ML Engineer Jobs in Belo Horizonte.
All active ML Engineer roles based in Belo Horizonte.
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Senior Backend Engineer - Contract
At Roofr, we’re obsessed with our customers. We constantly gather feedback to shape, prioritize, and launch the products they truly need. That’s what makes Roofr’s CRM special. We started by building essential sales tools like aerial roof measurements and digital sales proposals. But when our customers asked for a simple, affordable way to manage and scale their entire businesses, we listened. So, we created a CRM that connects these solutions—along with payments, material ordering, and more—into a seamless, powerful platform. With a clear roadmap ahead, we’re excited to continue expanding and leading the market with innovative products.
We have an amazing culture, strong financials, and best-in-class company metrics. It’s an exciting time to be part of an extraordinary startup that is already successful, yet still early enough to offer its team significant growth, equity, and the opportunity to make a real impact.
This position is for an existing vacancy.
- Help drive backend architecture to the next stage of Roof’s systems
- Work in a fast-paced cross-functional team that values doing things ‘the right way’
- Contribute in an early-stage company with engineering first culture
- Contributing to all aspects of the Software Development Lifecycle, from planning to delivery
- Collaborating with the cross-functional team members to develop technical requirements
- Writing clean code to develop functional web applications and reusable libraries
- Writing unit, functional, and acceptance tests
- Troubleshooting and supporting production applications
What You'll Bring to the Role:
- 5+ years of software development experience
- Proficiency with PHP language & Laravel framework
- Is a champion of agile methodologies and enjoys shipping code often and confidently
- Has a track record on breaking down complex problems as incremental solutions
- Proactively recommends initiatives to improve our engineering technologies and culture
- Enjoys working in a collaborative environment where everyone helps each other grow
- Takes ownership of the product and is proud of the quality of their work
- Has excellent communication skills and appreciates the value of good documentation
- Understands the challenges of early-stage company priorities
- We would love someone that has skills in DevOps, Big Data / Data Science, Machine learning, GIS
This is an ongoing contract role
Our compensation ranges are built using multiple market benchmarks and reflect both the scope of the role and current market data. While many hires fall within the beginning to midpoint of the band to allow for growth over time, we tailor offers based on each candidate’s experience, seniority, and demonstrated impact.
🏠 What we offer (US + Canada)
When you join our team, you’re not just accepting a job. You’re making a career move. Here’s how we’ll support you in doing some of the most impactful work of your career:
🏝️ Vacation/Paid Time Off:
- 1st week of employment is mandatory PTO! Start your journey with Roofr by decompressing and recharging - we will see you in week 2!
- 1 Friday off per month (we call those our laundry days!)
- Company wide paid shutdown for the week between Christmas and New Years
- Flexible time off
- 80% employer-paid benefits in the U.S. and 100% employer-paid premiums for Extended Healthcare and Dental in Canada
- RRSP/401k match
- Generous Parental Leave policy
🤝 Perks:
- We host an annual company retreat with great team building activities
- Ample learning and development opportunities to continue growing your career
- Home office setup stipend
- Internet and phone allowance
- Remote first culture
- Weekly Friday paydays!
🤖 AI Notice
At Roofr, we’re big fans of AI. It helps us write job descriptions that don’t put you to sleep, takes notes during interviews so we can actually listen, and even helps us track down awesome humans like you.
Feel free to use AI to prep, research, or get pumped up for your interview (we see you, ChatGPT power users 👀). But when it’s time to chat, we’d love to meet you, not your AI alter ego. Bring your real, unfiltered self, we promise we will too.
And don’t worry, a real, live human is behind every part of our process. Every application is reviewed by a real person, and you’ll always speak with real humans throughout the interview process. No bots, just good people ☺️
⚠️ Important Notice
We’ve been made aware of an individual impersonating Roofr using a fraudulent domain: roofrr.com (note the extra “r”). Our company takes the security and privacy of job applicants very seriously. We will never ask for payment, bank details, or personal financial information as part of the application process. All our legitimate job postings can be found on our official career site. Please be cautious of job offers that come from non-company email addresses, instant messaging platforms, or unsolicited calls.
To ensure your application is legitimate, please apply directly through our official careers page: https://roofr.com/careers.
If you receive any suspicious messages or have questions, reach out to us at talent@roofr.com.
Your safety and security are important to us — thank you for your vigilance!
Roofr is proud to be an equal opportunity employer. We are committed to equal employment opportunity in the workplace regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or veteran status.
Ready to apply?
Apply to Roofr
Lead/Staff Machine Learning Engineer
About us
Nu was born in 2013 with the mission to fight complexity to empower people in their daily lives by reinventing financial services. We are one of the world’s largest digital banking platforms, serving millions of customers across Brazil, Mexico, and Colombia. For more information, visit our institutional page https://international.nubank.com.br/careers/
ML Engineering at Nubank
Data Science is essential to every part of the business at Nubank, since Day 1. Most areas of the company use data science to some extent. ML Engineers are key to connecting ML models and ML-enabled systems to the rest of our infrastructure, while making sure that they work properly, delivering value to our customers.
