Software Engineer – Security & Infrastructure 🇦🇷

About the role

ABOUT THE MOBILE-FIRST COMPANY

Most tools for small businesses weren’t built for real operators. They were built for employees in offices, not people running a business from their phone.

We’re changing that.

We build mobile-first business software that feels like a consumer app, runs on AI, and spreads like a creator brand.

Our first product, Allo https://www.withallo.com/, gives you a second number on your phone, answers missed calls with AI, transcribes everything, and syncs it to your CRM.

Over 20,000 businesses use it every day. Next up: expenses, invoicing, and more.

We’ve raised +15 million dolars from Base10, Lightspeed, EMBLEM, and 30+ top operators. Our team is based in Paris, Buenos Aires, Miami.

WHAT WILL YOU DO:

- • Work side by side with our CTO to own our security and compliance roadmap, from strategy to execution. • Lead our offensive security track with external partners: scope pentests, triage findings and drive the fixes across infrastructure and code. • Partner with our Infra & Platform team to design, harden and scale the backend and cloud infrastructure behind our products.

WHAT YOU’LL BE WORKING ON

- • Securing our cloud infrastructure (e.g., AWS, Supabase, Cloudflare): IAM, networking, encryption, secrets and logging. • Authentication, authorization and data protection across our apps. • Building security into our CI/CD: code, dependency and secret scanning that keeps pace with a team that deploys every day. • Writing the code, automations and tooling that fix vulnerabilities and keep them from coming back. • Owning our compliance controls (HIPAA, GDPR, SOC 2) and closing the technical gaps. • Monitoring, alerting and incident response for a real-time telephony and AI product.

WHAT WE’RE LOOKING FOR

1. Backend Engineering: ◦ Proficiency in backend development with expertise in languages like Kotlin, Java, Go, Python or similar. ◦ Track record of building and maintaining scalable and reliable backend systems. ◦ Experience with AI is a strong plus, especially in applying models to real-world product use cases and optimizing performance in production environments. 2. Security: ◦ Hands-on security work in production: you’ve fixed vulnerabilities, implemented authentication and authorization (OAuth, JWT, RBAC), or worked in a security, fraud or platform team. ◦ Strong knowledge of secure coding practices and the OWASP Top 10. ◦ Security work beyond your day job (CTFs, bug bounties, certifications, side projects) is a strong plus. 3. Infrastructure: ◦ Hands-on experience with AWS or a similar cloud, networking and production environments. ◦ Familiarity with Infrastructure as Code, CI/CD and monitoring tools like New Relic or Datadog. 4. How you think ◦ You care about why we build things, not just how. ◦ You ask smart questions, challenge ideas when needed, and help shape what’s next. ◦ You think in terms of user value and business impact. 5. How you work ◦ You communicate clearly, give feedback with no ego, and help others grow. ◦ You move fast, take ownership, and thrive in ambiguity. ◦ You're comfortable working in English — and in a small team with big goals.