Senior ML Engineer – AI Safety

Serasa Experian; São Carlos; On-site; BRL 220,000 - 380,000; Full time

Job summary

Serasa Experian is seeking an experienced, proactive Senior ML Engineer to join its AI Safety team in Brazil. You will lead the design, governance, and safety guardrails for GenAI systems, partnering with security, risk, compliance, legal, and product teams to ensure robust, explainable, and regulation-aligned AI solutions.

You will mentor engineers, shape technical strategy, and drive adoption of AI safety best practices across the organization, influencing platform initiatives and fraud

Qualifications

• Experience in machine learning, data science, or software engineering with focus on AI safety, alignment, Responsible AI, or model governance.
• Strong Python skills and proficiency with ML frameworks such as TensorFlow, PyTorch, scikit-learn, or equivalent tooling.
• Hands-on MLOps experience, including MLflow, Kubeflow, CI/CD for ML, model monitoring, versioning, and reproducible deployment practices.
• Demonstrated knowledge of AI safety techniques including red-teaming, adversarial testing, fairness metrics, interpretability methods, and alignment approaches.
• Strong understanding of AI governance, model risk management, and regulatory expectations in financial services, with practical experience preparing documentation for audit or regulatory review preferred.
• Excellent written and verbal English skills, with the ability to translate complex safety concepts for non-technical audiences.

Responsibilities

• Lead the design and implementation of Responsible AI frameworks, governance policies, and safety guardrails for GenAI systems.
• Define and own AI safety evaluation pipelines, including red-teaming, adversarial robustness testing, jailbreak and prompt injection assessments, and automated safety benchmarks.
• Develop explainability and interpretability tooling to support model audits, regulatory reviews, and clear communication of model behaviour and limitations.
• Partner with risk, compliance, legal, privacy, security, product, and engineering teams to embed safety requirements into scalable GenAI solutions.
• Lead incident response and root cause analysis for AI-related safety issues, including post-incident reviews and remediation playbooks.
• Contribute to GenAI-powered solutions in fraud detection, credit risk, customer service automation, and platform initiatives while ensuring alignment with AI risk appetite.
• Mentor junior and mid-level engineers and represent AI Safety in cross-functional forums.

Skills

Python

TensorFlow

PyTorch

scikit-learn

MLOps

AI safety

Regulatory knowledge

English communication

Tools

MLflow

Kubeflow

CI/CD for ML

Model monitoring

Job description

Experian is a global data and technology company that drives opportunities for people and businesses around the world. We operate in diverse markets such as financial services, healthcare, automotive, agribusiness, insurance, and more. Experian invests in people and advanced new technologies to unlock the power of data. We have an incredible team of 25,200 employees in 32 countries. Our uniqueness is valuing yours. Experian's people-centric, inclusive, and purpose-driven culture is recognized by numerous awards — including World’s Best Workplaces™ 2025 (Fortune's Top 25 global) and Great Place To Work™ in 26 countries, among others. Check out Experian Life on social media or explore our careers website to understand why. Experian is also proud to be an equal opportunity employer and an affirmative action employer. If you have a disability or need that requires accommodation, please let us know as soon as possible.

Experian is a global data and technology company that drives opportunities for people and businesses around the world. We operate in diverse markets such as financial services, healthcare, automotive, agribusiness, insurance, and more. Experian invests in people and advanced new technologies to unlock the power of data. We have an incredible team of 25,200 employees in 32 countries. Our uniqueness is valuing yours. Experian's people-centric, inclusive, and purpose-driven culture is recognized by numerous awards — including World’s Best Workplaces™ 2025 (Fortune's Top 25 global) and Great Place To Work™ in 26 countries, among others. Check out Experian Life on social media or explore our careers website to understand why. Experian is also proud to be an equal opportunity employer and an affirmative action employer. If you have a disability or need that requires accommodation, please let us know as soon as possible.

Job Description

We are looking for an experienced, proactive Senior ML Engineer to join Experian’s AI Safety team. You will lead the design, implementation, and governance of safety-critical GenAI systems across the business, partnering with senior engineers, security, risk, compliance, legal, and product stakeholders to ensure AI systems are robust, explainable, fair, auditable, and aligned with regulatory and ethical standards. As a senior contributor, you will mentor engineers, shape technical strategy, and help drive adoption of AI safety best practices across the organisation.

Key responsibilities

• Lead the design and implementation of Responsible AI frameworks, governance policies, and safety guardrails for GenAI systems.
• Define and own AI safety evaluation pipelines, including red-teaming, adversarial robustness testing, jailbreak and prompt injection assessments, and automated safety benchmarks.
• Develop explainability and interpretability tooling to support model audits, regulatory reviews, and clear communication of model behaviour and limitations.
• Partner with risk, compliance, legal, privacy, security, product, and engineering teams to embed safety requirements into scalable GenAI solutions.
• Lead incident response and root cause analysis for AI-related safety issues, including post-incident reviews and remediation playbooks.
• Contribute to GenAI-powered solutions in fraud detection, credit risk, customer service automation, and platform initiatives while ensuring alignment with AI risk appetite.
• Mentor junior and mid-level engineers and represent AI Safety in cross-functional forums.

Qualifications

Required qualifications

• Experience in machine learning, data science, or software engineering, including focused on AI safety, alignment, Responsible AI, or model governance.
• Strong Python skills and proficiency with ML frameworks such as TensorFlow, PyTorch, scikit-learn, or equivalent tooling.
• Hands-on MLOps experience, including MLflow, Kubeflow, CI/CD for ML, model monitoring, versioning, and reproducible deployment practices.
• Demonstrated knowledge of AI safety techniques including red-teaming, adversarial testing, fairness metrics, interpretability methods, and alignment approaches.
• Strong understanding of AI governance, model risk management, and regulatory expectations in financial services, with practical experience preparing documentation for audit or regulatory review preferred.
• Excellent written and verbal English skills, with the ability to translate complex safety concepts for non-technical audiences.

Nice-to-have

• Experience designing or running automated benchmark suites for LLMs or other GenAI systems.
• Familiarity with bias detection, harm classification, content safety tooling, or policy evaluation frameworks.
• Experience with regulated financial services use cases such as fraud detection, credit risk, customer service automation, or model risk management.
• Experience influencing engineering standards or mentoring engineers in AI safety, Responsible AI, or production ML practices.

Additional Information

At Serasa Experian, we believe that diversity is essential for a healthier and more innovative work environment, where everyone can share experiences and express their ideas. That’s why we promote several initiatives to support inclusive recruitment and the professional development of our people.

We also have our affinity groups, created to empower and support individuals from underrepresented groups: ExperianPride (LGBTQIAPN+ community), Ubuntu (racial equity), Women in Experian (gender equity), Aspire (people with disabilities), and Connecting Generations (generations).

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