Yusvel Ibáñez Salas

I work as a backend developer at Endava, building modern, scalable, and secure microservices with Java and Spring Boot. I design and implement APIs, help migrate legacy systems to AWS, and follow best practices for testing, deployment, and cost control. I collaborate in a Scrum team to deliver new features every sprint.

Key Achievements & Responsibilities

• Cloud Migration & Architecture
  Designed two AWS cloud options (ECS Fargate and fully serverless) and led the choice of Fargate for hybrid on-premise integration.
  Migrated IBM Domino applications to AWS, creating a Java backend and an Angular frontend hosted via S3/CloudFront.
• Microservice Development
  Developed Java 17/Spring Boot 3 microservices in Docker, deployed on ECS Fargate.
  Integrated with Amazon DocumentDB, S3, and on-premise SOAP/REST services over VPN.
• Infrastructure as Code & CI/CD
  Built all infrastructure with AWS CDK (TypeScript) and automated deployments with GitHub Actions. Implemented CloudFormation, API Gateway, Cognito, DynamoDB, DocumentDB, OpenSearch, X-Ray, CloudWatch, and more for serverless projects.
• Testing & Monitoring
  Wrote unit tests (JUnit 5, Mockito; Jest, Cypress), integration tests for CDK, and load tests (coverage > 90 %).
  Configured CloudWatch Logs/Metrics, SNS alarms, and AWS X-Ray tracing for full observability.
• Agile Leadership
  Served as developer lead in a six-member Scrum team: story refinement, planning, demos, and retrospectives.
  Mentored colleagues on serverless patterns, AWS best practices, and automated testing strategies.

Technical Skills

• Languages & Frameworks: Java 17, Spring Boot 3; TypeScript, Angular 17; React.js, React Native; NodeJS.
• AWS & DevOps: ECS Fargate, Lambda, DocumentDB, DynamoDB, S3, CloudFront, VPC, ALB, API Gateway, Cognito, IAM, Route 53, CloudFormation/CDK, GitHub Actions
• Testing: JUnit 5, Mockito, Jest, Cypress.
• Practices: Microservice design, “Strangler” migration, least-privilege security, cost optimization

Payment Solutions Developer | Node.js | ERP Integration Specialist

Results-driven developer with hands-on experience building and deploying payment broker integrations within the PowerStreet Solution suite. Skilled at designing scalable, web‑based multi‑user systems and ensuring seamless ERP connectivity for diverse payment methods.

• End‑to‑End Payment Integration: Architected and implemented a payment broker service on Node.js, enabling clients to securely process credit cards, digital wallets, and ACH transactions directly through their ERP.
• System Design & Scalability: Designed large‑scale, multi‑tenant web applications with Vue.js front‑ends and SQL Server/MongoDB back‑ends, ensuring high availability and load‑balanced performance.
• Release Management & CI/CD: Led release cycles, coordinated deployments to staging and production, and maintained version control with SVN; introduced automated build and test scripts to reduce release lead time by 30%.
• Technical Documentation & Standards: Authored comprehensive architecture blueprints, API specifications, and release notes to streamline development handoffs and regulatory audits.
• Onboarding & Knowledge Transfer: Delivered technical onboarding sessions and mentored new developers on system architecture, coding best practices, and under‑utilized technologies, accelerating ramp‑up time by 25%.
• Cross‑Functional Collaboration: Worked closely with QA, DevOps, and business stakeholders to define requirements, troubleshoot issues, and deliver client‑approved releases on schedule.

Tech Stack: Node.js, Vue.js, SQL Server, MongoDB, SVN, REST APIs, CI/CD Pipelines.

This profile underscores my ability to drive payment integrations, optimize deployment workflows, and foster team growth—key strengths for roles in fintech, ERP modernization, and cloud‑native application development.

Back-End Developer | Product Distribution & Compliance System

Designed and optimized database solutions for a mission-critical platform managing product sales, distribution, and transport administration across multiple regions—ensuring strict adherence to government regulations and supplier–customer SLAs.

• Data Modeling & Query Performance
  Authored and tuned complex PostgreSQL queries, functions, and triggers to support high-volume transactions and enforce business rules at the database layer.
  Improved query performance by 40% through index optimization and SQL refactoring, reducing end-to-end response times for key reporting endpoints.
• Regulatory Compliance & Data Integrity
  Implemented database triggers and stored procedures to validate data against evolving regulatory requirements, eliminating manual reconciliation and reducing data errors by 95%.
  Collaborated with product owners and QA to translate legal and operational policies into automated checks, ensuring audit-ready data at all times.
• Back-End API & Java MVC Client
  Developed and maintained a secure Java-based RESTful API layer atop SQL Server and PostgreSQL, exposing transactional endpoints for order management and distribution workflows.
  Implemented a Java MVC client application (using JavaFX/Swing) that consumed these APIs, employing a clear separation of Model, View, and Controller to deliver real-time inventory and logistics management.
• Cross-Functional Collaboration & Best Practices
  Participated in Agile ceremonies—story grooming, sprint planning, demos, and retrospectives—driving continuous improvement in architecture and delivery.
  Championed database coding standards and code review processes, mentoring junior developers on SQL best practices and maintainable schema design.

Technology Stack: Java · PostgreSQL · SQL Server · PL/pgSQL · REST APIs · Java MVC (JavaFX/Swing) · Agile/Scrum

Back-End Developer | Radio Station Website

Contributed to the development and ongoing maintenance of a high-traffic radio station website, delivering new features and ensuring platform stability through the full software development lifecycle.

• Agile Collaboration: Participated in sprint planning, daily stand-ups and retrospectives; refined user stories and estimated tasks to align deliverables with stakeholder priorities.
• Requirements Analysis: Gathered and vetted business and technical requirements, translating them into clear acceptance criteria and working prototypes.
• Object-Oriented Design & Implementation: Architected and built modular PHP applications using MVC web frameworks, adhering to SOLID principles for maintainability and extensibility.
• Full-Cycle Delivery: Executed end-to-end development—from UML-driven modeling and coding to PHP Unit testing, debugging, and detailed technical documentation.
• Performance & Reliability: Optimized MySQL schemas and queries to improve page load times and ensure data consistency under peak traffic loads.
• Code Quality & Best Practices: Enforced coding standards via peer code reviews, integrated automated linting and test suites, and maintained version control with Git.

Tech Stack: PHP · MVC Frameworks · MySQL · PHPUnit · Git · Agile/Scrum