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Backend Lead (Node.js)

ZeelyRemoteDevelopment
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Posted
9 Jun 2026
Status
Open · checked 7d ago

About this role

This remote Backend Lead position at Zeely AI involves managing the backend department and scaling infrastructure for a rapidly growing artificial intelligence advertising platform. The role suits an experienced engineering leader with extensive Node.js expertise who wants to own mission-critical generative pipelines and AI orchestration layers trusted by millions of users.

Role Overview

Zeely AI is seeking a Backend Lead to direct the technical vision and growth of the backend platform behind a leading agentic AI advertising product. In this position, the professional exercises full ownership over the AI Gateway, generative workflows, and backend services supporting more than 1.5 million users. The role bridges technical architecture with people management, guiding a talented team of engineers while collaborating closely with frontend, mobile, quality assurance, artificial intelligence, and DevOps departments.

Key Responsibilities

Direct the Backend Department by overseeing team expansion, planning, estimations, code reviews, mentorship, and performance management.
Establish the architectural vision to guarantee the reliability, performance, and scalability of the backend platform.
Build and refine the AI orchestration layer across multiple providers to optimize generation quality, speed, and cost-efficiency.
Manage the evolution of the AI Gateway, which powers text, image, voice, avatar, and video generation capabilities.
Scale backend infrastructure and microservices to accommodate fast product growth and rising workloads.
Uphold rigorous engineering benchmarks surrounding code standards, security, observability, and operational excellence.
Execute strategic artificial intelligence initiatives, including proprietary RAG pipelines, Model Context Protocol integrations, and AI agent features.
Cooperate with the Principal Engineer on infrastructure capacity planning and financial optimization.

Requirements

Seven or more years of commercial working background utilizing Node.js.
Minimum of three years working in a Lead, Team Lead, or Engineering Manager capacity with direct reports.
Three or more years of practical working background with NestJS.
Demonstrated history of designing and evolving microservices in production environments.
Advanced expertise using PostgreSQL and Redis.
Practical background employing ORMs such as Prisma and Drizzle.
Hands-on familiarity with Amazon Web Services, including EKS, RDS, SQS, S3, CloudWatch, and OpenSearch.
Strong proficiency in Docker.
Ability to design reliable, scalable, and observable distributed systems alongside a firm grasp of incident management and on-call rotations.
Upper-Intermediate or higher English language proficiency.

Nice to Have

Active Amazon Web Services Architect or Developer certification.
Background using Terraform.
Direct experience developing high-load systems and balancing cost and latency parameters.
Background integrating payment gateway systems.
Experience building backend services for web applications and mobile platforms like iOS and Android.
Familiarity with Google Cloud Platform and Cloudflare.
Prior involvement in recruiting engineers and establishing processes within rapidly scaling organizations.
Commercial background connecting artificial intelligence APIs from providers like OpenAI, Anthropic, and Google.
Knowledge of multi-model orchestration involving routing and fallback strategies.
Experience utilizing AI-assisted coding and review assistants such as Claude Code and GitHub Copilot.
Practical background or understanding regarding RAG, embeddings, MCP, and AI agents.

Skills and Tools

Node.js
NestJS
AWS (EKS, RDS, SQS, S3, CloudWatch, OpenSearch)
Docker
PostgreSQL and Redis
Prisma and Drizzle ORMs
Terraform (optional)
GCP and Cloudflare (optional)

Salary and Benefits

Remote-first working arrangement with the flexibility to work from anywhere or visit company offices located in Warsaw and Kyiv.
Provided paid days off and sick leave to support healthy work-life balance.
Periodic performance evaluations designed to keep career progression transparent and rewarded.
Financial support that includes private entrepreneur consultation sessions provided by a dedicated finance team.

About the Company

Zeely AI develops an agentic artificial intelligence platform dedicated to creating, launching, and scaling paid advertising campaigns. The product serves more than 1.5 million users in the market, supported by an A-level engineering culture that encourages continuous professional development and cutting-edge technology adoption.

How to Apply

Send a resume to the hiring team through the official Zeely AI careers page to begin the introductory call, test task, technical interview, final interview, and reference check recruitment process.

Skills and tech stack

AWSGCPDockerNode.jsRAGTerraform

Questions candidates ask

What is the primary location requirement for the Backend Lead role?

The position is remote-first, allowing the candidate to work from anywhere with optional access to company offices in Warsaw and Kyiv.

How many years of Node.js experience are required?

Candidates must have at least 7 years of commercial experience with Node.js.

What leadership background is expected for this position?

Applicants need a minimum of 3 years of experience in a Lead, Team Lead, or Engineering Manager role with direct people management responsibilities.

What specific cloud platform technologies are mentioned in the requirements?

The role requires hands-on experience with Amazon Web Services, specifically EKS, RDS, SQS, S3, CloudWatch, and OpenSearch.

What are the steps in the recruitment process?

The recruitment process consists of an Intro Call, a Test Task, a Technical Interview, a Final Interview, a Reference Check, and the Offer.

Ready to apply?

The application is on the official Zeely careers page.

Apply on company site