FinTech

Digital Transformation for Banking

Leading Financial Institution

Duration

18 months

Team Size

25+ engineers

Completed

October 2025

Project Overview

Understanding the scope and objectives

Led the complete digital transformation of a leading global bank, modernizing their core banking infrastructure from legacy mainframe systems to a cloud-native microservices architecture. This initiative enabled real-time transaction processing, improved security posture, and positioned the organization for future innovation.

60%

Cost Reduction

99.99%

Uptime Achieved

10x

Faster Processing

Significant

Annual Savings

Services Provided

Cloud MigrationMicroservices ArchitectureDevOpsSecurityData Engineering

Technologies Used

AWSKubernetesJavaPostgreSQLKafkaRedisTerraformJenkins

Impact Summary

This project delivered measurable business value, exceeding client expectations and establishing a foundation for continued growth and innovation.

The Challenge

Understanding the Problem

Every successful project starts with a deep understanding of the challenges at hand.

The client was running critical banking operations on 30-year-old mainframe systems that were becoming increasingly difficult to maintain. The legacy infrastructure limited their ability to innovate, resulted in slow transaction processing times, and created significant operational risks due to the aging technology stack.

Challenge 1

Modernize a complex legacy system processing 5 million daily transactions without service disruption

Challenge 2

Ensure security and regulatory requirements throughout the migration

Challenge 3

Retrain existing IT staff while maintaining operational excellence during transition

Challenge 4

Integrate with existing systems and third-party providers seamlessly

Our Solution

How We Solved It

Our team developed a comprehensive solution tailored to the client's unique needs.

Our Approach

We adopted a phased migration approach using the strangler fig pattern, gradually replacing legacy components while maintaining system stability. Our team implemented comprehensive automated testing, established robust monitoring, and created detailed runbooks for every phase of the migration.

Cloud-Native Architecture

Designed and implemented a microservices architecture on AWS with Kubernetes orchestration for scalability and resilience.

Zero-Downtime Migration

Implemented a dual-write strategy with real-time data synchronization to ensure zero service disruption during migration.

Automated Testing Pipeline

Built comprehensive CI/CD pipelines with automated security scanning, performance testing, and compliance validation.

Real-Time Data Platform

Deployed Kafka-based event streaming for real-time transaction processing and analytics capabilities.

Security Hardening

Implemented zero-trust security architecture with encryption, IAM, and comprehensive audit logging.

Staff Enablement

Delivered extensive training programs to upskill IT professionals on modern cloud technologies.

Implementation Process

Phase 1

Discovery & Assessment

Phase 2

Architecture Design

Phase 3

Phased Migration

Phase 4

Optimization & Handover

The Results

Measurable Impact

Our solutions delivered quantifiable business value that exceeded expectations.

60%

Cost Reduction

Reduction in infrastructure and maintenance costs

99.99%

System Uptime

Achieved carrier-grade reliability

10x

Transaction Speed

Faster processing times for customers

70%

Time to Market

Faster feature deployment cycles

Key Business Outcomes

Enabled real-time transaction processing for 15 million customers globally

Reduced operational risk through modern, maintainable infrastructure

Positioned the organization for AI/ML integration and future innovation

Achieved full regulatory compliance with improved audit capabilities

Created a foundation for open banking API integrations

Improved developer productivity by 40% with modern tooling

"TechnischWerk delivered what many said was impossible—a complete transformation of our core banking infrastructure with zero downtime. Their technical expertise and commitment to our success exceeded every expectation."

Vikram Mehta

Chief Technology Officer

Leading Financial Institution