Stancer, a subsidiary of the Free group founded in 2018, specializes in simple and competitive payment solutions for SMEs, offering online and in-store payment services with transparent fees, easy integration, and fraud-management tools. We are looking for a Senior Python Backend Developer to maintain and evolve the client space. Your main missions will be: support complex in-house developments, participate in technical architecture decisions, and keep up with technology trends. Qualifications: Master's degree in engineering or computer science (or equivalent); significant experience with Python; knowledge of Docker, GitLab, CI/CD; ability to share knowledge and mentor others; autonomy, proactive attitude, and good communication skills; English proficiency is a plus; knowledge of the financial sector is a plus. Technical environment: Python and TypeScript; FastAPI, SQLAlchemy, GraphQL, Vue.js; databases: MySQL, Redis, MongoDB; tests: Pytest, Vitest. Location: Stancer – Paris, 24 rue Cambacérès. Benefits: bonus and profit-sharing tied to group performance, banking sector collective agreement, executive status with 210 working days per year, 25 days paid leave (26 after a year), 2 days remote per week after the trial period, modern offices with a terrace, Free box reimbursement up to €50/month, access to Free company restaurant, meal voucher card (€10/day, employer reimburses 60%), commitment to non-discrimination. Contract type: CDI; Remote work: possible; Senior level; Salary: EUR 49,000 – 60,000 per year.

Stancer, a subsidiary of the Free group founded in 2018, specializes in simple and competitive payment solutions for SMEs, offering online and in-store payment services with transparent fees, easy integration, and fraud-management tools. We are looking for a Senior Python Backend Developer to maintain and evolve the client space. Your main missions will be: support complex in-house developments, participate in technical architecture decisions, and keep up with technology trends. Qualifications: Master's degree in engineering or computer science (or equivalent); significant experience with Python; knowledge of Docker, GitLab, CI/CD; ability to share knowledge and mentor others; autonomy, proactive attitude, and good communication skills; English proficiency is a plus; knowledge of the financial sector is a plus. Technical environment: Python and TypeScript; FastAPI, SQLAlchemy, GraphQL, Vue.js; databases: MySQL, Redis, MongoDB; tests: Pytest, Vitest. Location: Stancer – Paris, 24 rue Cambacérès. Benefits: bonus and profit-sharing tied to group performance, banking sector collective agreement, executive status with 210 working days per year, 25 days paid leave (26 after a year), 2 days remote per week after the trial period, modern offices with a terrace, Free box reimbursement up to €50/month, access to Free company restaurant, meal voucher card (€10/day, employer reimburses 60%), commitment to non-discrimination. Contract type: CDI; Remote work: possible; Senior level; Salary: EUR 49,000 – 60,000 per year.