Ammar Zahid

AMMAR ZAHID Software Developer - - Pakistan ammar zahid SUMMARY Associate Software Engineer with experience designing and delivering scalable, high-availability web and cloud solutions. Proven ability to improve system performance and reliability while collaborating across teams to accelerate feature delivery. Committed to clean code, automation, and continuous improvement WORK EXPERIENCE Speridian Technologies September 2024 - Present Associate Software Engineer Implemented AWS Lambda microservices, boosting system reliability to 99.9% uptime and cutting operational costs by 20%. Supported AWS Cognito authentication and Docker containerization, enhancing deployment efficiency and achieving 85% unit-test coverage. August 2024 - September 2024 Systems Limited Software Engineer Trainee Automated QA for cloud applications, cutting pre-release defects. Practiced Node.js AWS microservices, supporting feature launches. EDUCATION Bachelor of Science in Computer Science September 2020 - June 2024 Air University GPA: 3.74 - Gold Medallist SKILLS Frontend: AngularJS, ReactJS, NextJS, HTML5, CSS, Bootstrap, JQuery. Backend: Node.js, Express, .NET. AWS: DynamoDB, Cognito, S3, API Gateway, CodePipeline, CloudWatch, CloudFormation, AWS AppSync. Languages: JavaScript, TypeScript, C#, Python, C++, PHP, SQL Databases: MongoDB, MySQL, PostgreSQL, DynamoDB Lambda, PROJECTS HALO - IoT Smart Home System | ASSA ABLOY (Mar 2025 - Present) Technology Used: Angular, Node.js, AWS, DynamoDB, GraphQL, Lambda, Iot Core, AppSync Engineered a fully serverless backend for HALOC/H30C platforms, supporting 100K+ connected devices and processing 1M+ daily API requests with 99.8% success and uptime. Migrated AWS SDK v2→v3 across consumer & web-center portals, boosting performance by 25%, shrinking bundle sizes by 30%, and reducing load times. Designed enterprise-grade security: custom Cognito + Lambda authorization flows for remote lock control, and unified API gateway for integrations (SmartThings, Alexa, Google Assistant). Led full-stack development of responsive Angular 14 consumer and web-center portals; systematic QA process cut critical UI defects by 60%. Automated CI/CD & infrastructure with CodePipeline, CloudFormation, and CloudFront; optimized CloudWatch monitoring to maintain service reliability at scale. Instituted testing and cross-team support, achieving 90% unit-test coverage and reducing cross-team blockers by 40% through cloud expertise for mobile & partner teams. EzWork - Online Freelancer Marketplace (2025) Technology Used: React.js, Node.js, Express, MongoDB, JWT, CLoudinary Implemented a full-stack marketplace supporting 1,000+ active buyers and sellers. Designed and optimised MongoDB schema managing gig documents, improving the database. Developed RESTful APIs with Express.js and Node.js for user operations, achieving authentication uptime via JWT-and-cookie security. Set up real-time chat using Node.js and MongoDB Change Streams and employed React.js with React Query and useReducer for state management. RozMarrah - Freelancing Platform (2025) Technology Used: Next.js, TypeScript, React.js, Node.js, Express, MongoDB, Socket.io, Stripe Cloudinary. Launched a dual-role marketplace serving freelancers, clients, facilitating job postings and contracts. Engineered secure authentication flow with full life-cycle pages, reducing signup friction and account recovery issues. Developed provider and seeker dashboards with real-time job listings, active jobs management, invoices and profile modules - streamlining workflows and cutting average hiring time by 28%. Implemented RESTful APIs in Node.js/Express with MongoDB optimised for 100+ documents. Integrated Socket.io chat and notification system processing 3,000+ messages and 10,000+ alerts monthly with less than 200 ms latency. Integrated Stripe subscriptions and one-off payments with webhooks, processing transactions and automating invoice generation - reducing billing errors by 60%. Meraki Organics – Marketing Website (2025) Technology Used: JavaScript, Bootstrap, HTML, CSS Designed and built a responsive site for an organic beauty brand, achieving a sub-2 second average page load time and 100% mobile-responsive layouts across desktop, tablet and mobile breakpoints. Constructed a real-time product grid on the Products page, reducing content-update effort by 80% and enabling ‘Quick View’ modals for 20+ SKUs Created advanced client-side filtering and sorting by category, price, name - lowered average user bounce rate by 25%. Optimized all images and leveraged browser caching, reducing overall page weight by 45%. Added SEO enhancements - unique meta titles/descriptions per page, Open Graph tags, breadcrumb navigation - resulting in a 20% increase in organic search traffic within 8 weeks. SolarTec – Website for Solar Energy Company (2024) Technology Used: React.js, Node.js, Express, MongoDB Developed a dynamic MERN-stack site showcasing 10+ projects, driving a 25% increase in quote requests. Created a step-by-step online quotation workflow and built reusable React.js components for service descriptions and testimonials, reducing development time by 30%. WeConnect – Social Networking Platform (2024) Technology Used: React.js, Node.js, Express, MySQL Engineered user profile, media-sharing and story modules. Implemented engagement features (likes, comments, feeds), boosting average session duration. Integrated notification system with WebSockets, achieving message delivery reliability.