Principal Software Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Principal Software Engineer based in Brazil.

This is a senior, hands-on technical leadership role where you will define the architecture and long-term engineering strategy for a high-performance web and mobile ecosystem.
You will act as the main technical authority across a complex stack spanning React-based frontend applications, Node.js backend services, and ML-driven ad-tech systems.
The role combines deep engineering execution with strategic decision-making, ensuring scalability, reliability, and extreme performance optimization at every layer.
You will work closely with stakeholders to shape product direction, remove system bottlenecks, and ensure production systems operate at peak efficiency.
A strong focus is placed on performance, where milliseconds of improvement directly impact business outcomes and revenue.
You will also contribute to infrastructure design, data architecture, and optimization of machine learning pipelines powering ad-tech performance.
This is a high-impact role in a fast-moving environment where technical excellence is a core expectation.

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Principal Software Engineer based in Brazil.

This is a senior, hands-on technical leadership role where you will define the architecture and long-term engineering strategy for a high-performance web and mobile ecosystem.
You will act as the main technical authority across a complex stack spanning React-based frontend applications, Node.js backend services, and ML-driven ad-tech systems.
The role combines deep engineering execution with strategic decision-making, ensuring scalability, reliability, and extreme performance optimization at every layer.
You will work closely with stakeholders to shape product direction, remove system bottlenecks, and ensure production systems operate at peak efficiency.
A strong focus is placed on performance, where milliseconds of improvement directly impact business outcomes and revenue.
You will also contribute to infrastructure design, data architecture, and optimization of machine learning pipelines powering ad-tech performance.
This is a high-impact role in a fast-moving environment where technical excellence is a core expectation.

We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team.

We appreciate your interest and wish you the best!

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