Contractor job Back End Developer Python PHP (Anglais +)

Paris

Comet

API REST

OpenAPI

PHP

Python

SQL

Job position Back End Developer Python PHP (Anglais +)

Contractor

As soon as possible

6 months

460-510 €

5 to 10 years experience

Hybrid

Paris, France

Published on 09/01/2026

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Dans le cadre de l’intégration d’une solution tierce de paiement et de facturation au sein des systèmes backend d’une plateforme digitale, le développeur backend interviendra sur la conception et l’évolution des API, la gestion des flux de paiement, la maintenance de l’infrastructure existante de revenus/paiements et l’accompagnement de la transition entre des systèmes legacy et une nouvelle solution cible.

Environnement technique

Technologies principales :

Python (versions récentes)
PHP (maintenance et évolution d’un socle existant)

API & intégration :

Conception et développement d’API REST
Rédaction et exploitation de spécifications OpenAPI / Swagger
Intégration d’API tierces (solution de paiement/facturation)

Technologies complémentaires :

Bases de données SQL et/ou NoSQL
Authentification et autorisation
Sécurité des flux de paiement
Gestion de versions (Git)
Frameworks de tests (pytest ou équivalent)
Chaînes CI/CD
Architecture microservices (souhaitée)

Discover Comet

Paris, France

20 - 99 employees

Start-up

Comet, the agile talent ecosystem. We match our pool of over 50000 motivated and available, qualified and active tech freelancers, with company missions. Our goal is to satisfy both sides: relevant and prompt skills for companies, security and inspiring projects for freelancers. Comet’s freelance talent community comes highly motivated, because they choose the projects on which they work. We screen and evaluate the best tech and data talents to build an elite community. Powered by AI in order to intelligently detect, qualify and match a contingent workforce with corporate projects, to enhance and simplify user experience. With clients such as L’Oréal, Les Mousquetaires, Allianz, Pernod Ricard, Total -a client base that makes up 35% of the CAC40, we're the agile workforce for the digital age. To confront today's digitally-disrupted global marketplace and cater to the hyper-connected consumer of tomorrow, true agility is required. Technology alone is not enough, it is through the human that real transformation can be sustained. The technology is available and the consumer is ready. Comet provides the missing part: the people. We are 50+ in the team today, and are looking for amazing talents to join us! Our headquarters is in the hearts of Paris, Lyon, Lille and Nantes.

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Back End Developer Python PHP (Anglais +)

Comet