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NEXTON

Builds digital projects for large French firms

Expert Technique Senior

Full-Time
No salary listed
Senior
Lyon, France
In Person
Software EngineeringBackend Engineering

About the job

Requirements
  • At least 5 years of experience as a Technical Expert or Tech Lead on complex application architectures.
  • Expertise in Java development, Domain-Driven Design, and Test-Driven Development.
  • Knowledge of Kafka, Oracle Database, Elasticsearch, Flume, Storm, Infinispan, Drools, and Spring.
  • Proficiency with JIRA and Confluence for collaboration and agile management.
  • Rigor, autonomy, advanced analytical abilities, and strong interpersonal skills for collaboration with cross-functional teams.
Responsibilities
  • Manage complex technical workstreams by evolving the architecture with a focus on robustness and performance.
  • Design, develop, and optimize solutions that effectively address the project's business needs.
  • Take responsibility for complex development and regularly conduct code reviews within the team.
  • Provide highest-level technical support and assist colleagues with engineering challenges.
  • Help diagnose and rapidly resolve critical production incidents.
  • Ensure the overall quality and compliance of application deliverables.
  • Write technical documentation and facilitate workshops to coordinate with security and enterprise architecture.

About the company

NEXTON plans and builds digital projects for large French companies and online businesses, combining digital strategy with software development and marketing. Its teams cover product management, user-experience design, agile delivery and data work, and build websites, mobile applications and customer communications. Clients pay for specialist consultants assigned to their teams or for projects delivered by NEXTON's own agency. The agency combines designers, developers and marketing specialists to handle projects from planning and interface design through development and delivery. Founded in Paris in 2011, NEXTON is headquartered there at 5-7 rue Saint-Fiacre and operates across France.

Company Size

N/A

Company Stage

N/A

Total Funding

N/A

Headquarters

Paris, France

Founded

2011

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Simplify Jobs

Simplify's Take

What believers are saying

  • NEXTON recruits entirely on permanent employment contracts, providing a salaried path into client assignments.
  • NEXTON consultants joined client Veolia at Google's enterprise-AI event in March 2026, studying tools alongside customer teams.
  • NEXTON's client portfolio spans rail, telecom and insurance through SNCF, Orange and AXA.

What critics are saying

  • NEXTON's Montpellier Java role pairs new banking features with incident analysis and corrective maintenance, per October 2026 posting.
  • French demand exposure: Numeum reported 1.8% contraction for 2025 IT services in December 2025; NEXTON's six offices are French.
  • NEXTON's Paris customer marketing lead handles mobile campaigns and supervises an apprentice, per its October 2026 posting.

What makes NEXTON unique

  • NEXTON runs an in-house digital factory in rural Saint-Augustin, extending project delivery beyond metropolitan offices.
  • Figma lists NEXTON as a service partner for design-system implementation, migration and team training.
  • NEXTON's seven employee-run communities connect mentoring, software, design, AI/data, sustainability, agile product work and sport.

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Benefits

  • Commuter Benefits
  • Professional Development Budget