Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I’m Patrick, a Senior Java React Developer with 12+ years of experience designing and building scalable, high-performance web applications and distributed systems. I enjoy bridging backend and frontend work to create robust platforms that power financial services and enterprise trading. I’m comfortable in cloud-native environments (AWS, GCP), containerized deployments with Docker and Kubernetes, and modern CI/CD pipelines. I believe in clean architecture, test-driven development, and mentoring teams to deliver value quickly.…I’m Patrick, a Senior Java React Developer with 12+ years of experience designing and building scalable, high-performance web applications and distributed systems. I enjoy bridging backend and frontend work to create robust platforms that power financial services and enterprise trading. I’m comfortable in cloud-native environments (AWS, GCP), containerized deployments with Docker and Kubernetes, and modern CI/CD pipelines. I believe in clean architecture, test-driven development, and mentoring teams to deliver value quickly.

Patrick Diagne

Web Developer, Full Stack Developer, Back-End Developer, +3





I’m Patrick, a Senior Java React Developer with 12+ years of experience designing and building scalable, high-performance web applications and distributed systems. I enjoy bridging backend and frontend work to create robust platforms that power financial services and enterprise trading. I’m comfortable in cloud-native environments (AWS, GCP), containerized deployments with Docker and Kubernetes, and modern CI/CD pipelines. I believe in clean architecture, test-driven development, and mentoring teams to deliver value quickly.…I’m Patrick, a Senior Java React Developer with 12+ years of experience designing and building scalable, high-performance web applications and distributed systems. I enjoy bridging backend and frontend work to create robust platforms that power financial services and enterprise trading. I’m comfortable in cloud-native environments (AWS, GCP), containerized deployments with Docker and Kubernetes, and modern CI/CD pipelines. I believe in clean architecture, test-driven development, and mentoring teams to deliver value quickly.

Available to hire

I’m Patrick, a Senior Java React Developer with 12+ years of experience designing and building scalable, high-performance web applications and distributed systems. I enjoy bridging backend and frontend work to create robust platforms that power financial services and enterprise trading.

I’m comfortable in cloud-native environments (AWS, GCP), containerized deployments with Docker and Kubernetes, and modern CI/CD pipelines. I believe in clean architecture, test-driven development, and mentoring teams to deliver value quickly.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Technical Lead at CACEIS

December 1, 2022 - January 1, 2026

Led architecture and development of Java/Spring Boot microservices for repo and securities lending operations. Designed high-performance REST APIs integrated with internal trading and risk systems. Coordinated on-site development team, managed code reviews, and enforced best practices. Optimized SQL queries and improved transaction processing performance for high-volume financial data. Implemented secure authentication and role-based access control (RBAC). Worked closely with business stakeholders to translate repo desk requirements into technical solutions.

Technical Team Leader at Société Générale

January 1, 2017 - November 1, 2022

Technical leader of the ALM GABI web adjustment module. Designed and maintained enterprise Java/J2EE web applications supporting Asset & Liability Management. Led backend development using Spring, Hibernate, and Oracle DB. Developed web interfaces and reporting modules for financial adjustments and risk calculations. Improved system stability and reduced production incidents through refactoring and performance tuning. Managed Agile ceremonies and mentored junior and mid-level developers.

Java/J2EE Developer at Carsat

January 1, 2014 - December 1, 2016

Developed and maintained Java/J2EE applications for public sector services. Built backend modules using Spring MVC, Hibernate, and REST services. Integrated Oracle and PostgreSQL databases. Participated in full software development lifecycle from design to deployment. Ensured compliance with public administration IT standards.

Java/J2EE Developer at Paris Region

January 1, 2008 - December 1, 2013

Developed enterprise Java applications using J2EE, JSP, Servlets, and EJB. Worked on large-scale administrative and financial systems. Implemented MVC architecture and optimized legacy systems. Collaborated with cross-functional teams in structured enterprise environments.

Technical Lead at CACEIS, Luxembourg

December 1, 2022 - January 1, 2026

Led full-stack development with React.js frontend dashboards for repo trading and securities lending operations. Developed Java Spring Boot microservices for trade lifecycle, transaction processing, and risk calculations. Designed REST and GraphQL APIs consumed by React components with Redux for state management. Implemented secure authentication and RBAC integrated across frontend and backend. Built real-time monitoring dashboards for trading activities using React Query and WebSocket streaming. Mentored frontend developers on React component architecture, TypeScript best practices, and testing with Cypress. Optimized PostgreSQL queries and implemented caching with Redis for low-latency dashboard updates.

Technical Team Leader at Société Générale – Luxembourg

January 1, 2017 - November 1, 2022

Designed and implemented Vue.js SPA dashboards for financial adjustment workflows and reporting. Integrated Vue components with Spring Boot and Hibernate backend services via REST APIs. Implemented state management using Vuex and optimized dynamic reporting tables. Refactored legacy JSP pages into Vue.js SPA, improving UI performance and maintainability. Coordinated Agile development and mentored developers on modern frontend frameworks and integration with Java backends. Implemented real-time alerts and notifications using WebSocket and event-driven backend services.

Java/J2EE Developer at Carsat Normandie – Normandie, France

January 1, 2014 - December 1, 2016

Developed backend modules using Spring MVC and Hibernate for pension eligibility and record management. Built REST services for frontend consumption (legacy JSP pages). Integrated Oracle and PostgreSQL databases and optimized complex queries for large datasets. Participated in full SDLC, from requirements gathering to deployment and support. Ensured secure access to citizen data and compliance with public sector IT standards.

Java/J2EE Developer at Paris Region, France

January 1, 2008 - December 1, 2013

Developed enterprise J2EE applications using Servlets, JSP and EJB. Implemented MVC architecture for financial and administrative modules. Optimized legacy systems for performance and maintainability. Collaborated with cross-functional teams including analysts, QA and project managers.