Senior Backend Engineer, Automated QA

PROFESSIONAL SUMMARY

Senior Backend Engineer with 10+ years of experience designing, building, and operating production-grade backend systems and microservices. Deep expertise in Java, Spring Boot, PostgreSQL schema design and SQL query tuning, RESTful APIs, and distributed systems. Recognized for adopting an AI-first engineering workflow (leveraging Claude, Cursor, and GitHub Copilot for rapid prototyping, Spring Boot service implementation, DB migrations, and refactoring) while maintaining strict accountability for code correctness, security, and maintainability. Proven track record in B2B SaaS, payment systems, and logistics/e-commerce platforms. Located in LATAM with full, consistent overlap with U.S. working hours. CORE TECHNICAL SKILLS

● Core Backend: Java, Kotlin, Spring Boot, Spring MVC, JPA / Hibernate, Microservices Architecture, RESTful APIs, Node.js.

● Databases & Data: PostgreSQL (Schema Design, Query Optimization, Indexing, Migrations), SQL, Redis, Oracle, MySQL, MongoDB, DynamoDB.

● AI-First Engineering: Claude, Claude Code, Cursor, GitHub Copilot (AI-assisted implementation, test generation, log analysis, refactoring).

● Cloud & DevOps: Google Cloud Platform (GCP - Cloud SQL, GKE, Cloud Run), AWS (Lambda, API Gateway, S3, SQS/SNS), Docker, Terraform, CI/CD (GitHub Actions, Cloud Build).

● Architecture & Patterns: Microservices Refactoring, Event-Driven Architecture, Distributed Data, SOLID Principles, Clean Code.

● Frontend & Integrations (Nice-to-Have): React, Payment Systems (Fintech / Wallets), Messaging

(Twilio/SendGrid APIs), REST/GraphQL APIs.

PROFESSIONAL EXPERIENCE

SENIOR BACKEND / FULLSTACK ENGINEER

Truelogic Remote (LATAM) 2020 – Present

(Projects: Xometry Pay & SamsungNext)

● Core Backend & Microservices: Designed, built, and maintained production backend services for a digital wallet and payment platform supporting high-volume financial transactions.

● AI-Assisted Workflow: Integrated AI tools (Claude, Cursor, GitHub Copilot) into daily development workflows to accelerate Spring Boot service implementation, generate comprehensive test suites, write database migration scripts, and perform root-cause log analysis.

● PostgreSQL & Performance: Designed relational database schemas in PostgreSQL; authored and optimized complex SQL queries and index strategies to eliminate bottlenecks under heavy transaction loads.

● API & System Design: Developed scalable RESTful and GraphQL APIs for seamless integration between core backend microservices, third-party payment providers, and frontend applications.

● Reliability & Testing: Authored automated unit and integration tests (JUnit, Jest) to ensure zero regression during continuous refactoring and feature additions.

● Cloud & DevOps: Managed infrastructure and deployments utilizing Docker, Terraform, GitHub Actions, and cloud services (AWS / GCP components).

SENIOR JAVA DEVELOPER

Avenue Code (Client: Backcountry) Remote 2019 – 2020

● Spring Boot Microservices: Designed and built Java and Spring Boot microservices from scratch to handle enterprise e-commerce inventory, pricing, and order data pipelines.

● Refactoring & Reliability: Refactored legacy monolithic backend modules into distributed microservices, improving system maintainability, throughput, and error recovery.

● API Integration: Integrated internal core services with external supply chain and logistics APIs. Erwin Bastardo

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● Mentorship & Quality: Conducted code reviews, enforced clean code/SOLID principles, and mentored junior engineers on technical design and Spring Boot best practices. SENIOR SOFTWARE ENGINEER

VISEO IBERIA La Coruña, Spain / Remote 2017 – 2020

● Financial & Payment Systems: Built and maintained full-stack backend services for an online banking platform handling billing, loans, account management, and domestic/international money transfers.

● Database Tuning & Optimization: Handled schema migrations and tuned high-volume PostgreSQL queries, maintaining system throughput and low latency during peak payment windows.

● Distributed Architecture: Worked within microservice architectures to decouple service dependencies and ensure high availability across banking modules. SOFTWARE ENGINEER

VERIZON SA (Newtech SA) Santo Domingo, Dominican Republic 2012 – 2017

● Developed and maintained enterprise client portfolio management applications using Java, Spring, JPA, and Oracle SQL databases.

● Refactored core modules, modernized legacy systems, and collaborated with cross-functional teams

(Product, QA) to ship reliable features.

EDUCATION & CERTIFICATIONS

● B.S. in Software Engineering — UNAPEC University (2012 – 2016)

● AWS Certified Developer – Associate (2018)

● Oracle Certified Professional — Java SE 6 Programmer & Java EE Web Component Developer LANGUAGES & LOCATION

● English: Fluent (Full professional proficiency in verbal & written communication)

● Spanish: Native

● Location: Santo Domingo, Dominican Republic (LATAM — 100% overlap with U.S. EST/EDT hours)

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