Tahir Mammadov
Toronto,Canada
Overview
6
6
years of professional experience
Work History
Software Engineer
Amazon
03.2025 - Current
- Improved customer data privacy by integrating Aurora PostgreSQL operational workflows with AWS ZOA, implementing policy-based access controls that automatically approve, reject, or require customer consent for sensitive engineer operations..
- Designed and implemented a dynamic timeout adjustment mechanism for Aurora PostgreSQL read-only node joins—eliminating infinite retry loops—and delivered the solution end-to-end with direct customer collaboration, resulting in a 100% reduction in on-call pages related to join timeouts.
- Mentored junior engineers, providing technical guidance and career support that contributed to multiple promotion outcomes.
Senior software engineer
Empower
11.2023 - 03.2025
- Resolved a critical double debit issue through data analysis and automated monitoring, reducing company costs by $10K per month
- Recommended and led the migration from Storage Queues to Service Bus, reducing publishing times from 1 hour to under 3 minutes for over 2.5 million items, which significantly improved system throughput and operational efficiency
- Optimized unit testing processes by implementing parallel execution, leading to a dramatic reduction in test runtimes and accelerated development cycles, thus enhancing productivity
- Refined the collection mechanism, improving system performance, scalability, and reliability
- Designed an automated refund system to manage double debits, eliminating the need for manual intervention and saving substantial company time
Senior Software Engineer
Borderless
01.2023 - 11.2023
- Led a cross-functional team in designing and implementing a secure two-factor authentication system, enhancing user experience, while ensuring strict adherence to industry standards for security and usability
- Designed and implemented a contract generation tool that automated 98% of manual processes, drastically reducing human error and saving 10 hours per week, contributing to improved operational efficiency
- Orchestrated the entire development lifecycle, fostering seamless collaboration among team members and ensuring strict adherence to project timelines
- Influenced team OKRs and strategic goals by actively contributing to management meetings, aligning technical initiatives with business objectives
Software Engineer
Clearco
06.2021 - 01.2023
- Engineered a new payment and beneficiary service architecture, resulting in $1M annual savings in fees, demonstrating a strong financial impact
- Architected a scalable payment system with built-in security measures to support evolving business needs and compliance with industry standards
- Delivered high-quality, efficient code that balanced speed with performance, contributing to reduced development cycles and improved product reliability
Backend Developer
Ecobee
01.2021 - 06.2021
- Increased code coverage by 20% through implementing strategic testing methodologies and refactoring services, ensuring more reliable and maintainable code
- Introduced a retry policy that led to a 13% improvement in thermostat dispatch success rates, bolstering overall system reliability
- Migrated database operations from raw SQL to GORM, improving data handling efficiency and simplifying database interactions
Software Engineer
Ritual Inc
07.2019 - 01.2021
- Optimized Spring REST controllers and custom JSP tag libraries, boosting request handling efficiency and enhancing application performance
- Redesigned the payment system, improving both reliability and speed, contributing to a smoother user experience and reduced downtime
- Played a key role in global product launches and led technical initiatives, driving strategic impact on business expansion
- Developed a Google Calendar integration feature to automate appointment rescheduling and cancellation
Education
Bachelor of Computer Science -
University of Waterloo,
Skills
Languages: Java, Python, Go, JavaScript, C/C, C#
Web Development: HTML, CSS, React, React Native
Frameworks & Libraries: Spring Boot, Flask, Expressjs, NET Framework/Core, Nestjs
Databases: MySQL, PostgreSQL, MongoDB, Cosmos DB
Cloud & DevOps: AWS, Azure, Google Cloud Platform, Docker, Kubernetes, Jenkins, Azure Service Bus
Timeline
Software Engineer
Amazon
03.2025 - Current
Senior software engineer
Empower
11.2023 - 03.2025
Senior Software Engineer
Borderless
01.2023 - 11.2023
Software Engineer
Clearco
06.2021 - 01.2023
Backend Developer
Ecobee
01.2021 - 06.2021
Software Engineer
Ritual Inc
07.2019 - 01.2021
Bachelor of Computer Science -
University of Waterloo,