Freelancer profile translated to English.
Back to original languageAbout Emilio
Software engineer specialized in Python (Django, Flask, FastAPI), Vue (SPA, SSR), and architecture.
Regarding the back-end, I have more than 10 years of experience working on medium and large-scale Python projects. I am an expert in detecting and resolving performance problems that affect various layers of the architecture or involve several services. The frameworks I usually work with are Django, Flask, or FastAPI.
In recent years, I have developed several projects using Vue such as Construfy - the construction social network. Construfy is a Single Page Application (SPA) that uses Server-Side Rendering (SSR) for SEO. Among its functionalities, there is an instant messaging system supported by an on-premise instance of ejabberd (Erlang). WhatsApp or Google Talk are examples of applications that based their products on ejabberd.
On the other hand, I have extensive experience in software architecture, which began during my time at Roiback where I actively participated in the evolution of the architecture. Since then, I have deployed my own service infrastructure, Docker Swarm clusters, and designed and maintained the infrastructure of several products. I use Ansible for the maintenance of these infrastructures.
I always try to stay connected to the new trends and technologies that appear in software development. In my current jobs, I use Docker, the latest versions of each technology, and apply the best software development practices in order to deliver the best and most robust product.
English
Fluent
Spanish
Native or bilingual
Catalan
Native or bilingual
Can work on-site
Palma de Mallorca (up to 50km), Palma (up to 40km)
Experience
- FreelanceSoftware EngineerSOFTWARE PUBLISHINGApril 2019 - Today (7 years and 2 months)• 2021 Scrapping application:- Refactor a platform to support multiple spiders feeding the same database- Scrapy over Celery (highly scalable)- Ability to pause and resume long-running spiders (e.g., on deployments or downtimes)- Database optimizations- Technologies: Django, Scrapy, Celery, Python• 2020-21 Construfy - the social network for tradespeople:- Develop a social network for tradespeople from scratch- Backend written in Python / Django / Django RestFramework- Frontend is a SPA written in Vue / Nuxt with SSR for SEO- Instant messaging chat based on ejabberd with custom extensions (erlang)- Social login, Mailchimp users integration, Facebook audiences- Deployment on a swarm cluster (self-managed)• 2020 Shopify application:- Ansible playbooks for production and staging environments- Dockerize application for local development- Technologies: Docker, Ansible, Linux, RabbitMQ, Nginx, systemd, cron, npm, webpack.• 2020 Hotel Booking Engine:- Develop a country-configurable tax system- Technologies: Django, Python• 2019 Scraping application:- Development and maintenance of spiders- Implementation of new features- Instrument local environment- Technologies: Django, Scrapy, Python, isort, flake8, black• 2019: Acerutti - GRI (Global Reporting Initiative)- Design and develop a REST API from scratch- Develop Fabric2 deployment scripts- Develop Fabric2 scripts for S3 database backups management- Dockerize Django project for local development- Deploy an EFK stack- Configure basic Bitbucket CI- Other developments- Technologies: Django, DRF, Python, PostgreSQL, Docker, Redis, Amazon S3, Fabric 2.
- RoibackDeveloperTRAVEL AND TOURISMJune 2014 - March 2019 (4 years and 10 months)Palma de Mallorca, SpainAt Roiback I have had a changing career in roles and functions:- Team lead of Roiback Big Accounts (9 months)- Team lead and responsible for a strategic project (24 months)- Complete rewrite of the hotel availability service (9 months)- Senior backend developer in the CRS teamMy main tasks:- Optimizations of critical parts of the system (e.g.: price changes, availability service)- Architecture of the CRS (core) system- Member of the system guards team for more than 4 years- Selection and tutoring of new programmers- Customer relations- Two migrations of the system core to another server provider- The application of Agile methodologies in all company processes- A lot of analysisTechnologies:- Python, Django and Celery for development- Redis as cache and distributed semaphore- RabbitMQ as Celery backend- Nginx as web server and reverse proxy- HAProxy- Postgres with stream replication- PGPool II as load balancer and in-memory cache (key point for performance)- EFK (Elastic Fluentd Kibana) for Nginx, HAProxy, uWSGI and the CRS application- Telegraf, InfluxDB and Grafana for monitoring- Nagios and aNag for monitoring and alarm system (guards team)- VMware as private cloud (guards team)- Docker for satellite projects- Gitlab CI in CRS- Fabric for CRS deployment
- Mola Factory S.L.DeveloperSOFTWARE PUBLISHINGNovember 2012 - December 2013 (1 year and 2 months)Palma de Mallorca, SpainProject manager: development of a mobile application for iOS for the purchase and sale of second-hand items and services.
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Education
- Systems Computer EngineeringUniversity of the Balearic Islands2010
- Higher Engineering in Computer ScienceUniversity of the Balearic Islands2017