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Hi, I’m Marco Antonio Arniz Montero Graz, a Software Engineer with 2+ years of experience in full-stack development, specializing in Python and Java for scalable, real-world solutions. I’m currently leading software development initiatives at an energy research institute, where I designed a Python library for network optimization and provide technical mentorship to researchers. I’m adept at bridging the gap between complex engineering requirements and scientific research, with a focus on Clean Code architecture and open-source integration in international environments.…Hi, I’m Marco Antonio Arniz Montero Graz, a Software Engineer with 2+ years of experience in full-stack development, specializing in Python and Java for scalable, real-world solutions. I’m currently leading software development initiatives at an energy research institute, where I designed a Python library for network optimization and provide technical mentorship to researchers. I’m adept at bridging the gap between complex engineering requirements and scientific research, with a focus on Clean Code architecture and open-source integration in international environments.

Marco Antonio Arnaiz Montero

Full Stack Developer, Web Developer, Programmer, +2

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Hi, I’m Marco Antonio Arniz Montero Graz, a Software Engineer with 2+ years of experience in full-stack development, specializing in Python and Java for scalable, real-world solutions. I’m currently leading software development initiatives at an energy research institute, where I designed a Python library for network optimization and provide technical mentorship to researchers. I’m adept at bridging the gap between complex engineering requirements and scientific research, with a focus on Clean Code architecture and open-source integration in international environments.…Hi, I’m Marco Antonio Arniz Montero Graz, a Software Engineer with 2+ years of experience in full-stack development, specializing in Python and Java for scalable, real-world solutions. I’m currently leading software development initiatives at an energy research institute, where I designed a Python library for network optimization and provide technical mentorship to researchers. I’m adept at bridging the gap between complex engineering requirements and scientific research, with a focus on Clean Code architecture and open-source integration in international environments.

Available to hire

Hi, I’m Marco Antonio Arniz Montero Graz, a Software Engineer with 2+ years of experience in full-stack development, specializing in Python and Java for scalable, real-world solutions. I’m currently leading software development initiatives at an energy research institute, where I designed a Python library for network optimization and provide technical mentorship to researchers.

I’m adept at bridging the gap between complex engineering requirements and scientific research, with a focus on Clean Code architecture and open-source integration in international environments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Beginner

Beginner

Beginner

Beginner

Beginner

Language

Spanish; Castilian

Fluent

English

Fluent

German

Beginner

Work Experience

Software Engineer - Project Assistant at Technical University of Graz - Institute of Electricity Economics and Energy Innovation

August 1, 2025 - Present

Reduced data processing pipeline execution time by 83% (from 300+ seconds to under 60 seconds) by identifying bottlenecks, refactoring, and implementing optimized algorithms. Designed and developed NPA P, a Python library for network partitioning and aggregation using clustering and machine learning approaches over NetworkX graphs, targeting integration into PyPSA. Provided technical leadership to 8+ PhD and post-doctoral researchers with non-software backgrounds by conducting requirements analysis sessions, designing scalable software architectures, and establishing Clean Code standards and open-source practices across the institute's projects. Built interactive dashboards for energy system data visualization, enabling researchers to analyze complex datasets, accelerate decision-making processes and show results to clients.

Software Engineer - Project Assistant at University of Sevilla - IS A Research Group (Applied Software Engineering)

May 1, 2024 - August 31, 2025

Designed and delivered a full-stack application with a user-centered approach using FastAPI (Python) backend and TypeScript/Astro frontend, enabling users to filter OCEL 2.0 event logs through natural language queries powered by LLM integration. Developed, evaluated and maintained 'ocelpinot', a Python meta-library for defining and computing Object-Centric Process Performance Indicators, by implementing OCEL 2.0 standard features. Collaborated with cross-functional research teams using Python, Neo4j, and Java to develop data mining and process mining solutions for business process enhancement that automated manual analysis.

Production Assistant at Telefónica

December 1, 2023 - December 31, 2023

Worked as a production assistant for a global telecom provider with services across Europe and Latin America, supporting operations and coordinating tasks across teams in Sevilla.