Daniel De Oliveira Caliari
Belo Horizonte
Summary
Versatile Java 21 engineer with comprehensive experience developing effective strategies to optimize backend systems. Proven success developing web applications with Java and Spring as well as utilizing innovative methodologies, such as Agile. Self-driven specialist; capable of effectively managing services to determine potential deficiencies and co-ordinate corrective actions to increase operational productivity. Immaculate communication skills with proficiency in various languages, including Portuguese (Native), English (Expert), and German (Beginner). Proven expertise in: Software Development Performance Analysis Project Planning and Architecture Java 21 Programming Troubleshooting & Issue Resolution Code Quality Assurance
Overview
9
9
years of professional experience
1
1
Certification
Work History
Software Engineer
Bitso
08.2022 - 02.2025
- Company Overview: crypto financial exchange company
- Works planning and developing modern software platforms on AWS Cloud that are built by using Java 17/21, Spring Boot, Micronaut, Python 3.7, Golang, Typescript and other tools used in platforms
- Worked in regulatory features defined by Brazil Central Bank transactions, Pix indirect integration with third partner provider, and on eFX products, B2B, to generate revenue on crypto related to betting and gaming on Brazil
- Worked in the creation of tools and gradle plugins to control components and dependency management similar to SBOM concept
- Worked in the process of automatization of internal platforms, improving the agility and development experience in the Bitso ecosystem
- Worked, as a backend engineer, on a project to improve user attractivity for Bitso clients
- Crypto financial exchange company
Senior Software Engineer
Itaú Unibanco Bank
05.2021 - 08.2022
- Works planning and developing modern software platforms on AWS Cloud that are built by using Java 11, Spring Boot, Python 3.7, and other tools used in a microservice architecture
- Constantly provided key insights and well fitted knowledge for other team members so they can get a ramp up quickly and grow personally and professionally
Software Engineer
M4U
10.2020 - 05.2021
- Works on developing, planning and maintaining solutions designated for large Telecommunication companies
- Deals mainly with Java 8 and 11, microservices, Spring Framework, PostgreSQL and MS Server SQL
- Provided support for many legacy systems and worked on new custom features to supplement the legacy features
Software Engineer
Inter Bank
07.2019 - 10.2020
- Serve as Java 8 developer to utilize various technologies, such as Amazon AWS infrastructure, Spring framework, JUnit, JAssert, as well as Hibernate and Micro Service distributed architecture
- Collaborate with software development team on delivery of effective micro services
- Maintained top-tier system performance by utilizing Jmeter to carry out in-depth capacity and stress testing
Software Engineer
AvenueCode
02.2019 - 07.2019
- Delivered valuable assistance in creating and maintaining e-commerce application built with Java and Spring-MVC for Fortune 500 U.S
- Client to sell consumer electronics and appliances protection plans
- Identified major production issues via comprehensive root cause analysis and provided appropriate solutions in collaboration with distributed teams across US, Brazil, India, and Vietnam for large-scale customer base
- Oversaw all aspects of microservices, including order processing for sales within US and Europe via integration with multiple payment gateways
Software Engineer
FITec
11.2017 - 02.2019
- Played integral as development team member, utilizing Agile methodology as Java 8 programmer
- Executed various operational activities while maintaining compliance with high code quality, unit test, regression test, and code revision
- Identified new solutions for project to finish first place on Ericsson’s worldwide hackathon
- Ensured seamless REST API testing by employing OSGi tool, Camunda BPMN, JUnit, Postman, micro-services Cassandra architecture, and JavaScript
Intern at Unifei
Unifei
01.2016 - 02.2016
- Formulated stock system for UNIFEI, Campus Itabira, and infrastructure sector by using Java 8 EE language and framework Hibernate e PrimeFaces
Education
MBA Software and Solutions Architecture -
IGTI
Remote01.2022
MBA Broker Global -
Ibmec
Remote01.2021
Degree in Computer Engineering -
Federal University of Itajubá (Unifei)
Itabira, Brazil01.2017
Skills
- Java
- Python
- Hibernate
- Linux
- Web Application Development
- SQL
- Amazon Web Services (AWS)
- Spring Framework
- Spring Boot
- Micronaut
- Micro services
- REST API
- Synchronous communication
- Asynchronous communication
- Distributed platforms
- SOA
- SOLID
- Domain Driven Design
- Hexagonal Architecture
- Unit testing
- Performance analysis using JMeter
- Performance analysis using New Relic
- Performance analysis using Grafana
- Object-oriented programming
- Software development
- Programming
- API integration
- API development
Certification
Oracle Certified Associate (OCA), Java SE 8 Programmer
Timeline
Software Engineer
Bitso
08.2022 - 02.2025
Senior Software Engineer
Itaú Unibanco Bank
05.2021 - 08.2022
Software Engineer
M4U
10.2020 - 05.2021
Software Engineer
Inter Bank
07.2019 - 10.2020
Software Engineer
AvenueCode
02.2019 - 07.2019
Software Engineer
FITec
11.2017 - 02.2019
Intern at Unifei
Unifei
01.2016 - 02.2016
MBA Software and Solutions Architecture -
IGTI
MBA Broker Global -
Ibmec
Degree in Computer Engineering -
Federal University of Itajubá (Unifei)
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