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migue UserMU
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migue User

@migueuser

Senior Java backend developer building secure, scalable microservices with TDD and DDD.

Argentina
Message

What I'm looking for

I’m looking to build secure, scalable Java microservices where TDD, DDD, and Clean/Hexagonal Architecture drive quality. I want ownership of performance, reliability, and database migrations, and space to mentor teams and improve engineering practices.

I’m a Java Backend Developer with 8+ years building scalable, production-ready microservices and distributed systems across healthcare, fintech, insurtech, and SaaS. I specialize in Spring Boot 3 and Java 17/21, focusing on high-availability service design and robust domain modeling.

I’m a strong advocate of Test-Driven Development, Domain-Driven Design, Clean Architecture, and SOLID principles. Across teams, I’ve introduced testing practices and established code-quality standards (e.g., Checkstyle) to improve consistency, reviewability, and release confidence.

Recently, as a Senior Backend Developer, I design Java 21 / Spring Boot 3 microservices with DDD and Hexagonal Architecture, including secure OAuth2 flows with PKCE and auditable orchestration using Spring State Machine. I also lead database migration improvements with Liquibase and evaluate modern Java concurrency patterns (Virtual Threads / Project Loom) for adoption.

Experience

Work history, roles, and key accomplishments

Globant S.A. logoGS
Current

Senior Java Developer

Sep 2025 - Present (10 months)

Designed and implemented Java 21/Spring Boot 3 microservices using Domain-Driven Design and Hexagonal Architecture with a focus on secure access and reliable service orchestration. Established team code-quality standards and introduced Liquibase for versioned database migrations.

FL

Java Developer

FluxIT

Sep 2024 - Aug 2025 (11 months)

Performed Java R&D evaluating Java 21 features and modern concurrency patterns for adoption in client projects. Benchmarked virtual threads (Project Loom) with Spring Boot 3 using JMeter under high concurrency and produced technical write-ups.

IU

Java Developer

Iunigo

Apr 2021 - Jun 2022 (1 year 2 months)

Developed insurance products end-to-end using TDD, Domain-Driven Design, and Agile practices. Co-designed and built MVC products, spearheaded TDD adoption to improve release confidence, and built an internal Java library wrapping Amazon S3 capabilities.

Endava logoEN

Java Developer

Nov 2019 - Mar 2021 (1 year 4 months)

Contributed to an infrastructure migration of the Lighthouse Enterprise platform from Web.com to Internet Brands. Worked on networking and microservices integration and extended the service layer with Node.js modules.

Globant S.A. logoGS

Java Developer

Aug 2018 - Oct 2019 (1 year 2 months)

Developed features and performance improvements for StartMeUp, Globant’s internal private social network. Integrated JaCoCo into the build pipeline for code coverage tracking and enforced Sun/Oracle code conventions for consistency and quality.

Education

Degrees, certifications, and relevant coursework

UU

Universidad Tecnológica Nacional (UTN)

Computer Programming Technician, Computer Programming

Grade: 18/20 subjects completed

Computer Programming Technician program; completed 18 of 20 subjects.

CI

Cisco

Cisco CCNA (CCNA 1–3), Networking

Completed Cisco CCNA 1, CCNA 2, and CCNA 3 certifications.

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