Node.js Developer (Prebid.js)

Spalah is a Ukrainian venture builder that connects ambitious tech businesses with the international stage, fostering an ecosystem for rapid growth. We unite visionary founders and diverse talent to create companies that drive global progress. Our portfolio features over 10 projects spanning Adtech, Martech, Mobile apps, Publishing, AI, and more.

What You Will Be Working On:

• Build and maintain backend services using Node.js, focusing on scalability, performance, and reliability;
• Work with various databases such as MongoDB, Redis, MySQL, and ClickHouse, optimizing data access and storage strategies;
• Implement and configure Prebid.js for header bidding; develop and maintain custom wrappers; integrate with ad servers and demand partners to ensure seamless, high-performance delivery;
• Continuously optimize latency, auction parameters, and bidding strategies to improve ad yield and maximize revenue potential; monitor and analyze performance metrics to identify opportunities and troubleshoot issues;
• Work closely with ad operations and development teams to apply best practices; maintain clean, well-documented, and efficient code; contribute to code reviews and team-wide knowledge sharing.

Your Background:

• Strong experience working with Node.js in real-world projects. Comfortable using databases like MongoDB, Redis, MySQL, and ClickHouse;
• Good understanding of APIs, distributed systems, and asynchronous code;
• Experienced with Git and team-based development;
• Skilled at debugging, improving performance, and building systems that scale well;
• Experience with Prebid.js, header bidding, or programmatic ads will be a plus;
• Familiarity with ad platforms like Google Ad Manager, Xandr, or similar is also a bonus.

What we offer you:

• flexibility and freedom: choose fully remote, hybrid, or office-based work yourself;
• strong team: work alongside some of the industry’s top talent;
• unlimited growth: grow in multiple directions, get freedom to launch your own product;
• career development: take courses, attend top-notch conferences, explore digital library for nonstop growth;
• health support: get medical insurance, paid vacation and sick leaves, and access to a corporate psychologist;
• fun and culture: enjoy off site parties, team-buildings, sport events, and corporate gifts.

Thanks for your time.
Let’s bring things to the next level?