Rayyan Choudhury Email & Phone Number

Mississauga, Ontario, Canada

- Support a portfolio of 20 legacy customers by handling inbound customer support calls and emails for Certicom AMI, Certicom AMS and Certicom SSL toolkits, seeing 150 tickets to resolution (over a 3-year period) while maintaining an MTTR of 30 minutes for high impact incidences- Provide primary on-call assistance for security escalations, maintaining the Sev 1 SLA of 6 hours- Achieved full WebTrust and SOC2 compliance by reducing vulnerabilities from 200 to 0 through running… Show more - Support a portfolio of 20 legacy customers by handling inbound customer support calls and emails for Certicom AMI, Certicom AMS and Certicom SSL toolkits, seeing 150 tickets to resolution (over a 3-year period) while maintaining an MTTR of 30 minutes for high impact incidences- Provide primary on-call assistance for security escalations, maintaining the Sev 1 SLA of 6 hours- Achieved full WebTrust and SOC2 compliance by reducing vulnerabilities from 200 to 0 through running comprehensive quarterly scans across 4 production systems and taking corrective actions- Optimized systems durability to 99.7% by creating mirror DR servers, performing annual tests and maintaining latest system backups- Acted as both Device CA Process Coordinator and Support Personnel for Zigbee Operations, ensuing a semi-weekly turnover for all orders by promptly vetting orders, assessing customer credit standing and generating Zigbee certificates Show less

Toronto, Ontario

- Developed Automatic Train Supervision (ATS) software, in C++, for critical worldwide Communications-Based Train Control (CBTC) signaling system projects, including Edmonton Metro LRT, Hong Kong Automated People Mover, Hyderabad Metro Rail System and Walt Disney World Monorail System- Managed overall project progress, ensuring deadlines were delivered within 2 weeks of completion deliverables by defining work plans, managing scope, schedules, resources, budget and cost estimates with the… Show more - Developed Automatic Train Supervision (ATS) software, in C++, for critical worldwide Communications-Based Train Control (CBTC) signaling system projects, including Edmonton Metro LRT, Hong Kong Automated People Mover, Hyderabad Metro Rail System and Walt Disney World Monorail System- Managed overall project progress, ensuring deadlines were delivered within 2 weeks of completion deliverables by defining work plans, managing scope, schedules, resources, budget and cost estimates with the integrated engineering team- Held scrum meetings for development teams of 3 for a 2-week Sprint Cycle and led the Sprint Retrospective to maintain the short-term progress of projects during the company’s transition to Agile- Delivered features for onboard diagnostics, schedule management, speed management, route setting, detection and prediction ensuring an 80%+ test coverage and 100% pass rate using a custom Perl Scripting Engine and Environment simulator- Addressed new functionality requests by collaborating with system design engineers to analyze and clarify new requirements, convert system design descriptions to software specifications and detailed design Show less

Waterloo, Ontario

- Coordinated the testing resources and a team of engineers and to validate the software integrity of BlackBerry products for radio conformance to meet formal release deadlines and before submitting to 3rd party test labs- Tracked the software of 2G/3G/LTE BlackBerry products, both in-market and prototypes, and maintained multiple formal certification deadlines for global standards (3GPP, OMA)- Performed Protocol/RF tests with Rohde & Schwarz, Anite and Agilent radio conformance… Show more - Coordinated the testing resources and a team of engineers and to validate the software integrity of BlackBerry products for radio conformance to meet formal release deadlines and before submitting to 3rd party test labs- Tracked the software of 2G/3G/LTE BlackBerry products, both in-market and prototypes, and maintained multiple formal certification deadlines for global standards (3GPP, OMA)- Performed Protocol/RF tests with Rohde & Schwarz, Anite and Agilent radio conformance equipment- Documented and escalated all test failure reports on MKS Integrity until resolution from developers - Acted as a liaison and facilitated meetings between the engineering team and upper management to report on progresses, risks and issues Show less

Master Of Engineering - Meng, Electrical And Computer Engineering

Bachelor Of Applied Science And Engineering, Electrical Engineering