Feeny
Symbiotic Security

Freelance Senior Software Engineer Django at Symbiotic Security (Morning Laffitte)

Symbiotic Security· Morning Laffitte·

Role details

Work type
Hybrid
Employment
Contract

Job description

Context As demand accelerates on Symbiotic Code, we are opening a contracting mission to strengthen the engineering team on high-impact deliverables, with a focus on speed, quality, and strong autonomy.

The role

As a Contractor Software Engineer, you will join the team to take ownership of well-scoped engineering topics, deliver iteratively, and integrate into our existing development flow (PRs, reviews, quality gates, deployments).

Must-have expectations

  • Strong autonomy on a Django (Python) stack (no planned upskilling on these fundamental)
  • Testing discipline (useful tests, reproducibility) and systems thinking (performance / reliability / security impact)
  • Mission-first mindset: willingness to “cross the aisle” and contribute where the mission needs it
  • Ability to operate in a demanding environment (quality, security, ownership)

Responsibilities

  • Own a topic end-to-end (technical scoping, implementation, tests, documentation, delivery)
  • Participate in the team’s development cycle: PRs, code reviews, feedback loops, iterations
  • Maintain production-grade quality (robustness, security, readability)
  • Communicate clearly on progress, risks, and trade-offs

Project section (examples of contractor-friendly topics) These are examples (non-exhaustive) and may evolve:

  • Database split to enable a future single-tenant deployment (migration / progressive separation)
  • GitLab integration (existing spec)
  • Prompt management migration (from client to backend)
  • Security backlog (bug bounty-related issues)

Contractors are expected to be fully part of the team’s development flow (reviews like everyone else). Core vision / research topics will typically be handled by full-time engineers.

Engagement details

  • Target daily rate (TJM) / budget: €600 / day
  • Contract: 3 months, renewable
  • Equipment & compliance: use of a Symbiotic Security laptop (Vanta) + a Symbiotic Security Gmail account
  • Location: Morning Laffite - 3 days in the office / 2 remote days
  • Renewal: based on project progress and evolving needs

Process (contractor flow) A faster process than full-time hiring:

  • Needs qualification (stack / budget)
  • Remote technical assessment including:- Algorithm & logic
  • Architecture: asynchronous systems, scalability, project structure and delivery

Nice to have

  • Python / Bun
  • Security mindset / AppSec sensitivity (or interest in leveling up in a security-focused context)

How to apply / next steps Please share:

  • Your CV or LinkedIn
  • Links to code (GitHub, PRs) when possible
  • Your daily rate, start availability, and preferred rhythm (days/week)

Why work at Symbiotic Security

  • Mission-Driven: Opportunity to work on a critical problem at the intersection of AI and security, ensuring safe and productive use of AI in software development.
  • Strong Founding Team: Work directly with experienced cybersecurity veterans who have a history of building and exiting successful companies.
  • High Growth Stage: With $13M in funding and a rapidly growing team (71.4% YoY), this is an early-stage opportunity with significant ownership and impact.
  • Remote-Friendly: The workforce is distributed across France, the United States, Canada, and Spain, suggesting a flexible work environment.
  • Open Positions: Currently hiring for "Software engineer Typescript" and "Senior Software engineer Python / TS" in Paris (CDI).

Application questions