Jean De Dieu Twagirumukiza

● Developed microservices for loyalty membership programs using Java and Spring Boot, AWS SDK libraries.

● Integrated more than one SQL server database and MongoDB database in a single microservice to retrieve required data, calculate reward points for reward member purchases, and store those reward points in the data store.

● Optimized loyalty microservices using parallel calls and async

● Implemented feature flag in rewards API using Launch Darkly SDK

● Re-engineered two-way text microservices’ loggings

● Contributed to microservice architecture and modeling using UML designs

● Implemented POC for MongoDB and Launch Darkly integration and provided documentation and guidance on how to implement that in loyalty microservices applications.

● Conducted analysis on microservices performance using Dynatrace and recommended appropriate solutions that increased scalability and performance of loyalty microservice application.

● Integrated AWS Secret Manager to manage all credentials in a loyalty microservices application

● Contributed to setting up docker and Kubernetes files for image and CICD pipeline

● Provided knowledge transfer to other Java Developers in the Rite Aid software development team

● Produced documentation for Rewards API

● Participated in different all agile ceremonies and meetings.

● Developed web services and web services integration for Customer Relation Management using Spring boot, Spring Cloud, and MongoDB under microservice architectures.

● Validated saved payment method in payment service by integrating PayPal API and other local bank APIs

● Developed communication preference APIs that promote going paperless to the patients.

● Developed web services (APIs) for drug benefit services.

● Implemented Kafka consumer and applied proxy design, facade, and builder patterns.

● Implemented multi-factor authentication of billing backend system.

● Participated in setting local, development, and production environment for project.

● Participated in releasing new features in different environments including production.

● Built docker images for different web services.

● Wrote configuration YAML files for different environments’ deployment configurations and API specifications.

● Implemented front end using React JS library and managed states using Redux

● Produced various project documentation in the confluence pages.

● Participate in support in production server daily tickets.

● Participated in different scrum meetings.

● Collaborated with other engineers and business team to meet business requirements, Supported, mentored, and onboarded new engineers with flexibility.

● Developing web services and web services integration for health insurance billing services using Spring boot, spring cloud and MongoDB under microservice architectures.

● Developed web service requests (APIs) for billing system mapping to client system integration using spring cloud and Apache Kafka.

● Implemented GraphQL APIs for different brokers’ requirements.

● Implemented observer design and factory method design patterns.

● Implemented security features of the billing system with Oauth2 framework.

● Participated in Kafka and zookeepers’ setup, topics, and broker creation.

● Developed producer APIs with Spring cloud Kafka.

● Implemented APIs and Microservices for core client system extension projects.

● Participated in sprint planning and created Jira tickets for sprint backlog.

● Daily monitoring, support of production systems and debugging.

● Participated in software architecture styles and sprint planning meetings.

● Prepared SQL Scripts for legacy system

● Partnered with vendors and software architects to ensure quick delivery and high quality of developed software products.

● Written different SQL scripts including views and stored procedures in SQL Server and Oracle databases

● Documented the project APIs specifications, input file layout, DSL, and other business rules in confluence.

● Documented release manual as guidelines for releasing in production.

● Worked with DevOps Engineers to create CICD pipeline using AWS code Pipeline and AWS code Build

● Identified and analyzed software requirements with stakeholder and end users.

● Designed and implemented databases with SQL server and MySQL.

● Implemented RESTful and Microservices for backend development of APIs.

● Developed unit and acceptance tests for the SIS backend and front end.

● Implemented different design patterns on the backend to promote best practices of robust and scalable software products.

● Implemented multithreading with the executor framework.

● Implemented different integration with other partners ‘systems.

● Designed ERD on the persistence layer, entity class mapping using Hibernate (ORAM)

● Configured docker, and created docker files, images, and containers for enterprise application containerization.

● Coordinated and contributed significantly to spring planning and delivered stakeholder demos.

● Initiated, coordinated, and implemented the backend modules for Learning Management System Web Application.

● Configured performing tuning, database indexing, DR backup, clustering, and read replica

● Designed a data warehouse and created web services as per report requirements of the Central Bank of Rwanda.

● Implemented adapter and facade design patterns during the web service development.

● Mapped entity classes to a relational database using hibernate.

● Implemented multithreading with the executor framework.

● Developed messaging producer APIs and developed different Restful endpoints for the consuming apps.

● Developed integration of core bank system with a system of the central bank using Kafka

● Developed backend for the in-house project to administer data from health beneficiary partners.

● Led project implementation by ensuring compliance with organizational guidelines and requirements.

● Created and managed a comprehensive implementation plan.

● Facilitated project implementation while maintaining organization guidelines and requirements.

● Analyzed the project specifications, engaged different stakeholders, and gathered the project requirements.

● Implemented database modeling for asset management applications.

● Developed different backend Restful APIs and Microservices architecture.

● Implemented different integrations with donor systems.

● Implemented and written different automated unit testing and continuous deployment.

● Developed attractive user interfaces for business enterprise application software.

● Implemented adapter and factory method design patterns.

● Mapped entity classes to a relational database using hibernate.

● Implemented multithreading with the executor framework.

● Developed Rest API and consumed Rest API

● Documented Rest API using Swagger.

● Implemented monitoring features.

● Deployed four spring applications and maintained them on AWS.

● Designed and implemented different relational database objects including SQL procedures, triggers, views and indexing

● Configured Database Backup, data encryption, disaster recovery, read replica, cashing mechanism, and database performance tuning.