Jobs in Porto Alegre, Brazil

Security Engineers, Ledn is interested in hearing from you!

Ledn is a global financial services company built for digital assets, helping to improve the everyday lives of Bitcoin holders while building generational wealth for the future. We offer a suite of egalitarian lending, savings and trading products to digital asset holders in over 150 countries around the world. Through our products & services, we can make a difference in the lives and futures of our clients - in real terms.

Our team at Ledn is a passionate group of individuals from diverse backgrounds. What we all have in common is an unshakeable conviction that digital assets can democratize access to the global economy and Ledn’s suite of products & services can play a critical role in doing so. The core values that guide us are : act with integrity always, own it, have a passion for progress, and lead with empathy. Combining these values with our conviction make Ledn an unstoppable force in changing the world for the better. Come join us as we build, innovate and revolutionize financial services!

The Opportunity

We are seeking a full time Security Engineer with deep expertise in Application Security, Identity & Access Management, and Confidential Computing to strengthen the security of our Bitcoin-backed loan platform. Security is fundamental to protecting our customers and business, and this role will drive both the tactical improvements and long-term strategy for securing our applications and authentication systems.

You will work across our JavaScript / TypeScript services, AWS serverless stack (Lambda, API Gateway, Cognito, SNS, SQS), MongoDB and Kubernetes microservices, and take ownership of evolving our authentication layer toward modern, phishing-resistant approaches. In addition, you will design and operate AWS Nitro Enclaves to protect critical data and cryptographic operations in isolated, verifiable environments.

This is a hands-on engineering role with direct impact on product security, infrastructure security, and customer trust.

About the Role

Application Security :

• Lead secure design and code reviews across engineering teams.
• Define and enforce secure coding practices for JavaScript / TypeScript services.
• Automate vulnerability detection (SAST, SCA, DAST) within CI / CD.
• Conduct threat modeling and risk assessments for new features.
• Partner with engineers to remediate vulnerabilities and improve secure development practices.

Authentication & Identity :

Confidential Computing (AWS Nitro Enclaves) :

Additional Security Domains :

What You Bring to Ledn :

Nice to Haves :

Culture Fit :

We’re looking for more than just operational excellence — we want a leader who thrives in the startup or tech environment and embodies our values. The ideal candidate will :

A Taste of What We Provide :

We are an equal opportunity employment organization and pride ourselves on inclusivity, diversity, and the success that comes from diversity. You may reach out to the Ledn team by emailing accessibility@ledn.io for accommodation requests throughout all stages of the recruitment process. Requests will be addressed confidentially.

Ledn Working Environment

Our Ledn team is truly global in nature with our people spanning across North America, Latin America, South Africa and Europe. We are a remote first environment.

Please note , due to the high volume of applications, only those applicants that qualify will be contacted. As part of our selection process , shortlisted candidates may be asked to submit a short video response and we may review publicly available social media activity relevant to the role.

No agencies or recruiters please. We do not accept unsolicited agency resumes and we are not responsible for any fees related to unsolicited resumes.