We are looking for a Senior Scala / Data Engineer on behalf of our client — a company operating in a highly data-intensive, distributed systems environment. This is a hands-on role for an engineer who doesn't just build services, but owns large-scale data processing systems end-to-end.

If you enjoy working on complex data flows, optimizing performance at scale, and designing resilient distributed architectures — this role is for you.

You will play a key role in shaping how data powers products, working on systems where efficiency, scalability, and fault tolerance are critical.

What you'll do

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  Design, build, and optimize distributed data processing systems using Scala
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  Develop high-throughput, low-latency data pipelines
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  Work with big data frameworks such as Spark and distributed architectures
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  Build and maintain scalable backend services for data-intensive workloads
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  Optimize the performance of data jobs and the underlying infrastructure
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  Ensure fault tolerance, resilience, and reliability of distributed systems
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  Implement monitoring, logging, and observability for pipelines
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  Collaborate with engineering teams on scalable system design
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  Contribute across backend and data engineering domains
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  Maintain high standards of code quality, performance, and maintainability

What we're looking for

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  Strong production experience with Scala
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  Proven background as a Senior Data Engineer or Backend Engineer in data-heavy environments
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  Solid understanding of distributed systems and parallel processing
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  Hands-on experience with Spark, Kafka, or similar technologies
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  Strong knowledge of the JVM ecosystem and performance tuning
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  Experience building high-load, scalable systems
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  Strong system design and architectural thinking
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  Ability to work independently and take ownership
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  Strong problem-solving skills in complex systems
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  English level: B2+ (C1 preferred)
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  Availability to work in EU time zone

Nice to have

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  Experience with functional programming paradigms
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  Cloud experience (AWS / GCP)
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  Experience with stream processing (Flink, Akka Streams)
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  Background in low-latency / real-time systems
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  Experience in niche or technically complex domains

What's in it for you

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  Opportunity to work with a top-rated employer (DOU 2025)
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  Challenging projects that drive real technical growth
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  Collaborative, proactive, and supportive team
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  Comfortable and modern office in Kyiv (with power backup)
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  Minimal bureaucracy and a regular feedback culture
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  Team events, both online and offline