CloudWalk

CloudWalk focuses on developing an advanced payment network that empowers entrepreneurs by providing a comprehensive service for creating, deploying, and managing applications for POS terminals and smartphones, utilizing cutting-edge technology such as...

Diversified Financial Services

Financials

51-250 (180)

Founded 2013

$334M raised

25 open positions

Links

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Machine Learning Engineer

3 weeks, 6 days ago

Brazil

Full-time

Senior

Software Development

AWS CDN Cloudflare GCP HTTP LLM Machine Learning Python PyTorch Rust Scikit-learn SQL TensorFlow TypeScript WAF

Apply Now

CloudWalk

Diversified Financial Services

51-250

Founded 2013

$334M raised

View All Jobs 25

Description

Design and train machine learning models for anomaly detection, bot mitigation, and zero-day intrusion detection.
Deploy and optimize inference models at the edge to process massive volumes of HTTP traffic with ultra-low latency.
Work with offensive security engineers to analyze attack vectors, simulate threats, and build high-quality training datasets.
Create data pipelines that continuously ingest traffic logs and support monitoring, drift detection, and automated retraining.
Translate raw network traffic and attack data into proactive defense mechanisms.
Collaborate with security engineers and red teamers to improve detection coverage against real attack classes.
Integrate production-ready services with the broader security stack.
Operate autonomously within a fully remote, distributed team while collaborating closely with stakeholders.
Support defense automation using latest threat intelligence and model performance feedback.

Requirements

Fluency in Python and SQL.
Deep proficiency with ML libraries such as PyTorch, TensorFlow, or Scikit-Learn.
Experience deploying machine learning models into production in high-throughput, low-latency environments.
Strong understanding of web security, HTTP protocols, and common attack vectors such as OWASP Top 10, L7 DDoS, and credential stuffing.
Familiarity with edge computing platforms such as Cloudflare, Fastly, or AWS Edge, and CDN/WAF concepts.
Solid software engineering fundamentals and ability to write production-ready services in Python, Rust, TypeScript, or similar languages.
Experience with cloud infrastructure such as GCP or AWS and managing large-scale datasets.
Experience with LLMs and Agents.
Ability to work autonomously in a fully remote and distributed team.
Strong communication skills in both English and Portuguese.
Direct experience with the Cloudflare ecosystem, including Cloudflare Workers, Cloudflare WAF, or Cloudflare Workers AI, is a plus.
Background in cybersecurity such as IDS/IPS, threat hunting, or malware analysis is a plus.
Familiarity with payment industry security such as PCI DSS, card tokenization, or acquiring flows is a plus.
Contributions to open-source security or ML tools, published security research, or CTF participation are a plus.

Interested in this position?

Apply directly on the company website

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