Adrián Agüero
About Me
Hello! I am a software engineer with more than 8 years of experience in software development. I consider myself a skilled and very passionate problem solver because, regardless of the complexity or technology used, I focused on building solutions appropriate to the client/user requirements and that are maintainable over time.
During these years I held different roles such as backend developer, fullstack developer, user support. I have accumulated experience in different technologies, both frontend and backend, I have worked in small and large teams. I've run entire initiatives on my own or helped junior co-workers get started. I like to learn and share my knowledge. I believe that teamwork and communication are essential to achieve great things.
I am currently developing my own side project from which I learn many new concepts such as building based on user feedback, releasing high-impact functionalities periodically, etc.
Work Experience
Senior Full Stack Developer
Mawi is a Costa Rica-based startup that offers a SaaS for budget management in the construction industry.
Achievements:
- Implementation of new AI functionalities for process automation (PDF data extraction, Embeddings, etc).
- Evolutionary development of new features.
- Implementation of tests in rspec.
- Bug fixing.
- Research, proposal and development of new features.
Technologies used:
- RoR 7
- Hotwire
- IA Agents
- Vibe coding/Cursor
- Stimulus/Javascript
- Docker
- TailwindCSS 3.4
- PostgresSQL 16
- Sidekiq/Redis
FullStack Developer
G Digital is a multifaceted company that provides marketing and custom software development services mainly in the e-commerce sector.
Achievements:
- Add new features systems already in production.
- Integration with third-party APIs (Bancard, BIMs, etc.).
- Actively collaborated on the functionalities necessary for production deployment.
Technologies used:
- RoR 7
- Stimulus
- GCP
- HTML/CSS
- Javascript
- Docker
- Bootstrap 5
- PostgresSQL 12
- Bancard API
Ssr Backend Developer
Lemu is a UK startup provides conservation services through an app. I contributed to the migration of their backend technological stack, assisted in error correction, and developed new features.
Achievements:
- Successful migration of the technological stack from CloudFunction to RoR API.
- Increased test coverage from 0 to 65%.
- Integration with third-party APIs (Stripe, OpenWeather, Firebase).
- Actively collaborated on the functionalities necessary for production deployment.
- Led the initiative for multi-language support.
- Deployment of the application to production.
Technologies used:
- RoR 7
- Stimulus
- GCP
- Firestore
- HTML/CSS
- Javascript
- Docker
- TailwindCSS 3.4
- PostgresSQL 14
- Stripe
- Swagger
Fullstack Developer
Integradevs is a software factory for clients from the United States and Paraguay. I collaborated as a full-time software developer on projects of different sizes.
Achievements:
- Automated installation of test and production environments using Ansible.
- Deployment of the application to production.
- Enhancement of metrics in a distributed system by adding OpenTelemetry.
- Implementation of disaster recovery mechanisms with PostgreSQL [Stream replication].
Technologies used:
- RoR 4.2
- JRuby 9.1
- Linux
- Ansible
- Tomcat 8.5
- PostgreSQL 9.6
- HTML/CSS
- JQuery 3
Fullstack Developer (Freelance)
I worked as a part-time fullstack developer for a company located in Paraguay that wanted to build a SASS product for small business administration.
Achievements:
- Deployment of the application to production.
- Creation of a SASS from scratch.
Technologies used:
- RoR 6
- EmberJS
- PostgreSQL 14
- Heroku
Projects
Lead Developer
Millionaires is my personal project that seeks to become a personal finance advisor. It is a PWA made from scratch in RoR, hosted on AWS, and receives periodic updates based on user feedback. I am in charge of UX and business logic, database and deployment.
Achievements:
- Authentication with Google Login.
- Using server-side rendered components.
- Web scraping for process automation.
- Use of non-invasive multi-tenant technique.
- Progressive Web App [PWA] Implementation.
- Dockerized project, compiled for ARM architecture for EC2 T4 on AWS.
- Deployed in production environment in AWS.
- Using secure protocol [https] with reverse proxy server.
- Using TailwindCss and Stimulus.
- Integration with OpenAI API.
- Multi language support.
- Performance optimization. Minification and gzip compression of assets via proxy.
- Using Hotwire and Turbo Stream for real time update.
Technologies used:
- RoR 7
- Hotwire
- AWS
- RDS
- S3
- EC2
- Esbuild
- TailwindCSS 3.4
- PostgresSQL 14
- Caddy Proxy
- Docker
Skills & Tools
Frontend
-
React
-
EmberJS
-
Stimulus
-
JavaScript
-
HTML/CSS/SASS/LESS
-
TailwindCSS
-
JQuery
Backend
-
Ruby/Rails
-
Java/Spring
-
Javascript/ExpressJS
-
PostgreSQL/MySQL/SQL Server
-
Redis/Mongo/Firestore
Others
- DevOps
- Code Review
- Git/Svn
- Unit Testing
- AWS
- GCP
- Docker
- NewRelic
- Jira
- Scrum
- API
- Stripe
Education
-
BSc in Software EngineeringUniversidad Nacional de Itapúa, Paraguay. [GPA 4.1/5.0]Jul 2011 - Oct 2023
-
Recipient of an academic scholarship for exchange program.University of Salamanca, Spain.Sep 2014 - Jul 2015
-
Recipient of an academic scholarship for exchange program.Universidade Federal de Sao Carlos, Brazil.Mar 2014 - Jul 2014
Awards
-
Honor StudentRecognition for Students with high GPA.
-
Champion in the Mathematics OlympiadMar 2009
Language
- Spanish (Native)
- English (B1)
- Portuguese (B1)
Interests
- CrossFit
- Cycling
- Cooking