Photo of me

Hugo Osvaldo Barrera

Curriculum Vitae


I’m an experienced software developer and engineer. I started programming (as a hobby) in 1999, and moved onto scripting in some of my first jobs. I’ve been programming professionally since around 2009. My go-to language is Python (I’ve worked with it the most these decades), but I’m not married to it: there’s a right tool for each job. I’m happy to work with go, Vue, TypeScript, Rust, and have worked with dozens of other languages over the years. A simple 9-line bash script is often underrated.

I’m very passionate about writing good code, correctness, standards compliance and interoperability. As my open source contributions over the years will show, I adhere to these principles, but can also understand when it’s pointless to lose time, and leaving a neat tidy hack is the best solution.

I prefer clean, explicit (but not redundant) code. I’m more than familiar with Git (it’s easy if you just think about it as a directed graph of patches), Docker, and many other pieces of tech that lie under the hood.

I also have good understanding of writing scalable, efficient systems. I’m not committed to any single language, and will use the right tool for each job. Often times, the simplest solution is grabbing the right tools and libraries, and glueing them tidily together into something greater than all the parts. I’ve no interest in reinventing the wheel, or writing uninteresting code from scratch.

I can handle the whole process; writing code, setting up automated deployments, and shipping to production (or coordinating a team to work on all these steps). An assignment is fully finished when it’s shipped and running, solving the user’s problem.

Professional Experience

Senior Software Engineer Oct 2020 - Current
ProctorExam - Amsterdam, NL

I’ve been designing and implementing applications to handle live management of video streams. I’ve used AWS Lambda to implement multiple event-based micro-services, as well as contributed to improving our pipeline, migrating to GitLab CI, and improving developer experience through automation and standardisation.

Skills: TypeScript, AWS Lambda, Ruby on Rails, Docker, Docker Compose, PostgreSQL, GitLab CI, JavaScript, React
Tech Lead Jan 2020 - Oct 2020
Tiqets - Amsterdam, NL

Tiqets was my first experience as a Tech Lead at a larger company. While somewhat intimidated by the challenge at first, I quickly realised that the things that are expected of a Tech Lead are exactly those things which I’d been leaning towards in recent years.

As well as providing higher level problem solving, I pushed to improve our development workflow and deployment practices. Our team spearheaded a migration to a cleaner, simpler CI+CD platform, which we then gradually adopted company-wide.

I also contributed to coordinating better system design and greater inter-team collaboration.

Skills: Python, Flask, Django, Docker, Docker Compose, Celery, PostgreSQL, GitLab CI, Metabase
Senior Backend Engineer Apr 2019 - Jan 2020
3D Hubs - Amsterdam, NL

My responsibilities at 3D Hubs included interviewing and mentoring new joiners, improving our onboarding, and assiting newcomers in understanding how our systems work and our development workflows.

I presented proposals on improving our work practices (eg: git flow, automated migration management, etc.). I helped deliver solid solutions for eliminating accumulated technical debt and led the team to reach a consensus on how we’d address each of these.

Finally, I contributed to documenting how our systems work, including some of those non-obvious internals that all large systems tend to grow, which helped fellow developers have a clearer vision of different moving parts and how they fit together.

Skills: Python, Flask, Docker, Docker Compose, Celery, PostgreSQL
Senior Engineer Feb 2018 - Apr 2019
Medallia - Ciudad Autónoma de Buenos Aires, AR

I was accountable for consistently shipping quality features that added value to the product while minimizing debt. It was also my responsibility to improve team’s effectiveness by identifying knowledge, tools, and process gaps in team and partnering with management to address them.

I worked on several smaller projects in Python, Flask, Django, which ran on docker both in our own DCs and AWS. My role required me to identify needs of consumers and then design and implement our systems based on these needs.

Python Engineer Feb 2017 - Feb 2018
Shiftgig - Ciudad Autónoma de Buenos Aires, AR

My responsibilities included collaborating with cross-funcional teams to deliver product features and enhancements, writing unit tests for automated testing and implementation of data models in relational and non-relational stores.

Senior Developer & Architect Jan 2016 - Sep 2016
ShipNow - Ciudad Autónoma de Buenos Aires, AR

My responsibilities have varied from simple development, to defining workflows, deployment techniques, and selecting the appropriate tools, services and environments for the team, though all final decisions were made as a team.

I worked on integrating with various external services, including payment providers, shipping providers, and other third party systems.

Software Engineer Mar 2012 - Mar 2016
Freelance - Ciudad Autónoma de Buenos Aires, AR

I worked as a freelance developer for several companies and smaller projects (many of these solo projects).

