
Daniel Fonseca Reis
@danielfonsecareis
I build scalable backend microservices for financial products using Go, AWS, Postgres, and DynamoDB.
What I'm looking for
I'm building, maintaining, and evolving highly scalable microservices at Pismo, primarily using Go, AWS, Postgres, and DynamoDB.
Previously at Rain Instant Pay and Bexs Banco, I migrated DynamoDB data to Postgres, developed Go microservices, and built gRPC and REST services for instant-money exchanges in Brazil.
Across more than 13 years in software development, including seven years at CI&T, I've worked across backend systems, cloud, DevOps, technical refinement, code review, and team training. I enjoy coding, shaping solutions, helping teammates, and tackling complex challenges with international teams.
Experience
Work history, roles, and key accomplishments
Building, maintaining, and evolving highly scalable microservices primarily using Go, AWS, Postgres, and Dynamo.
Collaborating with cross-functional teams to ensure the delivery of robust and efficient solutions.
Contributing to the continuous improvement of development processes.
Worked as a Backend Developer, initially migrating data from DynamoDB to Postgres using AWS Lambda (Python).
Developed new features and resolved legacy bugs in the company's microservices (Go).
Collaborated closely with front-end engineers to build administrative portals for clients to manage their businesses.
Utilized a technical stack that included Go, AWS, DynamoDB, Postgres, Kafka, Datadog,
Worked as a Backend Engineer, building gRPC and REST microservices that integrate with BACEN (Brazil Central Bank) players, creating a product that enables Brazilians to make or receive instant money exchanges.
Utilized a technical stack including GCP (Google Cloud Platform), AWS, Go, Python, Postgres, and Firestore.
Collaborated in designing and implementing backend solutions to meet financial
Worked as a Software Engineer for 7 years, utilizing various technologies including .NET, Swift-iOS, Java, Google Cloud Platform (GCP), SQL Server, and Python.
Built and maintained numerous projects, ranging from an investment bank, construction sales system, schools management, to a credit card bank app.
In my last 3 years there, I was responsible for technical refinement, delivery, training, c
Worked as a .NET Software Developer, contributing to the development of a doctor appointment scheduler for health insurance companies.
Built and maintained a small software application to manage support requests.
Collaborated with the team to ensure efficient and effective software solutions.
Education
Degrees, certifications, and relevant coursework
Full Cycle
Pós-graduação Lato Sensu - MBA, Artificial Intelligence for software engineering
2025 - 2026
ESAB - Escola Superior Aberta do Brasil
Engineer's degree, Computer Software Engineering
2008 - 2010
Centro Universitário Metodista Izabela Hendrix
Bacharel, Computer/Information Technology Administration and Management
2000 - 2004
Centro Universitário Metodista Izabela Hendrix
Bachelor's degree, Computer/Information Technology Administration and Management
2000 - 2004
Completed a Bachelor's degree in Computer/Information Technology Administration and Management.
COTEMIG - Colégio e Faculdade
Associate's degree, Information Technology
1997 - 1999
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Salary expectations
Job categories
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