# Juan Manuel Alonso

> Software Development Engineer II at Amazon

Location: London, England, United Kingdom
Profile: https://flows.cv/juanmanuelalonso

software engineering, finance - F1 fan

## Work Experience
### Software Development Engineer II @ Amazon
Jan 2024 – Present | London, England, United Kingdom
As a member of Prime Video's Checkout team, I help develop and maintain a service that personalizes what customers see in TVs, tvOS, FireTV, mobile and web devices when buying or renting films and channels.

### Senior Software Engineer @ Mercado Libre
Jan 2023 – Jan 2024 | Buenos Aires, Buenos Aires Province, Argentina
Collaborated with dozens of distributed Tech Leads and colleagues that deployed hundreds of A/B experiments and flags for millions of LatAm users among Mercado Libre’s e-commerce, payments and various other mobile products that helped me gain extensive experience in development processes and refined my technical skills. 

I played a key role in the development of SDKs that permitted such integrations, leading the efforts in Android and iOS, and in migrating a previous feature flag solution for the entire company.

Investigated thoroughly existing solutions before building new ones from scratch, in order to have the trade-offs clear for each alternative. This helped me built a solution that granted teams at the company observability and governance over the flags they use. Such solution involved multiple services, a new DB, caches and a pull request pipeline detection system.

I was also given the responsibility of mentoring colleagues, which enabled me to develop leadership skills and the ability to communicate complex technical concepts in a clear and concise manner (peer programming, PR reviews, system design documents reviews), and conducted interviews.

I also proposed and implemented the use of better tools for the team’s (20+ members) task-planning efforts.

### Ssr Software Engineer @ Mercado Libre
Jan 2021 – Jan 2023 | Buenos Aires, Buenos Aires Province, Argentina
Working as a part of Melidata,
the company's A/B testing and Feature Flag team, building APls and services that achieve reliability, high
scalability and maintainability for our users.

The team maintains a complex architecture resilient to high-traffic periods that allows experiment results to be queried for other teams to drive their business decisions. 

Main tasks:
* Business requirements analysis, design and
development
* Assuring product quality thorough
unit and integration tests and
performing code reviews as well
* Technology migrations
* Monitoring and analyzing services
performance through the usage of different
tools such as Datadog and New Relic

Tech stack: Java, Groovy&Grails, Go, Python, Android (Java), iOS (ObjC)
Spring, Spring Boot, Spark, Git,
MySQL, DynamoDB,
Postman, RESTful APIs

### Competitive Programming Advisor @ ITBA Computer Society
Jan 2022 – Jan 2022
Responsible for organizing and coordinating contents and meetings for my University’s competitive programming teams.

We managed to build and train two teams (5 each) in weekly meetings that ultimately competed within the best 10 teams in both national (TAP) and international (IEEE) competitions.

Advisor to students as a graduate.

I really enjoyed this new branch in my career. I was given the opportunity to mentor younger students in data structures and algorithms concepts and share the leadership in the organization’s competitive programming arm, enhancing my soft skills like never before.

### Full Stack Software Engineer @ Yolly.io (formerly Xencio)
Jan 2020 – Jan 2021 | Vienna, Austria
Developed a personal finance site for global users to organize their invoices, bank accounts and clients.
Built core features and improved the reliability of systems as the startup rapidly scaled the product.
Angular, Node.js, Java, MongoDB, AWS, Jenkins, Trello, GitLab

### Backend Engineer @ Wolox, part of Accenture
Jan 2018 – Jan 2019
- Developed an integrated platform for educational content for middle and high school teachers in multiple countries. PostgreSQL management, AWS & Docker deployment and consistent use of GitHub (Pull Requests & Issues workflow).
- Continuous delivery of features with Scrum
- Acquired great skills in team work


## Education
### Bachelor's degree in Computer Software Engineering
Instituto Tecnológico de Buenos Aires

### Master's degree in Computer Software Engineering
FH Technikum Wien

### Analyst in Information Technology in Computer Software Engineering
Instituto Tecnológico de Buenos Aires


## Contact & Social
- LinkedIn: https://linkedin.com/in/juan-m-alonso
- Website: https://j1nma.com

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Source: https://flows.cv/juanmanuelalonso
JSON Resume: https://flows.cv/juanmanuelalonso/resume.json
Last updated: 2026-04-05