Mid-Senior Software Engineer

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Smadex is an ad-tech company processing over 4.5 million ad requests per second with a real-time bidding system. The role is for a mid-level Software Engineer to join an 8-person core engineering team maintaining and evolving the Open-RTB auction system. Responsibilities include designing and implementing features using NodeJS and Java, writing testable code, monitoring production system stability, and collaborating in an agile environment. Requirements include a Bachelor's degree in Computer Science or related field, 2-4 years of software engineering experience, proficiency in Java or NodeJS, strong fundamentals in data structures and algorithms, Linux, Git, Docker, Docker-Compose, testing tools, CI/CD frameworks, and excellent English communication skills. The position offers a hybrid work model with 2 days remote per week, flexible hours, a competitive compensation package, and various benefits including gym allowance, meal vouchers, training opportunities, and team events. Location is Barcelona, Spain. Visa sponsorship is not provided.