Why work with us? * People-oriented management without bureaucracy * The friendly climate inside the company is confirmed by the frequent comeback of previous employees * Flexible working schedule * 29 paid time off (18 working days per year, plus 11 days — all national holidays) * 9 sick leave days * Full financial and legal support for private entrepreneurs * Free English classes with native speakers or with Ukrainian teachers (for your choice) * Dedicated HR
Your day-to-day in this position: * Design, build, and operate high-throughput, low-latency backend services for ad delivery and analytics * Own queue-driven workloads (Celery/Redis/DragonflyDB): throughput, retries, back-pressure, idempotency * Optimize performance end-to-end: CPU/memory, networking, asyncio/concurrency, caching, schema/indexing * Productionize on AWS (EC2/EKS/Lambda, S3, RDS, ALB/NLB, IAM, elasticsearch) * Implement robust observability: metrics, tracing, structured logs, SLOs/alerts * Collaborate with product/analytics to ship features fast; run load tests and capacity plans for peak QPS * Harden systems for resiliency, cost, and security (least-privilege IAM, secrets, threat modeling)
What makes you a great fit: * 5+ years building production backend systems in Python * Strong AWS experience running scalable, reliable services * Proven track record optimizing servers for high load/low latency * Deep hands-on with Celery (or similar queues), task orchestration, and distributed systems fundamentals * Comfortable with Bash, Linux networking, and performance debugging (perf, eBPF, flame graphs) * Solid JavaScript/Web fundamentals (HTTP, TLS, CORS, cookies, caching, CDNs) * SQL/NoSQL experience; data modeling for large-scale reads/writes * Great communication, team player, fast learner, proactive, and willing to work hard to hit goals * At least an upper-intermediate level of English
Will be a plus: * RTB/OpenRTB, VAST/VMAP, header bidding, DSP/SSP integrations * Redis/DragonflyDB tuning, Kafka/Kinesis, ClickHouse/Redshift, Airflow * Docker/K8s, GitHub Actions, ArgoCD; zero-downtime deploys & canary/blue-green * Security/compliance in ad systems (PII, consent/TCF) * Elasticsearch/Kibana experience
About the project: * Domain: AdTech * Location: Israel * Company size: up to 50 employees * Founded in: 2021
Our next steps:
✅ Intro call with a Recruiter — ✅ Intro tech interview — ✅ Technical assessment — ✅ Final client interview — ✅ Offer
Who We Are: Website: more about us and vacancies Instagram: follow MWDN’s life Facebook: follow our FB Feel free to contact us without any hesitation!
