Hamzá N.

As Principal Software Engineer at Elif Labs, I led the architecture, development, and deployment of enterprise-grade, scalable solutions across SaaS, AI-driven platforms, FinTech, E-commerce, Healthcare, and Cloud-native applications. I worked extensively with programming languages such as JavaScript (JS, ES6+), TypeScript (TS), and Python, building modern frontend applications using HTML, CSS, React.js, Next.js, React Native, Remix, React Admin, and animation frameworks like GSAP. I implemented state management with Redux, Context API, Zustand, and designed responsive UI/UX with Tailwind CSS, Bootstrap, Material UI, Ant Design, DaisyUI, leveraging SSR, SSG, and ISG for performance optimization. On the backend, I engineered high-performance APIs and microservices using Node.js, Express.js, NestJS, Flask, Django, and GraphQL with RESTful API design. I managed SQL and NoSQL databases including PostgreSQL, MySQL, MongoDB, CosmosDB, DynamoDB, Firebase, and utilized ORMs like TypeORM, Sequelize, Prisma, SQLAlchemy, along with Supabase and Google BigQuery. I integrated payment gateways (Stripe, PayPal, Payzone, Plaid) and deployed applications on AWS (Lambda Functions, S3, SNS, SQS, EventBridge, API Gateway), GCP (Google Cloud Functions, Task Queues), and Azure, with Docker, Kubernetes, CI/CD pipelines, RabbitMQ, BullMQ, and Salesforce Marketing Cloud (SFMC). Additionally, I implemented security best practices (OAuth2, JWT, RBAC, rate limiting, audit logs), maintained version control with Git, GitHub, Bitbucket, GitLab, documented APIs using Swagger and JSDoc, and optimized workflows with Cloudflare and N8N. My expertise spans Agile methodologies (SCRUM, Kanban, Sprint), project management tools (JIRA, ClickUp, Trello, Linear), testing frameworks (Jest, Playwright, Supertest), and code quality tools (Eslint, Husky, Prettier), consistently delivering secure, maintainable, and high-performance software solutions.

Backend engineer

✅ 2018 - Transition to Full Stack & SaaS Development Moved into a dedicated Full Stack Developer role, handling both frontend and backend. Built SaaS applications with React.js, Next.js, Redux, Tailwind CSS, Ant Design on the frontend. Developed RESTful APIs and GraphQL services using Node.js, Express.js, and NestJS. Managed databases including PostgreSQL, MySQL, MongoDB, and Firebase for efficient data modeling and migrations. Introduced SSR & SSG with Next.js to improve SEO, scalability, and user experience. Containerized apps with Docker and deployed services on AWS (Lambda, EC2, S3, API Gateway). ✅ 2019 - Scaling Systems & Cloud-Native Development Delivered microservices-based architectures for enterprise-grade applications. Implemented CI/CD pipelines with GitHub Actions and GitLab for automated testing and deployment. Integrated Stripe, PayPal, and Plaid payment gateways with secure transaction handling. Applied OAuth2, JWT, and RBAC for enterprise-grade authentication & authorization. ✅ 2020 - Advanced Engineering & DevOps Spearheaded adoption of Kubernetes for container orchestration and scaling. Integrated event-driven systems using AWS SQS, SNS, EventBridge, and RabbitMQ/BullMQ. Improved application performance with lazy loading, caching (Redis), and optimized SQL queries. Enhanced monitoring & observability using Datadog, BetterStack, and CloudWatch. Mentored junior developers, established code review standards, reusable design patterns, and technical documentation. ✅Outcome: Progressed into a Full Stack Developer capable of delivering enterprise-level, secure, and scalable applications. Gained expertise in React.js, Next.js, Node.js, NestJS, GraphQL, AWS, Docker, Kubernetes, SQL & NoSQL databases, CI/CD pipelines, and modern DevOps practices. Laid the foundation for future leadership roles by driving system architecture, performance optimization, and team mentorship.

✅ 2017, Started Journey as a Full Time Software Engineer • Developed scalable backend services using Node.js, Express.js, and NestJS for applications • Implemented TypeScript to ensure strong type safety and maintainable code across large codebases • Built SSR and SSG applications using Next.js to optimize SEO and page load times • Created responsive and dynamic UIs using React.js, Tailwind CSS, Bootstrap, and Ant Design • Designed and consumed GraphQL APIs for high-performance data retrieval alongside RESTful APIs • Managed both SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Firebase, DynamoDB) databases, ensuring efficient data modeling and migrations • Integrated Stripe and PayPal payment gateways with secure transaction handling and fraud prevention • Applied OAuth2, JWT, and role-based access control (RBAC) to strengthen application security • Orchestrated CI/CD pipelines with GitHub, GitLab, and Bitbucket for automated testing and deployment • Containerized applications using Docker and deployed services to AWS (S3, Lambda, EC2, API Gateway) • Used Redux, ContextAPI, and Zustand for predictable state management in complex frontend apps • Optimized application performance through code-splitting, lazy loading, and database query tuning • Led code reviews, maintained technical documentation, and introduced design patterns for reusability • Adopted Agile/SCRUM practices, collaborating with cross-functional teams for timely feature delivery ✅ Outcome: Delivered multiple high-impact projects with enterprise-grade architecture, integrating secure APIs, scalable infrastructure, and modern frontend frameworks solidifying expertise as a full-stack software engineer ready for complex system design.

✅ 2015, Foundation & Learning Phase • Joined Alpha Technologies as an Associate Software Engineer (Contract) focusing on frontend Dev. • Learned and applied HTML5, CSS3, and JavaScript (ES6) to develop responsive and accessible UIs. • Collaborated with senior developers to understand version control using Git and GitHub. • Gained initial exposure to Agile/SCRUM workflows and participated in sprint planning & code reviews. • Built small reusable UI components and improved website load time. ✅ 2016 Skill Expansion & Backend Introduction • Transitioned frontend to full-stack responsibilities by learning Node.js and Express.js for backend APIs. • Integrated MySQL and MongoDB databases, handling CRUD operations and basic data modeling. • Worked on REST API development for internal tools and client-facing applications. • Started exploring React.js for dynamic and state-driven interfaces. • Implemented basic authentication with JWT and session handling. • Participated in testing and debugging, improving application stability and reducing bugs by 20%. ✅ 2017, Intermediate Engineering & Project Ownership • Took ownership of small projects from requirement gathering to deployment. • Implemented Redux and improved state management for scalable frontend applications. • Developed role-based access control (RBAC) features for client systems. • Deployed applications on AWS (S3, EC2) with basic CI/CD pipelines. • Collaborated with the UI/UX team to refine application interfaces for better user experience. • Mentored 2 junior interns, introducing them to Git workflows, code quality standards ✅ Outcome: By the end of 2017, progressed from a beginner-level developer writing basic HTML/CSS to a full-stack engineer capable of delivering secure, scalable, and production-ready applications. Built the foundation that enabled growth into principal and leadership roles later in career.

Built a strong foundation in software engineering, full-stack development, and computer science fundamentals including algorithms, data structures, databases, operating systems, and networks. Gained hands-on expertise in JavaScript, TypeScript, Python, React.js, Next.js, Node.js, Express.js, NestJS, SQL, NoSQL, MongoDB, PostgreSQL, AWS, Docker, and Kubernetes. Completed projects in web development, SaaS, cloud computing, microservices, and system architecture. Active in hackathons, coding competitions, AI/ML club, and tech societies developing teamwork, leadership, and agile collaboration skills.