Architect Senior Specialist

Chennai - India

Monthly Salary: Not Disclosed

Posted on: 17 hours ago

Vacancies: 1 Vacancy

Job Summary

Overview:

TekWissen is a global workforce management provider throughout India and many other countries in the world. The below client is a global company with shared ideals and a deep sense of family. From our earliest days as a pioneer of modern transportation we have sought to make the world a better place one that benefits lives communities and the planet

Job Title: Architect Senior Specialist

Location: Chennai

Work Type: Hybrid (4 Days work From Office)

Position Description:

Modernization Architect (GCP) We are executing a high-visibility enterprise-wide digital transformation to migrate our mission-critical systems from a legacy Mainframe ecosystem (DB2 z/OS COBOL JCL) to a modern cloud-native architecture on Google Cloud Platform (GCP).
As the Mainframe Modernization Architect (GCP) you will act as the principal technical authority for this transition.
Partnering directly with our Senior Technical Product Management team you will design the technical roadmap to untangle decades of legacy business logic without disrupting ongoing business operations.
You are the bridge between our veteran DB2 administrators and our modern full-stack Java development teams.
You will not just be lifting and shifting; you will be fundamentally re-architecting how our business processes data.

Key Responsibilities:

Architectural Strategy & Design
Design and own the end-to-end target state architecture on GCP utilizing Cloud SQL for PostgreSQL (or AlloyDB) Google Kubernetes Engine (GKE) and Cloud Run.
Architect a safe iterative Strangler Fig migration pattern entirely avoiding high-risk Big Bang cutovers. Define the High Availability (HA) and Disaster Recovery (DR) posture for the new cloud environment translating Mainframe RTO/RPO expectations into GCP realities. Database & Data Layer Transformation
Lead the complex heterogeneous database migration from Mainframe DB2 to GCP PostgreSQL.
Architect solutions for systemic data translation challenges including EBCDIC to UTF-8/ASCII conversion packed decimal transformations and proprietary DB2 constraint mappings.
Implement and manage Change Data Capture (CDC) pipelines (e.g. Google Datastream Debezium Striim) to ensure bidrectional or unidirectional real-time data synchronization during the coexistence phase.
Guide the engineering teams in transitioning from DB2 pessimistic locking models to PostgreSQLs Multi-Version Concurrency Control (MVCC) to eliminate lock contention.
Compute & Batch Modernization
Map and translate heavy Mainframe batch processing (JCL scheduled jobs) into modern stateless and restartable cloud patterns using Java Spring Batch Cloud Composer (Airflow) and GCP Dataflow.
Advise Java engineering teams on refactoring heavy legacy Stored Procedures (SQL PL) into scalable Spring Boot microservices.
Technical Leadership & Mentorship
Act as the central technical translator between legacy Mainframe engineers and modern cloud developers.
Establish FinOps best practices to ensure the newly migrated architecture is highly cost-optimized shifting the team from a fixed-MIPS mindset to cloud consumption models.
Design and oversee the Dual Run (Shadow Testing) strategy to guarantee absolute functional and financial equivalence before legacy deprecation.

Required Qualifications:

Experience:

10 years of experience in enterprise software engineering or architecture.
3 years of direct hands-on experience leading Heterogeneous Database Migrations (specifically from Mainframe DB2/zOS or Oracle to PostgreSQL).
The Legacy Pillar
Deep understanding of Mainframe architectures specifically IBM DB2 JCL and COBOL ecosystems.
Proven ability to analyze legacy code and extract undocumented business rules.
The Modern Pillar
Expert-level proficiency in PostgreSQL internals (query optimization autovacuum tuning connection pooling strategies like PgBouncer).
Expert-level proficiency in Google Cloud Platform (GCP) specifically around managed databases (Cloud SQL AlloyDB) networking and IAM security.
Strong architectural understanding of the modern Java ecosystem (Spring Boot Spring Batch JPA/Hibernate RESTful APIs).

Preferred Qualifications:

Certifications: Google Cloud Professional Cloud Architect or Professional Cloud Database Engineer.
Tooling: Experience with automated legacy-to-cloud refactoring toolsets (e.g. Google Cloud G4 Advanced or similar).

Skills Required:

Mainframe DB GCP

Skills Preferred:

Java COBOL

Experience Required:

Senior Specialist Exp.: 10 years in IT; 7 years in concentration

Experience Preferred:

Migration from Mainframe(COBOL / DB/2) to GCP (Java / Postgres DB)

Education Required:

Bachelors Degree

TekWissen Group is an equal opportunity employer supporting workforce diversity.

Overview: TekWissen is a global workforce management provider throughout India and many other countries in the world. The below client is a global company with shared ideals and a deep sense of family. From our earliest days as a pioneer of modern transportation we have sought to make the ...