VeliTech
Senior Scala/Java Engineer
VeliTechUkraine1 day ago
Full-timeRemote FriendlyEngineering, Information Technology
We’re a product powerhouse building a full-stack ecosystem for iGaming businesses. 40M+ players. 250 brilliant minds. One bet: our technology is so rock-solid that we stake our own business on it.

From our hubs in Ukraine, Georgia, the UK, and the Philippines, we blend real-world experience, a battle-tested Tech Radar, all within an open-door culture.

Turnkey isn’t just our biggest team — it’s the engine room of everything we build.

It’s the tech our partners bet their business on: no patchwork, no plug-ins. Just one battle-tested ecosystem designed to launch, grow, and lead in the most dynamic markets.

Turnkey unites VeliHorizon (our core platform), VeliX (the experience layer), and VeliPayments — the trio powers every player's journey and operator’s next big leap.

We invite a Senior Scala/Java Engineer to join the VeliHorizon (Promo) team.

VeliHorizon — our battle-tested platform built on real gaming floors. High-performance, microservices at its core, API-first by design — it keeps operations smooth, data sharp, and transactions flying.

Every click, spin, and payout runs through Horizon — proven in the toughest conditions, powering thousands of moments a second. Built by cross-functional teams who own every detail — from first idea to live performance.

In this role, you will:

  • Drive design, implement, extend, test, deliver, and maintain domain-specific business features in production
  • Optimize and refactor the existing codebase and data models
  • Participate in SRE activities, including monitoring, troubleshooting, production releases and housekeeping
  • Respond to and investigate complex problems within the team's area of responsibility and cross-team areas by retrieving and analyzing heap dumps, logs, SQL queries, reports, and charts
  • Improve internal common libraries and frameworks
  • Collaborate with team members and external stakeholders to address technical and business challenges, drive the product's feature development and actively seek feedback
  • Skills and experience you will need:
  • Proficiency in Java with practical experience using Quarkus(Rest, Mutiny, Reactive PG SQL), or similar Spring Framework, Vert.x
  • Scala development experience required. Akka or ZIO will be a huge advantage
  • Strong understanding of functional programming principles and best practices
  • Practical experience of JVM application garbage collection, memory management, understanding and troubleshooting
  • Solid experience with Kafka (event-driven architecture, message delivery semantics, stream processing)
  • Strong command of relational databases, especially PostgreSQL
  • Experience designing and maintaining RESTful HTTP APIs for client communication
  • Hands-on experience with gRPC for efficient inter-service communication
  • Understanding and application of Clean Architecture principles in designing modular and maintainable systems

System Architecture and Infrastructure:

  • Experience working in distributed microservice environments with domain-driven service decomposition
  • Understanding of asynchronous messaging patterns and event-driven communication, especially over Kafka
  • Good understanding of CAP theorem, message delivery strategies (at-most-once, at-least-once, exactly-once), and fault tolerance in distributed systems
  • Hands-on experience deploying and managing applications in Kubernetes, using containerd or other container runtimes
  • Software Design and Engineering Best Practices:
  • Deep understanding of software design principles: SOLID, GRASP, and other key OOP/FP paradigms
  • Ability to write clean, maintainable, and well-tested code
  • Experience with concurrent and parallel programming, thread management, and async task orchestration
  • Experience with near-real-time stream processing (millions of records per second/minute). Focus on throughput and latency optimization

Note: This is not a “big data” (Hadoop/Spark) batch processing role, but rather stream-oriented, high-load system development.

Will be a plus:

  • A relevant university degree in Computer Science, Software Engineering, or a related field is preferred
  • Experience with Akka, ZIO, and the Slick library
  • Familiarity with Elasticsearch and its integration in search-heavy services
  • Experience with Grafana, Prometheus (ViktoriaMetrics), ELK, or other monitoring solutions.
  • Familiarity with CI/CD workflows and observability tools.Familiarity with analytical databases, especially ClickHouse

Hiring process: Intro Call with TA Specialist → Technical Interview (with Live coding session)→ Final interview → Offer

Benefits:

Level up daily. Real mentorship, a clear career path, and support to lead your product.

Battle-tested tech stack. Work with what we bet on: microservices, serverless, SRE strength.

Health comes first. Insurance and 10 days' sick leave — because your health is a priority.

Work your way. Remote, hybrid, Kyiv office — find your rhythm.

Time off that matters. 20 days paid vacation, public holidays — to recharge your way.

Build your brand. Share your story, grow your voice — inside and out.

Culture with a pulse. Team offsites, community events, and the energy of people who care.

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