Position: Data Engineer Salary ranges: up to 32 000 PLN, B2B Location: hybrid- Warsaw Join our client — an innovative EdTech company revolutionizing the way students learn math! Their interactive platform empowers learners to strengthen their problem-solving skills through hands-on exercises and step-by-step reasoning. Teachers can easily assign tasks, track progress in real time, and give instant, meaningful feedback.The platform focuses on nurturing mathematical thinking, not just correct answers — helping students truly understand the why behind every solution.We’re now looking for a talented Data Engineer to join this mission and help shape the future of math education!Responsibilities: Set up and configure Amazon Kinesis Data Streams / Firehoses Design and implement Apache Flink jobs for real-time data processing Optimize performance, scaling, and fault tolerance of streaming pipelines Integrate with downstream AWS services Implement monitoring, logging, and alerting (CloudWatch / Prometheus / Grafana) Provide documentation Requirements: Proven experience with Apache Flink in production (stateful stream processing, checkpoints, event time, windowing). Strong background in AWS Kinesis (Data Streams, Firehose, Kinesis Analytics) Proficiency in Java for Flink job development. Hands-on experience with AWS cloud infrastructure. A proactive attitude, with the ability to thrive in a fast-paced, collaborative and growing startup environment Confident English – you can easily communicate complex technical concepts The offer: Salary up to 32,000 PLN/month (+VAT) depending on seniority 26 days of leave covered by a yearly bonus Long-term incentive plan 10 days of paid sick leave Yearly team meetups with all the people in the company ✈️ Great Warsaw office – full floor just for us with snacks, drinks, and top-tier coffee ☕ Multisport Plus card Table football and chill board game nights with pizza & beer 🍕🍻 Occasional movie nights 🎬