Symbiotic Security

Symbiotic is the AI Coding company for organizations that care about their data, people, and customers. Symbiotic Code is an AI code generation agent that embeds security enforcement directly into…

symbioticsec.ai

Symbiotic Security

Symbiotic is the AI Coding company for organizations that care about their data, people, and customers. Symbiotic Code is an AI code generation agent that embeds security enforcement directly into…

symbioticsec.ai

HQUS

Team Size23

Open JobsUnknown

Total Funding-

Latest FundraiseUnknown

TL;DR

Founded: 2024

Headquarters: New York City, United States

Core product: Symbiotic Code — secure AI code-generation agent with in-IDE enforcement

Employee count: 23

Reported seed funding: $3M (Nov 2024) and $10M (Jan 2026) entries reported

Company Overview

Problem Domain

Application security for developer workflows and AI-assisted code generation

Founded

2024

Industry

Application security / AI for developer tools

Funding Track Record

Seed- Nov 2024

$3.0M

Reported seed round with investors including Lerer Hippeau, Axeleo Capital, and Factorial Capital.

Seed- Jan 2026

$10.0M

Reported seed entry listing Alven as lead and additional angel/backer names cited.

Investor Signal

“Backed by institutional seed investors including Lerer Hippeau, Axeleo Capital, Factorial Capital, and Alven; angel investors include Thomas Wolf and Julien Launay.”

Founders

What we do

Join the Team

Software engineer Django React

HybridParis, Île-de-, FR

Hybrid • Paris, Île-de-, FR

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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. We’ve built the first security assistant that lives where developers work: in the IDE and CI/CD pipelines. We don’t just find bugs; we remediate AI-generated flaws and provide real-time coaching to developers.

The Scale: 25 team members across Paris & NYC.
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 Role

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 peers.

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 Max)

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 (1.5h).
Culture Fit: Meeting with the CTO and lunch with the team.

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