Open to opportunities

Eldon Costa

@eldoncosta

Message

Software Engineer at ARCO building Kotlin services, Node.js BFFs, and React features across backend and frontend.

Brazil

Message

At ARCO, I develop backend services and APIs with Kotlin and Spring, and build Node.js BFFs that connect backend services around front-end needs. I also deliver end-to-end features with React.

At ADA, I shaped the architecture of educational platforms spanning LMS, LXP, ERP, gamification, and distributed services. I evolved SNS/SQS event-driven flows, set strategies for idempotency and retries, and supported critical integrations and production reliability.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

ARCO

Jun 2026 - Present (5 months)

Developed backend services and APIs with Kotlin and Spring, built Node.js BFFs, and delivered front-end features with React.

Kotlin Spring Framework NodeJS React API Design

Senior Software Engineer

ADA

Feb 2022 - Jun 2026 (4 years 4 months)

Provided technical leadership in architectural evolution of educational platforms, led event-driven architecture initiatives, and ensured reliability of critical integrations.

Distributed Systems Event Driven Architecture SNS Amazon SQS AWS Technical Leadership Observability Reliability

Software Engineer

COMPASSO UOL

Jun 2021 - Feb 2022 (8 months)

Developed scalable APIs and services for Livelo's Projeto Cegonha platform using Node.js, TypeScript, and MongoDB, and worked on integrations and automations in AWS environments.

NodeJS TypeScript MongoDB AWS Agile

Software Engineer

INOVALE TECNOLOGIA

Oct 2016 - Sep 2018 (1 year 11 months)

Developed real-time traceability and monitoring solutions for industrial environments and mines, implemented device integrations, and built low-latency systems and IoT solutions.

IoT Real Time Systems Monitoring Integration Low Latency Systems