Engineering Leader & Full-Stack Architect,
bridging technical execution and business strategy
across fintech and healthcare.

Java

16 years in and Java still doesn't judge me for my checked exceptions. We've been through a lot together.

Technical Lead & AWS Architect

VISHNU
MANOHAR

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About

Technical Lead with 16+ years architecting and building full-stack Java systems across fintech and healthcare.

16+ years architecting full-stack Java systems across fintech & healthcare — building teams, modernizing legacy platforms, and shipping cloud-native microservices on AWS.

01

Cloud Architecture

Designing cloud-native microservices on AWS — Lambda, API Gateway, Cognito, S3, EC2 — and lifting legacy platforms onto Red Hat OpenShift and Kubernetes.

02

Team Leadership

Led cross-functional teams of 10+ in a VP-level role at Citi, and founded and scaled a healthcare startup's engineering team end-to-end from zero.

03

Full-Stack Engineering

Deep hands-on expertise across Java, Spring, Angular, and modern data stores — building resilient systems for high-volume financial transaction loads.

Highlights

Career Highlights

Skills

Skills & Proficiency

AWS (EC2, Lambda, API Gateway, S3, Cognito)95%
Red Hat OpenShift88%
Docker85%
Kubernetes80%
Java96%
REST & WebSocket APIs90%
JSON85%
HTML/CSS75%
Oracle SQL90%
MySQL88%
DynamoDB85%
MongoDB82%
Elasticsearch80%
Spring Boot / Spring Core95%
Spring Security / Spring Data88%
Angular88%
Git92%
Jenkins / TeamCity85%
Maven / Gradle85%
Harness80%
Work

Where I've Built

2024 — Current
05/2024 – Current

Citi Bank / Virtusa

Technical Lead

Leading the migration of bond settlement systems from legacy Java/SQL to a resilient microservices platform.

  • Drove architectural evolution of bond settlement systems, leading the transition from legacy Java and SQL stored procedures to a resilient microservices platform — improving scalability, fault tolerance, and long-term maintainability.
  • Partnered with Business Analysts and cross-functional stakeholders to translate complex settlement workflows into well-structured technical solutions aligned with market and regulatory requirements.
  • Architected inter-system communication patterns for reliable settlement data exchange across upstream and downstream platforms, ensuring accurate and consistent trade lifecycle processing.
  • Built and optimized high-performance backend services using Spring Framework and Oracle DB, maintaining data integrity and stability under high-volume financial transaction loads.
  • Delivered key business enhancements including a new LATAM settlement flow, managed CI/CD pipelines via Harness to OpenShift, and ensured controlled production releases.
  • Acted as the primary L3 escalation point, coordinating cross-team efforts to resolve critical production issues and maintain platform reliability and operational continuity.
01/2024 – 05/2024

SwitchLane

Technical Lead

Decomposed monolithic applications into serverless microservices on AWS Lambda and API Gateway.

  • Decomposed monolithic applications into independently deployable microservices, crafting Python-driven Lambda functions to handle user authorization, file uploads, and report generation.
  • Designed and secured JSON-based REST APIs through API Gateway, leveraging DynamoDB and Lambda to enforce access control and protect application endpoints.
  • Rearchitected and lifted legacy Spring and Java systems onto EC2, refactoring shared application logic into cloud-native serverless components across Lambda and S3.

AWS S3, SQS, EC2, Lambda, API Gateway, AWS Deploy, Java, Spring, DynamoDB, Git

2020 — 2024
06/2021 – 01/2024

Citi Bank India

Vice President

Managed and mentored engineering teams while re-architecting a legacy Spring app onto OpenShift.

  • Collaborated continuously with business and product teams to define project scope, set clear quarterly objectives, and establish progressive delivery targets aligned with organizational priorities.
  • Managed and mentored a team of engineers, fostering a high-performance culture through clear direction, motivation, and accountability — ensuring quality delivery across all project milestones.
  • As Scrum Master, bridged the gap between business and engineering by translating complex requirements into technical scope, building work schedules, and driving end-to-end project delivery.
  • Re-architected a legacy Spring application onto OpenShift cloud infrastructure, leveraging Docker containerization and microservices design patterns to significantly improve scalability, reliability, and performance.
  • Modernized the frontend architecture by implementing micro front-end services in Angular, resulting in a more modular, maintainable, and independently deployable UI layer.
07/2020 – 06/2021

Fidelity Investments / Tek Systems

Cloud Specialist

Automated infrastructure provisioning with CloudFormation and built a search feature using AEM Lucene.

  • Automated infrastructure provisioning using AWS CloudFormation templates and managed content storage pipelines across S3 buckets with Lambda functions, reducing manual overhead and improving deployment consistency.
  • Architected and delivered a robust search feature using AEM Lucene, applying advanced search indexing concepts to enable fast, relevant content discovery across the application.
  • Partnered with multiple content provider teams to integrate and ingest article content into a unified search experience, achieving seamless cross-project search functionality.
2010 — 2020
09/2015 – 07/2020

Medspeer Healthcare Technologies

Self-Entrepreneur / Founder

Founded and led a 5-person team building a social platform for healthcare professionals on AWS.

  • Started product development in 2015 and registered the company in 2018 as a streamlining process.
  • Conducted pilot user interviews and feedback sessions to shape product direction, translating real customer expectations into a feature-rich application roadmap.
  • Established delivery milestones and drove continuous releases of enhanced functionality, iteratively improving the product and elevating the overall customer experience.
  • Built and led a high-performing engineering team from the ground up, establishing development standards, fostering a culture of innovation, and instilling strong engineering processes.
  • Designed and architected a scalable, secure microservices application using Spring MVC and Angular, optimizing data performance with MongoDB and powering intelligent search with Elasticsearch.
08/2014 – 09/2015

Larsen & Toubro Infotech

Senior Software Engineer

Developed full-stack features for Caterpillar using Angular, Spring, and MySQL.

  • Developed full-stack features for Caterpillar using Angular on the frontend, Spring on the backend, and MySQL for data persistence, delivering end-to-end functionality across the application.
  • Implemented and maintained Jenkins CI pipelines for automated testing, quality assurance, and branch management, ensuring code stability and consistent delivery standards.
10/2010 – 08/2014

Cognizant Technology Solutions

Programmer Analyst

Built proof-of-concept apps across IoT, Data Science, RPA, and ML in the Emerging Business Accelerator group.

  • Worked within the Emerging Business Accelerator group, evaluating client use cases across IoT, Data Science, RPA, and Machine Learning to develop proof-of-concept applications, and conducted customer interviews and floor walks to shape product roadmaps.
  • Built a document search and indexing solution for MetLife by integrating SharePoint with Solr via ManifoldCF, and designed the front-end browsing and search interface.
  • Developed a general-purpose text mining API capable of converting any document format to plain text with minimal processing time, alongside optimized database queries, procedures, and functions for complex data retrieval.
Prior

Infosys Technologies

Systems Trainee

Entry point into the software industry.

Education

Academic Background

2009

Bachelor of Technology in Biotechnology

Anna University, Chennai

Contact

Let's build
something together.

Open to conversations on technical leadership, AWS architecture, and full-stack Java engineering.