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Aibak Shahzad
Verified Expert in Engineering
Full-stack Developer
Lahore City, Punjab, Pakistan
Toptal member since February 27, 2026
Bio
Aibak is a full-stack engineer with 5+ years of experience building SaaS and consumer apps using Next.js, NestJS, and AWS. He also has extensive experience with React and Node.js, has strong problem-solving skills, and has solved 200+ LeetCode questions. Aibak has also led a team of engineers, guiding architecture and mentoring junior developers.
Portfolio
Kosmic
Amazon S3 (AWS S3), CSS3, Docker, GitHub Actions, Material UI, NestJS, Next.js...
Devsinc
Express.js, Ant Design, AWS Elastic Load Balancer, Amazon EC2...
Devsinc
JavaScript, Express.js, Ant Design, Cypress, GraphQL, Jest, NestJS, Next.js...
Experience
- React - 5 years
- TypeScript - 5 years
- Node.js - 5 years
- Express.js - 5 years
- JavaScript - 5 years
- Web App Development - 5 years
- Next.js - 4 years
- MongoDB - 4 years
Work Experience
Senior Software Engineer
2023 - 2024
Kosmic
- Worked as a senior full-stack engineer and developed a video editing platform like Capcut from scratch, but with more features.
- Implemented complex features using TypeScript, React, Next.js, Socket.io, FFmpeg, and Material UI (MUI).
- Implemented a smooth registration process and maintained sessions across multiple browsers.
- Improved user experience repeatedly by adding different caching techniques and transitions for aesthetics.
- Wrote unit and integration tests to test all the desired functionality using Jest, React Testing Library, and Cypress.
Technologies: Amazon S3 (AWS S3), CSS3, Docker, GitHub Actions, Material UI, NestJS, Next.js, PostgreSQL, RTK Query, Socket.IO, Redux, Stripe, TypeORM, TypeScript, Web App Development, Google Cloud Platform (GCP), Full-stack Development, AI Integration, Supabase, Generative Artificial Intelligence (GenAI), Full-stack, Fastify, Vercel, Security, Back-end, AI Tools, User Experience (UX), User Interface (UI), Technical Leadership, Front-end Development, Strapi, Vue, Nuxt.js, Claude Code, Tailwind UI, Back-end Development, Payment APIs, Integration, Stripe API, Front-end, React Hook Form, Server-side Rendering (SSR), API Design, LLM Integration, AI Automation, ChatGPT API, GitHub, Agentic Coding, Web Application Design, Development, Web, CMS, Content Management Systems (CMS), AI Agents, Distributed Systems, Multi-tenant SaaS, Prompt Engineering, Agentic AI Systems, Agentic Frameworks, Agentic RAG Systems, Large Language Model Operations (LLMOps), Software Architecture, LangGraph, HTML5, Dashboards, MVP Design, Application State Management, Responsive UI, Data Security, Web Design, OAuth, SaaS, Landing Pages, Integrations, Web Application Architecture, AI-assisted Development, Codex, Bug Fixes, Data Modeling, OpenAI, Workflow Automation & System Integration, Role-based Access Control (RBAC), Data Engineering, AI Architecture, AI Engineering, AI Model Integration, AI Model Training, Image Processing
Software Engineer
2022 - 2023
Devsinc
- Managed a team of over five developers and dealt with four clients to build web applications.
- Developed customized UI using TypeScript, React, and Next.js.
- Designed a suitable architecture for the requirements by evaluating 3rd-party libraries based on functionality, code bloat, and performance, gaining a client satisfaction rate of 98% for project deliverables.
- Increased the performance of applications by 20% by implementing caching, code refactoring, and database query optimization.
- Wrote unit and integration tests covering all desired functionality using Jest, React Testing Library, and Cypress.
- Deployed a state management package to npm similar to Redux, simplifying Redux data flow.
