Senior Cloud Migration Architect — App Modernization

Tata Consultancy Services; Irvine (CA); On-site; USD 120,000 - 140,000; Full time

Job summary

Tata Consultancy Services in Irvine, CA seeks a Lead Application Migration Architect to guide end-to-end cloud migration initiatives, focusing on rehost, replatform, and modernization of enterprise apps across AWS. You will define migration blueprints, map dependencies, review code patterns, and collaborate with infra, DB, network, and security teams to ensure secure, scalable cloud solutions.

Experience with AWS services (EC2, ALB, EBS, EFS, S3), migration tools (MGN, DMS, SCT), IAM

Qualifications

• Strong architectural expertise across Java, .NET, TIBCO ESB, and distributed enterprise systems.
• Deep experience in Application Discovery, dependency mapping, and service analysis.
• Knowledge of backend systems: Oracle 19c, Oracle Exadata on AWS, and SQL Server.
• Understanding of hosting environments: Windows Server 2016–2025 and RHEL 7–9.
• Ability to assess cloud readiness, migration complexity, and modernization opportunities.
• Strong understanding of network, integration, authentication, and storage dependencies.
• Experience producing HLDs/LLDs, sequence diagrams, integration maps, and migration assessments.
• Familiar with CI/CD, config mgmt, cloud-native design, and application performance tuning.
• Strong analytical/problem-solving skills to uncover migration risks and gaps.
• Ability to collaborate with infra, DB, cloud, and security teams effectively.
• Strong experience architecting applications on AWS EC2, ALB/NLB, EBS, EFS, FSx, and S3.
• Understanding of connectivity patterns for Oracle Exadata on AWS and application tiers.
• Familiar with AWS migration tools (MGN, DMS, SCT), IAM integration, and VPC design.
• Ability to define observability, monitoring, and operational models post migration.
• Awareness of modernization options (EKS/ECS) for future evolution of application stacks.

Responsibilities

• Lead end-to-end application discovery, dependency mapping, and readiness analysis.
• Document integration flows, DB dependencies, API calls, schedulers, and ESB interactions.
• Define cloud migration blueprints for rehost, replatform, and modernization strategies.
• Coordinate technical alignment with infra, network, DB, middleware, and cloud architects.
• Develop cloud deployment architectures for EC2-based workloads and supporting services.
• Assess performance baselines, OS/runtime compatibility, and optimization requirements.
• Review application code/architecture patterns to ensure cloud suitability.
• Produce runbooks, migration playbooks, architectural diagrams, and transition documents.
• Support cutover waves with validation of app behavior and integration continuity.
• Provide governance and oversight across all migration lifecycle stages.

Skills

Java

.NET

TIBCO ESB

Distributed systems

Oracle 19c

Oracle Exadata on AWS

SQL Server

Windows Server

RHEL

Cloud readiness

Migration complexity

Modernization

CI/CD

Config mgmt

Cloud-native design

Application performance tuning

AWS

MGN

DMS

SCT

IAM integration

VPC design

EC2

ALB/NLB

EBS

EFS

S3

Job description

Tata Consultancy Services in Irvine, CA seeks a Lead Application Migration Architect to guide end-to-end cloud migration initiatives, focusing on rehost, replatform, and modernization of enterprise apps across AWS. You will define migration blueprints, map dependencies, review code patterns, and collaborate with infra, DB, network, and security teams to ensure secure, scalable cloud solutions.

Experience with AWS services (EC2, ALB, EBS, EFS, S3), migration tools (MGN, DMS, SCT), IAM