Backend Engineer – Integrations, Automation

Teamcubate

. Design, build, and ship backend services and automated workflows from initial requirements through production .

Posted 10/7/2026full-timeRemote • SerbiaMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building and deploying backend services, integrating third-party APIs, and developing LLM applications. Proficient in using Docker and cloud platforms while ensuring reliability and performance through automated testing and debugging.

Highest-signal resume keywords

TypeScriptNode.jsREST API IntegrationDockerLLM Application Development

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Backend Software DevelopmentAPI AuthenticationError HandlingMCP Tool IntegrationAutomated TestingDebuggingCode ReviewProduction DeploymentWorkflow OrchestrationModel Evaluation

Soft Skills

Clear CommunicationTechnical Decision-MakingOwnership

Tools & Technologies

AWSGCPAzureClaude Agent SDKOpenAI APIsLangChainVercel AI SDKECSFargateDynamoDB

Certifications & Qualifications

Degree in Computer Science

Industry Keywords

Model-Driven ApplicationsIntegration ServicesProduction SoftwareClient EngineersStructured Data

Tech Stack

Tools & technologies

AWSAzureCloudDockerDynamoDBGoogle Cloud PlatformJavaScriptNode.jsPythonTypeScript

About the role

Key responsibilities & impact

Design, build, and ship backend services and automated workflows from initial requirements through production
Build reusable tools and integration services with clear schemas, validation, and interfaces
Integrate third-party APIs and internal services, handling authentication, retries, rate limits, and idempotency
Implement workflow orchestration involving state, execution limits, permissions, error handling, and human approval steps
Build and maintain MCP servers and other tool interfaces for model-driven applications
Develop and refine LLM instructions and tool descriptions
Configure model selection, reasoning settings, tool permissions, and execution limits for workflows
Debug production failures including incorrect tool selection, invalid arguments, missing actions, and incomplete execution
Package and deploy services with Docker to cloud runtimes, with logging and instrumentation
Add features and integrations to live services while protecting existing behavior through testing and regression checks
Contribute to architecture and reliability improvements across system boundaries
Document services and explain their behavior to internal teams and client engineers when needed

Requirements

What you’ll need

At least 3 years building production backend software
Strong TypeScript and Node.js skills
Practical experience integrating REST APIs and third-party systems, including authentication, structured data, and failure handling
Comfort with Docker and at least one cloud platform: AWS, GCP, or Azure
Hands-on experience building LLM applications that call tools, using an established SDK or framework or a custom execution loop
Practical experience with MCP or equivalent tool-integration patterns
Established habits around Git, automated testing, code review, and debugging production software
Ability to make technical decisions independently and take ownership of outcomes
Ability to communicate clearly in written English
A degree in Computer Science or equivalent practical experience
Preferred: production experience with Claude Agent SDK, Anthropic or OpenAI APIs, LangChain/LangGraph, or Vercel AI SDK
Preferred: experience writing MCP servers and evaluating model output with test sets, regression checks, or evaluation frameworks
Preferred: hands-on AWS experience with ECS/Fargate, Lambda, IAM, or DynamoDB
Preferred: experience integrating Gladly, Zendesk, Salesforce, or Amazon Connect, or using Python for data work

Benefits

Comp & perks

Fully remote work and remote-first culture
Flexible arrangements supporting work-life balance
Autonomy and influence over architecture, tooling, and service maintenance
International, collaborative environment
Opportunity to deepen experience in workflow orchestration, tool integration, and model-driven application reliability
Opportunity to work with TypeScript, Node.js, cloud infrastructure, and AI-powered workflows
Opportunity to shape a growing software platform
Single, long-term projects
Friendly HR support
Professional and personal growth opportunities
Inclusive, respectful, creative, and collaborative culture
Shared workspace in Serbia with free drinks and snacks