Our client is a killer mobile app with millions of users, backed by investment and solid user-base is looking to expand its team based in Luxembourg.

We are looking for a Senior Backend Engineer with the experience in Java, or any other object-oriented language. As a Senior Backend Engineer on the team, you will be passionate about building a great product, understanding company’s business, and both understanding and delighting their users. You like working on hard problems, and especially hard scale-oriented problems, and have great intuition for when to hack and when to engineer. You are smart, creative, curious, humble, and also self-driven to make things better. You will join a small team where everyone matters and makes a real impact and that impact will inspire you. You will have a good academic and practical foundation, but we know that smart, self-driven people can fill in most skill gaps quickly.  Does this sound like you?

This job is based in Luxembourg – a diverse and multicultural country located in the heart of Europe (


  • Innovate, implement, and iterate on online and offline server infrastructure and codebase;
  • Actively contribute to product strategy across the board;
  • Combine data, experience, and intuition to delight and astonish our users;
  • Operate within a strong DevOps culture, with ownership covering all parts of the software lifecycle from concept through development, testing, and support;
  • Work on algorithmic systems that may cover NLP, classification, recommendation, and optimization for topics such as fraud and spam detection, category and semantic extraction, job matching, 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;
  • Collaborate with others across the engineering, product, design, and commercial teams;


You have the following skills and experience:

  • 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 skills;
  • Knowledge of Java (or similar) within a web services context;
  • Proficiency with relational and non-relational database and data pipeline concepts;
  • Expertise in 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 in English;
  • Degree in Computer Science or Software Engineering;

Why you should go for this opportunity:

  • You’ll be part of a growing international team building an exciting product that’s making a real difference in the lives of everyday people;
  • You’ll have significant ownership, autonomy, and impact on a chart-leading app;
  • You’ll be proud of your work, helping millions of people;
  • You’ll get a competitive compensation package;
  • You’ll get to work in Luxembourg – an amazing country nestled between Belgium, France, and Germany that’s great for families, outdoor enthusiasts, foodies, people who enjoy shorter commutes, Europhiles, and everyone in between.

For more information please contact Kristel Weinreich by phone on +352 26 29 45 26.

THE RECRUITER is a recruitment and executive search company specialized in ICT – Telecoms – Digital – Cleantech – Services & Industry. THE RECRUITER empowers companies in their recruitment and HR projects, trusting that Human Factor, thanks to committed, motivated and implicated people, will bring success and added value to any business. THE RECRUITER defines its core values as transparency, flexibility, professionalism, and commitment. We apply these rules to any HR project we are in charge of.


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