Beta

Daniel Belarmino

Certified

Developer

- | Portugal

Technologies

My Portfolio Highlights

My New Course

Understanding Cloud Computing

My New Course

Understanding Cloud Computing

Insightful puzzle solver, piecing together data fragments to reveal the big picture.

My Work

Take a look at my latest work.

course

Understanding Cloud Computing

course

Understanding Cloud Computing

My Certifications

These are the industry credentials that I’ve earned.

Data Engineer Associate

DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

My Work Experience

Where I've interned and worked during my career.

Marley Spoon | Aug 2022 - Feb 2025

Fullstack engineer

Integration Data Pipeline Leadership: Led implementation of referral reward system processing, designing event-driven architecture using Kafka for real-time data streaming between Promotions, Payments, and Marketing systems Database & API Development: Built and optimized PostgreSQL schemas, developed GraphQL APIs, and implemented efficient data flows supporting high-volume promotional campaigns and payment processing Full Stack Implementation: Developed features using Elixir, Ruby on Rails, and React, ensuring seamless integration between backend data processing and frontend user experience Cross-Functional Collaboration: Worked directly with Promotions and Payments teams translating business requirements into scalable technical solutions Production Ownership: Managed complete development lifecycle from coding to production deployment, implementing robust validation and testing processes Skills: Elixir • Ruby on Rails • PostgreSQL • Kafka • GraphQL • React • Event- Driven Architecture

Indie Campers | Aug 2020 - Jul 2022

FullStack Developer

Application Development | Database Optimization | Team Leadership Performance Optimization: Enhanced Ruby on Rails application with PostgreSQL database, implementing Redis caching and Sidekiq for background processing, significantly improving data processing efficiency Frontend Integration: Contributed to Vue.js application ensuring seamless data flow between backend services and user interfaces Stakeholder Collaboration: Worked directly with business stakeholders to design and implement platform solutions, translating data requirements into technical specifications Team Development: Mentored new developers on database design patterns, data handling best practices, and system architecture principles Agile Development: Operated in Scrum framework with PM, Tech Lead, and development team, ensuring timely delivery of data-driven features Skills: Ruby on Rails • Vue.js • PostgreSQL • Redis • Sidekiq • Scrum

Homem Máquina | Jul 2019 - Aug 2020

Full Stack Developer

Maintaining and developing new features in systemns using PHP (Laravel), Ruby on Rails, JavaScript (Jquery and Angular) and database Postgres and SQL

MTI Studio | Apr 2018 - Mar 2019

developer

Developing simple games using C✅ and Unity

Laboratório Monstro | Nov 2012 - Jan 2018

Owner

Created and developed a small decoration business Managed the company and created products

Rio 2016 - Comitê Organizador dos Jogos Olímpicos e Paralímpicos | Dec 2015 - Aug 2016

AVRM

Helped to test and check the handball software

IBOPE DTM Marketing de Relacionamento | Oct 2012 - Oct 2014

Data Engineer | Analyst

using T-SQL (SQL Server) and PL/SQL (Oracle), extracting and transforming data from multiple sources including databases and CSV files Data Warehouse Implementation: Built robust data pipelines integrating information into data marts and warehouses, establishing single source of truth for business intelligence and analytics Automation & Reporting: Created automated reporting systems and technical documentation supporting tax credit recovery processes for major Brazilian telecommunications companies System Integration: Developed data processing tools using .NET framework, enabling seamless integration between various business systems Data Quality Assurance: Implemented data validation and monitoring processes ensuring high-quality, consistent data for critical business decisions Skills: T-SQL • PL/SQL • ETL • Data Warehousing • .NET • Business Intelligence

Telecheque | Mar 2009 - Oct 2012

Data Engineer | Analyst

Real-Time Data Processing | API Integration | Financial Systems Real-Time ETL Systems: Developed and maintained ETL workflows using T- SQL, PL/SQL, and .NET, supporting both real-time and batch processing for financial risk analysis API Data Integration: Built systems consuming and transforming third-party API data, enriching internal datasets for check authorization and fraud prevention algorithms Business Logic Implementation: Managed frequent updates to data transformation rules, ensuring compliance with evolving financial regulations and operational requirements System Reliability: Implemented comprehensive monitoring and validation mechanisms maintaining data integrity during continuous system updates and schema changes Cross-Functional Collaboration: Worked closely with business analysts translating changing requirements into scalable database procedures and data transformations Skills: T-SQL • PL/SQL • .NET • API Integration • Financial Data Processing • Real-time Systems

HP | Jan 2007 - Jan 2009