Software Engineer – Remote

About the role

TWOSENSE.AI is building the world’s first invisible biometric authentication system. As a Software Engineer you will join an engineer‑founded team of PhDs and developers, working fully remote to shape the core product and its multi‑platform extensions.

Key responsibilities

• Design, develop, test and deploy new features for the core authentication platform.
• Maintain and improve existing codebases, including backend APIs and partner integrations.
• Collaborate with the CTO and the wider team on architecture decisions and code reviews.
• Write clean, test‑driven code and ensure high coverage with unit and integration tests.
• Participate in the full development lifecycle from design to production monitoring.

Required profile

• Comfortable working in a fast‑paced startup environment.
• Obsessive about clean, maintainable code and strong peer‑review practices.
• Proactive in identifying problems and proposing solutions.
• Excellent communication skills and a team‑first mentality.
• Eager to learn new technologies daily.

Required skills

• C#
• .NET Core
• Entity Framework Core
• SOLID principles (SRP, DIP)
• Automated unit and integration testing
• SQL and relational databases
• REST API design and consumption
• Common design patterns and best practices
• Hexagonal/Clean/Onion architecture (nice‑to‑have)
• Domain‑Driven Design (nice‑to‑have)
• Win32 API / C++ (nice‑to‑have)
• TypeScript or JavaScript (nice‑to‑have)
• SAML / OIDC (nice‑to‑have)
• Machine Learning (nice‑to‑have)
• Python (nice‑to‑have)
• macOS development (nice‑to‑have)

What we offer

• Fully remote work from anywhere in Argentina.
• Equity participation in the company.
• Flexible PTO and monthly project days for personal initiatives.
• Access to online learning resources (O'Reilly, Pluralsight, technical books).
• Company‑covered travel for team meet‑ups and events.
• High‑end equipment, VPN and full tech setup.