Senior Backend Engineer (AI focus)

Deel2 days ago

Location

Spain

Workplace

Remote

Type

Full Time

Salary

EUR 75,000 – 120,000

Level

Senior

Role

Backend Engineer

Posted

Mar 27, 2026

Full TimeRemoteSenior

The role

Summary

Deel is seeking a Senior Backend Engineer with a focus on AI integration to build innovative backend services that power global payroll workflows. The ideal candidate will leverage advanced technical skills to develop AI-powered tools that transform how global teams operate, working within a rapidly growing SaaS platform that supports workers across 150+ countries.

What you'll do

AI Backend Development: Build backend services that integrate AI capabilities into payroll workflows

System Integration: Collaborate with ML engineers to create real-world AI-powered tools

Data Pipeline Management: Design and maintain ETL pipelines for handling complex, unstructured data

API Development: Create robust and scalable API interfaces for AI service interactions

Performance Optimization: Ensure high-performance and reliable backend systems for global workforce management

What we look for

Technical

Backend Engineering8+ years of experience in backend or full-stack engineering

AI IntegrationProven experience integrating AI APIs into production systems

Data HandlingComfort working with unstructured and complex data environments

Education

Computer ScienceBachelor's degree in Computer Science, Software Engineering, or related technical field preferred

Experience

Enterprise SoftwareExtensive experience in developing scalable backend services

AI Product DevelopmentDemonstrable experience in creating AI-powered software solutions

Skills

Required skills

JavaScriptCore backend development language

Node.jsPrimary backend runtime environment

PostgreSQLRelational database management

API IntegrationStrong skills in connecting and managing complex API interactions

ETL PipelinesExperience with data extraction, transformation, and loading processes

Nice to have

PythonScripting language for AI workflows

AI API IntegrationExperience with OpenAI, Gemini, or Anthropic APIs

Chatbot DevelopmentBuilding conversational AI interfaces

Prompt EngineeringAdvanced AI interaction design skills

Document ParsingAbility to process various file formats like CSV, PDF, and Excel

Compensation & benefits

Salary

EUR 75,000 – 120,000 (annual)

Stock options

Available

Benefits

Stock Options

Equity grant opportunities based on role and location

Remote Work

Fully remote work arrangement with optional WeWork access

Global Flexibility

Benefits tailored to individual's country and employment status

Diverse Work Environment

Inclusive workplace spanning 100+ countries

Interview process

1
Initial Screening — Review of application and initial candidate evaluation
2
Technical Assessment — Role-related technical skills and AI integration capabilities test
3
Interview Rounds — Multiple interview stages including technical and cultural fit assessments
4
Final Decision — Comprehensive evaluation with human oversight of AI-assisted selection process