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Rafael José López Buelvas

@rafaeljoslpezbuelvas

Backend software engineer specializing in Java, microservices, and architecture.

Colombia
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What I'm looking for

I seek senior backend or architect roles where I can lead technical teams, design resilient microservice systems, and apply TDD and cloud-native practices in collaborative, agile environments.

I am a Backend Software Developer with over 14 years of experience building high-quality software, specializing in Java, Spring/Spring Boot, and Python. I have led teams using Agile methodologies (Scrum, XP, Kanban, Management 3.0) and designed high-availability products using Microservices, Hexagonal Architecture, DDD and Event-Driven Architecture.

I have worked remotely with an American company on OpenAPI open-source projects and delivered cloud-native solutions using AWS, Docker, Kafka and CI/CD practices. I continuously apply TDD, clean code and architectural best practices to mentor teams, improve product quality, and drive technical initiatives that align with business goals.

Experience

Work history, roles, and key accomplishments

GR
Current

Senior Software Consultant

Gravity9

May 2024 - Present (1 year 4 months)

Led Java practice and development initiatives delivering microservices and transformer components using Java, Spring Boot and Python, improving integration and deployment across projects.

PL

Fullstack Software Engineer

Plenty

Mar 2021 - Apr 2024 (3 years 1 month)

Developed microservices and frontend components for an agriculture platform using Java, Spring Boot and React, applying TDD and hexagonal architecture to improve reliability.

BA

Backend Software Engineer

BairesDev

Feb 2022 - May 2023 (1 year 3 months)

Built and maintained Java Spring Boot microservices and CI/CD pipelines for leadership frameworks, improving delivery cadence and system stability.

PS

Senior Software Developer

Pyxis SAS

Apr 2016 - Mar 2021 (4 years 11 months)

Led support and backend development for Hybris core projects for major clients, driving backend enhancements and support processes across teams.

US

Adjunct Lecturer

Universidad del Sinú

Jan 2011 - Oct 2013 (2 years 9 months)

Taught software engineering, software quality and related subjects, coordinating investigative projects and guiding student development in multiple programming disciplines.

Education

Degrees, certifications, and relevant coursework

Politécnico Grancolombiano logoPG

Politécnico Grancolombiano

Systems Engineer, Systems Engineering

2008 -

Completed studies in Systems Engineering at Politécnico Grancolombiano beginning in 2008.

Universidad del Norte logoUN

Universidad del Norte

Master of Science, System Engineering and Computation

Master of Science in System Engineering and Computation with an emphasis in Software Engineering.

GK

Global Knowledge

Professional Training, Java SE7 Fundamentals

Completed Java SE7 Fundamentals training through Global Knowledge.

Oracle (Java Certification) logoOC

Oracle (Java Certification)

Oracle Certified Associate, Java SE 7, Java

Oracle Associate Java 7 certification (Java SE 7).

SK

Scrum Alliance / Seonti / Kleer

Scrum Certifications, Scrum / Agile

Certified Scrum Master and Certified Scrum Developer certifications.

CS

Ceiba Software

Management 3.0 Certification, Management 3.0

Management 3.0 certification through Ceiba Software.

MI

Meyer Institute

English Studies Level AC4, English

English studies at level AC4 completed at Meyer Institute in Cartagena.

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Rafael José López Buelvas - Senior Software Consultant - Gravity9 | Himalayas