Our Mission:

To help preschoolers thrive by providing fun, kid-to-kid learning applications.

Blub Blub story

Once upon a time, there were 4 boys who grew up with speech problems. Today we are empowering children to speak their minds and hearts, and co-create a better tomorrow. You can read our entire story below.

“Let’s create a speech therapy tool that kids will love.” was the idea we started with. We rolled up our sleeves and got started. Field research, design, prototypes, coding, video editing, feedback. Rinse, repeat, and head back to the drawing board.

Once we had our first prototype we took it on a tour of the world. We sought feedback from thousands of therapists, teachers, parents, and kids, visiting them in their clinics, schools, and homes all the way from Slovenia to San Francisco. We exhibited at IALP 2016, ATAAC 2017, and ASHA CONVENTION 2017, all just to get invaluable feedback.

We followed our calling and right after we published the first version, our inboxes were flooded with thank-you emails and testimonials, describing cases of kids with speech delays, apraxia, Down syndrome, autism, and more. We realized we have the power to help kids come out of their shells, make noises, syllables, words, and sentences! We obviously have a product that can boost any child’s confidence, speech, and intellectual potential. We have changed the lives of many kids and their parents and that’s why our team is growing, expanding, and constantly seeking to tackle new educational challenges.

1 in 4 kids needs help with speech and languagesome parents need to wait up to 2 years for an available therapist to get their child assessed by a professional. 2 years of a child’s life is an absolute eternity in lost cognitive and social development. We are not sure where this journey is going to take us, but we are sure we’ll be helping more kids tomorrow than we did yesterday. You can contact us at hi@blubblub.org

Our founders

Jernej Fuzir

CEO

Mitja Mavsar

CIO

Dal Rupnik

CTO

Open positions

ENGINEERING

Frontend Javascript Engineer

Ljubljana, Remote - SLO

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We’re looking for a frontend JavaScript engineer, who would join us and work on our Speech Blubs app (speechblubs.com), which has already helped over 4,000,000 kids from all around the world!

We help kids aged 1-5 develop their speech and primary language through approved therapeutic techniques, while using different technological approaches such as video-modelling, AI, facial recognition, voice activation and even personalization for each user.

Responsibilities:

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

Our stack:

  • We use JavaScript ES6 wherever possible.
  • We use Vue/Nuxt.js to build our web apps.
  • We use REST API to connect our NodeJS backend.
  • We use WordPress as CMS for our blog and landing pages.
  • For infrastructure we use Heroku, 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, Heroku and similar development tools.
  • Fluency in English language (written and spoken).

What brings extra points:

  • Experience with Vue/Nuxt.js.
  • Experience with WordPress themes and plugins.
  • Experience developing frontend web apps hosted on Heroku and/or AWS.
  • Experience developing responsive web apps.
  • Experience with analytics services.
  • Experience with unit testing.
  • Contribution to open source projects.
  • Knowledge of agile development workflows.

What do we offer:

  • Full-time contract with 6-month probationary period
  • Young, agile and ambitious team with the vision of making an impact
  • Structured pay raise plan based on personal bi-annual and annual goals
  • Personal mentorship, opportunities to visit conferences, take online technical courses and participate in internal development workshops
  • Flexible working hours and different home office / office combinations
  • All work equipment & open modern office space in the centre of Ljubljana

About Blub Blub

Blub Blub Inc. creates high-quality smart screen time for children through our flagship Speech Blubs app, which was released in 2017 and is now the #1 speech and language app and #5 top-grossing app for children 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.

We intend to become a leading player in early childhood education sector, with the offering of products that will help our users from saying the first words to having all the skills necessary to have a headstart in school.

Our team includes designers, marketers, growth experts, UX experts, data analysts, engineers, marketers, content creators, early education experts and psychologists. We are user- and customer-centric, data-informed, impact driven, and revenue-oriented. 

We have offices in Ljubljana (Slovenia), but work globally with experts, therapists, modeling agencies, and video production partners from Florida, London, Madrid, Johannesburg, Zagreb, …

If you want to test our app, let us know and we will be happy to send you a promo code! 

ENGINEERING

Lead JavaScript Engineer

Ljubljana, Remote - SLO

Read more

We’re looking for a Lead JavaScript engineer, who would join us and work on our Speech Blubs app (speechblubs.com), which has already helped over 4,000,000 kids from all around the world!

We help kids aged 1-5 develop their speech and primary language through approved therapeutic techniques, supported by machine learning algorithms, based on large scale data sets. That gives us the ability to personalize the product for each user.

Responsibilities:

  • Lead a team of engineers and help mentoring their careers.
  • Develop backend features on NodeJS in a team of 3+ engineers.
  • Constantly optimizing and improving the current codebase.
  • Cooperate closely with designers, product owners and Android and iOS teams.
  • Learn and adopt new technologies as soon as they are released.

Our stack:

  • We use NodeJS and MongoDB for our backend services.
  • We use JavaScript ES6 wherever possible.
  • We provide REST API, services and queues for our mobile apps.
  • We use Nuxt/Vue to build our frontend web apps.
  • For infrastructure we use Heroku, DigitalOcean and AWS.

What do we expect:

  • Excellent programming skills in JavaScript.
  • Experience with various data architectures and paradigms.
  • At least 3-4 years of experience in software engineering.
  • Expert knowledge of Git, Heroku and similar development 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 developing responsive web apps.
  • Experience with analytics services.
  • Experience with unit testing.
  • Contribution to open source projects.
  • Knowledge of agile development workflows.

