Careers

About Blub Blub

Blub Blub Inc. creates high-quality smart screen time for children. Our most popular product is Speech Blubs, which was released in 2017 and is now the #1 speech and language app and #5 top-grossing app for children aged 5 and under in the U.S.A. The app boosts young children's comprehension and extends their vocabulary, whilst improving their pronunciation, attention, and even their emotional regulation.

Our team is comprised of 30 parents, designers, growth experts, UX experts, data analysts, engineers, marketers, and content creators. We are customer-centric, data-informed, and revenue-driven. Our team (average age 27) is based in Ljubljana (Slovenia, EU), and we work with experts, therapists, modeling agencies, and video production partners from Florida, London, Madrid, Johannesburg, and elsewhere.

7 open positions:

Data scientist

Do you get butterflies in your stomach and sweaty palms when you hear words like MLA, prediction, Python? Then you might just be the right for us so please read on.

Basically, we are looking for someone who will move analytics to the next level. What does that mean? In the beginning product insights, that will be used by product and marketing teams, developing a prediction algorithm for the most appropriate exercises for the children, calculating LTV models and automation of AB test analytics.

Later on, the direction of development will depend on you.

Responsibilities:

  • Ad-hoc analysis and visualization of results
  • Presenting product insights to the product team
  • Building a recommendation system for our app
  • LTV modeling 
  • Connecting data from various data sources (iTunes, Google Play, Mixpanel, Branch)
  • AB test analytics and its automation

We are looking for someone who:

  • Is curious and has a strong desire for problem-solving
  • Has experience with using statistics and mathematics in practice
  • Is self-initiative and independent
  • Someone who has experience with programming languages (Python, R and/or similar)
  • Practical experience with data modeling and MLA
  • Experience with data visualizations (Tableau, Data Studio)

What do we offer?

  • Contract with Blub Blub Inc. for an indefinite period of time, with a 3-month probationary period.
  • Startup environment with couches, ping pong table and sunny balcony in Ljubljana city center. 
  • Mentorship and opportunity for personal and professional growth.
  • Best team ever!

Do you see yourself in the description above? Send your application to dal@blubblub.org, and let’s meet for a coffee.

iOS Engineer

Responsibilities:

  • Develop features in an Agile team.
  • Constantly optimizing and improving the current codebase.
  • Cooperate closely with designers, product owners and the Android team.
  • Learn and adopt new technologies as soon as they are released.

Our stack:

  • We support iOS 12 and up.
  • We always use latest Swift (5.1 currently).
  • We use REST APIs and Realm database.
  • We use Mixpanel for A/B testing and Firebase for crash reporting.
  • We use Fastlane to deploy.

What do we expect:

  • Excellent programming skills in Swift.
  • Experience with various data architectures and paradigms.
  • Experience fixing crashes and from stack tracing tools.
  • At least 1-2 years of experience in software engineering.
  • Knowledge of App Store and app submission processes.
  • Experience with version control systems (Git).
  • Fluency in English language (written and spoken).

What brings extra points:

  • Experience developing apps for children.
  • Experience developing apps with a subscription business model.
  • Experience with A/B testing services.
  • Experience with analytics services.
  • Experience with UI and unit testing.
  • Contribution to open source projects.
  • Knowledge of agile development workflows.

What do we offer:

  • Contract with Blub Blub Inc. for an indefinite period of time, with a 3-month probationary period.
  • Cozy startup environment with couches and sunny balcony in the center of Ljubljana.
  • Young and ambitious team with the vision of helping as many children as possible with their language abilities.
  • Visit conferences and participate in internal development workshops.
  • Mentoring with opportunity for personal and professional development.

dal@blubblub.org is eagerly awaiting your application! 🙌

Android Engineer

We’re looking for an Android Engineer, who would join our team developing our Speech Blubs app.

Responsibilities:

  • Develop features in an Agile team.
  • Constantly optimizing and improving the current codebase.
  • Cooperate closely with designers, product owners and the iOS team.
  • Learn and adopt new technologies as soon as they are released.

Our stack:

  • We support Android 5.0 and up.
  • We use Java with some Kotlin.
  • We use REST APIs and Realm database.
  • We use Firebase for A/B tests and crash reporting.

What do we expect:

  • Excellent programming skills in Java (and/or Kotlin).
  • Experience with various data architectures and paradigms.
  • Experience fixing crashes and from stack tracing tools.
  • At least 1-2 years of experience in software engineering.
  • Knowledge of Play Store and app submission processes.
  • Experience with version control systems (Git).
  • Fluency in English language (written and spoken).

What brings extra points:

  • Experience developing apps for children.
  • Experience developing apps with a subscription business model.
  • Experience with A/B testing services.
  • Experience with analytics services.
  • Experience with UI and unit testing.
  • Contribution to open source projects.
  • Knowledge of agile development workflows.

