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Filipe Fernandes

@filipefernandes

Full Stack Developer at SÓ Multas / Tamojunto, connecting payment systems and tracking 80% of qualified leads.

At SÓ Multas / Tamojunto, I led end-to-end integration projects that connected marketing and sales, increasing qualified lead volume by about 60% and enabling tracking of about 80% of qualified leads across their journey.

Previously at SÓ Multas, I redesigned the billing model across four payment gateways and developed a unified checkout with automatic failover. I also built an AWS serverless webhook and reconciliation pipeline to prevent orphan transactions.

As a freelancer, I delivered a social network for developers, from database modeling through API and back-end integration. Earlier, at Jabil Ind. Eletroeletrônica, I developed Python automations for payment terminal workflows and reduced manual line intervention.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Developer, Mid-Level II

Current

SÓ Multas / Tamojunto

Jan 2026 - Present (9 months)

Led 5 end-to-end integration projects, coordinating external vendors and internal squads, delivering all on schedule and enabling end-to-end tracking of ~80% of qualified leads. Increased qualified lead volume by ~60% by integrating Blip, RD Station, n8n, and the PHP system into the acquisition journey.

PHP Laravel MySQL EC2 S3 Lambda Angular REST APIs Python JavaScript NodeJS N8n Docker Git

Full Stack Developer, Mid-Level

SÓ Multas

Mar 2024 - Dec 2025 (1 year 9 months)

Processed over R$ 600K/month in transactions by redesigning the billing model with 4 gateways via REST APIs and webhooks, applying real-time split that virtually eliminated settlement discrepancies. Raised the payment approval rate to ~90% by designing the payments layer in Hexagonal Architecture within a unified checkout.

PHP Laravel MySQL EC2 S3 Lambda Angular REST APIs Python JavaScript NodeJS Amazon SQS Docker Git

Full Stack Developer

Freelancer

Nov 2023 - Mar 2024 (4 months)

Delivered a social network for developers from scratch, owning the full cycle from database modeling to API and back-end integration.

JavaScript PHP MySQL HTML CSS

Process Technician

Jabil Ind. Eletroeletrônica

Feb 2018 - Oct 2021 (3 years 8 months)

Reduced manual line intervention by 55% by developing Python automations integrated with physical peripherals to validate payment terminal workflows. Reduced scrap waste by 45% by taking ownership of the metric with analyses and presentations to leadership.

Python KPIs Lean Six Sigma

Education

Degrees, certifications, and relevant coursework

Universidade Federal de Minas Gerais

Bachelor's, Systems Engineering

Bachelor's in Systems Engineering with expected graduation in 2026. Relevant coursework includes Data Structures, Algorithms, C++, Operations Research, and Nonlinear Optimization.