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Niloy D.

Narsingdi, Bangladesh

$33/hr
4.9
419 jobs

I am an ACM-ICPC World Finalist and software engineer. I have been developing backend and DevOps solutions using C++, Java, and Python since 2016. I have experience in multiple domains that include fintech, agrotech, health tech, IoT, and Saas. I have been working as a remote developer with globally distributed teams since 2019. I am a quick learner, good with communication, proactive and punctual human being. Nothing excites more me than a challenge that is necessary but difficult to solve. I am also a competitive programmer and expert in data structures and algorithms. I have a decent understanding of UNIX systems especially how different types of data structures are blended to solve complex problems of operating systems. I am a team player and can work as solo as well. I never compromise the quality of my work doesn't matter how the pressure is. And, I believe in requirement analysis as the most crucial part of engagement.

  • Linux
  • C++
  • Java
  • C
  • Kubernetes
  • Python
  • Docker
  • Git
  • Data Structures
  • Flask
  • Socket Programming
  • Multithreaded Programming
  • Django
  • Algorithm Development
  • Node.js
Zohaib Q.

Karachi, Pakistan

$25/hr
5.0
42 jobs

๐Ÿ’ฏ % JOB SUCCESS | ๐Ÿ”Š TOP RATED PLUS ๐Ÿ† Expert in Python, MATLAB, and C/C++/C# Development ๐Ÿ† Specialist in Software Development with FastAPI ๐Ÿ† Proficient in Data Structures and Algorithm Design ๐Ÿ† Proficient in Windows and Software Development using Microsoft Visual Studio, Visual Studio Code, Dev C++, and PyCharm ๐Ÿ’ผ Delivered 50+ High-Quality Software Solutions โฑ๏ธ Over 1800 Hours of Professional Development and Consultation Hello! Iโ€™m Zohaib Qazi, an experienced and dedicated developer with over 6 years of expertise in crafting robust and efficient software solutions. I specialize in designing scalable applications, developing APIs, and creating Windows-based software using industry-leading development tools. Key Areas of Expertise โœ”๏ธ Developing software using Python, MATLAB, and C/C++/C# โœ”๏ธ Building Windows applications with Microsoft Visual Studio โœ”๏ธ Developing, debugging, and testing software with Visual Studio Code, Dev C++, and PyCharm โœ”๏ธ Crafting efficient and scalable APIs with FastAPI โœ”๏ธ Designing and implementing optimized data structures and algorithms โœ”๏ธ Delivering bug-free, high-performance software solutions Why Choose Me? ๐ŸŸข I deliver rigorously tested and reliable solutions tailored to your needs. ๐ŸŸข My work process is characterized by professionalism and transparency. ๐ŸŸข I excel in creating scalable and maintainable software solutions. ๐ŸŸข Punctuality and attention to detail are central to my work ethic. ๐ŸŸข I provide ongoing support and maintain a collaborative approach. Letโ€™s collaborate to bring your vision to life with my proven expertise. Reach out today, and letโ€™s get started on your project!

  • Object-Oriented Programming
  • Python
  • Data Structures
  • C#
  • C++
  • MATLAB
  • FastAPI
  • Database
  • SQL
  • Python Script
  • SQL Programming
  • MATLAB Script
  • AWS Development
Mohamed E.

