Back End Developer

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KR Recruitment Luxembourg are delighted to be recruiting this Backend Software Engineer for our client which is the European founder and Leader in its business. You’ll be part of a growing international team building a chart leading app that’s making a real difference in the lives of everyday people.

The group will offer you a climate that will allow you to have significant ownership, autonomy, and significant impact. You will also have a “work life” balance and inclusive culture that you will enjoy working within!


Your main responsibilities:

Work on algorithmic systems that may cover NLP, classification, recommendation, and optimization for topics such as fraud and spam detection, category and semantic extraction, and more

Orchestrate an Amazon cloud empire that uses Lambda, Redshift, Kinesis, and the latest infrastructure technologies to serve millions of users and hundreds of millions of requests monthly

Innovate, implement, and iterate on the online and offline server infrastructure and codebase

Collaborate with others across our engineering, product, design, and commercial teams

Actively contribute to product strategy across the board

Combine data, experience, and intuition to delight and astound the users

Operate within a strong devops culture, with ownership covering all parts of the software lifecycle from concept through development, testing, and support


Your profile:

Degree in Computer Science or Software Engineering

At least 5 years of experience in production backend development, preferably at significant scale

Deep understanding of lean software development: build, measure, learn, iterate – code with a clear purpose and experiment with metrics in mind

Good sense of responsibility to ship quick, quality releases for a highly used and loved app – an innate understanding of when to go fast and when to go slow

Solid foundations in general software engineering and both systems and release engineering concepts

Strong analytical and technical problem solving skillsKnowledge of Java (or similar) within a web services context

Proficiency with relational and non-relational database and data pipeline concepts

Expertise with cloud systems architecture

Fluency with Linux and open source systems administration

Exposure to statistical and algorithmic development, and the use or implementation of machine learning libraries and approaches, is a big plus

Professional working proficiency with English


For a confidential discussion regarding this role, please email us your CV in the first instance,, or call Andrei Gindac at 00352 27 85 30 43.