Valentin Nicolas

Contributed to the development, modernization, and maintenance of core banking applications within a large-scale, high-availability monolithic architecture, processing millions of B2B and B2C transactions.

Key Responsibilities and Achievements

Backend & API Development:

Design, development, and optimization of robust REST APIs and backend services in Java, based on a proprietary internal framework, while strictly adhering to banking industry security and performance standards.

Monolith Modernization:

Refactoring and maintenance of a complex legacy codebase, with progressive preparation of components for a future transition to cloud and microservices.

Production Incident Management:

Active monitoring of production environments, diagnosis of critical bugs, and resolution of priority incidents under strict SLA constraints, ensuring 24/7 service continuity for banking users.

Technical Stack:

Java, Proprietary Enterprise Framework, REST APIs, SQL, Git, Production Monitoring Tools

Led several high-impact missions, ensuring the transition from legacy software modernization to state-of-the-art Cloud/DevOps architectures in highly regulated industries (healthcare and aeronautics).

Missions & Key Achievements

Legacy Modernization:

Participation in the migration of legacy enterprise applications from older Java versions to Java 11 and Spring Boot, significantly improving performance, security, and scalability.

DevOps & IaC Transition (Healthcare Project):

Design and implementation of Infrastructure as Code solutions and automation of server provisioning with Ansible, drastically reducing deployment times while ensuring strict compliance.

Full-Stack DevOps & Orchestration (In-Flight Entertainment Project):

Versatile DevOps Engineer role on a next-generation cloud-based in-flight entertainment platform, with end-to-end delivery management:

Development & Scripting (Go, Bash, ReactJS)

Cloud & Infrastructure (Kubernetes, Azure)

Currently participating in a large-scale migration of the enterprise information system to Salesforce for the Bank of Fukuoka, focusing on Cloud data engineering, modern Data Lake architecture, and the implementation of robust ETL pipelines on AWS.

Key Responsibilities and Achievements

ETL Pipeline Development:

Design, deployment, and automation of complex ETL pipelines in Python and advanced SQL, ensuring smooth data ingestion and transformation into the company's Data Lake.

Legacy to Salesforce Migration:

Mapping, cleaning, and migrating massive volumes of sensitive banking data from legacy on-premise systems to Salesforce, ensuring quality, compliance, and traceability.

Technical Stack:

AWS (S3, Glue, Athena, Batch, CloudWatch, QuickSight), Python, SQL