Valdés JUAN GABRIEL

Senior Backend Engineer

Ave. Libertador Brig. General Lavalleja 2071/201, Montevideo, Uruguay. jgvaldes1992@gmail.com (+598) 96303830

Profile

Senior Backend Engineer with 9+ years building scalable REST APIs and distributed systems across ad-tech, HR-tech, and e-commerce. Deep expertise in Python/Django; growing proficiency in Java/SpringBoot. Proven record leading features in high-growth, fully remote SaaS products.

Education

COMPUTER SCIECE ENGINEER

Universidad de las Ciencias Informáticas. La Habana - Cuba 2011 - 2016

Middle Technician in Computer Science. Polytechnic Institute of Informatics Lázaro Cárdenas del Río, Santa Clara, Villa Clara, Cuba.

Experience

Senior Backend Engineer

From Aug 2025 | SunnyData AI. (https://www.sunnydata.ai/)

Develop FastAPI and SpringBoot services for Kroger's 8451 Ad Platform, enabling campaign and ads management across all Kroger retail sites.
Configured Azure secrets, GitHub Actions, and Terraform pipelines for CI/CD; authored Postman contract tests to enforce API contracts across services.
Daily collaboration with the team using Git/GitHub for version control, Confluence and Jira for SCRUM process, and Microsoft Teams for standups.

Technologies used

Kubernetes
Azure
Python 3.8+
FastApi
Java
SprintBoot
Redis
MongoDB
Jira
Git
GitHub
Postman

Senior Software Engineer

From Jan 2023 to Jul 2025| UKG - Employee Voice (https://ukg.com)

Led REST API development for UKG Pro's Employee Voice survey tool, building automation rules for survey triggering, participant generation, and multi-channel invite delivery.
Re-architected Celery Beat pipelines for survey tracking and aggregation, improving processing throughput and expanding product scope.
Designed a Java 21 + SpringBoot service layer to migrate the legacy Employee Voice platform to a centralized, standards-compliant data service.
Daily collaboration with the team using Git/GitHub for version control, Jira for SCRUM process, and Slack/Microsoft Teams for standups.

Technologies used

Kubernetes
GCS
Python 3.8+
Flask
API Rest
AngularJS
Redis
MySQL
MongoDB
Celery
Jira
Git
GitHub
Java
SprintBoot

Backend Developer

From Nov 2019 to Sept 2022 | Smart and Fun (https://plusholidays.com)

Built REST API services for a Spanish holiday property reservation platform, delivering full-CRUD modules for Accommodations, Notifications, and Settings.
Implemented public-facing services for displaying, filtering, and calculating reservation rules using complex search filters across accommodation listings.
Implemented Celery scheduled tasks and WebSocket notification delivery for asynchronous event processing and real-time client alerts.

Integrated Inter Home Group and Avantio VRMS for real-time booking and accommodation synchronization, eliminating manual reconciliation across platforms.

Technologies used

Django 3
Python3
DRF
API Rest
PostgreSQL + postgis
Redis
GitHub
Celery
Git
GitLab
Trello
Slack

Full-Stack Developer

From Jan 2017 to Aug 2022 | Locomotion Technologies Corp - WHATISHOT (https://wih.app)

Online store type website for product sales. Allow to manage departments, categories, register affiliates and use drivers to complete delivery orders.
Signal webhook handling for receive email from SendGrid and process orders request.
Setting and generation of Meta SEO techniques for static pages, products and categories.
Development of a search module for save asynchronously user searches over configured Filter Forms, allowing to collect data for future analyze and processing. Django-RQ were used to this operations.
Google Merchant Center Integration for generate available product feeds for Google Shopping.
Develop of unit test for validate models, forms, serializers, views and util actions.
Fully remote work, completing assigned tasks on time requirements and working under pressure.
Daily work progress reports following the workflow set by the team using Git/Gitea as version control, Jira to guide SCRUM process and Slack for daily meetings.