Al Mansurah, Egypt

$60/hr
5.0
8 jobs

๐Ÿ‘‹ Hi, Iโ€™m Mohamed โ€” a Top Rated๐Ÿ† Senior Software Engineer. ๐Ÿš€ I help companies design, build, and deliver high-performance software systems โ€” from computer vision and AI pipelines to real-time desktop applications and embedded platforms. ๐Ÿงฉ What I deliver: โœ… Industrial Computer Vision Systems ๐Ÿ”นIntegration with industrial cameras (Basler, Luxonis, FLIR / Point Grey) ๐Ÿ”นHigh-accuracy inspection, measurement, and defect detection ๐Ÿ”นOptimized OpenCV pipelines in C++ and Python ๐Ÿ”นHybrid pipelines combining deep learning with classical computer vision for robustness โœ… Deep Learning (ResNet, U-Net, YOLO, MediaPipe, ...) ๐Ÿ”นCustom dataset creation, labeling, and curation ๐Ÿ”นInference optimization for CPU, GPU, and edge devices ๐Ÿ”นYOLO for real-time object detection, segmentation, OBB, and pose estimation ๐Ÿ”นYOLO fine-tuning and transfer learning for domain-specific data ๐Ÿ”นMediaPipe for pose estimation, hand tracking, face landmarks, and motion analysis โœ… Real-Time & Performance-Critical Software ๐Ÿ”นLow-latency C++ systems optimized for speed and memory ๐Ÿ”นMultithreading, SIMD, profiling, and algorithmic optimization ๐Ÿ”นGPU acceleration (CUDA) when justified ๐Ÿ”นDesigned for long-running, production-grade operation under real-world constraints โœ… Embedded & Edge AI ๐Ÿ”นVision and AI deployment on Raspberry Pi ๐Ÿ”นSensor integration, control logic, and hardware-in-the-loop testing with ESP32, Arduino โœ… Full Project Ownership ๐Ÿ”นSystem architecture and technical leadership ๐Ÿ”นDesktop GUIs: Qt, MFC, OpenGL ๐Ÿ”นClean handover, documentation, and maintainable codebases ๐Ÿ‘‰ Let's discuss how I can bring your AI, computer vision, or embedded system project to life.

  • C++
  • Python
  • Qt Framework
  • Computer Vision
  • OpenCV
  • Deep Learning
  • PyTorch
  • Machine Learning
  • QML
  • YOLO
  • MATLAB
  • OpenGL
  • Microsoft Foundation Class Library
  • Raspberry Pi
  • ESP32
  • Robotics
ibrahim H.

Saruhanli, Turkey

$15/hr
5.0
11 jobs

Software developer with a strong foundation in data structures and algorithms, specializing in highโ€performance systems, optimization, and purposeโ€built engineering solutions. Programming Languages โ€ข C, C++, Go โ€ข Python, Lua, Bash Libraries โ€ข Pandas, NumPy, ezdxf Clientโ€side โ€ข HTML, CSS, JS, TS โ€ข HTMX โ€ข React, Next.js โ€ข Hugo, Astro Serverโ€side โ€ข Node.js, Deno โ€ข Django, FastAPI Databases โ€ข PostgreSQL โ€ข MySQL, MariaDB โ€ข SQLite โ€ข MongoDB โ€ข Redis, DynamoDB Infrastructure โ€ข Linux โ€ข Docker, Podman โ€ข Cloudflare Tools โ€ข Git (GitHub, GitLab) โ€ข Neovim Documentation โ€ข Markdown โ€ข reStructuredText โ€ข LaTeX โ€ข Typst Productivity โ€ข Microsoft Office โ€ข Microsoft Power BI Computerโ€Aided Design โ€ข AutoCAD โ€ข SOLIDWORKS โ€ข Siemens NX

  • Data Structures
  • Algorithms
  • Web Development
  • Front-End Development
  • Back-End Development
  • Full-Stack Development
  • Web Design
  • Low-Level Programming
  • Bug Fix
  • Autodesk AutoCAD
  • SolidWorks
  • Siemens NX
  • Vim
  • Git
  • Golang
  • LaTeX
  • Bash
  • Script
  • Lua
  • Python
Maxim S.

Kiev, Ukraine

$45/hr
5.0
51 jobs

Algorithmic development (3D geometry, image processing, 15 years). C++ development (16 years of experience). Understanding user needs and improving given requirements. Consulting on algorithms.

  • C++
  • Algorithm Development
  • Mathematics
  • C
  • 3D Model
  • Requirement Analysis
  • CMake
  • Geometry
  • C#
  • Algorithms
  • Three.js
  • Python
  • JavaScript
  • Qt Framework
  • Image Processing
Ch Asad K.

