Ahtasham Abbas
Verified Expert in Engineering
Full-stack Software Developer
Lahore, Punjab, Pakistan
Toptal member since May 10, 2022
Ahtasham is a result-oriented, quality-driven, full-stack software engineer who excels with large‐scale enterprise‐level applications. He has delivered solutions for the fintech, blockchain, eCommerce, and custom CRM domains and is proficient in all stages of application development. The bulk of Ahtasham's experience has been with startups. He designed and developed the architecture of multi-tenant SaaS applications for startups using AWS cloud and Web3. Ahtasham has also led teams and projects.
Portfolio
Experience
- JavaScript - 7 years
- React - 7 years
- Full-stack - 7 years
- Node.js - 5 years
- Next.js - 5 years
- Serverless - 3 years
- NestJS - 3 years
- Generative Artificial Intelligence (GenAI) - 2 years
Availability
Preferred Environment
JavaScript, React, Node.js, TypeScript, Amazon Web Services (AWS), Serverless Architecture, Next.js, OpenAI, Web Applications, Django, REST APIs, API Integration
The most amazing...
...thing I've developed is a multi-tenant SaaS product admired for its robust and scalable architecture by the AWS team.
Work Experience
Full-stack Principal Software Engineer
NorthBay Solutions (an AWS Premier Partner)
- Led the revamping architecture activity, set up the monorepo structure, and migrated existing code into the new architecture.
- Gathered requirements, performed architectural analysis, and implemented reusable components while integrating Storybook with the monorepo for seamless collaboration.
- Collaborated with the USA-Argentina‑Pakistan cross‑functional agile team to develop 18 products built upon a single-page application (SPA).
- Created a RAG UI that supports real-time updates and includes mechanisms to keep browser memory consumption within optimal limits.
- Designed a connectivity architecture that minimizes latency and improves the performance of user interactions.
- Migrated the application from React 16.9 to React 18 and resolved compatibility issues, reducing the application rendering by 32% and boosting performance.
- Migrated test cases from Enzyme to React Testing Library and increased test coverage from 58% to 73% by expanding the test suite.
- Increased productivity by 40% by improving existing features and performance and devising new operational processes.
- Played a motivational role as a team lead by removing obstacles that affected delivery to move the team into a fast-paced environment.
- Conducted performance A/B testing to identify and resolve issues, optimizing code and reducing unnecessary API calls to enhance user flow efficiency.
Software Engineer
ArgonTech
- Assisted in building some of the company's crucial projects that deliver next-gen technology services to global customers.
- Collaborated with several teams during my tenure, where I helped develop, launch, and grow the project to support thousands of users.
- Served as an individual contributor on projects and helped build some core modules, including authentication, payment gateways, CI/CD, infrastructure monitoring, SDKs, reporting APIs, CRM, geocoding, and a CLI-based EFK stack.
- Designed and developed the architecture of the massively multiplayer AAA game (MMOG) with low communication latency for a fast gaming experience.
- Increased customer satisfaction from 75% to 90% by regularly reviewing customer feedback to suggest new customer service processes.
- Managed the team and helped them with planning and architecture design.
- Led the team and liaised with all departments, stakeholders, and customers to ensure no communication gaps in the requirements and delivery of features.
Full-stack Developer
DigitalSoft
- Contributed to the core project called ”digital manager” and built the multi-company solution, including accounts and inventory.
- Guided my team, streamlined requirements, and updated the manager about the project.
- Analyzed and modified the system, including testing and debugging.
Software Engineer
RTM Ltd
- Delivered solutions in the business management and ERP domains.
- Built a custom business management solution with modules including accounts, quotations, inventory, an access control list, and task tracking.
- Improved the internal reporting by contributing to the team management portal.
Experience
Ask Cyborg
https://askcyborg.com/• Built a comprehensive data processing pipeline, covering ETL and incorporating retrieval augmented generation (RAG) functionality.
• Utilized Express, Next.js, and MongoDB for vector similarity search.
• Led architectural design, set coding standards, and reduced critical bugs by 30%, enhancing system reliability for 500,000+ users.
• Designed and implemented a dynamic code generation system using ChatGPT, integrated with a bespoke mini-compiler for efficient execution.
• Built a PDF financial report generation module with Puppeteer, incorporating custom styling and dynamic data rendering.
• Integrated Redis for async operations to reduce server load and automated the process to generate and send reports via email.
• Implemented Stripe payment for secure transactions, enhancing user experience and revenue.
• Established a CI/CD pipeline on AWS Elastic Beanstalk and GitHub workflows for front-end deployment and integrated logging and monitoring using PM2 to address system issues.
Intelligize
https://www.intelligize.com/products/intelligize/• Innovated an internal tool to improve the QC and reduce the manual effort up to 68%.
• Fostered configurable drag and drop graphical and tabular widgets on the home screen.
