I'm looking for a Senior .NET Backend Developer role focused on C#/.NET Core, REST APIs, legacy modernization, debugging, performance, API integration, messaging and CI/CD. I'm interested in remote opportunities with collaborative engineering teams and technically challenging backend systems.
Looking for a job
Joao Oliveira
@jwloliveira
Senior .NET Developer specializing in C#/.NET Core, REST APIs, legacy modernization, debugging, SQL and enterprise backend systems.
BrazilWhat I'm looking for
Software Engineer with 5+ years of experience in backend development, APIs, systems integration, debugging, and legacy modernization.
At DBServer, I worked on client projects for companies including Linx S.A., Banrisul, FAHZ/Ambev and AEL Sistemas/ELBIT Systems. I developed and maintained C#/.NET Core backend services and REST APIs, including automotive and dealership systems.
I also modernized legacy applications by converting Delphi functionality into C#/.NET Core services and APIs. My experience includes Azure DevOps, Git, CI/CD, SQL Server, Oracle, Kafka, debugging, testing and performance analysis.
Earlier in my career, I developed and tested C, Python and Lua software for safety-critical avionics systems, working with requirements, verification, debugging and validation under DO-178B processes.
I also have an engineering background in microelectronics, digital verification and RISC-V, including Synopsys VCS/Verdi.
Experience
Work history, roles, and key accomplishments
DS
Software Developer / Software Engineer
Jan 2019 - Apr 2024 (5 years 3 months)
Desenvolvi serviços backend C#/.NET Core e APIs REST/SOAP para sistemas automotivos. Modernizei aplicações Delphi para C#/.NET Core. Trabalhei com ADO.NET, SQL Server, Oracle e integrações XML. Realizei unit testing, debugging, root-cause analysis e otimização de performance. Atuei com CI/CD usando Azure DevOps/Git e mensageria Kafka.
DS
Software Engineer – Avionics Systems
Dec 2018 - Jun 2021 (2 years 6 months)
Developed and tested software components in C, Python and Lua for safety-critical avionics systems. Performed requirements analysis, verification, debugging, validation and code reviews under DO-178B / DAL-A and DAL-D processes.
Education
Degrees, certifications, and relevant coursework
SY
Synopsys
Purple Certification, Design Verification
Completed Synopsys Purple Certification in Design Verification Track in July 2026.
ID
IBAT College Dublin
English Language Studies, English
2017 - 2017
US
Universidade Federal do Rio Grande do Sul
Master of Science, Microelectronics
M.Sc. in Microelectronics from UFRGS, Brazil.
US
Universidade Federal do Rio Grande do Sul
Specialization, Microelectronics
2024 - 2025
Specialization in Microelectronics with RF/Analog track, 720 hours, from UFRGS Institute of Informatics.
US
Universidade Estadual do Rio Grande do Sul
Bachelor of Science, Computer Engineering
B.Sc. in Computer Engineering from UERGS, Brazil.
Tech stack
Software and tools used professionally
Availability
Looking for a job
Location
BrazilAuthorized to work in
Salary expectations
40k+ EUR
Social media
Job categories
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