Islamabad, Pakistan

$40/hr
5.0
7 jobs

I am a Senior Software Engineering Leader & AI/ML Expert with 15+ years of hands-on experience in software development, embedded systems, and artificial intelligence. My career spans building real-time defense systems, enterprise applications, and AI-powered solutions for industries ranging from UAV defense and embedded devices to computer vision and deep learning research. ๐Ÿ”น Core Expertise Artificial Intelligence & Machine Learning Deep Learning (CNNs, RNNs, LSTMs, Transformers) Computer Vision (Object Detection, Image Segmentation, OCR, Pose Estimation, Tracking) Generative AI (Stable Diffusion, GANs, CycleGAN, StyleGAN, 3D Reconstruction) Large Language Models (GPT, BERT, T5) LangChain, RAG (Retrieval Augmented Generation), AI Agents Data Science, Data Mining, and Time Series Forecasting Software Development Backend Development: .NET Core, ASP.NET MVC, Django, Flask, Node.js, NestJS Frontend Development: React, Next.js, Angular, TypeScript, JavaScript Cloud Platforms: Microsoft Azure, AWS (Lambda, EC2, S3, RDS, CloudFormation, Serverless Architectures) DevOps Tools: Git, Jenkins, Docker, Kubernetes, Atlassian JIRA, CI/CD pipelines Embedded Systems & Low-Level Programming Embedded C, C++, Assembly, RTOS Device Programming, Firmware Development, Hardware-Software Integration MATLAB for signal/image processing & simulations TCP/IP Networking & Protocol Development Databases & Tools SQL, Oracle, MySQL, Data Warehousing & ETL Version Control: Subversion (SVN), Git Other Strengths Object-Oriented Design & Multithreading Object-Oriented Modeling & UML Cross-Platform Development (Windows, Android, iOS) Mentorship & Engineering Leadership (managing 12+ engineers) ๐Ÿ”น What I Deliver End-to-End AI Solutions: From research to production (Computer Vision, LLMs, Generative AI). Enterprise Applications: Scalable, secure backend & frontend systems. Embedded & Real-Time Systems: Defense, UAV, IoT, and industrial-grade solutions. Cloud-Native & Serverless Backends: Migration, architecture, and deployment on AWS/Azure. Custom Development & Mentorship: Technical training, interview prep, and project guidance. With a blend of AI expertise, software engineering depth, and embedded systems background, I deliver solutions that are innovative, reliable, and production-readyโ€”tailored to meet diverse business needs.

  • C++
  • Java
  • Microsoft Visual C++
  • Android App Development
  • Software Testing
  • Embedded System
  • Agile Project Management
  • AI Bot
  • LLM Prompt
  • LangChain
  • Machine Learning
  • Deep Learning
  • Data Analytics
  • Computer Vision
  • Python
  • Scrum
  • Assembly Language

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What Is Object-Oriented Programming and Why Is It Important?

Youโ€™ve probably seen most back-end programming languages described as object-oriented programming (OOP)โ€”so what is object-orientation in web development, and why is it important?

At its core, itโ€™s a logicโ€”one we use in daily life. We naturally think of things as objects with attributes and behaviors, and that determines how we interact with them. Itโ€™s interacting in the abstract, and itโ€™s why OOP can boost speed and efficiency.

What is abstract interaction?

If you want to change the television channel from your seat, you use a remote control. That remote control is an object with a number of attributes and behaviors hidden inside of it. Without an understanding of those hidden attributesโ€”the microchips, wiring, etc.โ€”you still know and expect that pressing a button will perform that particular function. Youโ€™ve interacted with the remote control in the abstract, skipping the steps the remote was designed to carry out. Thatโ€™s the beauty of OOPโ€”the focus is on how the objects behave, not the code required to tell them how to behave.

So, what are objects?

A car is an example of a complex object, with many attributes. We donโ€™t need to understand all of its internal mechanics, what kind of engine it has, how the gas makes it run, or even where the gas came from in order to know how to interact with it. The carโ€™s behaviors have been made simple for us through object-oriented logic: put the key in the ignition, and the car turns on and gets us where we need to go. The attributes that make this possibleโ€”all of the carโ€™s parts, electronics, and engineeringโ€”are a โ€œpackageโ€ we donโ€™t need to break down in order to understand.

Apply this to software building, and it allows developers to break down big, complicated projects into compartmentalized objects, program them to have attributes and behaviors, then essentially set them aside and focus on programming how the objects interactโ€”a higher level of thinking that makes writing code less linear and more efficient. Modern, high-level languages like Python and Ruby are perfect examples of OOP. The fact that theyโ€™re able to be so streamlined gets right to the heart of OOP logic.