Technologies: Express.js, Ant Design, AWS Elastic Load Balancer, Amazon EC2, Amazon S3 (AWS S3), Cypress, Docker, GitHub Actions, GraphQL, JavaScript, MongoDB, Material UI, Next.js, Node.js, PostgreSQL, NestJS, React, Prisma, React Testing Library, Jest, RTK Query, Socket.IO, Redux Toolkit, Redux, SQL, CSS3, Tailwind CSS, Stripe, TypeORM, TypeScript, Redis, Web App Development, Amazon Web Services (AWS), Google Cloud Platform (GCP), Full-stack Development, AI Integration, Claude API, Supabase, Sitecore, ChatGPT, Django, React Native, Full-stack, Performance, Vercel, Security, Back-end, APIs, Mobile App Development, Payments, Headless Commerce, HTML, AI Tools, Cursor AI, REST APIs, Mobile Design, User Experience (UX), User Interface (UI), Technical Leadership, Front-end Development, Migration, Healthcare, Legacy Code, OWASP Top 10, Strapi, Vue, Nuxt.js, Tailwind UI, Back-end Development, FastAPI, Android, iOS, WhatsApp API, Front-end, React Hook Form, Server-side Rendering (SSR), n8n, GitHub, Development, Web, Data-driven Dashboards, RESTFul APIs, RESTful Microservices, AI Agents, Distributed Systems, Multi-tenant SaaS, Software Architecture, HTML5, Streaming, Browsers, Dashboards, Application State Management, Responsive UI, Mobile Development, Data Security, Web Design, OAuth, UI Design, SaaS, Mobile, Landing Pages, Integrations, Web Application Architecture, Bug Fixes, Data Modeling, Graph API, Role-based Access Control (RBAC), SQLModel, Data Engineering, Cloudflare, Cloudflare Durable Objects, Web Applications, Supabase Auth, Security Audits, Row-level Security (RLS), Firebase, Firebase Authentication, Mobile App Security
Associate Software Engineer
2021 - 2022
Devsinc
- Worked on a freelance marketplace, implemented features on the front end using React and TypeScript, refactored code, and optimized API requests.
- Implemented UI Design Patterns and split the components into atoms, molecules, and organisms, using a mono repo architecture.
- Worked on an ERP project and refactored the codebase from React 15 to React 16.8.
- Overhauled the obsolete legacy source code and changed all the class components to functional components, maintaining the UI consistency.
- Wrote test cases using Jest and React Testing Libraries and made the UI pixel-perfect in Figma.
- Designed training and peer-mentoring programs for the incoming batch of developers, reducing onboarding time for new hires by 50%.
Technologies: JavaScript, Express.js, Ant Design, Cypress, GraphQL, Jest, NestJS, Next.js, Node.js, OAuth2.0, MongoDB, React, Material UI, React Testing Library, Redux, RTK Query, Redux Toolkit, Socket.IO, React Test Renderer, SuperTest, Tailwind CSS, Stripe, TypeScript, Web App Development, SQL, Prisma, TypeORM, Mongoose, PostgreSQL, MongoDB Atlas, MySQL, Docker, Amazon EC2, Amazon S3 (AWS S3), Amazon RDS, AWS Elastic Load Balancer, Amazon CloudFront CDN, Amazon CloudWatch, GitHub Actions, CSS, Redis, Web Development, Full-stack Development, AI Integration, Claude API, HIPAA Compliance, Supabase, Sitecore, ChatGPT, Retrieval-augmented Generation (RAG), AWS Lambda, Full-stack, Large Language Models (LLMs), Performance, Vercel, Security, Mobile First, Architecture, Back-end, Data Pipelines, API Integration, APIs, Mobile App Development, Payments, Localization, API Architecture, Headless Commerce, HTML, AI Tools, Claude, REST APIs, Vite, Mobile Design, User Experience (UX), User Interface (UI), DigitalOcean, Microservices Architecture, Front-end Development, Healthcare, Legacy Code, OWASP, Strapi, Vue, Nuxt.js, Tailwind UI, Back-end Development, PHP, WhatsApp, Web, HTML5
Associate Software Engineer
2021 - 2021
Codility
- Refactored the legacy ERP system by removing duplicate code, using descriptive naming, eliminating dead code, and optimizing data structures.
- Increased the performance of queries by shifting business logic to the database level, making it faster.
- Fixed lag in UI renders using React Virtualized to optimize large lists of users.
- Worked as a React Native developer and deployed an app on the Google Play Store and the App Store.
- Developed a services-at-home application using React Native and published the mobile application on the Play Store.
- Increased code performance, extensibility, manageability, and testability, enhancing the overall code efficiency by 20%.
- Enhanced the user experience by providing instant updates on order status changes using Socket.io.
Technologies: JavaScript, TypeScript, React, Next.js, RTK Query, Redux, Redux Toolkit, Socket.IO, Jest, Stripe, React Testing Library, Cypress, React Test Renderer, SuperTest, Tailwind CSS, Material UI, Ant Design, Node.js, Express.js, NestJS, GraphQL, OAuth2.0, Redis, Web Development, Web App Development, Full-stack Development, HIPAA Compliance, Supabase, Artificial Intelligence (AI), Agentic AI, LangChain, React Native, Amazon DynamoDB, Full-stack, Performance, Vercel, Security, Architecture, Back-end, API Integration, APIs, Computer Vision, Localization, API Architecture, HTML, AI Tools, Claude, Cursor AI, Vite, Mobile Design, User Experience (UX), User Interface (UI), DevOps, Microservices Architecture, Front-end Development, Strapi, Vue, Nuxt.js, Tailwind UI, Back-end Development, PHP, Web, HTML5
Project History
Echotalk
https://echotalk.co.uk/A communication platform for disabled individuals, featuring call and chat services, translation features, and sign language courses. The platform integrates real-time communication with accessibility options for different users.