  • Developed and maintained multiple Django-based web applications and REST APIs.
  • Performed python2->python3 migration for existing codebases.
  • Worked as full stack developer and admin for django-based applications hosted at AWS.

I enjoyed not only programming at these positions, but also understanding the exact problems my clients had, and figuring out the best solutions for their specific needs.

Frontend Developer Mar 2013 - Mar 2014
ASSIA Inc - Remote

I was responsible for all aspects of development, design and maintenance of web-based software in Java and JSF. I was required to take broad ownership of technical tasks including the study, analysis, design and programming of new and existing applications and functionality.

Software Developer Apr 2012 - Mar 2013
WikiLife - Ciudad Autónoma de Buenos Aires, AR

I contributed to the design and development of a tornado-based REST API, as well as the backend project which handled and manipulated high volumes of health-related information, and analysis of various related statistics.

Software Developer Aug 2011 - Jun 2012
Tultix - Ciudad Autónoma de Buenos Aires, AR

My tasks included the creation of various java web-based application, including several data-processing and format-conversion systems used to convert large volumes of non-uniform data into standardized formats.

IT Support Specialist Dec 2010 - May 2011
SAP - Provincia de Buenos Aires, AR

I provided first-level IT support for SAP staff.

Software Developer and Systems Administrator Nov 2009 - Oct 2010
DreamSys S.R.L. - Comodoro Rivadavia, AR

I participated in the development and maintenance of various web-based, desktop and mobile software applications, in Python, Java, C# and Flex. I was also responsible for administration of servers, networks and deployments (many times physically at client locations).

IT Support Technician May 2008 - Nov 2009
Universidad Nacional de la Patagonia San Juan Bosco - Comodoro Rivadavia, AR
  • My internship was at the IT department, where I was responsible for provisioning and maintenance of our on-site systems. I did a lot of automation in terms of provisioning new devices to our staff (professors and researchers).

Teaching Experience

As well as experience mentoring fellow developers in professional environments, I have experience educating in academic environments too.

Teaching Assistant Mar 2012 - Dec 2015
Universidad de Palermo - Ciudad Autónoma de Buenos Aires, AR

I taught the basics of procedural and object-oriented programming (as a TA on the course Programming I), object-oriented patterns and design (as a TA on Object Orientation I) and best practices in general to Engineering students.

Substitute Teacher Oct 2015 - Dec 2015
Escuela Da Vinci - Ciudad Autónoma de Buenos Aires, AR

I taught the course Instruction on Object Oriented Programming I to Programming students, diving into the basics of OOP in a Java-based environment.

Teaching Assistant Apr 2009 - Oct 2010
Universidad Nacional de la Patagonia San Juan Bosco - Comodoro Rivadavia, AR

I helped shape the minds of young students by teaching and helping them understand the basics of procedural programming and low-level computing to Computer Science students taking Introduction to Programming.

Academic Experience

Soft Computing Researcher Jun 2013 - Jul 2014
UPCR Labs, Universidad de Palermo - Ciudad Autónoma de Buenos Aires, AR

I implemented multiple purpose evolutionary algorithms, and researched their applications in intelligent web crawling.

Soft Computing Researcher Apr 2011 - Jun 2013
AIGroup, Universidad de Palermo - Ciudad Autónoma de Buenos Aires, AR

I worked on an intelligent web crawler which implemented an exploration method based on semantic distance between keywords.

Adacemic Qualifications

Licentiate in Computer Science 2011 - 2018
Universidad de Palermo - Ciudad Autónoma de Buenos Aires, AR

I completed all courses and exams for this title, but have not done the final thesis required to complete it.

Systems Analyst 2011 - 2017
Universidad de Palermo - Ciudad Autónoma de Buenos Aires, AR

I completed this career and possess a graduate title for it.

Informatics Engineering (incomplete) 2007 - 2010
Universidad Nacional de la Patagonia San Juan Bosco - Comodoro Rivadavia, AR

I did not finish these studies nor receive a degree since I relocated to Buenos Aires to pursue richer career opportunities.

Conference Publications

Web Crawling clustering on multidimensional space based on distance and its application to Opinion Mining
TRIC V, CIS-IEEE Argentina, Jun 2012

E. Gorbatik, H.O. Barrera, E. Schneider Loaiza, F. Riaño Santiesteban, F. Gindre, M.D. López De Luise

Smart web crawling with fuzzy clustering
IADIS European Conference Data Mining Portugal, Jun 2012

E. Gorbatik, H.O. Barrera, F. Gindre, M.D. López De Luise

Technical and Personal Skills

Interests and extra-curricular activities

Open Source Contributions

Other interests and activities

Last updated 2021-09-28

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