Senior Full-stack Engineer

Our Mission
Prose is truly custom hair and skin care made-to-order—just for you. Our line of custom products are made by an in-house, Paris-based R&D team of gifted chemists who combine natural ingredients in innovative ways alongside dermatologists, giving consumers clean skin care, hair care and impeccable results.
At the heart of Prose’s success is Singular, its proprietary AI-powered beauty-tech platform, which has revolutionized personalized beauty at scale. Marrying a technology-driven approach with an apothecary-style concept, all Prose hair and skin care products are personalized to your one-of-a-kind hair, skin, goals and environment.
We’re a company that wants to change beauty practices, so we’re changing the way beauty companies practice. As a certified B Corporation, a Public Benefit Corporation and Climate Neutral , we’re proving that good business is always sustainable. With Prose, there’s nothing sacrificed to bring you great products—not trees, materials, wages, or performance.
Prose & Singular in Numbers

• Founded in 2017 , with hubs in Paris, New York, and Los Angeles

• 10M+ consultations completed

• 2M customers and 350K active subscribers

• 21M custom products made, with 1M+ unique formulas

• 350+ team members across disciplines

• $600M+ in lifetime sales, with $165M+ revenue in 2024

• Profitable since 2024

Discover our Company Culture on Welcome to the Jungle here
Discover our Company Mission & Vision in video here
Position Summary
Prose is seeking a Senior Full-stack Engineer to design, build, and ship the systems behind Singular, our proprietary platform. You'll be part of our Tech organization that designs, builds, and delivers both platform capabilities and product features that power Prose's personalized beauty experience — from the consultation and e-commerce journey to the manufacturing systems that turn every order into a physical, made-to-order product in our NYC and LA facilities.
We are a deliberately compact, senior engineering team. Every engineer owns a broad scope, ships to production continuously, and works with AI-augmented development practices as a core part of the craft. You'll join at a moment where we're evolving toward a modular architecture with clearly separated domains, and you'll have a real voice in those design decisions.
Few engineering teams get to ship code that ends as a physical product formulated for one specific person. If you're passionate about end-to-end ownership, technical excellence, and building with the best AI tooling available, we'd love to hear from you.

Key Responsibilities

• Build & Ship

• Design, build, and ship features end to end across our stack: Python/Django services and REST APIs on the backend, React applications on the frontend.

• Own quality on your scope: automated testing, peer review, observability, and production monitoring.

• Identify and address areas of technical debt, implementing improvements to enhance system performance and maintainability.

• Architecture & Technical Direction

• Contribute to our architecture evolution: domain boundaries, data schemas, event-driven patterns, and the tradeoffs of a platform serving both e-commerce and manufacturing.

• Participate in architecture discussions and system design decisions.

• Advance our AI implementation across the tech org: make AI-augmented development part of your daily practice, and help shape our agents, skills, and internal tooling rather than just consuming them.

• Collaboration & Impact

• Collaborate closely with product, design, data, and operations stakeholders to deliver high-quality features — our scope touches everything from checkout conversion to factory throughput.

• Bring visibility to ongoing work, risks, and dependencies.

• Mentor other engineers and raise the team's bar through design and code review.

• Contribute to technical documentation and knowledge sharing across the team.

Key Candidate Requirements

• 5+ years of professional software engineering experience, with significant time on both backend and frontend in production systems.

• Strong backend experience with Python, along with common libraries such as Django, Rest Framework, FastAPI.

• Solid modern frontend experience with React and the current JavaScript/TypeScript ecosystem.

• Deep understanding of fundamental design principles behind a scalable application.

• A knack for writing clean, readable, and maintainable code.

• Hands-on AI fluency and a genuine interest in AI-assisted engineering workflows.

• Comfortable with cloud-native environments: GCP, Docker, CI/CD.

• Pragmatic mindset, knowing when to invest in perfection, and when to build a PoC.

• Autonomous on your scope: you own outcomes, escalate when needed, and don't wait to be told what to do.

• Prior experience in B2C, e-commerce, manufacturing is a plus.

• Fluency in English is required.

Compensation & Benefits
Prose fosters inclusivity, learning, and diversity within our teams and workplace. Just as we celebrate unique beauty, every team member is encouraged to show up as their full self. In addition to creating an environment where all individuals feel welcome, we offer benefits that include:
💵 Compensation

• Competitive base salary — 60.000–70.000€ based on experience

• Variable bonus up to 10% based on company and individual performance

• BSPCE program

🩺 Health & Wellness

• 100% coverage of health insurance and life/disability plan (including dependents)

• Access to CSE allowance

🍽️ Lifestyle & Perks

• Standard French benefits: Swile meal vouchers, transport allowance, and Syntec vacation bonus

• €150 worth of personalized Prose products each month…

Source: Arbeitnow (https://www.arbeitnow.fr/jobs/companies/prose/senior-full-stack-engineer-paris-139847)