Sanoma Learning
Senior Java Developer
Sanoma LearningPoland9 days ago
ContractRemote FriendlyEngineering, Information Technology
  • Important:

This position is only for candidates legally residing in Poland and operating under a registered sole proprietorship (JDG).

As part of onboarding, we kindly invite new joiners to our Warsaw office on the first day for a short introduction and identity verification.

Please note that applications from outside Poland cannot be considered.

Location: Warsaw, Poland

Employment type: B2B contract

Work model: 100% remote

Business travel: Occasional, up to 2 times per year (e.g., for team onboarding or workshops in Warsaw).

About Us

Sanoma Learning is the leading European learning company, serving over 20 million students in 11 countries. We offer printed and digital learning materials as well as digital learning and teaching platforms for primary, secondary, and vocational education. The development of our methodologies is based on deep teacher and student insight and really understanding their needs. By combining our educational technologies and pedagogical expertise, we create learning products and services with the highest learning impact. In our Technology organization, you will join the largest cross-cultural community of Sanoma Learning and contribute to the digital transformation and future of education in Europe.

Project Description

We are developing externally facing learning analytics products integrated into existing curriculum learning applications. As part of this initiative, we are building a cutting-edge backend service that seamlessly connects Databricks Lakebase (Postgres) with frontend web components. This service will enable advanced, data-driven learning analytics features for a new product scheduled for launch in Q3 2026. We are looking for a skilled Backend Developer to lead the development and integration efforts in close collaboration with our data engineering and frontend teams.

Role Responsibilities

  • Design and implement a robust backend service using Java or Kotlin (Spring Boot)
  • Develop RESTful APIs and integrate with Databricks via JDBC/ODBC connectors
  • Ensure secure data access using OAuth2 and manage PostgreSQL databases with ORMs
  • Collaborate with frontend developers to expose data endpoints and support UI features
  • Deploy and maintain services on AWS with attention to scalability and reliability
  • Integrate messaging systems like Kafka for data streaming and event handling
  • Participate in architectural decisions and microservice design
  • Support DevOps practices including containerization, CI/CD pipelines, and monitoring
  • Transition to a maintenance role post-launch (≤50% workload)

Ideal Candidate

  • Proven experience building scalable backend services
  • Strong understanding of data pipelines and cloud-native development
  • Comfortable working independently and collaboratively in cross-functional teams

Must-have Requirements

  • Languages & Frameworks: Java or Kotlin (Spring Boot)
  • API & Connectivity: REST API, JDBC/ODBC (Databricks connectors), Streaming API
  • Cloud & Security: AWS, OAuth2
  • Databases: PostgreSQL
  • Messaging: Kafka

Nice-to-have Requirements

  • Bonus Skills: Databricks SQL, PySpark
  • DevOps (Nice to Have): Docker, Kubernetes, CI/CD, monitoring/logging
  • Architecture: Microservices

What We Offer

B2B contract for an indefinite period;

Work-life balance and great atmosphere;

Opportunities for professional development through interesting tasks.

As an employer, Sanoma offers a working environment where you are able and encouraged to show your best self. The working environment is result-oriented as well as flexible with a focus on collaboration. We offer you a key position with interesting and challenging tasks and excellent opportunities for professional growth. You will be part of a highly professional and experienced international team in an open and informal setting, where initiative is expected and rewarded.

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