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Lucas sapucahy

@lucassapucahy

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Experienced full‑stack software developer specializing in scalable payment systems.

Brazil

Message

What I'm looking for

I seek a role where I can design and build scalable payment or high‑availability systems, drive architecture, and work with cloud/DevOps practices in a collaborative team.

I am an experienced full‑stack software developer with nearly 7 years building and maintaining large‑scale, robust systems, including applications serving over 5 million users. I focus on designing reliable, high‑throughput services and improving operational efficiency in complex environments.

My background spans payments, onboarding, ERP, and educational platforms where I led architectural efforts, designed new services (including payment methods and dispute services), and implemented features using .NET, C#, SQL, MongoDB, Kubernetes, AWS, Terraform, Kafka, and RabbitMQ.

I bring a pragmatic, collaborative approach to engineering, emphasizing well‑tested microservices, infrastructure as code, and performance improvements to deliver scalable solutions for global markets.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

BairesDev

Dec 2022 - Present (2 years 11 months)

Developed and maintained a U.S. payment system focused on ACH transactions and contributed to architecture and design of two new payment methods (RCS and RPP). Improved reliability and feature delivery across microservices.

.NET Core C++SQL Server AWS Terraform Microservices Dapper Entity Framework Jenkins

Software Engineer

XP Inc.

Aug 2021 - Sep 2022 (1 year 1 month)

Implemented onboarding and account/card features and led architectural design of a purchase dispute service, enhancing account lifecycle workflows and system resiliency.

.NET Core MongoDB Kafka RabbitMQ Azure DevOps Datadog Microservices xUnit DDD

Software Developer

Kroton

May 2020 - Jul 2021 (1 year 2 months)

Developed and maintained the student payment system and collaborated on redesigning invoice issuance, streamlining financial workflows and improving operational efficiency.

.NET Core Kubernetes Docker RabbitMQ Azure Service Bus Microservices xUnit

Software Developer

Fitcard

Jul 2018 - May 2020 (1 year 10 months)

Implemented features and fixed bugs in an ERP system and optimized reconciliation performance using efficient data structures, improving throughput and reliability.

.NET JavaScript SQL Server Dapper Bootstrap Performance Optimization Debugging

Software Developer Intern

Golden Skill IT Solutions

Jan 2018 - Jun 2018 (5 months)

Contributed to a medical clinic management system covering client, treatment, and scheduling modules, supporting feature development and bug fixes.

.NET JavaScript SQL Server Entity Framework Bootstrap Software Development

Education

Degrees, certifications, and relevant coursework

Universidade Paulista

Bachelor's Degree, Systems Analysis and Development

2018 - 2020

Completed a Bachelor’s Degree in Systems Analysis and Development from January 2018 to June 2020, focusing on software development and systems analysis.