What do we offer:

  • Full-time contract with 6-month probationary period
  • Young, agile and ambitious team with the vision of making an impact
  • Structured pay raise plan based on personal bi-annual and annual goals
  • Personal mentorship, opportunities to visit conferences, take online technical courses and participate in internal development workshops
  • Flexible working hours and different home office / office combinations
  • All work equipment & open modern office space in the centre of Ljubljana

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

More about Blub Blub

Blub Blub Inc. creates high-quality smart screen time for children through our flagship Speech Blubs app, which was released in 2017 and is now the #1 speech and language app and #5 top-grossing app for children 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.

We intend to become a leading player in early childhood education sector, with the offering of products that will help our users from saying the first words to having all the skills necessary to have a headstart in school.

Our team includes designers, marketers, growth experts, UX experts, data analysts, engineers, marketers, content creators, early education experts and psychologists. We are user- and customer-centric, data-informed, impact driven, and revenue-oriented. 

We have offices in Ljubljana (Slovenia), but work globally with experts, therapists, modeling agencies, and video production partners from Florida, London, Madrid, Johannesburg, Zagreb, …

If you want to test our app, let us know and we will be happy to send you a promo code! 

ENGINEERING

iOS Engineer

Ljubljana, SLO

Read more

We’re looking for an iOS Engineer, who would join us and work on our Speech Blubs app (speechblubs.com), which has already helped over 5,000,000 kids from all around the world!

We help kids aged 1-5 develop their speech and primary language through approved therapeutic techniques, while using different technological approaches such as video-modelling, AI, facial recognition, voice activation and even personalization for each user.

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 the latest two iOS releases (14 and up).
  • We always use the latest Swift (5.5 currently).
  • We use REST APIs and Realm database.
  • We use Fastlane to deploy and Swift Package Manager.

What do we expect:

  • Excellent programming skills in Swift.
  • At least 1-2 years of experience in software engineering.
  • Experience fixing crashes and from stack tracing tools.
  • 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 with SwiftUI and/or Combine.
  • Experience with CreateML and CoreML and machine learning techniques.
  • Experience with augmented reality (ARKit), SceneKit, SpriteKit frameworks.
  • Experience developing apps with StoreKit using a subscription business model.
  • Contribution to open source projects.

What do we offer:

  • Full-time contract with 6-month probationary period
  • Young, agile and ambitious team with the vision of making an impact
  • Structured pay raise plan based on personal bi-annual and annual goals 
  • Annual bonus and stock option
  • Personal mentorship, opportunities to visit conferences, take online technical courses and participate in internal development workshops
  • Flexible working hours and different home office / office combinations
  • All quality work equipment and software provided (we use Apple devices)
  • Modern open office space in the centre of Ljubljana with a nice terrace overseeing the city life
  • 24/7/365 access to fitness, saunas and swimming pool in Intercontinental Ljubljana (which is 50m from the office)

More about Blub Blub

Blub Blub Inc. creates high-quality smart screen time for children through our flagship Speech Blubs app, which was released in 2017 and is now the #1 speech and language app and #5 top-grossing app for children 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.

We intend to become a leading player in early childhood education sector, with the offering of products that will help our users from saying the first words to having all the skills necessary to have a headstart in school.

Our team includes designers, marketers, growth experts, UX experts, data analysts, engineers, marketers, content creators, early education experts and psychologists. We are user- and customer-centric, data-informed, impact driven, and revenue-oriented. 

We have offices in Ljubljana (Slovenia), but work globally with experts, therapists, modeling agencies, and video production partners from Florida, London, Madrid, Johannesburg, Zagreb, …

If you want to test our app, let us know and we will be happy to send you a promo code! 

ENGINEERING

Quality Assurance Engineer Junior

Ljubljana, SLO

Read more

We’re looking for a QA Engineer who would join us to work on our Speech Blubs app (speechblubs.com), which has already helped over 5,000,000 kids from all around the world! Due to this fast pace and constant growth, we’re always on the lookout for new talents who would help us make an impact.

We help kids aged 1-5 develop their speech and primary language through approved therapeutic techniques such as video-modelling and gamification while using different technological approaches such as AI, facial recognition, voice activation and even personalization for each user.

Responsibilities we expect from you:

  • Review quality specifications in an agile team.
  • Create detailed, well-structured test plans and test cases.
  • Estimate, prioritize and plan testing activities.
  • Provide descriptive and quality feedback to engineers.
  • Tracking quality assurance metrics, such as open bug report counts.

Desired Skills / Knowledge:

  • Excellent organizational and prioritization skills.
  • Basic knowledge of software QA methodologies, tools and processes.
  • Experience working with different teams in agile environment.
  • Understanding and representing end-customer in the team.
  • Sense of responsibility and a make-it-happen attitude.
  • Attention to details.
  • Fluency in English language (written and spoken).

What brings extra points:

  • Experience with UI tests on web and mobile.
  • Experience with automating scripts with open source tools.
  • Experience with black box and white box testing.
  • Experience writing unit tests.
  • Knowledge of Git, or similar versioning tools.
  • Contribution to open source projects.
  • Sense of humor 🙂 

What do we offer:

  • Full-time contract with 6-month probationary period
  • Young, agile and ambitious team with the vision of making an impact
  • Structured pay raise plan based on personal bi-annual and annual goals 
  • Annual bonus and stock option
  • Personal mentorship, opportunities to visit conferences, take online technical courses and participate in internal development workshops
  • Flexible working hours and different home office / office combinations
  • All quality work equipment and software provided (we use Apple devices)
  • Modern open office space in the centre of Ljubljana with a nice terrace overseeing the city life
  • 24/7/365 access to fitness, saunas and swimming pool in Intercontinental Ljubljana (which is 50m from the office)

More 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 parents, designers, marketers, growth experts, UX experts, data analysts, engineers, marketers, and content creators. We are customer-centric, data-informed, and revenue-driven. Our team 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.