Fabio is available for hire
Hire FabioFabio Bressler
Verified Expert in Engineering
Data Engineer and Developer
Location
Porto Alegre - State of Rio Grande do Sul, Brazil
Toptal Member Since
June 24, 2020
Backed by an MBA in strategic leadership for business, Fabio is a certified blockchain expert with a professional development and architecture background. He brings several years of experience in database modeling, data handling, and performance tuning related to data ingestion and extraction, along with more recent blockchain design and implementation. Furthermore, Fabio specializes in using cloud architecture to evaluate and offer alternatives to data-driven apps, mainly AWS, at the moment.
Portfolio
Nethermind
Python, PostgreSQL, Google Cloud Platform (GCP), Data Analysis...
Inveniam Capital Partners, Inc.
Data Architecture, ETL, Solidity, Ethereum, Ethers.js, TypeScript, Node.js...
Seaber Oy
PostgreSQL, SQL, GraphQL, Python, Node.js, TypeScript, APIs...
Experience
Availability
Part-time
Preferred Environment
Database Architecture, Data Architecture, Amazon Web Services (AWS), SQL, Solidity, Node.js, TypeScript, GraphQL, Blockchain, PostgreSQL
The most amazing...
...and exciting recent app I've built from design to implementation was a set of data and back-end processes to persist certificates in the blockchain.
Work Experience
Senior Blockchain Data Engineer
2022 - PRESENT
Nethermind
- Developed a full blockchain data extraction application for DeFi lending and borrowing pools for opportunity trading analysis.
- Led team members for application and engineering best practices for a software release, test code coverage, and GitHub automation pipeline validations.
- Provided consulting and overall systems design on company internal data products like pipeline data extractions for HR and data structure refactoring for best performance and data usage.
Technologies: Python, PostgreSQL, Google Cloud Platform (GCP), Data Analysis, Data Architecture, System Design, Apache Airflow, Data Pipelines, Pandas, RDBMS, Data Visualization, Databases, Data Engineering, Relational Databases, Database Transactions, Git, Docker, SQLAlchemy, Debugging, Shell Scripting, Technical Design, Technical Drawing, Flask, Amazon RDS, Data Processing, Data Processing Automation, Blockchain Platforms, CSV, Scripting, Scripting Languages, Data Modeling, REST, Database Triggers, Notion, Retool, Statistics, Good Clinical Practice (GCP), Data Warehouse Design, Data Warehousing, Google BigQuery, Architecture, Data-driven Design, Scalability, Relational Database Services (RDS), JSON, Unix Shell Scripting, GitHub, CI/CD Pipelines, Excel 2016, Big Data, Amazon EC2, Data Transformation, Database Structure, Transactions, Data, Exploratory Data Analysis, Data Science, Database Performance, Node.js, Networks, SQL Triggers, APIs, AWS IAM, Amazon Virtual Private Cloud (VPC), Amazon CloudWatch, BigQuery, Terraform, API Design, Web Scraping, Cryptocurrency, REST APIs
Database Architect | Back-end Solutions Architect
2021 - 2022
Inveniam Capital Partners, Inc.
- Delivered the technical documentation for a blockchain application architecture with client onboarding, a blockchain Oracle/Node.js integration, and a marketplace for general-purpose client data.
- Implemented a POC for IoT data consumption, including the processing and delivering perpetual certificates in Ethereum Blockchain using Solidity, Node.js/TypeScript, an Ethers.js library, and a Hardhat framework.
- Created the automated AWS Lambda (serverless) API exposure for a Chainlink hackathon and how-to documentation for the event.
- Started a blockchain Oracle/Node.js builder on the API3 stack to spin up general-purpose Oracle devices for a given API specification.
Technologies: Data Architecture, ETL, Solidity, Ethereum, Ethers.js, TypeScript, Node.js, Data Pipelines, RDBMS, Data Migration, Databases, Data Engineering, Relational Databases, SQL Stored Procedures, Database Transactions, Git, Docker, SQLAlchemy, Debugging, Shell Scripting, Query Optimization, Technical Design, Technical Drawing, Flask, Amazon RDS, AWS Lambda, Data Processing, Data Processing Automation, Blockchain Platforms, Microsoft Excel, CSV, Scripting, ETL Tools, Scripting Languages, System Design, Apache Airflow, Data Modeling, Database Administration (DBA), REST, Data Mining, Database Triggers, Database Optimization, Data Integration, Amazon S3 (AWS S3), Amazon Athena, Data Warehouse Design, Data Warehousing, Architecture, Data-driven Design, NoSQL, Telemetry, Relational Database Services (RDS), JSON, Unix Shell Scripting, GitHub, CI/CD Pipelines, Excel 2016, Amazon EC2, Data Transformation, Message Queues, Database Structure, Data, Exploratory Data Analysis, Data Science, ELT, Networks, Amazon Aurora, SQL Triggers, APIs, AWS IAM, Amazon Virtual Private Cloud (VPC), Amazon CloudWatch, API Design, Web Scraping, Infrastructure as Code (IaC), REST APIs
Database Expert and Back-end Integrations
2020 - 2022
Seaber Oy
- Implemented row-level security functionality on AWS RDS PostgreSQL to enable proper data visualization and enhanced performance for application clients. Also helped with to set up an adequate logging database.
