Lead Backend Engineer (Java/Kotlin) (m/f/d)

Java

Lead Backend Engineer (Java/Kotlin) (m/f/d)

Java
Saarbrücker Str. 36, Berlin

Adsquare GmbH

Full-time
B2B
Senior
Remote

Job description

Your Mission

As a Lead Backend Engineer at Adsquare, you will individually contribute to our products in a cross-functional squad, while leading and mentoring a small team of backend engineers.


Your Profile

  • You like working with people and have experience on a leadership position.

  • You bring excellent communication skills and the willingness to actively mentor your team. 

  • You have significant experience with Java or Kotlin.

  • Familiarity with Scala, Python and data pipelines is a big plus.

  • You have significant experience in building rest-full services using Spring Boot.

  • You have significant experience building cloud native solutions in AWS.

  • You have a proven track record of delivering backend heavy software projects from prototype to value generating product.


What you will do

  • Lead and mentor a team of 4-5 backend engineers (60%):

    • Build an appreciative and trustworthy connection with each of your team members, fostering their growth and well-being.

    • Respond to - and proactively come up with - technology modernization topics with high level of ownership and focus on outcomes.

    • Drive cross-squad standards (such as API design patterns, Observability, etc) ensuring technical consistency across the organization.

  • Individually contribute with your backend expertise in a cross-functional squad (40%):

    • Design and build scalable solutions based on Spring Boot ecosystem.

    • Design and build highly scalable solutions in AWS and provision them using Terraform.

    • Work closely with data engineers to help them integrate data processing pipelines into our product value chain.


Our Software Stack

Java and Kotlin, Angular, Spring (Boot, Config, Cloud), AWS (Batch, Lambda, SQS, SNS, Step functions, API Gateway, …), Terraform, MongoDB, PostgreSQL (and PostGIS), RabbitMQ, Kubernetes, GitLab, Gradle


Why us?

On top of a competitive package…

  • We are open to flexible work modelswe work on a hybrid mode and fully remotely

  • To encourage education and professional growth, we offer an individual yearly budget of 1.200€

  • Regular team events and company events organised by our People team (Trust us, they know how to throw a party!)

  • We equip you with the latest hardware and provide you with all the tools you need to thrive

Tech stack

    English

    B2

    Leadership

    master

    Java

    advanced

    Spring Boot

    advanced

    AWS

    advanced

    Kotlin

    nice to have

Office location

Published: 20.01.2026

Lead Backend Engineer (Java/Kotlin) (m/f/d)

Summary of the offer

Lead Backend Engineer (Java/Kotlin) (m/f/d)

Saarbrücker Str. 36, Berlin
Adsquare GmbH
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