Java Software Engineer

€45K - €70K

NPAW

Backend Developer (+ 3 years)

Barcelona, Spain

Hybrid

Permanent

Java

About NPAW

NPAW is the leading video intelligence company helping online streaming services grow. A global pioneer in its space, NPAW has over a decade of experience developing ground-breaking, scalable analytics solutions to optimize performance and user engagement, to build media experiences that maximize revenue.

Its Suite of analytics apps provides advanced visibility of platform performance, audience behavior, advertising and content efficiency, and app navigation in real-time to support data-driven decisions. NPAW serves more than 150 video services and processes, with over 100 billion plays per year worldwide. Established in 2008 by co-founders of the video streaming service Rakuten TV, NPAW has offices in Barcelona and New York with teams around the world.

Your mission 👀

Building tools and software developed in Java that enables the creation and evolution of different products which allow their clients to understand users' behavior.
Optimization of existing services
Working along with their different departments to develop groundbreaking technology:
- Collaborating with the Product Team to create and develop new metrics to make valuable contributions to our Analytics Software.
- Cooperating with the UI department to offer a great data visualization experience.
- Collaborating with the Customer Engineering and Operations teams to plan the different custom development projects cycles and deliverables.
Crafting new functionalities able to process and analyze high volumes of data.

What they expect from you 🏅

Experience in projects as a back-end developer and using Java.
Experience working with local and distributed cache libraries to improve performance.
Experience ensuring APIs are always reachable, scalable, and capable of processing permanent high volumes of data.
Experience in service optimization.
Knowledge of Git version control system, and automation tools such as Jenkins or TeamCity.
Passionate about programming, always looking for solutions to solve engineering problems.
Not afraid of learning new things such as other programming languages, different technologies.
Dedicated and used to tight deadlines.
Can do attitude, commitment and pride in what you do.

Benefits & perks 💎

Flexible compensation plan:
- Restaurant
- Transport
- Nursery
- Health insurance
Hybrid remote-office work and flexible work schedule
23 days of holidays per year
Birthday afternoon off
Career growth opportunities and access to continuous training
Language lessons
Referral bonus
International & multicultural team (more than 20 nationalities!)
Fun environment: volunteering, company events, BBQs, pizza days, etc.
Free lunch at the office and free drinks, fruit & snacks

Featured challenges

You know what?
This offer comes with some Rviewer Challenges.
Solve one or more of them and start a fast-lane apply!

Challenge by

Beer tap dispenser API

Develop an API to manage self-service beer tap dispensers

Medium

Backend Developer

Middle · Senior

C# · Java · JavaScript · + 12

3 h

Introduction

Develop an API to manage self-service beer tap dispensers

Anyone who goes to a festival at least one time knows how difficult is to grab some drinks from the bars. They are crowded and sometimes queues are longer than the main artist we want to listen to!

That's why some promoters are developing an MVP for some new festivals. Bar counters where you can go and serve yourself a beer. This will help make the waiting time much faster, making festival attendees happier and concerts even more crowded, avoiding delays!

How it works?

The aim of this API is to allow organizers to set up these bar counters allowing the attendees self-serving.

So, once an attendee wants to drink a beer (0,0º, we are not promoting any kind of alcohol consumption! 👀) they just need to open the tap! The API will start counting how much flow comes out and, depending on the price, calculate the total amount of money.

You could find the whole description of the API and send some requests to a mock server at this URL

Workflow

The workflow of this API is as follows:

Admins will create the dispenser by specifying a flow_volume. This config will help to know how many liters of beer come out per second and be able to calculate the total spend.
Every time an attendee opens the tap of a dispenser to puts some beer, the API will receive a change on the corresponding dispenser to update the status to open. With this change, the API will start counting how much time the tap is open and be able to calculate the total price later
Once the attendee closes the tap of a dispenser, as the glass is full of beer, the API receives a change on the corresponding dispenser to update the status to close. At this moment, the API will stop counting and mark it closed.

At the end of the event, the promoters will want to know how much money they make with this new approach. So, we have to provide some information about how many times a dispenser was used, for how long, and how much money was made with each service.

⚠️ The promoters could check how much money was spent on each dispenser while an attendee is taking beer! So you have to control that by calculating the time diff between the tap opening and the request time
What are we looking for?
A well-designed solution and architecture. Avoid duplication, extract re-usable code where makes sense. We want to see that you can create an easy-to-maintain codebase.
Test as much as you can. One of the main pain points of maintaining other's code comes when it does not have tests. So try to create tests covering, at least, the main classes or paths.
Document your decisions. Try to explain your decisions, as well as any other technical requirement (how to run the API, external dependencies, etc ...)

Java Software Engineer

€45K - €70K

Hybrid

NPAW

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