As a Machine Learning Engineer, you’re expected to
- Interact with other team members to understand how to best apply data science and artificial intelligence to Nubank’s problems;
- Help monitor and maintain models and ML systems, making sure they are working well as measured by performance, operational and business metrics;
- Help deploy ML models both in batch and real-time scenarios. This may include building pipelines, constructing features and integrating models to other systems;
- Help build and maintain tooling and platforms to scale operations across multiple teams;
- Be familiar with modeling and statistics concepts;
Our ideal candidate
- Has extensive programming experience and is familiar with modern development techniques;
- Has experience creating, deploying and maintaining ML models and ML-enabled systems using modern frameworks;
- Understands the most common failure modes in ML-enabled systems and knows how to avoid and/or mitigate those;
- Is familiar with all stages of the ML model lifecycle, from inception to deployment and steady-state operation;
- Is familiar with cloud-based services from vendors such as AWS, GCP and Azure.
- Is familiar with software engineering and architecture principles and how they enable sustainable and maintainable systems;
- Is familiar with data engineering routines, pipelines and job scheduling frameworks;
- Is able to navigate complex mathematical and analytical environments when needed;
Our Benefits
- Chance of earning equity at Nubank
- Food/ Meal Card (Vale-Refeição and/or Vale Alimentação)
- Public Transportation Commuting Benefit (Vale-Transporte)
- NuCare – Psychological, Financial and Legal Assistance Program
- Life Insurance
- Medical Plan
- Dental Plan
- NuLanguage – Language Course Program
- Nucleo - Our learning platform of courses
- Extended Parental Leave
- Daycare Allowance
- Parental Consultancy
- Work-from-home Allowance
- Gym Partnerships
- 30 days of paid vacation
Work Model for this Role
Hybrid 2-3 times/week: Our hybrid work model brings us to the office at least twice a week, on strategic days designed to maximize team connection and collaboration. For more details, visit https://building.nubank.com/nu-hybrid-work-model/
Ready to apply?
Apply to Nubank
Senior Security Engineer (GRC)
About us
Nubank was founded in 2013 with the mission of fighting complexity to empower people in their daily lives by reinventing financial services. Today, we are one of the largest digital banking platforms in the world, serving millions of customers across Brazil, Mexico, and Colombia. For more information, visit our careers page: https://international.nubank.com.br/careers/
About the team
The Governance, Risk and Compliance (GRC) team enables Nubank to remain compliant with legal, regulatory, and internal requirements, while continuously identifying, classifying, and monitoring risks and providing strategic insights and performance evaluation to leadership.
The GRC squad collaborates with multidisciplinary teams to align our technology security strategy with Nubank’s overall business objectives, ensuring that identified risks are mitigated and that risk-based decision-making is enabled within and beyond the IT & Security Business Unit.
About the role
You will be responsible for acting as a technical reference in security, certifications, and internal controls, serving as a bridge between engineering, risk, audit, and business stakeholders.
You will define strategies, support risk-based decision-making, and ensure that security and compliance requirements are effectively embedded into processes, systems, and products.
Key responsibilities
- Act as a senior technical and governance reference across security, certifications, risk, and internal controls, influencing strategy.
- Identify control gaps and improvement opportunities in technical procedures required for certification and recertification processes (e.g., ISO 27001, PCI-DSS).
- Develop and maintain strong partnerships with business and technical leaders to orchestrate audits, assessments, and remediation plans in a risk-based and scalable way.
- Collaborate with technical teams to define action plans that ensure adherence to regulatory requirements and internal policies.
- Conduct assessments of internal controls, ensuring adherence to internal policies, legal requirements, and industry standards.
- Identify gaps and improvement opportunities in the internal controls landscape and lead control reviews, ensuring timely resolution of issues.
- Work closely with Risk teams to align on the mitigation of identified risks.
- Support responses to audit requests, regulatory inquiries, and due diligence from business partners.
- Partner with Engineering, Product, IT, and global teams to integrate compliance and security requirements into processes and systems.
- Define and monitor KRIs and KPIs, delivering forward-looking, data-driven insights to senior management and Committees.
- Drive continuous improvement and scale, simplifying processes and strengthening Nubank’s Security Maturity as the company grows globally.
Qualification Requirements
- Solid experience in information security, with strong knowledge of frameworks such as PCI-DSS, ISO 27000 family, NIST, and similar.
- Prior experience with security certification processes and/or internal controls, compliance, and audit support.
- Excellent executive communication skills, capable of translating complex topics into clear, actionable insights for senior leadership and committees.
- Experience operating in regulated and global environments, including interaction with auditors and regulators.
- Bachelor’s degree in Engineering, Technology, Security Information, Risk Management or related fields.
- Familiarity with using AI and automation (e.g., machine learning, generative AI, or LLM-based tooling) to enhance security compliance use cases.
- Knowledge of the regulatory landscape relevant to financial services, such as SOx, BACEN, CVM, CNBV, ANBIMA, SEC, and related regulations.
- Hands-on experience with cloud environments (e.g., AWS, GCP) and implementing security controls in these contexts.
- Advanced English (written and verbal) required.
Nice to have Requirements
- Relevant certifications such as CRISC, CISA, Security+, CISSP, or CISM are considered a strong plus.
