Ousseynou Ba

Cloud-native SaaS Marketplace for Asset Managers and Asset Owners, facilitating ESG data centralization, reporting automation, and investment transparency enhancement.

Technical lead of a multidisciplinary team (React, Java, Python, DevOps, QA) for the design and deployment of a scalable platform, built around serverless microservices and an event-driven architecture, within an Agile Scrum framework (3-week sprints).

- Co-definition of the roadmap and architecture with the CTO, Product Manager, and Product Owner

- Management of the technical backlog and strategic alignment with business objectives

- Supervision of CI/CD, code quality, and delivery pipelines

- Design and implementation of ESG data pipelines with Apache Iceberg, Athena, DBT, Glue

- Enhancement of platform reliability, security, and performance

- Leading architecture reviews and mentoring developers

- Delivery of critical projects under tight constraints, restoring client trust

AWS (Lambda, API Gateway, Step Functions, S3 Iceberg, ECS, DynamoDB, RDS, KMS, IAM, SSM, CloudFormation, CDK)

Java 21, Spring, Quarkus, Python 3.13

React, Angular, Athena, DBT, PyIceberg, Pandas, Wrangler, CircleCI, CodeDeploy, SonarQube, Git, Maven

Context: Implementation of the "New Instant Payment Engine"

Key Achievements:

• Design and development of REST APIs and Kafka clients

• Automation of unit and functional tests (BDD JBehave)

• Management of certificate keystores and truststores

• Implementation of AKKA clusters for distributed processing

• Deployment of applications via Ansible and ARA (Jenkins, Sonar, Nexus)

• Analysis and resolution of bugs, support for the testing team

Technical Environment:

Products/Services: Bulk Manager, Instant Payment for CIB Spain

Expertise: Service design, development, DevOps

Methodologies: BDD, TDD, DDD, Event Sourcing

Technologies & Tools: Java8, Maven, AKKA, Spring, REST API, Kafka, MQ, Mongo DB, JBehave, Git, Gitlab, Docker, Jenkins, Sonar, Nexus, ARA, Ansible, Shell, Jira, Confluence

Context: Implementation of the new Hello Bank offering dedicated to freelancers, carried out end-to-end.

Key Achievements:

• Development of subscription, termination, and modification processes for new professional offers (HPF)

• Architecture and design of microservices according to DDD, BDD, and TDD approaches

• Design of a financial assistance service (BFM) for future freelancers

• Preparation and management of the BFM migration to IBM cloud (BNPP), "Cloud Ready" compliance

• Implementation of CI/CD pipelines for product delivery

• Strengthening microservice resilience through the application of "circuit breaker" patterns

• Contribution to integration and technical acceptance testing campaigns

Technical Environment:

Products/Services: Hello Bank Business, My Business Assistant Start

Expertise: Microservice architecture and design, cloud migration, DevOps

Methodologies: BDD, TDD, DDD, Event Sourcing, Scrum

Technologies & Tools: Java8, Maven, Spring Boot, Cucumber, LibertyCore, Git, Jira, Confluence

Complete development and redesign of the customer journey for online car insurance subscription.

- Redesign of the customer onboarding process for car insurance subscription

- Development of automated batch workflows for claims alert management

- Modernization of the information portal and optimization of the search engine for contracts and quotes

- Delivery of a customer appointment booking portal

Java 8, JavaScript, Web Center, Spring Batch, Struts2, Maven, SVN, ESB, SOAP, Oracle