Flix

Senior Java Engineer - Flix Train Operations Management System

Flix
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1 day ago
Warsaw, PolandSenior

Responsibilities

  • Develop greenfield internal tools and operational systems using Java and Spring Boot.
  • Design and build new products and deliver new versions of existing products in a distributed environment.
  • Contribute throughout the product lifecycle, including operational discovery, problem framing, architecture, implementation, testing, and delivery.
  • Develop distributed systems using relational and NoSQL databases, caching solutions, event-driven architectures, and messaging services.
  • Contribute to technical decisions, continuous integration, automation, code reviews, and technical guidance across teams.
  • Collaborate with a self-organized, cross-functional, distributed team in an Agile environment.

Requirements

  • 7+ years of professional experience with Java.
  • Strong experience developing distributed systems with Spring Boot.
  • Experience with MySQL, PostgreSQL, RDS, MongoDB, and DocumentDB.
  • Experience with Redis or ElastiCache and event-driven architectures using Kafka, SQS, SNS, or RabbitMQ.
  • Hands-on experience with AWS services such as RDS, S3, and EC2.
  • Experience with Docker, Kubernetes, GitLab CI, Terraform, and Datadog.
  • Upper-intermediate English or higher.
  • Experience working in an Agile setup.
  • Data engineering skills such as ETL and Snowflake are nice to have.
  • Experience working with distributed teams is nice to have.

Benefits

  • B2B/freelance cooperation based on a service agreement rather than an employment contract.
  • Independent-contractor working model with responsibility for delivering agreed services and submitting invoices.
  • Collaboration with a distributed, self-organized, cross-functional team in a greenfield environment.
  • Low-bureaucracy, pragmatic, collaborative team culture.

Tech Stack

Apache KafkaAWSDatadogDockerGitLab CI/CDJavaKubernetesMongoDBMySQLPostgreSQLRabbitMQRedisSnowflakeSpring BootTerraform

Categories

Flix

About Flix

1,001-5,000 employees

Flix builds a travel-tech platform and consumer apps that sell intercity bus and rail tickets under FlixBus, FlixTrain, Greyhound, and Kamil Koç. It uses an asset-light model, partnering with local operators while handling network planning, pricing, and marketing to connect travelers in 40+ countries. Founded in 2011 and headquartered in Munich, it offers a unified booking experience across Europe, the U.S., and Turkey.

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