Technologies used

Docker
AWS - S3
Django 2.2
Python3
DRF
Django RQ
API Rest
PostgreSQL + postgis
Redis
Metronic
JavaScript
jQuery
Git
Gitea
Jira
Slack

Backend Developer

From Aug 2020 to Sept 2021 | Smart and Fun - Merkárea (https://merkarea.com)

Management system for register Markets and Commerces allowing custom handling of business for its owners and employees. Allow to track commerce orders and post products using custom settings for handling B2B and B2C business models.
Development of varios modules for admin Commerces, Users, Employees and notifications, using push with Firebase and emails with SendinBlue services.
Schedule tasks for handling asynchronous events, email and notify users using Celery.
Fully remote work, completing assigned tasks on time requirements and working under pressure.
Daily work progress reports following the workflow set by the team using Git/GitLab as version control, Trello to guide SCRUM process and Slack for daily meetings.

Technologies used

Django 3
Python3
DRF
API Rest
PostgreSQL
Redis
Celery
Git
GitLab
Trello
Slack

DevOps and Full-Stack Developer

From Jan 2020 to Jul 2021 | CocoLeads + CRM CoReakt (http://api.v2.coco-leads.com)

DevOps settings and deploys with cPanel services handling Yii2 Systems and Django RestFramework complementary applications.
Development of CocoLeads System that manage Leads allowing process then from LandingPages sales. It manage operators and integrate CoReakt CRMs for Spain, Colombia and Ecuador branch offices. Allow the management and customization for Affiliates integration.
Development of CRM CoReakt management system for receive and process leades from CocoLeads requests. Allo to manage and customize workflows involving leads modifications. Control and save operator statistics and alow to them make VoIP calls using Zadarma services.
Development of Django RestFramework API systems for authorize operators to VoIP calls from custom desktop app connected to CRM. Also, it has been developed some django apps for receive workflow notifications and push escential data to Telegram bots.
Fully remote work, completing assigned tasks on time. Weekly job progress reports following the workflow established by the team using Git/GitHub version control and Trello for guide SCRUM process.

Technologies used

Yii2
PHP 7
Django 3
Python3
DRF
API Rest
MySQL + MariaDB
SQLite
Bootstrap
JavaScript
jQuery
Git
GitHub
Trello

Full-Stack Developer

From 2018 to 2019 | UCI - Cuban Videogames Portal (https://cosmox.uci.cu)

Web site for manage Categories, News, Videogames with ranking support and resources management. Includes an internal Coin called BitGames for use internally on videogames to start matches or buy weapons.
The necessary endpoints were created to be consumed by third parties and custom platform videogames, allowing Ranking posting and consulting, BitGames transactions, news consulting, among other functionalities.
Fully presential work, completing assigned tasks on time. Weekly job progress reports following the workflow established by the team using Git/GitLab version control and Gespro for guide the AUP UCI methodology.

Technologies used

Yii2
PHP 5
API Rest
MySQL + MariaDB
Boostrap
jQuery
Git
GitLab

Certificates

PCAP™ – Certified Associate Python Programmer

Mar 2024 | OpenEDG

Provide knowledge and skills to apply and follow best practices on Python certified by Python Institute.

An Introduction to Academic Writing in English

Jul 2021 | Universidad de las Ciencias Informáticas

Provide knowledge and skills required to improve English writing.

Scrum Fundamentals Certified

Jul 2021 | SCRUMstudy

Provide knowledge and skills to apply and follow best practices on SCRUM framework.

PostgreSQL Database Technologies Diploma

Oct 2017 | Universidad de las Ciencias Informáticas

Provide knowledge and skills required to admin and optimize PostgreSQL databases, souch as create triggers and procedures.

Languages

Spanish
English

Interests

Music

Workout

Cofee

Travel

Valdés JUAN GABRIEL

Senior Backend Engineer

Profile

Education

COMPUTER SCIECE ENGINEER

Skills

Experience

Senior Backend Engineer

Senior Software Engineer

Backend Developer

Full-Stack Developer

Backend Developer

DevOps and Full-Stack Developer

Full-Stack Developer

Certificates

PCAP™ – Certified Associate Python Programmer

An Introduction to Academic Writing in English

Scrum Fundamentals Certified

PostgreSQL Database Technologies Diploma

Languages

Interests