Diego Mellen
Senior Software Engineer at Kraken
Madrid, Community of Madrid, Spain
Summary
👤
Senior🎓
Top SchoolDiego Mellen is a Senior Software Engineer based in Madrid with 13 years of professional Python experience, specializing in backend systems, APIs, internal tools and ETLs. He has helped scale startups through hands-on roles at Fever (now a Spanish unicorn) and shipped products from scratch like Email Meter, blending product-minded engineering with production-ready architectures. Comfortable across Django, Flask and FastAPI, he pairs strong database expertise (Postgres, BigQuery, Redis) with task processing tools like Celery and Dramatiq and cloud/serverless experience on GCP and AWS. Diego contributes to notable open-source projects such as the widely used sorl-thumbnail, where he implemented a new Wand-based image engine and improved testing and error handling. At companies from Aiven to Frontiers and now Kraken, he’s focused on reliable, maintainable systems and CI/CD best practices. Beyond work he’s a lifelong learner who experiments with new languages and tools to find the best solution for each problem.
13 years of coding experience
11 years of employment as a software developer
Technical Engineer in Computer Systems Computer Science, Technical Engineer in Computer Systems Computer Science at Universidad Rey Juan Carlos
Spanish, English
Stackoverflow
9,464reputation
2.1mreached
80answers
9questions
sql
top-5%
loops
top-5%
argparse
top-1%
flask
top-5%
python
top-1%
csv
top-5%
Github Skills (15)
argparse10
python10
image-processing10
django10
flask9
sqlalchemy9
loops9
sql9
csv9
testing8
documentation7
json6
printing6
urllib6
dictionary6
Programming languages (5)
Github contributions (5)
jazzband/sorl-thumbnail
Jul 2013 - Oct 2013
Thumbnails for Django
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 commits in 2 months
Contributions summary:Diego primarily contributed to the development of a new image processing engine using the Wand library for the sorl-thumbnail Django application. They implemented the core functionality for the engine, including image manipulation and format handling. The user also updated the test suite and documentation to reflect the new engine's integration. Further contributions included bug fixes related to image cropping and improving error handling with the Wand library.
djangothumbnails
Feverup/pysugarcrm
Sep 2015 - Oct 2016
Python API Wrapper for SugarCRM v10
Contributions:18 commits, 7 PRs, 15 pushes in 1 year 1 month
apipythonapi-wrapperv10sugarcrm
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