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Adryen Oliveira

@adryenoliveira

I build scalable, high-performance Java systems for financial and security platforms.

Brazil
Message

What I'm looking for

I'm looking to keep evolving as a software engineer by building high-performance, scalable applications and delivering maximum value.

At Accenture, I build secure internal systems using Java and Spring Boot, including anti-fraud decision-engine versioning that increased team efficiency by 80% and dual-confirmation workflows that reduced human error by 80%.

Previously at Fderivs, Cresol, and EISA, I improved real-time financial data processing, reduced portfolio-risk calculations from 20 minutes to 3 minutes, optimized APIs by about 50%, and increased platform speed by about 70%.

Experience

Work history, roles, and key accomplishments

Accenture logoAC
Current

Senior Software Engineer

Sep 2025 - Present (1 year 1 month)

Engineered features to strengthen internal system security and team performance, including a new insertion and versioning feature for machine learning decision engines and a dual-confirmation feature for administrative actions. Implemented a secure authentication system synchronized with Microsoft accounts.

FD

Software Engineer

Fderivs

Mar 2023 - Sep 2025 (2 years 6 months)

Engineered key product enhancements for the core platform, including an automated financial insights tool and a real-time data migration system. Optimized the risk monitoring system, reducing processing times from 20 minutes to 3 minutes.

CR

Software Engineer

Cresol

Jan 2022 - Oct 2022 (9 months)

Optimized core API systems and engineered an audit logging system for internal administration. Resolved critical production issues, reducing mean time to resolution and minimizing system downtime.

EI

Software Engineer

EISA

Feb 2021 - Jan 2022 (11 months)

Developed key features for the core platform and executed performance optimizations that increased system speed by approximately 70%, driving client acquisition.

Education

Degrees, certifications, and relevant coursework

FIAP logoFI

FIAP

Postgraduate Certificate, Machine Learning Engineering

2025 -

Pursuing a Postgraduate Certificate in Machine Learning Engineering, expected to complete in 2026.

FC

FATEC – São Paulo State Technological College

Associate of Science, System Analysis and Development

2019 - 2024

Earned an Associate of Science in System Analysis and Development.

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