Backend Developer – AdTech

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🔥 27 minutes ago

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Spalah

WebsiteLinkedInAll Job Openings

51 - 200 employees

Spalah isn't just a venture builder – we're growth architects for ambitious Ukrainian tech companies. We don't just help tech companies grow. We believe in their dreams and work with them to make them a reality.

📋 Description

• build and maintain scalable Node.js services (ES6+); • improve application performance through profiling, optimization, and best practices; • enhance, refactor, and modernize existing codebases; • design efficient data models and work with SQL/NoSQL databases, including query optimization and caching; • write and maintain unit and integration tests, and contribute to high-quality code through code reviews; • troubleshoot and resolve production issues in Linux environments, ensuring system stability and reliability.

🎯 Requirements

• hands-on experience with RTB / DSP / SSP / ad serving pipelines • 3–5+ years of backend development experience with Node.js, Go, or Python • strong understanding of asynchronous and concurrent programming • experience building high-throughput / low-latency systems • strong SQL skills (MySQL/PostgreSQL): indexing, query optimization, execution plans, transactions • hands-on experience with Redis/MongoDB and caching strategies • confident debugging and profiling skills • solid understanding of HTTP/TCP and distributed systems • strong command of Linux CLI and Git • clean code approach with focus on performance, scalability, and reliability • Bonus skills: AdTech / OpenRTB 2.x/3.x (auctions, bid req/resp, schain, ads.txt/sellers.json); ClickHouse, Aerospike, Nginx; parallel/stream data processing; experience with high-load/distributed systems; Kafka or RabbitMQ

🏖️ Benefits

• 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