Senior Software engineer Python / TS - Paris - CDI
1 day ago
Paris
Senior Software Engineer - Python (Django) / Typescript (React) - CDI Package : 65-85K + BSPCE Location : Paris 9th (Morning Laffitte) - 2 remote days / week About Symbiotic Security Symbiotic Security is an AI-native cybersecurity startup building security copilots that live where developers work, in the IDE and CI/CD pipelines. We operate two core product lines, Symbiotic Flow (security workflows and automation) and Symbiotic Code (developer-first security in code and tooling). We don’t just find bugs, we help teams remediate AI-generated flaws and ship more secure code with real-time guidance • The Scale: 25 team members across Paris & NY, • The Growth: Aiming for 6 new strategic hires by the end of 2026, • The Culture: High technical standards, no-ego, and a product-driven mindset The Rolr Join our Paris-based tech team as a Senior Fullstack Engineer. You will play a key role in evolving our SaaS platform, working closely with our CTO (Édouard), EM (Abir), and Tech Lead (Minh Thang) • Focus: 70% Backend (Python/Django) | 30% Frontend (React/TypeScript), • Architecture: We are scaling a monolithic architecture using Hexagonal Architecture and DDD principles, • Impact: You won't just ship features; you'll lead technical scopes, drive performance initiatives, and mentor peer Technical Stack • Backend: Python 3.12+, Django (REST API), • Frontend: TypeScript, React (SaaS platform & IDE plugin), • Quality: 94% backend test coverage (100% on business logic), • Tools: PostgreSQL, AWS, Sentry, CLI tools, and AI agents. Who You are • Experience: 5+ years of software engineering, with a track record of delivering complex systems, • Mastery: Strong expertise in Python and TypeScript. Django experience is a major plus, • Craftsmanship: Deep understanding of SOLID, DRY, and Clean Code. Curiosity for DDD is essential, • Mindset: Early-stage startup spirit : autonomous, fast, and impact-driven. You understand the "Why" before the "How" Why Join Symbiotic ? • Elite Tech Culture: Monthly "Bug Days," "cool-down" periods for internal tech projects, and systematic code reviews, • AI-First: Every developer is encouraged to use LLMs (Copilot, Claude, ChatGPT) in their workflow, • Package: Competitive base salary + BSPCE (Equity) + 100% Health cover, • Environment: Bright offices at Morning Laffitte (Paris 9e), 2 remote days/week, and a vibrant team culture Fast-Track Hiring (2 Weeks) • Screening: Call with our Talent Acquisition, Blanche (30 min), • Manager Interview: Meeting with our EM, Abir (1H), • Technical: On-site test with our Tech Lead, Minh Thang (2H), • Culture Fit: Meeting with the CTO and lunch with the team.