Senior Full Stack Software Engineer (React, Python)
The Opportunity
Join our team as a Full Stack Software Engineer and take on the challenge of building AI-native cybersecurity infrastructure that protects against human-layer attacks such as phishing, social engineering, and AI-enabled fraud. You'll work in a dynamic technical environment that operates at the intersection of browser instrumentation, on-device AI, real-time user interaction monitoring, and privacy-preserving telemetry. This is a unique opportunity to deliver impactful solutions for industry-leading clients by developing systems that operate inside the browser runtime, at the endpoint, and within enterprise security pipelines. Your work will directly contribute to enhancing security workflows and preventing cyber threats.
What You'll Bring
Technical Skills and Experience:
- 2–3 years of professional software engineering experience.
- Proficiency in Python and JavaScript or TypeScript.
- Proven experience in building Single Page Applications (SPA) using React, Next.js, and TypeScript.
- Experience with Python-based backend systems using FastAPI or Django.
- Strong understanding of browser fundamentals, HTTP, authentication flows, and databases.
- Experience in shipping production APIs and debugging distributed systems.
Professional English Communication:
- Excellent written and verbal communication skills in English.
What Sets You Apart
Optional Technical Skills and Technologies:
- Experience with browser extensions (Manifest V3, service workers, content scripts).
- Familiarity with security-aware data pipelines and secure UI overlays.
- Exposure to native system integrations and local agent components.
- Knowledge of WebAssembly, Electron, Tauri, Rust, Go, gRPC, or localhost service bridges.
Why You'll Love Working With Us
- Collaborate with top-tier U.S. clients on cutting-edge cybersecurity projects.
- Enjoy a remote-first work environment with flexible arrangements that support work-life balance.
- Engage in a variety of future projects that offer growth opportunities and the chance to work with emerging technologies.
- Be part of a team that values ownership, technical depth, and security-first architecture decisions, where you can operate with high autonomy and make a real impact.
- Domain
- Full-Stack Development
- Locations
- Latin America
- Remote status
- Fully Remote
About Flylance
We offer you the unique opportunity to work on cutting-edge projects that push the boundaries of technology. Imagine being part of a team that's developing the next big advancement in A.I., or crafting software solutions for Fortune 500 companies. This isn't just a job; it's your chance to make a mark on the tech landscape, showcasing your skills on projects that are at the forefront of innovation. By joining us, you're not just building software; you're building a legacy.
Check out our website to learn more.
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