchedulingExplore 7 CPU scheduling algorithms.7 algorithms
- Memory AllocationCompare First Fit, Best Fit and Worst Fit.3 algorithms
- Sorting AlgorithmsTry Bubble, Selection, Insertion, Merge, Quick, Heap, Counting, Radix and Shell sort.9 algorithms
- Searching AlgorithmsTry Linear, Binary, Jump and Interpolation search.4 algorithms
- Graph AlgorithmsExplore BFS, DFS, Dijkstra, Bellman-Ford, Floyd-Warshall, Prim's, Kruskal's and Topological Sort.8 algorithms
Writing
Notes on how things work.
Short explanations of ideas I enjoy, written in plain language. Most of them go with an experiment in the Engineering Lab, so you can read the idea and then try it.
- 8 November 2026 · 1 min readWhen more memory causes more page faultsWith FIFO page replacement, giving a program more frames can sometimes make it fault more, not less. Here's a small example you can run yourself.Read post
- 8 November 2026 · 1 min readFirst fit, best fit and worst fit: what actually changesThe same request can land in three different places depending on the strategy. A small example shows what each one picks and what it leaves behind.Read post
- 8 November 2026 · 1 min readSame result, different work: comparing sorting algorithmsEvery sorting algorithm gives the same sorted list. What changes is how much work it does to get there, and that is what the step-by-step view makes visible.Read post
Competitive programming
I enjoy solving challenging problems.
I regularly practise data structures and algorithms to improve my problem-solving skills. Competitive programming has helped me think through difficult problems, find better solutions and write more efficient code.
1,700+
LeetCode Problems Solved
Solved problems across Easy, Medium and Hard levels. I have also practised additional problems on GeeksforGeeks and Coding Ninjas.
1989
Highest Contest Rating
Reached a peak rating of 1989 in LeetCode Biweekly Contest 120 after taking part in 46 contests.
Knight
LeetCode Badge
Earned the Knight badge, placing me among the top 5% of contest participants.
Top 100 Finalist
Infosys HackWithInfy 2024
Reached the top 100 finalists in the HackWithInfy competition.
AIR 3
Coding Ninjas Competition
Secured All India Rank 3 in the Coding Ninjas coding competition.
Winner
GEU-ACM Software Development Hackathon
Was part of the winning team in the Software Development Hackathon. Also secured 4th place in the college-level Crack-C competition.
Education
My education.
Bachelor of Technology in Computer Science
Graphic Era Deemed to be University
September 2020 – June 2024 · Dehradun, Uttarakhand
CGPA
9.10/10
Saraswati Vidya Mandir
Class 12 – PCM
2018 – 2020 · U.P. Board · Afzalgarh, Uttar Pradesh
Percentage
83.40%
Saraswati Vidya Mandir
Class 10
2016 – 2018 · U.P. Board · Afzalgarh, Uttar Pradesh
Percentage
84.83%
Contact
Let's connect.
I'm always happy to connect with people who are interested in software development, C++, system programming and solving interesting technical problems.
If you have a job opportunity or simply want to talk about technology, feel free to get in touch.
Open to opportunities
Ways to get in touch
Prefer a terminal? Try a command
nasir@systems: ~
$ whoami. mohd-nasir: software engineer @ tally solutions. $ cat focus.txt. c/c++ · systems · memory · performance · dsa. $ ./status --availability. ● open to opportunities