• Optimized the document view performance by 45% by fixing memory leakage that previously extended user time and affected user experience.
• Revamped the custom context menu.
• Integrated the new tab for the risk factor (RF) matrix by implementing orchestration.
• Worked on a complex RF matrix grid with over six types of cells while maintaining performance.
• Maintained the performance factor while working on restoring the RF matrix saved tabs.
• Designed the architecture and implemented the dynamic filter panel according to the consumer application using dependency injection, improving performance by 60%.
• Contributed to print, download, email, and Excel sales automation.
Simplytokenized
https://simplytokenized.com/• Set up the Domain Driven Development, Test Driven Development, and atomic design patterns
• Authenticated and authorized the user with AWS Amplify
• Developed the re-useable components for custom theme
• Integrated permissions to perform certain operations assigned to specific roles
• Generated dynamic forms per tenant for compliance and contract processes
• Implemented the complete KYC process
• Integrated the multiple themes per tenant
• Increased engagement up to 55% by localizing the application in German and English.
• Wrote, maintained, and verified test cases
• Configured the CI/CD with AWS Amplify
Data Lake Accelerator
• Established the project's baseline and integrated the domain-driven architecture for the project's scalability.
• Increased customer satisfaction by 39% by combining the application's components with an atomic design pattern.
• Transpiled the Figma design into reusable components.
• Shipped the alpha release in the record time of 1.5 months and assisted with a request for six back-end resources.
• Improved the application rendering speed by virtualizing the large UI dataset.
• Deployed the monolithic application embedded inside a Django project on Elastic Beanstalk.
• Worked on the AWS API gateway (Infrastructure as a Code) to expose the back-end endpoint.
Medicore
https://apps.apple.com/th/app/medicore-find-best-doctors/id1583460732• Designed and architected the entire back end using Django and PostgreSQL, integrating secure APIs for smooth and encrypted communication between server and client.
• Engineered secure booking and scheduling features for doctor appointments, pharmacies, and hospital visits, ensuring that user data, including health records and personal information, was encrypted and fully compliant with HIPAA regulations using custom encryption methods and AWS KMS.
• Developed an admin panel in React with strict Access Control Layers (ACL) to ensure role-based access to sensitive data, enhancing the platform’s security.
• Implemented end-to-end encryption protocols to protect data during transmission and at rest, adhering to HIPAA guidelines, and utilized AWS services like IAM and S3 for secure infrastructure management.
• Provided key technical guidance on compliance and security best practices, contributing to the overall success and scalability of the application.
Education
Bachelor's Degree in Software Engineering
Government College University, Faisalabad - Faisalabad, Pakistan
Certifications
AWS Partner: Generative AI Essentials (Business)
Amazon Web Services (AWS)
AWS Technical Professional
Amazon Web Services
AWS Cloud Practitioner Essentials (Second Edition)
Amazon Web Services
Skills
Libraries/APIs
React, Node.js, Redux-Saga, REST APIs, D3.js, Immutable.js, AWS Amplify, Google Maps API, Beautiful Soup, Google Sheets API, React DnD, PayPal API, Stripe API, jQuery, Web3.js, Socket.IO
Tools
Git, AWS AppSync, Figma, ChatGPT, Celery, Mongoose, Amazon Cognito, AWS IAM, Miro, Redux Toolkit, AWS Key Management Service (KMS)
Languages
JavaScript, ECMAScript (ES6), Python, TypeScript, CSS, HTML, SCSS, GraphQL, SQL, PHP, HTML5, CSS3
Frameworks
Redux, Bootstrap, Ant Design, Next.js, Express.js, Serverless Framework, NestJS, Tailwind CSS, Selenium, Django, CodeIgniter, Material UI, Bedrock
Paradigms
Web Architecture, RESTful Development, Test-driven Development (TDD), Functional Programming, Asynchronous Programming, Microservices, Dependency Injection, HIPAA Compliance, Agile Project Management, Serverless Architecture, Service-oriented Architecture (SOA)
Platforms
Vercel, AWS Lambda, Amazon EC2, Heroku, Amazon Web Services (AWS), AWS Elastic Beanstalk, Docker
Storage
MongoDB, Databases, MySQL, Redis, PostgreSQL, Elasticsearch, Amazon S3 (AWS S3), Amazon DynamoDB
Other
OpenAI, Full-stack, Web Development, CORS, Vite, API Integration, Software as a Service (SaaS), API Gateways, Payment Gateways, CI/CD Pipelines, Serverless, SaaS, Stripe Payments, PayPal, WebSockets, Generative Artificial Intelligence (GenAI), Amazon Route 53, Finance, Architecture, Webhooks, Storybook, Artificial Intelligence (AI), Data Visualization, Critical Thinking, Axios, GitHub Actions, Large Language Models (LLMs), Embeddings from Language Models (ELMo), Retrieval-augmented Generation (RAG), Web App Development, Web Applications, Server Sent Events (SSE)
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