Christian Esteban Retana Mora

Fintech Industry Company

Project: MVP LendOS

Description: LendOS is a fintech web application that has reinvented the core-system paradigm for commercial lending using DLT technology, microservices and cloud computing

• Delivered an MVP for LendOS by automating 85% of the environment deployment and managing multi-tenant setups using GitOps, IaC (Terraform), Kubernetes, and AWS services
• Boosted service efficiency by 90% through the development of a lightweight Node.js microservice for real-time applications
• Reduced bug occurrence by 35% by implementing automated integration tests and minimizing post-release patches
• Refactored and developed 80% of the application using React, Redux, TypeScript, NestJS, and DAML, achieving client presentation readiness
• Collaborated with cross-functional teams to ensure high-quality design and delivery of microservices and APIs
• LendOS is a fintech that has reinvented the core-system paradigm for commercial lending using DLT technology, microservices and cloud computing
• Technologies: Nodejs, Typescript, Javascript, React, NestJS, Kafka, Blockchain DLT - Daml, ArgoCD, Terraform, GithubActions, Kubernetes, AWS SQS, CloudWatch, EKS, ECR, GitOps, PostgreSQL, Redis, GraphQL, React Testing Library, Playright, Cypress, Jest, Prometheus, Grafana

Health Industry Company

Project: Medicare App and Quiz App

Description: Medicare app enabling informed healthcare decisions for seniors.

• Migrated legacy Ruby on Rails endpoints to a modern microservices architecture using Node.js, TypeScript, and AWS Step Functions
• Improved app performance by 15% through optimized GraphQL queries and reusable React components
• Documented 12+ legacy apps, enhancing knowledge transfer and reducing onboarding time
• Ensured 98% uptime by resolving 5+ production issues monthly during on-call rotations
• Health Industry Company
• Technologies: NodeJS, Typescript, RoR, AWS, GraphQL, React, Jest, MySQL, PostgreSQL

Retail Industry Company

Project: ExtraSpace Storage Microservices

Description: Event-driven backend application to manage services across retail locations.

• Transitioned a .NET monolith SMS/Email notification system to a Node.js microservices architecture, improving deployment efficiency by 20%
• Managed 10+ serverless workflows using AWS Step Functions, enhancing message processing efficiency
• Led technical interviews and coached over 50 candidates, accelerating hiring for critical positions
• Retail
• Technologies: NodeJS, Typescript, AWS SQS, SNS, Lambdas, Step Functions, DynamoDB and MySQL, React Testing Library, Jest, Cypress

Fintech/Trading Industry Company

Project: Account Opening Process

Description: Trading platform onboarding app enabling customer account registration and

engagement.

• Designed and developed three high-impact MERN applications for cashiering, crypto waitlist, and account onboarding, driving thousands of user engagements
• Improved CI/CD processes by implementing serverless architecture, increasing efficiency by 20%
• Conducted 35+ code reviews and pair programming sessions, elevating team coding standards
• Enhanced existing applications with six new features using React, Redux, and Loopback
• Fintech/Trading
• Technologies: React, Redux, Loopback, NodeJS, GraphQL, Gitlab, Jenkins, Teamcity, AWS

Fintech Industry Company

Project: MDM, Workflows, Conflict Clearance

Description: Fintech applications for compliance, GDPR, and anti-money laundering in investment banking.

• Developed reusable microservices and components for finance applications, achieving 80% code coverage with TDD practices
• Led development of key features for financial systems, enhancing operational efficiency in MDM, workflows, and conflict clearance
• Mentored six mid and junior engineers, boosting team productivity and expertise
• Ensured GDPR compliance and anti-money laundering regulation adherence for investment banking projects
• Fintech
• Technologies: NodeJS, Typescript, Javascript, C#, .Net, MVC, WebAPI, Gitlab, Jenkins, Teamcity, AWS