Years of experience
Hi, I’m
Rejish Cheruvatta
Irving,TX
Summary
Dynamic Senior Engineering Leader with 24 years of experience in architecting and delivering
security-critical cloud platforms across enterprise endpoint protection, mobile messaging, and
connected-vehicle ecosystems. Expertise includes over 5 years of successfully leading
geographically distributed teams of more than 30 engineers.
Architected AWS-based platforms that power BlackBerry Cylance Protect, an AI-driven
endpoint security solution, and BlackBerry Intelligent Security risk analytics. Currently focused
on delivering cloud software for Toyota's connected-vehicle Product Cybersecurity portfolio,
which includes ISO 15118 Plug & Charge, Home Energy Management Systems, and
cryptographic services, while fostering collaboration on cross-functional, multi-region
initiatives.
Overview
24
2
Certificate
1
Patent
Work History
Toyota Motors North AmericaPlano, Texas
Principal Software Engineer
07.2024 - Current
Job overview
- Defined cloud architecture strategy for Toyota's Vehicle-to-Grid (V2G) and Home Energy
Management (HEMS) platforms, aligning product, cybersecurity, and regional
engineering organizations across North America, Europe, and Japan. - Drove development of the Plug n Charge (ISO 15118) program, owning core feature
design and delivery for secure EV-to-charger communication. - Directed multiple Product Cybersecurity initiatives across cloud platforms, expanding
scope to lead the broader team following the Senior Manager's departure. - Established a scalable authentication, authorization, and data-protection solution
powering the 24M-user profile service. - Aligned global Toyota stakeholders (Japan/TMC, Europe/TME, and regional teams) on
architecture, security requirements, and delivery milestones. - Mentored engineers across the org on cloud architecture, secure-by-design practices,
and engineering rigor.
Blackberry Corporation
Distinguished Software Architect /Director of Engineering
03.2022 - 06.2024
Job overview
- Owned technical direction for BlackBerry Cylance Protect (AI-driven endpoint security)
and BlackBerry Persona (AI-driven behavioral identity analytics) — two flagship products
in the cybersecurity portfolio. - Led a geographically dispersed 30+ person organization of product managers, software,
and QA engineers across multiple regions. - Implemented a biweekly release cadence using hybrid and dedicated agile pods,
improving delivery predictability and throughput. - Drove end-to-end product and solution engineering on ML-based platforms with a focus
on end-user experience. - Owned the product roadmap and established technical mentorship and competency-
development programs across teams.
Blackberry Corporation
Principal Software Architect / Engineering Manager
10.2015 - 03.2022
Job overview
- Built and led a 20+ engineer team delivering the BlackBerry Intelligent Security (BIS)
Data and Risk Engine — the core risk-scoring infrastructure for BlackBerry's enterprise
security suite. - Architected an AWS-based telemetry platform processing billions of security events per
month and enabling near-real-time endpoint risk analysis. - Drove development of Risk Engine microservices that reduced endpoint risk-scoring
latency from 15 minutes to near real-time. - Directed migration of the BlackBerry Analytics Service to AWS with minimal customer-
facing impact.
Good Technology
Principal Software Engineer
03.2009 - 10.2015
Job overview
- Led architecture and delivery of server components for the Good Mobile Messaging
platform, enabling secure communication between corporate data servers and mobile
devices. - Served as subject-matter expert and primary technical point of contact for the Good
Mobile Messaging server components.
Motorola
Sr Software Engineer
10.2005 - 03.2009
Job overview
- Designed and implemented S/MIME cryptographic support for the Android Mobile Mail
Client. - Contributed to design, implementation, and maintenance of Motorola Mobile Messaging
Server for Sun Java Communication Suite and Lotus Domino mail servers. - Designed and developed contacts and calendar modules for the Android client
synchronizing PIM data with messaging servers.
JP Mobile
Senior Software Engineer
12.2003 - 10.2005
Job overview
- Contributed to design and development of JP Mobile's flagship Surewave Mobile
Messaging Suite, including the J2ME client synchronizing PIM and email modules with
the Surewave server.
Kyros Soft Tech
Embedded Software Engineer
12.2001 - 12.2003
Job overview
- Key Contributor in developing and shipping the SCOSTA and KCOS Smart Card
Operating Systems - Developed the handheld POS terminals on Rabbit Micro controllers and RS232 drivers
for Kyros Smart Card Readers.
Education
Bangalore University
Bachelor of Engineering from Computer Science
2001
Skills
- Cloud Platforms: AWS (deep), Azure — compute, storage, networking, IAM, managed data services
- Leadership: Director-level org leadership, hiring and career development, technical strategy, global stakeholder engagement
- Cloud-Native Architecture: Microservices, RESTful & event-driven APIs, serverless, container orchestration (Kubernetes / ECS), high-availability and scalability patterns
- Software Delivery: CI/CD pipelines, Infrastructure-as-Code (Terraform / CloudFormation), observability, secure SDLC, SRE principles
- Data & Analytics Platforms: Apache Spark, Delta Lake, HUDI, Databricks; large-scale telemetry ingestion and data pipelines
- Security Engineering: Endpoint protection (EDR), behavioral threat detection, secure mobile messaging, cryptographic operations (S/MIME, smart card OS)
- Product Cybersecurity (Automotive): ISO 15118 (Plug n Charge), HSM, TARA
- AI / ML: PyTorch, TensorFlow, Scikit-Learn; familiarity with Generative AI platforms
- Languages: Java, Python, Scala, Golang, C, C
Certification
AWS Certified Cloud Practitioner
AWS Certified Cloud Solutions Architect
Patents
“Message Service,” US Patent No. 10,693,826 B2, issued June 23, 2020.
Assignee: BlackBerry Limited. Co-inventors: Gautam Pulla, Gary Gilchrist, Junjun Liu.