- Identified PostgreSQL data reading bottlenecks and adjusted indexes for better performance. Added automated checks to the existing CI automation pipeline to prevent future performance gaps.
- Planned and implemented a back-end API integration with external partners using Node.js/TypeScript and GraphQL to fetch and load data into the application database.
- Implemented a Python web scraper to extract a ship's information and load it as a read-only data store.
Technologies: PostgreSQL, SQL, GraphQL, Python, Node.js, TypeScript, APIs, Amazon Web Services (AWS), Pandas, RDBMS, Data Migration, Databases, MySQL, Data Engineering, ETL, Relational Databases, SQL Stored Procedures, Database Transactions, Git, Docker, SQLAlchemy, Debugging, Shell Scripting, Query Optimization, Technical Drawing, Flask, Amazon RDS, Data Processing, Data Processing Automation, Microsoft Excel, CSV, Scripting, ETL Tools, Scripting Languages, Data Modeling, Database Administration (DBA), REST, Database Triggers, Database Optimization, Data Integration, Amazon S3 (AWS S3), Data Warehouse Design, Data Warehousing, Architecture, Data-driven Design, Relational Database Services (RDS), JSON, Unix Shell Scripting, GitHub, XML, CI/CD Pipelines, Excel 2016, Amazon EC2, Data Transformation, Message Queues, Database Structure, Transactions, Data, Data Science, ELT, Database Performance, Amazon Aurora, SQL Triggers, AWS IAM, Amazon Virtual Private Cloud (VPC), Amazon CloudWatch, API Design, Web Scraping, Infrastructure as Code (IaC), REST APIs
Technical and People Leader | Architect
2019 - 2020
ADP
- Managed a cross-country team for a reporting tool integration main application, bringing more organization and improvements on legacy application components to docker and microservices with better process automation using Jenkins.
- Engaged the team as an architect to follow best practices on componentization for public cloud readiness by following microservices design with full automation—from the software to database decoupling with API first design.
- Oversaw the data streaming system evolution to deliver better orchestration on app deployments and provided architectural design recommendations for developers to achieve the best performance results in data refreshes.
- Engaged with the reporting application team to build AWS RDS Oracle constructions for our public cloud stacks.
Technologies: Python, Database Architecture, Data Architecture, Database Modeling, Database Design, AWS CloudFormation, Amazon Web Services (AWS), ADP, Data Visualization, Data Migration, Databases, Data Engineering, Relational Databases, Oracle PL/SQL, Database Transactions, Git, Docker, Oracle, Apache, Technical Design, Technical Drawing, Amazon DynamoDB, Amazon RDS, AWS Lambda, Data Processing, Data Processing Automation, Microsoft Excel, CSV, Scripting, ETL Tools, Scripting Languages, System Design, Data Modeling, Database Administration (DBA), REST, Data Mining, Database Triggers, Database Optimization, Oracle Database, Data Integration, Amazon S3 (AWS S3), Amazon Athena, Amazon Elastic MapReduce (EMR), Spark, Amazon EKS, Data Warehouse Design, Data Warehousing, Architecture, Server Migration, Data-driven Design, BPM, Scalability, Relational Database Services (RDS), JSON, PL/SQL Tuning, Unix Shell Scripting, GitHub, XML, CI/CD Pipelines, Big Data, Amazon EC2, Data Transformation, Apache Kafka, Redshift, Database Structure, Transactions, Data, Exploratory Data Analysis, Data Science, Networks, SQL Triggers, Oracle DBA, APIs, Amazon CloudWatch, API Design, Infrastructure as Code (IaC), REST APIs
SQL Performance Specialist | DBA
2015 - 2018
ADP
- Engaged production support on SQL performance tuning for critical clients by fixing SQL on demand by providing recommendations to development team on indexing, data arrangements, and clean ups, among others.
- Performed database administration engagements like cloning, backup, restorations, and data optimization (database refreshing).
- Worked as a key person to promote databases to cloud infrastructure (AWS) using RDS and CloudFormation to create a stack pattern across environments.
