The Wise Seeker is the leading HR technology company in unbiased talent evaluation. With over 15 years in the industry analyzing the needs and demands of the job market, we are capable of identifying the best talent for each company thanks to our team of professionals and our SaaS platform integrated with Artificial Intelligence. We are efficient, evaluate talent objectively without bias, and close hiring times in record time, delivering optimal results. We are looking for a Senior Software Engineer with hands-on experience in developing complex solutions for a cutting-edge ad-tech company: they process more than 2,5 million ad requests per second, replying under 100ms. Every day they generate several TBs of data that need to be processed, analyzed and aggregated, so our real-time components get smarter every day. Location: Barcelona - hybrid Functions Be an advocate of our "You build it, you run it " philosophy: you will own your code from design to production; testing, deploying and monitoring. You will learn from every step in the software development process. Develop and maintain a high-throughput low-latency platform. You have not lived until you fix an error happening 1 million times per second. Improve and optimize real-time components: every millisecond counts. Participate in code reviews, contribute to technical and architectural decisions, collaborate in a fast-paced environment where every opinion counts. The Company tech stack is 100% based on AWS, running thousands of instances and containers in 7 different regions. Technologies: Java, NodeJS, Python, Redis, AWS, Nginx, HAProxy, Apache Druid, MySQL, Memcache, Netflix Hollow, and much more :) Requirements Software development experience in one or more programming languages such as Java, NodeJS, Python, and HTML. Experience with Key-Value stores and in-memory databases (e.g. Redis, Memcached). Experience with testing tools and modern CI/CD frameworks. Knowledge in Linux, Git, Docker & Docker-Compose and AWS Cloud. Availability to come to the office in person at least 3 times a week. HIGH level of English. Desired Skills Software development experience in Java / Spring Boot. Design and implementation of low-latency, high-throughput platforms. Benefits Have a real impact on one of the hottest ad-tech in Barcelona and Europe. Be part of an agile team with a strong focus on innovation and technology, to continue improving your knowledge in the field. Work in a multicultural, young & talented environment with peeps from more than 26 different nationalities. Ticket restaurant monthly allowance. Flexible working hours. Daily fresh fruits & snacks. DIR gym membership. LinkedIn learning. TGIF's monthly activities, team-building events, and work anniversary celebrations LI-SB1 LI-HYBRID