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Daniel Belarmino

Daniel Belarmino

Certified

Developer

- | Portugal

Technologies

My Portfolio Highlights

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

My Certifications

These are the industry credentials that I’ve earned.

Data Engineer Associate

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
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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

Tester

Developed and run test cases for a specific application

Dix | Jan 2006 - Jan 2007

Develper

Developed and maintained projects in Visual Basic

Hospital e Maternidade Assunção - Rede D'Or São Luiz | Jun 2005 - Jan 2006

Developer

Developed and maintained projects in Visual Basic

HP | Jan 2004 - Jun 2005

Developer

Developed and maintained projects in Visual Basic

TecBan - Tecnologia Bancária S.A. | Feb 2003 - Dec 2003

Developer

Developed and maintained projects in Visual Basic

iTech | Aug 1999 - Jan 2003

Developer

Developed and maintained projects in Visual Basic

My Education

Take a look at my formal education

DataEngineer | DataAnalystDataCamp | 2025
Bootcamp, Node, React e React-nativeRocketseat | 2020
Ux Design, Design and Visual CommunicationHow Bootcamps | 2020
full stack developer, Tecnologia da InformaçãoLe Wagon | 2019
Bacharelado, Ciência da ComputaçãoUniversidade Metodista de São Paulo | 2002

About Me

Daniel Belarmino

Experienced Full Stack Developer with Data Engineering expertise, combining 6+ years of data pipeline development with modern web application architecture. Specialist in building end-to-end solutions that handle complex data flows while delivering ex

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