What do we offer:

  • Contract with Blub Blub Inc. for an indefinite period of time, with a 3-month probationary period.
  • Cozy startup environment with couches and sunny balcony in the center of Ljubljana.
  • Young and ambitious team with the vision of helping as many children as possible with their language abilities.
  • Visit conferences and participate in internal development workshops.
  • Mentoring with opportunity for personal and professional development.

dal@blubblub.org is eagerly awaiting your application! 🙌

NodeJS Engineer

We’re looking for a NodeJS Engineer, who would join our team developing backend infrastructure, data models and pipelines, analytics tools with a highly scalable architecture, that is supporting our mobile apps.

Responsibilities:

  • Develop features in an Agile team.
  • Constantly optimizing and improving the current codebase.
  • Cooperate closely with product owners and Android and iOS teams.
  • Learn and adopt new technologies as soon as they are released.

Our stack:

  • We use NodeJS, MongoDB, and Express for our API’s.
  • We use JavaScript ES6 wherever possible.
  • We provide REST API, services and queues for our mobile apps.
  • For infrastructure we use Heroku, Docker, DigitalOcean and AWS.

What do we expect:

  • Excellent programming skills in JavaScript.
  • Experience with various data architectures and paradigms.
  • At least 1-2 years of experience in software engineering.
  • Knowledge of Git, or similar versioning tools.
  • Fluency in English language (written and spoken).

What brings extra points:

  • Experience developing services hosted on Heroku and/or AWS.
  • Experience developing scalable backend systems.
  • Experience with analytics services.
  • Experience with unit testing.
  • Contribution to open source projects.
  • Knowledge of agile development workflows.

What do we offer:

  • Contract with Blub Blub Inc. for an indefinite period of time, with a 3-month probationary period.
  • Cozy startup environment with couches and sunny balcony in the center of Ljubljana.
  • Young and ambitious team with the vision of helping as many children as possible with their language abilities.
  • Visit conferences and participate in internal development workshops.
  • Mentoring with opportunity for personal and professional development.

dal@blubblub.org is eagerly awaiting your application! 🙌

Product Analyst

At Blub Blub we’re helping kids from around the world develop their speech and language skills. We’re looking for a Product Analyst, who would help us evolve our apps with data insights.

Do you get butterflies in your stomach and sweaty palms when you hear words like Google Analytics, Mixpanel, predictions, Python? Basically, we are looking for someone who will move analytics to the next level.

Responsibilities:

  • Evaluate KPIs, provide ongoing reports, and recommend business plan updates.
  • Ad-hoc data analysis and visualization of results.
  • Presenting product insights to the product team.
  • Developing and implementing data analyses, data collection systems and other strategies that optimize statistical efficiency and quality.
  • Acquiring data from primary or secondary data sources and maintaining databases.
  • Analyzing data from various data sources (App Store, Google Play, Mixpanel, Branch, …)
  • Setting up AB tests and tracking progress.

What do we expect:

  • Establish and organize KPIs in line with company directives.
  • Is curious and has a strong desire for problem-solving
  • Is self-initiative and independent.
  • Experience using statistics and mathematical models in practice.
  • Interpreting data, analyzing results using statistical techniques.

What brings extra points:

  • Experience with mobile application analytics tools (iOS, Android).
  • Familiarity with online analytics tools such as Mixpanel, Firebase, …
  • Experience with programming languages (Python, R and/or similar)
  • Practical experience with data modeling and MLA.
  • Experience with data visualizations in several tools.

What do we offer?

  • Contract with Blub Blub Inc. for an indefinite period of time, with a 3-month probationary period.
  • Startup environment with couches, ping pong table and sunny balcony in Ljubljana city center.
  • Mentorship and opportunity for personal and professional growth.
  • Best team ever!

If you meet the above requirements and would like to join us, send your application in English or Slovenian to dal@blubblub.org.

Visual Designer – Marketing

Responsibilities:

  • Design outstanding, innovative and effective marketing ADs.
  • Design of newsletter and landing pages.
  • Be responsible for the visual language of all our ADs, Newsletters and promo materials.
  • Recognize and stay up-to-date with trends, patterns, and consumer preferences.
  • Demonstrate an opinionated and motivated attitude to your work.
  • Be driven to what you’re designing. We will not settle for image makers
  • Create designs that will attract the attention of millions of parents worldwide!

Required Skills:

  • Self-motivated attitude with the ability to work in a fast-paced and young environment.
  • An imaginative and innovative approach to tasks.
  • Up to date with social marketing.
  • ADs networks knowledge is a great plus. 
  • Good knowledge of Sketch and Adobe Creative Suite.
  • Experience with Adobe After Effects or other animation software.
  • Web designing skills are a plus.
  • Strong communication skills, with fluency in the English language.
  • Solid understanding of design processes, information displays, and creative workflows.
  • 1+ years of experience working either formally or informally as a visual designer.
  • A portfolio of real and not conceptual work is required.

We offer:

  • Work with a young and fast-growing team.
  • Employment with a three-month probationary period.
  • Diverse work with exciting daily tasks inside of a very relaxed working environment.
  • The opportunity for personal and professional development.
  • Participation in attractive projects with bonus pay opportunities.

If you meet the above requirements and would like to join us, send your application in English or Slovenian to karlo@blubblub.org.