International experience is highly desirable.
Our Benefits
- Chance of earning equity at Nubank
- Food/ Meal Card (Vale-Refeição and/or Vale Alimentação)
- Public Transportation Commuting Benefit (Vale-Transporte)
- NuCare – Psychological, Financial and Legal Assistance Program
- Life Insurance
- Medical Plan
- Dental Plan
- NuLanguage – Language Course Program
- Nucleo - Our learning platform of courses
- Extended Parental Leave
- Daycare Allowance
- Parental Consultancy
- Work-from-home Allowance
- Gym Partnerships
- 30 days of paid vacation
- Relocation Assistance Package, if applicable
Work Model for this Role
Hybrid 2-3 times/week: Our hybrid work model brings us to the office at least twice a week, on strategic days designed to maximize team connection and collaboration. For more details, visit https://building.nubank.com/nu-hybrid-work-model/
Ready to apply?
Apply to Nubank
Lead Security Engineer (GRC)
About us
Nubank was founded in 2013 with the mission of fighting complexity to empower people in their daily lives by reinventing financial services. Today, we are one of the largest digital banking platforms in the world, serving millions of customers across Brazil, Mexico, and Colombia. For more information, visit our careers page: https://international.nubank.com.br/careers/
About the team
The Governance, Risk and Compliance (GRC) team enables Nubank to remain compliant with legal, regulatory, and internal requirements, while continuously identifying, classifying, and monitoring risks and providing strategic insights and performance evaluation to leadership.
The GRC squad collaborates with multidisciplinary teams to align our technology security strategy with Nubank’s overall business objectives, ensuring that identified risks are mitigated and that risk-based decision-making is enabled within and beyond the IT & Security Business Unit.
About the role
You will be responsible for acting as a technical reference in security, certifications, and internal controls, serving as a bridge between engineering, risk, audit, and business stakeholders.
You will define strategies, support risk-based decision-making, and ensure that security and compliance requirements are effectively embedded into processes, systems, and products.
Key responsibilities
- Act as a senior technical and governance reference across security, certifications, risk, and internal controls, influencing strategy.
- Identify control gaps and improvement opportunities in technical procedures required for certification and recertification processes (e.g., ISO 27001, PCI-DSS).
- Develop and maintain strong partnerships with business and technical leaders to orchestrate audits, assessments, and remediation plans in a risk-based and scalable way.
- Collaborate with technical teams to define action plans that ensure adherence to regulatory requirements and internal policies.
- Conduct assessments of internal controls, ensuring adherence to internal policies, legal requirements, and industry standards.
- Identify gaps and improvement opportunities in the internal controls landscape and lead control reviews, ensuring timely resolution of issues.
- Work closely with Risk teams to align on the mitigation of identified risks.
- Support responses to audit requests, regulatory inquiries, and due diligence from business partners.
- Partner with Engineering, Product, IT, and global teams to integrate compliance and security requirements into processes and systems.
- Define and monitor KRIs and KPIs, delivering forward-looking, data-driven insights to senior management and Committees.
- Drive continuous improvement and scale, simplifying processes and strengthening Nubank’s Security Maturity as the company grows globally.
Qualification Requirements
- Solid experience in information security, with strong knowledge of frameworks such as PCI-DSS, ISO 27000 family, NIST, and similar.
- Prior experience with security certification processes and/or internal controls, compliance, and audit support.
- Excellent executive communication skills, capable of translating complex topics into clear, actionable insights for senior leadership and committees.
- Experience operating in regulated and global environments, including interaction with auditors and regulators.
- Bachelor’s degree in Engineering, Technology, Security Information, Risk Management or related fields.
- Familiarity with using AI and automation (e.g., machine learning, generative AI, or LLM-based tooling) to enhance security compliance use cases.
- Knowledge of the regulatory landscape relevant to financial services, such as SOx, BACEN, CVM, CNBV, ANBIMA, SEC, and related regulations.
- Hands-on experience with cloud environments (e.g., AWS, GCP) and implementing security controls in these contexts.
- Advanced English (written and verbal) required.
Nice to have Requirements
- Relevant certifications such as CRISC, CISA, Security+, CISSP, or CISM are considered a strong plus.
International experience is highly desirable.
Our Benefits
- Chance of earning equity at Nubank
- Food/ Meal Card (Vale-Refeição and/or Vale Alimentação)
- Public Transportation Commuting Benefit (Vale-Transporte)
- NuCare – Psychological, Financial and Legal Assistance Program
- Life Insurance
- Medical Plan
- Dental Plan
- NuLanguage – Language Course Program
- Nucleo - Our learning platform of courses
- Extended Parental Leave
- Daycare Allowance
- Parental Consultancy
- Work-from-home Allowance
- Gym Partnerships
- 30 days of paid vacation
- Relocation Assistance Package, if applicable
Work Model for this Role
Hybrid 2-3 times/week: Our hybrid work model brings us to the office at least twice a week, on strategic days designed to maximize team connection and collaboration. For more details, visit https://building.nubank.com/nu-hybrid-work-model/
Ready to apply?
Apply to Nubank