Senior Software Engineer Java Backend (M/F) - V3D, SoftAtHome company
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Senior Software Engineer Java Backend (M/F)

V3D is a pionneer in Quality of Experience (QoE) for mobile operators. As a software editor, our development skills and understanding of telecom operators needs allow us to offer solutions for monitoring network performance directly from smartphones and broadband devices. Our mobile application, integrated as SDK, is currently deployed to several millions of handsets in the world.

V3D is part of SoftAtHome, a company that develops specific firmwares for the equipments of the digital home (gateways, routers, set-top boxes, voice assistants).

V3D, it’s also 30 people working in Lyon in a relaxed and stimulating work environment. We are attached to our startup and local spirit, while acting globally with an international reach. V3D is a talented and innovating team taking good time working together on solutions excellence.

Within a passionate expert R&D team, you will take part of the development of our products. The millions of measurements gathered each day are processed in a realtime streaming flow for aggregation, alerting, statistics and exposed through a web UI as well as API’s to mobile operators.


  • Participate to architecture construction and software design of the product
  • Evolution and optimisation of the realtime processing of the measurements. The product is currently based on a Java/Hazelcast/Kafka for distributed computing
  • Development of the technical and functional requirements
  • Technical support and maintenance of the product
  • Participate to structure development process environment (Continuous integration, Unit testing strategy, Performance benchmarks…)


The design and implementation of complex software solutions are at the heart of your expertise. You have a keen interest for mass data computing (Big Data) in streaming or on-demand mode.

Performance, distributed computing and its impact on the architecture are motivational challenges for you. A real life experience on these subjects is a real plus for this position.

You like to code and implement various technical stacks in the solutions you design, and you have a strong expertise on real productions systems.

You are interested in software architecture and are are aware of the latest technical stacks.

You appreciate to work autonomously within a collaborative team of experts. You want to be involved and bring your own value on functional and technical choices in direct link with product owners. Moreover, you are open, a strong team player and creative.

This job is done for you, join us quickly!


  • Expert in server-side Java
  • Experience in big data solution and clusters
  • Very good knowledge of at least 3 of the following stacks
    • Processing: Hazelcast, Kafka
    • Storage: Elasticsearch, MySQL, Cassandra
  • Knowledge of PHP is a bonus.
  • Experience on UI frameworks is appreciated: JS, Angular, Bootstrap
  • Good skills on test automation tools: Git, Docker, Jenkins, Nexus, Ansible


French and technical English, written and spoken.


  • Type of contrat: Full time
  • Salary: depends on profile
  • Starting: ASAP
  • Location: Lyon, FR.


  • You can benefit from one home office day per week,
  • State-of-the-art laptop, docking station and 3 large screens to code confortably,
  • A smartphone with unlimited voice and data,
  • Free coffee, mandatory for most of us, regular “croissants” for breakfast and let’s not forget our internal baby foot challenges!

Interested by our mission & sharing our values?

Send your resume to