As a back-end developer, I designed and implemented real-time communication features, including calls and chat services. I integrated Socket.io to enable seamless communication while ensuring accessibility features for users with disabilities. Additionally, I ensured data integrity by managing PostgreSQL and integrating TypeORM.
As a back-end developer, I designed and implemented real-time communication features, including calls and chat services. I integrated Socket.io to enable seamless communication while ensuring accessibility features for users with disabilities. Additionally, I ensured data integrity by managing PostgreSQL and integrating TypeORM.
Servita
https://servita.com/A global business transformation and consulting company that helps organizations with digital strategy, technology adoption, and large-scale change programs. They work with clients across sectors such as healthcare, government, financial services, and enterprise, focusing on outcomes rather than just providing advice. Services include strategy, project delivery, data engineering, cybersecurity, organizational change, and AI-driven transformation. Their team spans the UK, the Middle East, Africa, and APAC, with offices in places like London, Dubai, and Singapore.
As a full-stack engineer, I built the platform's front and back ends using React, Node,.js and MongoDB. I implemented seamless user interactions, integrated task and booking management features, and ensured smooth communication flows, delivering a robust and user-centric platform that improves service management and operational efficiency.
As a full-stack engineer, I built the platform's front and back ends using React, Node,.js and MongoDB. I implemented seamless user interactions, integrated task and booking management features, and ensured smooth communication flows, delivering a robust and user-centric platform that improves service management and operational efficiency.
Aimsplus
https://app.aimswebplus.com/A warehouse management system aimed at speeding up the market experience and enabling warehouse automation. I worked on the back-end architecture, ensuring smooth inventory management and efficient employee task flow.
I was responsible for the back-end architecture and database management for this warehouse management system. My role involved designing inventory management workflows to ensure employees could easily track tasks and orders. I also collaborated with the front-end team to integrate these workflows seamlessly, delivering a fast and efficient solution for warehouse automation.
I was responsible for the back-end architecture and database management for this warehouse management system. My role involved designing inventory management workflows to ensure employees could easily track tasks and orders. I also collaborated with the front-end team to integrate these workflows seamlessly, delivering a fast and efficient solution for warehouse automation.
Tournated
https://play.tournated.com/A white-label gaming platform for tournament, league, club, and event management. It enables sports organizations to manage teams, schedules, scores, rankings, memberships, bookings, and payments efficiently, with a responsive interface across devices.
I led the development of the platform, building scalable back-end systems with Node.js, Nest.js, and PostgreSQL, and designing a clean, responsive front end with React and MUI. I also integrated real-time score updates, event management, and payment processing, delivering a robust and user-friendly tournament management solution.
I led the development of the platform, building scalable back-end systems with Node.js, Nest.js, and PostgreSQL, and designing a clean, responsive front end with React and MUI. I also integrated real-time score updates, event management, and payment processing, delivering a robust and user-friendly tournament management solution.
8Chili
https://8chili.com/A revolutionary VR training platform that transforms collaboration and remote experiences in the healthcare industry. By leveraging immersive VR, the platform boosts engagement and reduces time to skill mastery, making it a game-changer for healthcare professionals. It’s designed to streamline workflows and accelerate learning, while minimizing disruptions.
I spearheaded the development of the platform, leveraging TypeScript, React, Node.js, and MUI to integrate a seamless, user-centric experience. The result is a transformative product that enhances healthcare workflows and embraces the future of healthcare technology.
I spearheaded the development of the platform, leveraging TypeScript, React, Node.js, and MUI to integrate a seamless, user-centric experience. The result is a transformative product that enhances healthcare workflows and embraces the future of healthcare technology.
Flokids
https://flokkids.com/A platform for parents to book events for their children and for organizations to create events, subscriptions, and services. This project focused on delivering an easy-to-navigate UI for event discovery and booking.
I played a key role in front- and back-end development, focusing on creating the event booking flow and payment systems. I built a robust GraphQL API to manage event data and subscriptions, enabling smooth interaction between the front-end UI and back-end services. I also worked to ensure the platform was easy to use for parents looking to book events for their children.
