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Offer summary

(Summary generated by AI based on the full job description)

The project focuses on backend development using Scala, Apache Kafka, ElasticSearch, Kubernetes and cloud environments Azure and GCP. The main responsibility is designing architecture and optimizing processing of large data sets. Required skills include programming in Scala or JVM languages, Rust and tools like Akka, ZIO, Cats. Tasks include translating requirements, data analysis and software development with focus on performance. Benefits include private medical care, sports support, flexible working hours.

newyou can start ASAP

Backend Engineer

Company: Synerise S.A.

from: 2 July 2026
to: 1 August 2026
14 000 - 20 000 złnet (+ VAT)/ mth.B2B contract (full-time)
Offer parameters
level:mid
working mode:remote • hybrid
Kraków, Krowodrza
Kraków, KrowodrzaWładysława Reymonta 20View on map

Requirements

Expected technologies

Scala
Rust
Kafka
SQL

Optional technologies

Claude Code
Microsoft Azure
Google Cloud Platform
Java
Python

Operating system

Windows
macOS

Our requirements

  • Programming skills in Scala or other JVM language.
  • Programming skills in Rust or willingness to learn.
  • Solid understanding of Kafka and Kubernetes.
  • Experience with (at least one): Akka / ZIO / Cats.
  • Experience with SQL and NoSQL databases.
  • Hands-on experience using AI coding (e.g., Claude Code, Cursor, GitHub Copilot) as part of daily software engineering work.
  • Capacity to plan and scale systems to keep up with incredible growth.
  • Excellent troubleshooting and debugging skills.
  • A passion for building tools and automating everything.
  • Strong analytical skills.

Optional

  • Solid understanding of JVM internals (GC, profiling, heap and thread dumps).
  • Experience designing and operating microservices architectures.
  • Hands-on experience working in cloud environments (Azure and/or GCP), preferably with AKS.
  • Working knowledge of Java or Python.
  • Knowledge of ElasticSearch/Opensearch.
  • Basic knowledge of AI/ML concepts.

Your responsibilities

  • Develop architecture and design patterns to process and store high volume data sets.
  • Develop software with a core focus around optimisation and performance.
  • Translate complex functional and technical requirements into detailed design.
  • Perform analysis of vast data stores and uncover insights.

About the project

Having such great solutions, we are looking for a highly motivated Backend Software Engineer to join our brave and brilliant Synerise Team. See if you fit our diverse and dynamic environment, where we constantly evolve together with the growth of our clients.
About the team:
Our Backend Team works primarily with Scala, Apache Kafka, ElasticSearch, Clickhouse, Kubernetes, and cloud environments (Azure and GCP). Observability is a first-class concern: distributed tracing (OpenTelemetry, Jaeger), structured logging, and rich metrics are embedded into how we design and operate services.

This is how we organize our work

This is how we work

in house
Company

What we offer

  • Work on a production-grade, large-scale system used by enterprise customers worldwide.
  • Real technical challenges around performance, data volume, and distributed systems.
  • Opportunities for continuous technical growth and deeper ownership over system design.
  • Support from experienced engineers and a strong engineering culture.
  • Influence on architectural and technical decisions within your team.

Benefits

  • sharing the costs of sports activities
  • private medical care
  • remote work opportunities
  • flexible working time

Synerise S.A.

Synerise is not just another tech company. It is a space where our brilliant team consequently brings technology change to the business world and instead of following known paths, we are creating a new one – a next-generation, fully personalized and AI-driven customer experience.
We successfully deliver an all-in-one tool (more info: Synerise Explainer Video (youtube.com): an ever-evolving data platform enhanced by AI to generate outstanding ROI in more than 30 markets for industry leaders in Retail, Banking, eCommerce, Automotive, Insurance, and Telco, processing more than 150 billion transactions annually.
However, we don't limit ourselves solely to this solution. We're building the Base Model platform (more info BaseModel.AI | Apply science to behavioral data. Automatically.) - a foundation model for behavioral data embedded within a novel platform for enterprise Data Science teams, that is another step on our path to create innovation in AI and demonstrate its potential for the business world.
Backend Engineer
14k–20k zł / mth. (B2B)
I apply to:
Synerise S.A.
Kraków, Krowodrza
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