Position: Data EngineerSalary ranges: up to 32 000 PLN, B2BLocation: hybrid- WarsawJoin 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 / FirehosesDesign and implement Apache Flink jobs for real-time data processingOptimize performance, scaling, and fault tolerance of streaming pipelinesIntegrate with downstream AWS servicesImplement monitoring, logging, and alerting (CloudWatch / Prometheus / Grafana)Provide documentationRequirements: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 environmentConfident English – you can easily communicate complex technical conceptsThe offer:Salary up to 32,000 PLN/month (+VAT) depending on seniority26 days of leave covered by a yearly bonusLong-term incentive plan10 days of paid sick leaveYearly 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 cardTable football and chill board game nights with pizza & beer 🍕🍻Occasional movie nights 🎬