douglas vieira dos santos
@douglasvieiradossant
Systems architect and software engineer specializing in scalable, resilient microservices architectures.
BrazilWhat I'm looking for
I am a Systems Architect with over 16 years of experience designing scalable, resilient, microservices-oriented enterprise solutions and modernizing legacy systems. I specialize in API implementation, enterprise integrations, and defining architectural standards and governance for mission-critical environments.
My recent work includes designing backend architectures with ASP.NET Core for banking, integrating with Temenos T24, and deploying document synchronization services that processed over one million records, reduced processing time by ~45%, and achieved near 99.9% availability. I also have strong cloud experience with AWS and GCP and practical exposure to financial systems integration and high-availability design.
I lead and mentor engineering teams, drive architectural decisions, and ensure operational stability and compliance. I am analytical, results-driven, and focused on delivering secure, efficient solutions that support business needs and regulatory requirements.
Experience
Work history, roles, and key accomplishments
Led backend architecture and production support for Itaú Private Bank project, implementing ASP.NET Core services, Identity-based auth, and integrations with Temenos T24 to improve processing reliability and achieve ~99.9% availability while reducing document processing time by ~45%.
Senior Full-Stack Engineer
JOTA
Dec 2020 - May 2022 (1 year 5 months)
Developed scalable backend services in Python (Django/DRF) with Celery for async processing, integrated third-party services (Iugu, Mailchimp) and cloud platforms (GCP, AWS), and standardized Dockerized deployments to improve performance and ops reliability.
Senior Systems Analyst
Guichê Virtual
Feb 2018 - Dec 2020 (2 years 10 months)
Enhanced Android ticketing and operations app (Java/Kotlin) with Bluetooth printing and operational controls, and contributed to B2B ETL performance optimization using BigQuery, StitchData, and PostgreSQL to improve field efficiency and data consolidation.
Technical Lead
Clarivi_Agro
Oct 2017 - Feb 2019 (1 year 4 months)
Led integrations between Clarivi systems and John Deere dealerships, designed AWS environment (EC2, RDS, Route 53) and implemented .NET C# integrations to align solutions with client technical requirements.
Technical Lead
Projetas Soluções Integradas
Jan 2018 - Jan 2019 (1 year)
Architected and developed a .NET C# API to integrate document workflows with DocuSign for Tribanco, led technical team activities, and modernized legacy systems to streamline electronic signature and proposal processing.
Senior Software Developer
Interação Tecnologia
Nov 2014 - Oct 2017 (2 years 11 months)
Delivered corporate and financial projects including system modernization, banking integrations, and e-commerce solutions using .NET C# and Delphi, integrating with fiscal systems and Brazilian banking APIs to improve automation and reliability.
Education
Degrees, certifications, and relevant coursework
XP Educação
MBA in Artificial Intelligence, Artificial Intelligence / Machine Learning
2024 - 2024
Completed an MBA in Artificial Intelligence with emphasis in Machine Learning, focusing on applied ML techniques and AI-driven solutions.
Centro Universitário do Triângulo
Bachelor's Degree in Information Systems, Information Systems
Bachelor's degree in Information Systems with coursework in software engineering, databases, and systems integration.
Availability
Location
BrazilAuthorized to work in
Job categories
Skills
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