Back-End Developer Golang H/F Ipsos
Paris - 75 CDI- Télétravail partiel
- Bac +2
- Bac +3, Bac +4
- Bac +5
- Média • Internet • Communication
Les missions du poste
Company Description
At Synthesio, we transform 80 million daily social posts into actionable insights for global brands like Michelin, Renault, Sanofi, and many others, thanks to our real-time AI stack.
We, Ipsos Synthesio, are a leading marketing SAAS company. Our technology allows global brands to make business decisions based on online consumer feedback. We centralize public data from many providers, such as posts on social networks, press articles, forums, search data and more. After the collection phase, we enrich IT through AI models and provide intelligence in many visualizations and APIs.
You want to join a deep tech and growing company with at-scale generative artificial intelligence applications, we are hiring candidates !
Lastly, at Synthesio, we have a strong tech culture. This means the teams have an important role. Each squad is empowered, owns together the success of the projects, and chooses their deliverables and their timelines.
Our department
The Synthesio product engineering department is focused on data provisioning, enrichment, and exploitation.
Synthesio crawls numerous public consumer data footprints including social, reviews and ratings, survey, search, and press data, representing more than 80M new documents per day. Each document is then analyzed and enriched using custom NLP and image recognition models developed by our data scientists. All this data is stored in databases and can BE accessed by our customers via our dashboarding solution or our APIs.
Job Description
As a member of the back-end team, you will :
- BE a full-time member of a squad
- Maintain processing pipelines of80 M documents ingested per day and 100 billion in storage
- Design solutions for squad projects, in collaboration with the product owner and the other back-end/front-end/machine-learning developers of the squad
- Develop and implement these projects
- Define milestones for project implementation and deployment
- Evolve and maintain the tools and libraries shared by the back-end team
Our back-end stack : GO, Python, JS, React, MySQL, Elasticsearch, Cassandra, Kafka, Gitlab, Docker, Ansible.
Our platform uses a microservice architecture containing 200+ microservices, most of them written in GO and using Kafka or HTTP to communicate.
The hardware infrastructure is composed of hundreds of rented bare metal servers running Debian. A big part of IT is dedicated to storage, including :
1 PB+ Elasticsearch, 750TB+ MySQL clusters, 150 TB+ Scylla DB, and 250TB+ of Kafka.
Example projects we've worked on :
- Add vector search capabilities.
- Data usage tracking to enable cost monitoring and tailored billing.
- Implement new crawlers to retrieve documents from more diverse sources.
- Revamp of the alerting system for increased stability and additional functionalities.
- Custom AI enrichments for clients to further personalize their experience and usage.
Le profil recherché
Preferred Experience
Preferred Experience :
- Experience with complex microservice architecture is preferred
- Knowledge of Golang is beneficial but not required
- Interest in system performance and robustness
- Prior experience with very large amounts of data, message queues and high-throughput processing
Soft Skills :
- Rigor and strong appetite for software quality
- Interest in manipulating dozens of microservices in data processing pipelines handling billions of documents
- Curiosity and passion to discuss the consequences of a design choice
- Good communicator, self-starter, and collaborative enthusiast
- Interested in understanding user needs
- Independent, self-organizing, and able to prioritize multiple complex assignments
- Represent the organization and advocate its technological efforts and capabilities using external presentations and publications
- Interested in multicultural companies
- Fluent in French and English in writing, speaking, and reading
Recruitment Process
- A 30-minute screening phone call with a Back-end Manager
- A 60-90-minute interview with some engineers of the team (video call possible)
- A 2-hour live coding interview, where you will BE asked to create a program that solves a (mostly realistic) problem (so no need to cram algorithms !), in the language of your choice (Video call possible)
- Optional meet & greet (30 minute each) with various members of the team (Product Managers, Site Reliability Engineers, and Front-end engineers...) (video call possible)
- Proposal
Additional Information
- Contract Type : Full-Time
- Start Date : 01 September 2025
- Location : Paris
- Possible partial remote
Bienvenue chez Ipsos
About
Ipsos est le leader en France des études de marché et des enquêtes d'opinion. Groupe français indépendant, fondé en 1975, Ipsos opère aujourd'hui dans 90 pays et donne aux entreprises et aux institutions pour lesquelles il travaille, les clés de compréhension de la société, des marchés, des citoyens et des consommateurs.
Une mission qui s'appuie sur la disruption numérique, l'extension des domaines d'observations et l'innovation continue pour améliorer la finesse des analyses.
Intégrer Ipsos aujourd'hui c'est :
- Choisir un métier passionnant au coeur des enjeux d'actualités et des transformations de la société.
- Bénéficier d'une multiplicité d'opportunités d'apprentissage dans des secteurs différents : le marketing, la publicité, les médias, la politique, le CRM, qui intègrent les dernières innovations digitales et technologiques.
- Se voir confier des responsabilités immédiatement sur des études avec de véritables perspectives d'évolutions professionnelles.
- Evoluer au sein d'un groupe international dans lequel les opportunités de mobilité sont une réalité.
Pour répondre aux nouveaux besoins de ses clients, Ipsos dispose de plus de 75 services différents regroupés dans 17 Lignes de Services.
Cette nouvelle organisation nous permet d'aiguiser nos expertises pour apporter à nos clients des réponses précises à leurs questions, en nous permettant d'être plus spécialisés, rapides et homogènes sur tous les marchés.
Hellowork a estimé le salaire pour ce métier à Paris
Le recruteur n'a pas communiqué le salaire de cette offre mais Hellowork vous propose une estimation (fourchette variable selon l'expérience).
Estimation basée sur les données INSEE et les offres d’emploi similaires.
Estimation basse
42 500 € / an 3 542 € / mois 23,35 € / heureSalaire brut estimé
51 200 € / an 4 267 € / mois 28,13 € / heureEstimation haute
65 000 € / an 5 417 € / mois 35,71 € / heureCette information vous semble-t-elle utile ?
Merci pour votre retour !
- Paris - 75
- CDI
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