Senior Scala Engineer with Akka experience



What we are doing


Kaizo aims to actively guide employees towards achieving their goals and making an impact at their companies.


We are building a performance development platform for customer support teams that leverages gamification and AI to improve operational efficiency, elevate teams' performance and retention with actionable goals. We are a product-led, fast-growing SaaS company with a diverse team and a globally active customer base.



  • Kaizo is leveraging gamification and machine learning to make the daily work experience for customer support agents more engaging, fun and productive.

  • We run a microservice-based stream processing platform which processes 200+ million events every day using Akka Streams and Kafka.

  • Those services are deployed to Kubernetes on Google Cloud and feed data into Elasticsearch and Mongodb.

  • Our systems are designed to be reactive, e.g. responsive, resilient, elastic, and message-driven.

  • We are building a realtime Machine Learning engine to continuously adjust the gamification parameters that keep our users motivated and productive.

  • We are always scaling up to handle more data with lower latencies.


Your role in our team


As a Senior Scala Engineer, you will be responsible for designing and implementing backend services on existing or new microservices, integrate with third-party APIs, and help run all of this in production. You will work tightly with our frontend developers as well as with our AI Engineers.


You will focus on



  • Playing an integral part in the design and architecture of our gamification platform

  • Developing features in a fast paced startup environment without compromising automated tests or neglecting software craftsmanship

  • Working on our distributed, real-time engine that handles millions of events per day

  • Getting our system ready to scale by one order of magnitude

  • 'Big Picture' thinking

  • Help the AI team implement distributed machine learning algorithms

  • Coaching and mentoring Juniors in the team


What you bring to the table



  • 6+ years professional experience with Scala Software Engineering

  • 4 years experience working with complex data sets in a data driven company

  • Experiences with stream processing as well as with designing and implementing REST APIs

  • Diverse technology knowledge and a sense of curiosity combined with strong problem solving skills

  • Experience with at least some of the technologies used: Akka, Akka-Stream, Akka-Http, Kafka, ElasticSearch, MongoDB

  • Experience with deploying services to Kubernetes and running software in production on Google Cloud (or AWS/Azure)

  • BS/Masters degree in Computer Science or equivalent experience

  • A Github or StackOverflow profile is always a good way to impress us; so feel free to include it in your application!

  • Being part of an early stage startup we sometimes need you to wear multiple hats just to keep things going, hence being a team player is a must have.



You will work with some of the best global talent to build a tool used by great companies like Miro, Marley Spoon, Footlocker, Soundcloud, Tripaneer or WeTransfer. You will be part of a team of diverse and passionate people with a culture that empowers great work.


What we bring to the table


We do everything to make sure you feel nourished, motivated and supported by offering:



  • Teamwork & fun perks when full remote work is required (weekly team games & drinks, morning coffee chats and more)

  • Investment into your personal development using our network of internal and external mentors

  • New laptop & tools

  • Free lunch (even while working from home)

  • Flexible working hours and unlimited holiday policy

  • Remote possible within the EU time zone

  • Workations (2019: Tuscany, 2020: Zoom 😢, 2021: ???)


Apply Now

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