- Discussed, as a member of the architecture team, application evolution and transposition from a monolithic approach to microservices and serverless stacks and built a proof of concept for some application components.
Technologies: AWS Cloud Architecture, AWS CloudFormation, Amazon Web Services (AWS), MongoDB, Database Architecture, Database Modeling, Data Architecture, Performance Tuning, Oracle RDBMS, ADP, RDBMS, Data Migration, Databases, Data Engineering, ETL, Relational Databases, Oracle PL/SQL, SQL Stored Procedures, Database Transactions, Windows, Git, Oracle, Apache, Debugging, Shell Scripting, Query Optimization, Technical Design, Technical Drawing, Data Processing, Data Processing Automation, Microsoft Excel, CSV, Scripting, Scripting Languages, Data Modeling, Database Administration (DBA), Database Triggers, Database Optimization, Oracle Database, Data Integration, Architecture, Server Migration, Data-driven Design, BPM, Scalability, Relational Database Services (RDS), PL/SQL Tuning, Unix Shell Scripting, XML, Data Transformation, Database Structure, Transactions, Data, Data Science, ELT, Database Performance, SQL Triggers, Oracle DBA
Lead Back-end Developer
2009 - 2014
ADP
- Evolved application integration, adding version control and an intelligent installation process to sync up releases automatically by single command triggering.
- Implemented Java/Oracle database interactions to process asynchronous SOAP calls for heavy back-end calculations on external systems.
- Oversaw software evolution and team performance evaluation accommodating more integration partners in the roadmap scope.
Technologies: Database Architecture, PL/SQL, Data Architecture, Java, SQL, Oracle RDBMS, ADP, RDBMS, Data Migration, Databases, Data Engineering, ETL, Relational Databases, Oracle PL/SQL, SQL Stored Procedures, Database Transactions, Windows, Git, Oracle, Apache, Debugging, Shell Scripting, Query Optimization, Technical Design, Technical Drawing, Data Processing, Microsoft Excel, CSV, Scripting, Scripting Languages, Data Modeling, Database Administration (DBA), Database Triggers, Database Optimization, Oracle Database, Data Integration, Data Warehouse Design, Data Warehousing, Architecture, Data-driven Design, BPM, Scalability, PL/SQL Tuning, Unix Shell Scripting, XML, Excel 2016, Data Transformation, Database Structure, Transactions, Data, Exploratory Data Analysis, Data Science, ELT, Database Performance, SQL Triggers, Oracle DBA
Back-end Database Developer
2007 - 2008
ADP
- Developed an application to manage the metadata catalog for external systems that were to be integrated with a reporting system.
- Tracked and fixed bugs logged into a clear quest tool for the main system.
- Synchronized the application evolution and metadata external application evolution, which were running different versions and evolving.
Technologies: Data Architecture, Database Architecture, Database Modeling, SQL, Oracle RDBMS, ADP, RDBMS, Data Migration, Databases, MySQL, Data Engineering, ETL, Relational Databases, Oracle PL/SQL, SQL Stored Procedures, Database Transactions, Windows, Oracle, Apache, Debugging, Shell Scripting, Technical Drawing, Data Processing, Microsoft Excel, CSV, Scripting, Scripting Languages, Data Modeling, Database Triggers, Oracle Database, Data Integration, Data Warehouse Design, Data Warehousing, PL/SQL Tuning, Unix Shell Scripting, XML, Data Transformation, Transactions, Data, ELT, Database Performance
System Analyst | QA
2005 - 2007
ADP
- Analyzed the requirements needed by the pre-employment screening system in the development stage and engaged developers in coding properly according to the business rules.
- Helped with database definitions and relationships to accommodate proper table structures and relationships.
- Contributed to QA activity, helping to capture defects or missing requirements to enhance and evolve the application.
Technologies: PHP, Analysis, Quality Assurance (QA), PL/SQL, Oracle RDBMS, ADP, Oracle PL/SQL, Windows, Oracle, Apache, Perl, Debugging, CSV, Scripting, Scripting Languages, Oracle Database, PL/SQL Tuning, Unix Shell Scripting
Developer
1999 - 2005
UNISINOS
- Collaborated on building the university website using PHP and scripting for content management.
- Built a distance learning environment for university classes using Perl scripting and a PostgreSQL database.
- Made a web file storage system for students that enabled their files to be available from everywhere using Perl scripting and server storage management.
Technologies: Linux, Perl, HTML, PostgreSQL, Apache, JavaScript, PHP, Oracle PL/SQL, Windows, Java, CSV, Scripting, Scripting Languages, Data Mining, Unix Shell Scripting
Experience
Data Streaming Application
A data streaming system to enable the federation of catalogs for external systems to integrate with the reporting tool. I was a technical leader and architect on the streaming process evolution, driving it to the proper orchestration process into automated deployment.
