Senior Java Backend Developer - Ranking Holidu Guests (f/m/d)



Software Engineering
Munich, Germany
Posted on Saturday, December 2, 2023

Senior Java Backend Developer - Ranking Holidu Guests (f/m/d)

Munich, Germany
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Holidu is a fast growing travel-tech company with travel enthusiasts from 60+ nations. Together, we are thriving to revolutionize the vacation rental industry by helping hosts to manage their vacation rental with ease and guests to find the perfect holiday home they truly enjoy. In October 2022, we secured €100 million Series E funding, allowing us to constantly improve our services and achieve the next milestone on our journey. Our team is united by a passion for modern technologies, an ambition for constant improvement and the drive to bring the best experience to more than 100 million users each year. Want to achieve amazing milestones with us? Then pack your bag, hop on board and get ready for take off!

Your future team

  • We are looking for someone to be a part of the Ranking team in the Guest Experience department. The team consists of backend engineers, a data analyst, data scientists and an engineering manager.
  • As a part of the team you will take an active part in shaping the way we rank our Holidu properties, to our first time or returning users. You will be responsible in productionizing various ML models built by our data scientists and building highly reliable user facing API’s for other parts of our website.
  • You will be working in close collaboration with the Discovery team (responsible for delivering user facing APIs for our list page) and Conqueror team (team responsible for the user journey from showing homes till the very end of the booking process).

Our Tech Stack

  • Backend applications are written in Java 11 and Kotlin (with Spring Boot and Play).
  • Deployed as microservices on AWS-hosted Kubernetes cluster (EKS).
  • Data storage with PostgreSQL, Redis, Elasticsearch 7 and Redshift (as part of a data lake structure).
  • Event-driven communication between services through ActiveMQ.
  • Streaming and queuing systems like Kafka and Firehose.
  • Heavy usage of AWS, Kubernetes, Docker, Jenkins, Git.
  • Monitoring with ELK, Grafana, Prometheus, AWS Cloudwatch, Looker and internally developed technologies.
  • Infrastructure management using terraform.

Your role in this journey

  • Together with your team members you will design, implement, evolve, and maintain our Java backend services.
  • You will be involved in the whole end-end software development process from ideation all the way through to release and monitoring.
  • You will have full responsibility for the delivery of features affecting 100 million users each month.
  • You will focus on delivering clear, well-designed highly available APIs for user-facing clients, as well as make sure all systems and processes are scalable.
  • You will lead strategic team-driven projects, identify opportunities, define and uphold quality standards, mentor engineers and participate in the hiring process of new engineers.
  • Work closely with product management and engineering managers to define the team's goals and engineering priorities.
  • Collaborate with the entire backend function to drive strategic technology decisions and own the team’s backend backlog.
  • Do you want to work more with Cloud? You will be responsible for designing the solution, provisioning the resources and integrating your applications directly with AWS as well as maintaining the internally provisioned resources.
  • Do you want to get your hands dirty with Elasticsearch? We also have our own self maintained ES cluster that devs maintain and monitor. You will get the opportunity to work with terraform internals.

Your backpack is filled with

  • 5+ years of professional development experience in Java.
  • Experience with developing web (micro)services with Spring Boot, using relational databases and deploying applications in a cloud environment.
  • Experience in optimising data delivery for speed and memory footprint over REST APIs.
  • Experience in managing critical concurrent processes.
  • Experience in designing and developing highly structured RESTful APIs.
  • Experience with technologies such as Airflow, DBT and/or Looker is a great plus.
  • You love coding and building world class products! We do and we hope you share our ambition!

Our adventure includes

  • Have an impact on the millions of people using our product every month.
  • Grow with responsibility from day 1 and develop yourself further through regular feedback, workshops and knowledge exchange.
  • Use your personal development budget and 2 extra days off to enhance your professional skills by visiting conferences, buying books, attending courses and more.
  • Connect and have fun with international, diverse and yet like-minded people at work, regular events and weekly office days with your team.
  • Get to know the world with our flexible home office policy and the opportunity to work from other local offices.
  • Go traveling for 28 vacation days + the possibility to take up to 10 unpaid vacation days with interesting discounts on our Holidu Homes.
  • Get a sneak peek at the adventure that awaits you on Instagram @lifeatholidu.

Want to travel with us?

Apply online on our career page! Your first travel contact will be Lucia from HR.

We champion diversity in every aspect of life. We encourage applications from all genders, corners of the world and individual backgrounds. Please feel welcome to submit your application without a photo and details on your gender, date of birth, marital status and nationality. If you have a disability or special need that requires accommodation, please let us know.


Munich, Germany