I played a key role in front- and back-end development, focusing on creating the event booking flow and payment systems. I built a robust GraphQL API to manage event data and subscriptions, enabling smooth interaction between the front-end UI and back-end services. I also worked to ensure the platform was easy to use for parents looking to book events for their children.
SmileMC
https://smile-mc-o75f.vercel.app/A cutting-edge platform designed to enhance communication and engagement within the healthcare community. By offering a user-friendly interface, SmileMC streamlines interactions and connects professionals for better service delivery. It is optimized to foster collaboration and increase efficiency in healthcare settings, offering seamless integration of various functionalities for ease of use.
As a full-stack developer, I was responsible for building the platform's front and back ends using React, Node.js, and MongoDB. I integrated seamless user interactions and ensured smooth communication flows, delivering a polished, user-centric product that enhances the user experience in healthcare.
As a full-stack developer, I was responsible for building the platform's front and back ends using React, Node.js, and MongoDB. I integrated seamless user interactions and ensured smooth communication flows, delivering a polished, user-centric product that enhances the user experience in healthcare.
Education
2017 - 2021
Bachelor's Degree in Software Engineering
COMSATS University - Lahore, Pakistan
Certifications
FEBRUARY 2022 - PRESENT
IBM Front-End Developer Professional Certificate
IBM | via Coursera
Skills
Libraries/APIs
React, Node.js, Stripe, React Testing Library, Claude API, REST APIs, Vue, Stripe API, React Hook Form, Socket.IO, WhatsApp API, Graph API
Tools
ChatGPT, Claude, Claude Code, n8n, GitHub, Codex, Firebase Authentication, RTK Query, Redux Toolkit, SuperTest, Prisma, Mongoose, MongoDB Atlas, Amazon CloudFront CDN, Amazon CloudWatch, Docker Compose, Agora
Languages
JavaScript, TypeScript, CSS3, GraphQL, CSS, Python, HTML, HTML5, SQL, PHP
Frameworks
Express.js, Next.js, NestJS, Tailwind CSS, React Native, Nuxt.js, Jest, Material UI, Agentic Frameworks, LangGraph, Redux, Cypress, Ant Design, Django, Fastify
Platforms
Docker, Vercel, Web, Firebase, Amazon Web Services (AWS), Google Cloud Platform (GCP), AWS Lambda, DigitalOcean, Android, iOS, Mobile, Amazon EC2
Storage
PostgreSQL, MySQL, Amazon DynamoDB, MongoDB, Redis, Data Pipelines, Amazon S3 (AWS S3)
Paradigms
HIPAA Compliance, API Architecture, Mobile Design, Microservices Architecture, Mobile Development, UI Design, Web Application Architecture, Microservices, Web Architecture, DevOps, Role-based Access Control (RBAC)
Industry Expertise
Healthcare, Web Design
Other
Web App Development, CI/CD Pipelines, Software Architecture, Web Development, Full-stack Development, Supabase, Retrieval-augmented Generation (RAG), Full-stack, Large Language Models (LLMs), Performance, Security, Architecture, Back-end, AI Tools, User Experience (UX), User Interface (UI), Front-end Development, Back-end Development, Front-end, Development, Data-driven Dashboards, AI Agents, Multi-tenant SaaS, Dashboards, Responsive UI, SaaS, Landing Pages, AI Integration, Sitecore, Artificial Intelligence (AI), Generative Artificial Intelligence (GenAI), Agentic AI, LangChain, Mobile First, API Integration, APIs, Computer Vision, Mobile App Development, Payments, Localization, Headless Commerce, Cursor AI, Technical Leadership, Migration, Legacy Code, Strapi, Tailwind UI, FastAPI, Payment APIs, Integration, Server-side Rendering (SSR), API Design, LLM Integration, AI Automation, ChatGPT API, Agentic Coding, Web Application Design, CMS, Content Management Systems (CMS), RESTFul APIs, RESTful Microservices, Distributed Systems, Prompt Engineering, Agentic AI Systems, Agentic RAG Systems, Large Language Model Operations (LLMOps), MVP Design, Application State Management, Data Security, OAuth, Integrations, AI-assisted Development, Bug Fixes, Data Modeling, OpenAI, Workflow Automation & System Integration, Data Engineering, AI Architecture, AI Engineering, Web Applications, Supabase Auth, Security Audits, Row-level Security (RLS), AI Model Integration, AI Model Training, Image Processing, Mobile App Security, React Test Renderer, OAuth2.0, TypeORM, Amazon RDS, AWS Elastic Load Balancer, GitHub Actions, Material-Ui, Financial Math, Vite, OWASP Top 10, OWASP, WhatsApp, Streaming, Browsers, SQLModel, Cloudflare, Cloudflare Durable Objects
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