Object-oriented programming & back-end development

What is object-oriented programming in terms of how a site is built? OOP defines most modern server-side scripting languages, which are the languages back-end developers use to write software and database technology. This behind-the-scenes, server-side technology tells a website or web application how to behave, and also builds the architecture for a site to interact with its database. That scaffolding is how data is delivered and processed, effectively making it the brain of a website. And thatโ€™s where object-oriented logic comes into play.

If a websiteโ€™s brain uses object-oriented logic, itโ€™s designed to think of data as objects. It affects how a site is built from the ground up, how data is organized, how later growth and maintenance of the site will occur, and more.

Benefits of object-oriented technology include:

  • Ease of software design
  • Productivity
  • Easy testing, debugging, and maintenance
  • Itโ€™s reusable
  • More thorough data analysis, less development time, and more accurate coding, thanks to OOPโ€™s inheritance method
  • Data is safe and secure, with less data corruption, thanks to hiding and abstraction
  • Itโ€™s sharable (classes are reusable and can be distributed to other networks)

The building blocks of object-oriented programming

Objects are central to OOP, but theyโ€™re not the only moving part. Hereโ€™s a closer look at the other building blocks, and how they work in tandem to create back-end code that houses, moves, and manipulates data from a database into a usable web application.

  1. Objects: An object is the core unit of OOP. Objects are uniquely named and represent an instance of a class. Each object houses different states (attributes), and shared behaviors, called methods. For example, a Prius is an object in the class of โ€œcars,โ€ in a subclass of โ€œhybrid cars.โ€ Its attributes include anything from the number of doors it has to how its electric component is charged. Itโ€™s similar to other cars by its behaviorโ€”it drivesโ€”but its attributes are what set it apart.
  2. Classes: A class is a blueprint for how an object is built, as well as being a sort of โ€œparent categoryโ€ for objects. Using the previous example, a class dictates the concept of a carโ€”four wheels, an engine, a body, brakes, etc. It allows certain set criteria to be passed down to all objects in the class. All varieties of cars behave relatively the same on a basic level, but its their attributes and methods that make them unique.
  3. Inheritance: This is an important aspect of OOP, hinted at above. By deriving classes from parent classes, behaviors can be passed down to objects, then more complicated attributes can be added the deeper you go. For example, breaking a car into subclasses (car โ†’ sports car โ†’ V8 sports car) makes it possible to layer in more features without starting from scratch.
  4. Abstraction & Encapsulation: This describes how attributes are housed and hidden within an objectโ€”including its data. Objects are designed to only reveal the necessary data, allowing software to interact with the object on a higher level. Itโ€™s equal parts security and simplicity. In the case of car parts, by safely stowing them within the body of an assembled car, things are less likely to get broken, and users can interact with the big picture: pressing the gas means go, no questions asked.

Procedural languages vs. object-oriented languages

Procedural programming (via languages like ColdFusion) is code that is broken into โ€œproceduresโ€โ€”itโ€™s a different way of thinking about how code interacts with data thatโ€™s more linear. Procedures are functional bits of code that interact with and change data, like little machines that gather input, process it, then deliver output. With OOP, however, data and functions (attributes and methods) are bundled together within the object. This prevents the need for any shared or global data with OOP, which is a core difference between the two approaches.

Traditional procedural languages like C and Pascal require you to think in terms of the computer rather than thinking in terms of the problem youโ€™re trying to solve. For less complicated applications, procedural languages offer ease and transparency that bundled objects donโ€™t always allowโ€”something that can make it more difficult for programmers to analyze smaller bits of code on the tail-end of the development process.

When it comes to creating reusable components in software, OOP is the clear winner. Reusability leads to efficiency, simplifying programming and creating โ€œshortcutsโ€ to software design.

Popular object-oriented languages

  • Simula, the first object-oriented programming language
  • Java
  • Python
  • Ruby
  • C++
  • Smalltalk
  • Visual Basic .NET
  • Objective-C: OOP is a core tenet of iOS mobile app programming, and Objective-C is essentially the C language with an object-oriented layer.
  • Curl
  • Delphi
  • Eiffel