About the company
Zeely AI is an AI-powered platform that helps small businesses create viral UGC videos, advertising banners, and high-performing campaigns across Meta and TikTok, making it easier for entrepreneurs to grow and scale their businesses.
Responsibilities
- Lead the Backend Department, driving team growth, planning, estimations, code reviews, mentoring, and engineers' performance management.
- Define the architectural vision and ensure the reliability, scalability, and performance of the backend platform.
- Develop and evolve our AI orchestration layer across multiple models and providers, optimizing generation quality, latency, and cost efficiency.
- Own the evolution of the AI Gateway — the core platform component powering text, image, voice, avatar, and video generation.
- Scale infrastructure and backend services to support product growth and increasing workloads.
- Maintain high engineering standards in code quality, security, observability, and operational excellence.
- Deliver strategic AI initiatives, including our proprietary RAG pipeline, MCP integrations, and AI agent capabilities.
- Collaborate closely with Frontend, Mobile, QA, AI Engineering, and DevOps teams to achieve business goals.
- Partner with the Principal Engineer on infrastructure capacity planning and cost optimization.
Requirements
- 7+ years of commercial experience with Node.js.
- 3+ years of experience in a Lead, Team Lead, or Engineering Manager role with direct people management responsibilities.
- 3+ years of hands-on experience with NestJS.
- Proven experience designing and evolving microservice architectures in production environments.
- Deep expertise in PostgreSQL and Redis.
- Experience working with ORMs such as Prisma and Drizzle.
- Hands-on experience with AWS services, including EKS, RDS, SQS, S3, CloudWatch, and OpenSearch.
- Strong Docker expertise.
- Experience designing reliable, scalable, and observable distributed systems.
- Solid understanding of on-call processes and incident management practices.
- Upper-Intermediate English level or higher.
Nice to have:
- Active AWS Architect or Developer certification.
- Experience with Terraform.
- Experience building high-load systems and optimizing cost/latency trade-offs.
- Payment systems integration experience.
- Backend development experience for mobile applications (iOS/Android) and web products.
- Experience with GCP and Cloudflare.
- Experience hiring engineers and building processes in fast-scaling organizations.
AI expertise we value:
- Commercial experience integrating AI APIs (OpenAI, Anthropic, Google, and others).
- Understanding of multi-model orchestration, including routing, fallback strategies, and cost/latency trade-offs.
- Experience with AI-assisted development and code review tools (Claude Code, GitHub Copilot, etc.).
- Understanding of RAG, embeddings, MCP, and AI agents (hands-on experience is a strong plus).
Conditions
- Work with cutting-edge technologies and contribute to building AI-powered tools.
- Join a strong A-level team that motivates you to grow and achieve more.
- Remote-first approach: work from anywhere, with the option to visit our offices in Warsaw and Kyiv.
- Paid day offs and sick leaves — we care about your work-life balance.
- Regular performance reviews to ensure your growth is transparent and rewarded.
- Financial support — consultations for private entrepreneurs from our dedicated finance team.