Senior Scala Engineer

Build a high-scale, in-house A/B testing and feature-flagging platform for global streaming, entertainment, and digital products reaching hundreds of millions of users. The platform serves millions of concurrent requests with single-digit millisecond response times across the client’s portfolio.

Responsibilities

• Lead implementation, design, testing, and deployment of services in a multi-region cloud environment.
• Ensure feature quality and high engineering standards through automated testing and code reviews.
• Partner with the Lead Engineer, Product, and Project Management to influence the team roadmap and architecture.
• Support Agile practices and contribute to ceremonies such as stand-ups and planning.
• Mentor less experienced engineers on technical development and career growth.
• Contribute to an inclusive, collaborative culture focused on learning and excellence.

Requirements

• Strong understanding of high-quality coding, testing, and development practices.
• Experience with a JVM language such as Java, Scala, or Kotlin. The team primarily uses Scala, functional-programming principles, Cats Effect, and ZIO; willingness to learn Scala is welcome.
• Familiarity with designing, building, and operating distributed systems with multi-level failover and fallback strategies.
• Familiarity with at least one major cloud provider: AWS, GCP, or Azure.
• Familiarity with Terraform or other infrastructure-as-code tooling.
• Strong communication skills, including the ability to understand, frame, and simplify technical and business requirements.
• Experience mentoring and coaching engineers on technical and soft skills.

Nice to Have

• Experience building microservices or web services, including REST and GraphQL.
• Experience or interest in functional programming, particularly Scala stacks such as Cats Effect and ZIO.
• Experience with relational and NoSQL databases, especially PostgreSQL, Aurora, and DynamoDB, including data modelling and query-performance optimisation.
• Experience with Kinesis, Kafka, or other streaming-data technologies.
• Familiarity with data warehouse, pipeline, and analytics platforms such as Databricks or Snowflake.
• Background in high-traffic, low-latency systems serving millions of concurrent users.
• Experience in entertainment, media, or streaming.

Benefits and Working Conditions

• Hybrid work model and the opportunity to work remotely within Poland.
• Opportunity to work abroad for up to 60 days annually.
• Business-driven relocation opportunities.
• Career development, thought leadership, mentoring, soft-skills, and well-being programs.
• Certification opportunities in Anthropic, Gemini, GCP, Azure, and AWS, plus English classes.
• Stable pay and participation in the Employee Stock Purchase Plan with a 15% discount.
• Benefits package including health insurance, Multisport, and shopping vouchers.
• Referral bonuses up to $2,000.
• Office entertainment and relaxation zones, table tennis, football, free snacks, coffee, and corporate, social, and well-being events.
• Listed benefits are available to employees only.
• Contractor cooperation is available; B2B agreement terms are agreed individually.
• Only selected candidates will be contacted.