Shahzaib – React, Typescript, Node.js

It's a job portal that enables employers to post jobs, shortlist candidates, and schedule interviews, while allowing candidates to search for and apply to jobs.

• Designed and delivered a greenfield job marketplace platform from scratch, covering both employer and candidate workflows.
• Implemented the back end using Nest.js with a modular architecture, clean separation of concerns, and RESTful API design.
• Built the front end with React, developing intuitive user flows for job posting, applications, candidate shortlisting, and interview scheduling.
• Modeled core domain entities (Jobs, Candidates, Employers, Applications, Interviews) to ensure extensibility and data integrity.
• Implemented authentication and authorization for secure user access control.
• Delivered a production-ready system with a foundation for future features such as subscriptions, analytics, and notifications.

It's a secure service-to-service authentication and authorisation framework using Azure ENTRA ID, fully aligned with the organisation’s Azure infrastructure.

• Implemented service-to-service authentication using OAuth 2.0 Client Credentials Flow with Azure Entra ID, removing the need for user interaction.
• Created dedicated App Registrations per service to enable isolated identities, independent lifecycle management, and stronger security boundaries.
• Automated Azure Entra ID App Registration management with Terraform for consistency, repeatability, and infrastructure-as-code alignment.
• Standardized JWT token validation across services to ensure authenticity, integrity, and trusted issuer verification.
• Enforced scope-based authorization by scoping tokens to target service App Registrations for precise access control.
• Introduced Role-Based Access Control (RBAC) at the service level to restrict API access and enhance security governance.
• Strengthened the platform’s security posture by adopting Azure-native identity management and reducing operational overhead.
• Enabled scalable onboarding of new services with minimal friction while maintaining strict security and compliance standards.

It's a Marketing Technology Platform for a food delivery company that enables the marketing team to independently create, manage, and run customer-facing campaigns.

• Built the front-end experience for a self-serve marketing platform used by internal teams.
• Empowered marketing teams to create, configure, and manage campaigns independently from developers.
• Implemented flexible voucher logic supporting both fixed-amount and percentage-based discounts.
• Integrated seamlessly with live production systems, including checkout and customer flows.
• Prioritized usability and reliability to handle frequent campaign updates with high business impact.
• Liaised with product and marketing stakeholders to translate business needs into scalable solutions.

It's a product for a leading global meal-kit subscription company that lets customers easily refer friends and receive a reward when the referred user places their first order.

• Delivered a production-ready referral product aligned with business growth and retention goals.
• Built and launched the end-to-end front-end experience from concept to production.
• Integrated with existing back-end services for accurate referral tracking and reward fulfillment.
• Focused on delivering a frictionless user journey with clear and easy reward redemption.
• Maintained reliability and performance while working within an active production environment.
• Collaborated with stakeholders to translate business requirements into an intuitive user-facing product.

It's a reliable automation system that connects Jira and GitHub with an internal ticketing platform, eliminating manual work and ensuring development teams never miss important tasks.

• Designed the end-to-end event-driven architecture for Jira and GitHub integrations.
• Implemented secure webhook ingestion APIs in Node.js with signature validation.
• Designed a database schema for webhook event storage with idempotency guarantees.
• Built asynchronous processing workers to transform external events into internal developer tickets.
• Defined normalized data models to unify Jira and GitHub events into a single internal ticket format.
• Integrated Hasura GraphQL for data persistence, permissions, and service-to-service communication.
• Implemented retry, failure handling, and replay mechanisms for failed webhook events.
• Ensured scalability and reliability by decoupling webhook ingestion from business logic.
• Added observability through structured logging, status tracking, and error monitoring.
• Collaborated with stakeholders to align internal ticket workflows with development processes.

It's an AI-driven conversational chatbot for Facebook Messenger powered by Wit.ai. The solution allows car owners to publish ride availability and passengers to submit ride requests seamlessly within a chat interface.

• Designed and implemented an AI-powered chatbot for intent recognition, entity extraction, and conversational flow management.
• Built chatbot workflows to capture ride availability from car owners and ride requests from passengers through natural language input.
• Integrated Facebook Messenger APIs to manage real-time messaging, user sessions, and event-driven interactions.
• Developed back-end logic to match ride offers with passenger requests for efficient carpool coordination.
• Earned 3rd place in the Facebook Developers Community Asia competition for innovation and real-world impact.