Lead Developer (Python/React) - CDI - Paris - M/F/D

Partoo; Paris; Hybrid; EUR 70,000 - 85,000; Full time

Benefits offered by this job

Health insurance

Mental health support (Alan & Moka.c‑a

Gym partnerships (Gymlib)

Job summary

Partoo is seeking a Lead Developer to join the BirdPerson impact team in Paris. You will lead backend development using Python (FastAPI) with Celery, and work with React frontend and PostgreSQL in a monolithic architecture being domain-split.

You will collaborate closely with Product and CTO, shaping technical direction and delivering high-impact features for local customer experience across multi-location businesses.

Qualifications

• Proven experience as a Lead Developer.
• Proficiency in Python within a web stack (FastAPI, Django or Flask).
• Experience in a front-end JS framework (React/Redux is a plus).
• Previous experience with Celery is a strong bonus.
• Ability to work at scale is a strong bonus.
• Good oral and written communication about technical challenges.
• Being comfortable with English is a must as we are an international team.

Responsibilities

• Support the Product Manager in achieving the product vision and provide technical guidance on scope.
• Provide technical expertise on product explorations and features.
• Participate in the development of these features.
• Ensure code quality, manage technical debt, and propose system improvements.
• Foster skill development through reviews and pair programming.
• Involve the team in tech strategy and roadmap decisions.
• Co-organize team rituals.

Skills

Lead Developer

Python web stack

React front-end

Celery

Scale experience

Communication

English

Tools

Celery

PostgreSQL

FastAPI

React

Job description

After a successful transformation phase, we're entering a key new stage in 2026: acceleration.

Today, we’re a solid, profitable, and growing European scale-up, proudly ranked in the French Tech 120, with a clear ambition: to become the go-to reference for local customer experience for multi-location businesses.

Our mission is simple: help businesses better manage their visibility, interactions, and local customer relationships through an all-in-one platform, built mobile-first and AI-first. Here, innovation is meaningful, impact is tangible, and success is built together.

Joining the adventure means contributing to an ambitious, sustainable project in the midst of international expansion.

TEAM

You will join the Engineers department, made up of nearly 40 people, whose mission is to designs and builds high-impact features, evolves a robust and scalable infrastructure, and turns product ideas into concrete solutions used every day by thousands of points of sale.

You will report directly to Jonàs, our CTO.

MISSIONS

The BirdPerson impact team has a strong backend orientation. One of its core responsibilities is the diffusion of our customer’s data on the various platforms we manage (Google, Apple, Waze, ...).

As the technical lead of this team, you will be responsible for:

• Supporting your Product Manager in achieving the product vision, and offering them strong support regarding the sometimes very technical aspects of the scope.

• Providing technical expertise on product explorations and features.

• Participating in the development of these features.

• Ensuring that the code aligns with quality standards, track technical debt in the impact team’s backlog, and make suggestions to improve the system over time.

• Ensuring skill development through reviews, pair programming, etc.

• Involving the team in decision-making and discussions (tech strategy, roadmap, etc.).

• Co-organizing team rituals.

You will work on our Python Fast API, Celery Workers, React Typescript frontend with a Postgres database on a monolithic architecture that we are working to split in domains.

EXPERIENCES & SKILLS

• Proven experience as a Lead Developer

• Proficiency in Python within a web stack (e.g, FastAPI, Django or Flask)

• Experience in a front-end JS framework (experience React/Redux is a plus)

• Previous experience with Celery is a strong bonus

• Previous experience of working at scale is a strong bonus

• Good oral and written communication skills regarding technical challenges

• Strong problem-solving skills

• Being comfortable with English is a must have as we are an international team

HIRING PROCESS

1. First Interview with Julie, Talent Acquisition (video call, 45min)

2. Business Case Interview with 2 team members (2 video calls, 1 hour each)

3. Final Interview with Jonàs, CTO (1h) & Savinien, CPO (30min), at our offices

As part of our recruitment process at Partoo, at least one step takes place in our offices in Paris or Barcelona, to meet our teams in person.

COMPENSATION

• Salary: 70K - 85K

• Our compensation grids are built using the Figures tool, based on an internally defined career path with a strong focus on fairness across teams.

• A quarterly 360° feedback is conducted with your manager, complemented by an annual compensation review based on performance and behavior.

WORK ENVIRONMENT & BENEFITS

• Work environment: Eco-responsible offices in Paris 18, accessible to people with disabilities (RQTH).

• Committed company: B Corp certified, ranked French Tech 120, Disability Agreement (Accord Agréé Handicap), ISO 27001 standard, 2 volunteer days/year offered, internal groups such as Women@Partoo.

• Health & well-being: Health insurance and mental health prevention support with Alan, coaching sessions with Moka.care, partnership with Gymlib (4,500 gyms, 300 activities).

• Daily life: Worklife card with meal vouchers, sustainable mobility allowance, CESU.

• Flexibility: 6 RTT days per year in addition to paid leave. 2 to 3 remote working days per week, plus 6 additional weeks per year after the probation period.

• CSE: Ensures employee well-being, safety, health and working conditions, and offers benefits via the Leeto platform.

• Collective life: Company retreats, events and shared moments such as card tournaments, sports challenges, yoga sessions, cooking workshops. Whatever your interests, you will find a group that suits you, and we actively encourage inclusive initiatives so everyone can connect and share.

• To go further: These elements are complemented in our Culture Book, which covers our culture, rituals, career paths and internal practices. Feel free to consult it.
  

At equal skills, this position is open to people with disabilities or equivalent status, in accordance with Article L5212-13 of the French Labor Code.

Partoo is actively committed to the employment of people with disabilities, notably through dedicated actions and its Disability ERG, and more broadly operates as a company with strong environmental, social and inclusion commitments. Partoo is B Corp certified.

As part of our recruitment process, personal data is processed in compliance with GDPR, within a secure environment aligned with ISO 27001 requirements.