EximusEdu is an all-in-one multipurpose educational institution management software. It's a large-scale ERP SaaS software comprising of 25+ modules, meeting all the academic, financial and administrative needs of educational institutions.Aimed towards high productivity of institute admins and easy tracking of academic progress of students, EximusEdu provides an extremely easy-to-use, feature-rich, and complete solution for anything academic for guardians, students, teachers, and administrative staff alike.• Developing features and maintaining the product, from frontend UI/UX to backend services, and maintaining infrastructure and monitoring.• Releasing multiple times per day using CI/CD to swiftly handle client requirements/issues, resulting in delightful customer experience and receiving satisfactory reviews from clients.• Leading a development team of 4 members.• Scaled application to handle 500+ concurrent users participating in a 5-minute quiz contest with automated winner determination at the end of quiz.• Optimized MySQL queries to improve execution time from a few seconds to only a few hundred milliseconds.• Performing code reviews to ensure high-quality clean code.• Using static code analyzers like PHPStan/LaraStan and PHPMD to minimize bugs in code even before it's been commited.• Writing automated tests to minimize manual regression tests, thereby reducing testing time, delivery time and post-deployment issues.• Led efforts to vastly reduce technical debt in systems, resulting in the reduction of system maintenance time by 70%.Tech Stack: PHP, Laravel, jQuery, Vue.js, MySQL, Android/Kotlin, Docker, CI/CD (CircleCI), AWS (Elastic Beanstack, EC2, RDS, SES, Lambda)

MailerLite offers digital marketing tools to grow business audience faster and drive revenue smarter. It offers email marketing, email automations, WYSIWYG email and landing page with blog builders, as well as email verification tools to ensure successful delivery of emails into subscribers' inboxes.• Developed product features and enhancements, from frontend UI/UX to backend services, and maintained infrastructure and monitoring.• Optimized backend processes and PostgreSQL queries to improve automation execution time, resulting in 20% fewer parallel automation processing worker nodes during peek times.• Integrated OpenAI ChatGPT prompts API to generate catchy marketing email subject lines, boosting end-user signups through the emails for more than 30%.• Implemented A/B split-testing of popup forms, enabling content marketers choose the right version of a popup design in a couple of days instead of waiting for weeks.• Migrated activity logs from Postgres-based Spatie ActivityLog to ClickHouse, thereby reducing Postgres DB load as well as making sure of efficient storage of logs in ClickHouse.• Collaborated with iOS team to develop and implement iOS push notifications, thereby increased positive reviews of the iOS app by ~20%.• Critically analyzed, reproduced and fixed a critical bug in landing page builders that had been occurring randomly for quite a long time without anybody being able to reproduce and fix it.• Performed code reviews to ensure high-quality clean code.Tech Stack: PHP, Laravel, Laravel Nova, Laravel Horizon, Vue.js, PostgreSQL, Redis, Elasticsearch, CI/CD (Github Actions)

Bangladesh e-Government ERP Project was a pilot project for establishing a transparent and accountable e-Government system across whole of the Bangladesh Government. It was an ERP solution comprising of the modules HR, Accounts, Inventory, Assets, Procurement, Project Management, Training Management and Meeting and Event Management.• Provided Software Development consultation services to the Government of Bangladesh.• Regularly monitored architecture, design and development quality and progress.• Worked with development team members to brainstorm solutions, prepare mockups, design workflows, solve technical and coding challenges, and review code.• Received Letter of Appreciation from the Director for outstanding performance.Tech Stack: Spring Boot Microservices, Angular JS, PostgreSQL.

Took lab on Application Development course at the department of Computer Science & Engineering.

Took labs on Application Development and Software Engineering courses at the department of Computer Science & Engineering.Primary focus was to make students aware of and get hands-on experience on industry-standard best practices in developing small- and large-scale software systems.

Backpack, a Y Combinator-backed Silicon Valley startup, is a peer-to-peer marketplace that connects shoppers and travelers to empower consumers to buy overseas products. Shoppers get access to foreign products by paying travelers coming to their country a fee to purchase and deliver the items. Backpack currently operates primarily in the USA-Bangladesh route and is working on to expanding to other countries as well.• Designed and developed features for the Backpack web application used by shoppers.• Developed the Backpack mobile application for both iOS and Android platforms using React Native.• Scaled the application to reach 1M+ users.• Designed and developed logistic tools used by internal teams such as support agents, delivery agents, and traveler-communicators.• Developed back-office logistic support tools that improved eCommerce item delivery efficiency by ~30%.Tech Stack: Node.js, React, React Native, PHP, MySQL, Docker, CI/CD (CircleCI)

Young Labels Ltd. is a leading garments labels and packaging supplier in Bangladesh. When they decided to develop a customized ERP solution for the company, I was hired as the technical consultant.• Selected a capable Software Firm to assign the development project.• Oversaw the development making sure the functional requirements were developed as required.• Resolved disputes on whether some features were feasible to automate and finalizing their costs if so.Tech Stack: ASP .NET MVC, PHP, MySQL

Therap Services is a web-based service organization that provides an integrated solution for documentation, reporting and communication needs of agencies providing support to people with developmental disabilities. Therap operates primarily in the USA and is currently expanding to other countries as well.• Analyzed and solved complex and critical technical and performance issues related to the Therap application deployed in Oracle WebLogic Application Server.• Designed and developed features for the Therap application.• Researched tools and technologies with the objective of determining their usefulness in software development and adding those to the development technology stack if deemed useful.• Scaled the application to serve 100K+ users handling 5M+ patients.• Regularly took interviews for hiring Software, SQA and DB Engineers.• Trained 100+ Trainee Software Engineers.• Developed the Therap for Android app, which is being used by 100K+ users, and got a 5-star review on the Play Store.Tech Stack: Java EE, Spring, Hibernate, Android/Java, iOS/Swift

Profile: https://www.upwork.com/freelancers/~01c043070eb65dd9b0• Worked on various contractual Software Development tasks, ranging from simple PHP and Java applications, up to complex Android apps and data extraction / scraping tasks.• With 19 jobs and 280 hours worked, never got less than full 5-star rating.• Had been a Top Talent badged freelancer.• Earned $4000+ in total.Some of the amazing client feedbacks:• "Sharafat Ibn Mollah Mosharraf is an unbelievably amazing programmer. Great communication and always finishes projects early! Definitely going to rehire."• "Superb quality work, very responsive, and incredibly time conscious. Will definitely hire in the future. Job well done!"• "Excellent working skills and communication. I will certainly use again, thank you."• "Sharafat was a great developer. He had a very good understanding of Rest API and swing. He was able to complete this job in a very timely fashion. We have worked with many developers and he was a real pleasure to work with. We will be working with him again very soon!"