Java Data Developer (Digital Marketing sphere)

Company Background Our client is a global technology company transforming the way brands and agencies make marketing decisions. Its platform enables marketers to plan and activate cross-channel, programmatic media campaigns using real-time research, proprietary audience data, advanced analytics, and more than 150 integrated partners including Facebook, Instagram, Pinterest, Snapchat, and Twitter. The company operates across North America, Europe, the Middle East, Asia, and Australia. Project Description The project focuses on a core data platform that processes large volumes of user and device data and provides it to analytics, advertising, and real-time systems. The team is modernizing the existing batch-processing solution by building a new streaming-based architecture designed for faster, more scalable, and reliable data processing. Technologies Java Kafka SQL (OracleDB, Postgres) NoSQL (Redis) Hadoop, MapReduce, Spark What You'll Do Own the end-to-end development lifecycle, from solution design and implementation to production deployment and support; Design and implement scalable big data solutions using Java, contributing to the platform’s infrastructure and architecture; Lead complex technical initiatives that directly impact the company’s core business; Mentor other developers and support them in solving complex technical challenges; Research and evaluate core technologies, external APIs, and third-party service integrations; Collaborate with Product, Engineering, data providers, and other stakeholders to deliver reliable solutions; Job Requirements 5+ years of commercial software development experience with Java; Strong knowledge of algorithms and data structures; Hands-on experience with Kafka, streaming systems, and microservices; Production experience with big data technologies; Experience with SQL databases; Experience designing, developing, and scaling high-load systems; Ability and willingness to investigate and work with an existing legacy codebase; Strong analytical and troubleshooting skills, with the ability to investigate production issues and understand both technical components and related business processes; Proactive and reliable approach to solving problems, proposing improvements, and introducing new technical solutions; Strong communication and collaboration skills, with a team-oriented and ego-free mindset; English level: B1 or higher, with the ability to communicate clearly in meetings; Willingness to participate in an off-hours PagerDuty rotation; Nice To Have Experience with Apache Spark, Hadoop, or MapReduce; Experience with Kubernetes; Familiarity with GitLab, Grafana, InfluxDB, Apache Airflow, Redis, or Scala; What Do We Offer The global benefits package includes: Technical and non-technical training for professional and personal growth; Internal conferences and meetups to learn from industry experts; Support and mentorship from an experienced employee to help you professional grow and development; Health insurance; Sports activities to promote a healthy lifestyle; Flexible work options, including remote and hybrid opportunities; Referral program for bringing in new talent; Work anniversary program and additional vacation days.