Senior Backend Engineer, Search Team

LumApps

Senior Backend Engineer developing search technologies for AI-powered Employee Hub. Focus on Elasticsearch, Python, and Go in a collaborative environment.

Posted 6/23/2026full-timeLyon • 🇫🇷 FranceSeniorWebsite

Tech Stack

Tools & technologies

ElasticSearchGoPython

About the role

Key responsibilities & impact

Shaping the future of the product is a key responsibility for Search engineers.
Defining features
Designing APIs and the underlying data model
Implementing business logic for various functionalities
Acting as a proactive partner for API consumers, especially our web and mobile applications
Optimization
Working closely with other team members (pair programming, design discussions, technical decision-making, Scrum ceremonies)

Requirements

What you’ll need

5 years of significant experience in Backend development, including experience with Elasticsearch
Initial solid experience with Python and Go
Ability to adapt in a fast-evolving environment, with a continuous improvement mindset and a willingness to learn from mistakes
Established working habits and openness to sharing and promoting them within the team
A favorite pastry—and the ability to explain why
Familiarity with modern development practices (testing, code reviews, CI/CD, version control, etc.)
Knowledge for search relevance
Strong written and spoken English skills

Benefits

Comp & perks

Hybrid work model – 2 days at the office, 3 days remote
RTT days – ~10 extra days off per year
Meal vouchers (SWILE) + free snacks & coffee
Yoga classes - Take a mindful break in our Paris office
Supportive parental leave and family moments — yes, even a Christmas party for your kids !
Health insurance (ALAN) – 60% covered + full life & disability cover
Afterworks, team celebrations & seasonal parties
Equipment of your choice
French & English lessons , professional development & access to Leeto CSE

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Backend developmentElasticsearchPythonGoAPI designBusiness logic implementationOptimizationTestingCode reviewsCI/CD

Soft Skills

AdaptabilityContinuous improvement mindsetOpenness to sharingCollaborationCommunication skills