Reporting Tool
A corporate tool for ad-hoc report template creation with asynchronous execution that other applications can plug into. Acted as an Oracle back-end developer, system analyst, technical leader, and SQL performance expert.
Catalog Integration Application
An Oracle RDBMS-based system with stored procedures to manage metadata with reporting tool integrations. I was the lead developer and architect for the application that was responsible for integrating external systems with the reporting tool and building customized reports through a wizard.
Pre-employment Workflow Application
I used PHP both as the front and back end with an Oracle database application for this employment screening application. I also acted as a system analyst to evaluate the requirements and help developers with the implementation, quality assurance, and database back-end development.
Skills
Languages
SQL, Python, TypeScript, XML, HTML, JavaScript, PHP, Java, Perl, Stored Procedure, Solidity, GraphQL, ECMAScript (ES6), Snowflake
Libraries/APIs
Pandas, REST APIs, Node.js, SQLAlchemy, Web3.js
Tools
Microsoft Excel, GitHub, Excel 2016, Git, Apache Airflow, Amazon Athena, Amazon CloudWatch, Jenkins, Apache, Erwin, AWS CloudFormation, AWS Glue, Retool, Notion, Amazon Elastic MapReduce (EMR), Amazon EKS, AWS IAM, Amazon Virtual Private Cloud (VPC), BigQuery, Terraform
Paradigms
ETL, Database Design, Data-driven Design, Data Science, REST, Microservices, Management, Good Clinical Practice (GCP)
Platforms
Linux, Oracle, Amazon Web Services (AWS), Windows, Blockchain, Google Cloud Platform (GCP), Amazon EC2, Docker, Oracle Database, Ethereum, AWS Lambda, Blockchain Platforms, Apache Kafka
Storage
Oracle PL/SQL, PostgreSQL, Database Modeling, Database Transactions, Relational Databases, SQL Stored Procedures, Oracle RDBMS, Databases, Database Architecture, Data Integration, RDBMS, JSON, Database Structure, Database Performance, SQL Triggers, Oracle DBA, MySQL, Database Triggers, Amazon Aurora, MongoDB, PL/SQL, Database Administration (DBA), Amazon DynamoDB, SQL Performance, Data Pipelines, Amazon S3 (AWS S3), NoSQL, Redshift
Other
Shell Scripting, Data Engineering, Query Optimization, Debugging, Data Analysis, Data Modeling, Data Architecture, APIs, Data Processing, Scripting, ADP, Data Migration, Scripting Languages, Data Warehouse Design, Data Warehousing, Relational Database Services (RDS), PL/SQL Tuning, Unix Shell Scripting, CI/CD Pipelines, Data Transformation, Transactions, Data, ELT, API Design, Technical Design, Technical Drawing, Database Optimization, Amazon RDS, Data Processing Automation, CSV, Architecture, Server Migration, BPM, Scalability, Big Data, Message Queues, Exploratory Data Analysis, Networks, Web Scraping, Data Mining, Quality Assurance (QA), Analysis, Performance Tuning, AWS Cloud Architecture, Leadership, Business, IT Business Analysis, Ethers.js, Data Visualization, AWS Lake Formation, ETL Tools, System Design, Statistics, Google BigQuery, Telemetry, Big Data Architecture, Infrastructure as Code (IaC), Cryptocurrency
Frameworks
Flask, Spark
Education
2012 - 2013
Master of Business Administration Degree in Strategic Leadership
The Superior School of Advertising and Marketing (ESPM) - Porto Alegre, Rio Grande do Sul, Brazil
1994 - 2004
Bachelor of Science Degree in Computer Science
The University of the Sinos Valley (UNISINOS) - São Leopoldo, Rio Grande do Sul, Brazil
Certifications
JULY 2023 - PRESENT
Formação Data Warehouse com Redshift, BigQuery e SnowFlake
Udemy
OCTOBER 2022 - PRESENT
Build a Secure Data Lake in AWS using AWS Lake Formation
Udemy
AUGUST 2022 - PRESENT
Certified Blockchain Expert
Blockchain Council
FEBRUARY 2022 - PRESENT
Ethereum and Solidity — The Complete Developers Guide
Udemy
JUNE 2021 - PRESENT
The Complete Node.js Developer Course (Third Edition)
Udemy
AUGUST 2015 - PRESENT
Oracle Database 12c: Install
Oracle University
JULY 2015 - PRESENT
Oracle Database 12c: Administration
Oracle University
SEPTEMBER 2014 - PRESENT
Agile Project Management (Scrum)
ADP In House
Collaboration That Works
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