Juan José Luis García
@juanjosluisgarca
Senior Software Engineer and Team Lead specializing in .NET, React, and cloud-native microservices for regulated fintech.
IrelandWhat I'm looking for
I’m a Senior Software Engineer & Team Lead with 20+ years delivering production-grade systems in Regulated Fintech and Banking environments. My core expertise is Full Stack .NET (C#) and React (Next.js/TypeScript) architectures, with a strong delivery-first mindset shaped by over a decade as an independent contractor.
I specialize in migrating legacy enterprise systems to modern cloud-native stacks (Azure/AWS), combining hands-on coding with pragmatic technical leadership. I’m comfortable owning complex features end-to-end—architecture and implementation, testing, CI/CD, and release—while keeping engineering standards high through mentoring and documentation.
My current focus is TypeScript-first, product-driven development using NestJS, Next.js, GraphQL, Prisma, and Nx. Most recently, I led a team of 5 engineers, championed an Nx monorepo, established application-wide OAuth workflows, and improved delivery velocity through automated backend testing and observability-ready infrastructure.
Experience
Work history, roles, and key accomplishments
Team Lead - Full-Stack
Infinity Pay Tech
Sep 2025 - Present (8 months)
Led a team of 5 engineers and coordinated delivery of a SaaS payments and compliance platform across EU/UK markets. Championed an Nx monorepo, implemented an end-to-end OAuth workflow in NestJS, and delivered NestJS/Next.js features with automated backend testing.
Co-Founder & Backend Lead
Independent Side Project
Apr 2021 - Present (5 years 1 month)
Co-founded a multi-tenant SaaS platform for regulated industries, designing and implementing Go-based REST and gRPC backends. Built an event-driven microservice architecture with Kafka and databases, integrated Stripe billing and Entra ID SSO, and prepared Kubernetes-ready deployments.
Developed AI integration for the Fidelity Teams agent and mobile application used by global clients. Wrote testable TypeScript and Angular code with Ionic, performed peer reviews, and delivered features through Scrum ceremonies.
Managed migration of internal projects to .NET 8 and built a new report automation feature. Delivered testable code with merge requests for peer code review and proposed technical solutions for the team.
Senior Developer
Central Bank of Ireland
Apr 2023 - Jan 2024 (9 months)
Developed an ESMA regulatory compliance portal enabling secure data sharing with the ECB. Translated Miro designs into Angular components, mentored staff, and managed multi-environment deployments via Azure DevOps.
Modernized internal tools and booking systems by rewriting legacy ASP.NET Web Forms into .NET Core and Angular 16. Integrated Entra ID SSO and built Azure DevOps pipelines for multi-environment deployments.
Senior Developer
An Bord Pleanála
Feb 2022 - Jul 2022 (5 months)
Built an internal tool to record meetings, manage sign-offs, and track attendance using .NET Core and Angular. Implemented features end-to-end and supported cross-environment deployments via Azure DevOps and Azure Pipelines.
Developed the NTA Tax Saver initiative for the NTA webpage and optimized backend response times using Entity Framework Core. Delivered improvements focused on reducing latency and improving performance.
Education
Degrees, certifications, and relevant coursework
Juan José hasn't added their education
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Tech stack
Software and tools used professionally
Availability
Location
IrelandAuthorized to work in
Job categories
Skills
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