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Syed Ali Zafar
Senior Full-Stack Engineer specializing in Next.js, TypeScript, Python, PostgreSQL, AWS, and payment-driven SaaS systems open to offers
Open to offersKarachi, Pakistan
About
Senior software engineer experienced in building backend APIs, Elasticsearch integrations, and AWS-based deployments. Worked at Payactiv, Bizdemy.ai, Grotabyte, and Miletap delivering scalable services and complex features.
Skills
Experience
Sr Software Engineer
Payactiv · Feb 2025 to Feb 2026
- Developed and maintained microservices using .NET Core to improve scalability and performance.
- Led integration of Single Sign-On (SSO) services to enhance authentication efficiency.
- Implemented business onboarding services to streamline client onboarding and reduce time-to-launch.
- Architected and developed a webhook service handling 10M requests per day with fallbacks for 100% uptime.
Sr Software Engineer, ConnectAI Project
Bizdemy.ai · Nov 2023 to Jan 2025
- Developed and architected backend APIs establishing core application functionality.
- Led end-to-end implementation from data extraction with Scrapy to Elasticsearch integration, enhancing search capabilities.
- Served as acting team lead during critical periods to drive issue resolution and maintain momentum.
- Managed deployments via GitHub Actions, maintained EC2 instances, and utilized AWS ECS for background jobs.
Software Engineer
Grotabyte · Feb 2022 to Nov 2023
- Led the frontend engineering team to implement complex features while maintaining code quality and best practices.
- Worked with the Elastic stack alongside SQL Server and RabbitMQ to deliver complex product features.
- Handled on-premises deployments for the application's core features.
Software Engineer
Miletap · Jun 2021 to Feb 2022
- Built complex real-time applications requiring in-depth DOM knowledge, similar to Google Docs, Sheets, and Slides.
- Implemented Clean Architecture for backend APIs and created microservices integrated with the main application.
- Contributed features to React Native mobile applications.
- Leveraged AWS services including ECR, CloudFormation, and S3 for deployment and management.
- Handled server deployments and operations using Linux and Bitbucket Actions.
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