Senior Software Engineer & Instructor
Salim Reza Joy
What I Do
About Me
Salim Reza Joy
Senior Software Engineer & Instructor
A results-driven Senior Software Engineer with 10+ years of experience architecting and delivering scalable web applications, enterprise SaaS platforms, and intelligent systems. Currently engineering full-stack solutions at digiground.com.au while shaping the next generation of developers as Lead Instructor at Ostad.app.
As CEO & Founder of Sleekfusions LTD, I bring an entrepreneurial mindset to every project — blending technical depth with product thinking. From building real-time dashboards and e-commerce platforms to deploying ML pipelines, I thrive on turning complex problems into elegant, production-ready solutions.
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Years Experience
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Projects Delivered
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Happy Clients
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GitHub Repos
Core Expertise
Career Path
Experience
Senior Software Engineer
digiground.com.au
Develop and maintain full-stack web applications using React.js/Next.js for dynamic UIs, Node.js and Python for backend services, and manage cloud deployments and server configurations.
- Contributing to the development of a new SaaS platform
- Web scraping and data analysis for SaaS projects
- Managed cloud deployments and server configurations
- Increased project efficiency by 30%
Lead Instructor - React & Next.js
Ostad.app
Teaching advanced React and Next.js concepts to students in a virtual classroom setting.
- Developing curriculum for advanced React and Next.js courses
- Mentoring students on real-world projects
- Creating a supportive learning environment
CEO & Founder
Sleekfusions LTD
Established and managed international health and beauty e-commerce platforms.
- Directed marketing campaigns that increased brand awareness by 40%
- Maintained 95% customer satisfaction rate
- Expanded business operations to diverse markets
- Platforms include Sleekfusion.shop and Sleekphones.shop
Content Writer
Hashnode
Writing technical articles and blog posts about web development, React, Next.js, and modern technologies.
- Published articles on React, Next.js, and web development
- Building a personal brand through technical writing
- Sharing knowledge with the developer community
Freelance Web Developer
Fiverr & Upwork
Delivered custom web development solutions for diverse international clients.
- Built dynamic interfaces using React and Next.js
- Integrated various APIs for enhanced functionality
- Maintained 5-star rating across platforms
- Successfully completed 500+ projects
Web Developer
Duber.uk
Developed innovative features for a UK-based drone freelance platform.
- Developed two portals & landing page
- Implemented client-side hiring system
- Integrated mapbox with turf.js
Organizer
DIU IoT Club
Organized IoT workshops, hackathons, and tech events at Daffodil International University.
- Organized workshops on IoT and embedded systems
- Coordinated hackathons and coding competitions
- Mentored students in IoT projects
Education
My academic journey and achievements.
BSc in Computer Science & Engineering
Daffodil International University
- Honored with a Technical Scholarship for three semesters
- Actively participated in coding competitions and hackathons
- Member of DIU HIRL Lab (Health & Informatics Research)
- Organizer of DIU IoT Club
Higher Secondary Certificate (HSC)
Savar Cantonment Public School and College
- Science Group
- Participated in various academic competitions
- Active member of the Science Club
Secondary School Certificate (SSC)
Sristy Central School and College
- Achieved perfect GPA
- Class representative
- Active participation in extracurricular activities
Featured Projects
A selection of projects I've built — from full-stack web apps to IoT systems and e-commerce platforms.
Quran Web Application
A modern, responsive Quran web application with dynamic API integration, real-time verse tracking, and audio playback.
SRTravels
A modern travel & tourism website designed for travel agencies and tour operators. Tour booking and adventure tourism support.
SR Academy LMS
A feature-rich Learning Management System built to revolutionize online education. Course management and user authentication.
JoyNFT Marketplace
NFT marketplace for crypto collectibles and digital art transactions. NFT buying/selling with crypto payment integration.
Company Dashboard
Web-based dashboard application with role-based authentication. Admin and client dashboards with sales and operations management.
Transport System Dashboard
Advanced transport management system with real-time GPS tracking, ticket booking, GeoFence, and live bus tracking.
Smart Wallet
Digital wallet built with React Native. Secure transactions, user authentication, Stripe payment integration, and transaction history.
Amazon Clone
Full-fledged e-commerce website with Stripe payments, Google authentication, and complete e-commerce functionality.
IoT Smart Dustbin System
IoT-enabled smart line-following dustbin using ESP32 and AWS IoT. Real-time automation, monitoring, and sensor integration.
Casabella Windows Website
Responsive website for a Canadian windows and doors company. Enhanced aesthetics and functionality with custom CSS.
Tech Stack
Skills & Technologies
Technologies I work with to bring ideas to life.
Languages
9Frontend
10Backend
9Databases
8AI / ML
8DevOps
8Mobile
5Design
7IoT
5Testimonials
What Clients Say
Feedback from clients around the world.
Altaso
Germany
Was very nice to work with him. He implemented everything as I wanted it and the result speaks for itself.
Credentials
Certifications
Professional certifications and completed courses.
AWS Technical Essentials Course
Mobile Development in IoT Course
Common Etiquette of Life: A 30-Minute Lesson
Positivity: How to Build a Positive Mentality
Coursera: Full-Stack Web Development with React Specialization
Udemy: Complete React Developer (with Redux, Hooks, GraphQL)
Motion Design School: MAD VFX in After Effects
Udemy: ChatGPT Complete Guide - Learn Midjourney, ChatGPT 4 & More
WordPress Theme Development - RR Foundation Bangladesh
Udemy: JavaScript Algorithms and Data Structures Masterclass
Milestones
Achievements
Notable achievements and recognitions throughout my career.
Technical Scholarship
Honored with a Technical Scholarship for Academic Excellence for three semesters at Daffodil International University.
309 Problems on Codeforces (Before ChatGPT)
Solved 309 problems on Codeforces with a contest rating of 889 — all before the ChatGPT era.
View Profile200+ GitHub Repositories
Published 200+ repositories on GitHub covering various technologies and projects.
Q1 Journal Research Papers
Contributed to two research papers submitted to Q1 journals on federated learning and image classification & segmentation.
Basis National Award 2022
Selected for Basis National Award Preliminary Round 2022.
National IoT Workshop
Organized a national-level workshop on IoT, impacting over 200 participants.
Community
Affiliations
Organizations and communities I'm part of.
Nobopushpo Sports & Social Welfare Organization
Active member contributing to sports and social welfare initiatives in the community.
DIU HIRL Lab
Contributing to impactful studies in health informatics and research at Daffodil International University.
DIU IoT Club
Driving IoT education and outreach, organizing workshops, hackathons, and tech events.
GitHub Open Source
Contributing to open source projects, enhancing global developer resources and tools.
Let's Connect
Get in Touch
Have a project in mind or want to collaborate? I'd love to hear from you.