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MIMindrift

Integration Developer (API Specialist) - Freelance AI Trainer(m/w/x)

Stuttgart
from USD 60 / hour
Part-timeFreelanceRemoteExperienced
AI/ML

Designing integrations between CRMs, ad platforms, and email tools for AI projects. 2-3 years of API integration experience required. Performance-based bonus programs.

Requirements

  • 2-3 years of relevant experience in API integrations, automation, backend systems, or software development
  • Bachelor's or Master’s Degree in Computer Science, Engineering, Information Technology, or related technical fields
  • Strong experience with REST APIs, webhooks, and data exchange formats (JSON or similar)
  • Proven ability to design and manage integrations across multiple SaaS tools and business systems
  • Solid background in database synchronization across platforms (Airtable, Google Sheets, Notion or similar)
  • Experience building reliable data pipelines with error handling, retries, and validation
  • Demonstrated experience building scalable, fault-tolerant integration systems across multiple services
  • Strong understanding of API rate limits, pagination, authentication, and performance optimization
  • Experience working with real-time vs. batch processing pipelines and choosing appropriate architectures
  • Experience integrating communication systems (email, messaging APIs, outreach automation)
  • Strong attention to detail and commitment to data consistency and reliability
  • Self-directed work ethic with ability to troubleshoot and optimize integration workflows independently
  • Portfolio or examples of integration systems or API-based projects
  • English proficiency: Upper-intermediate (B2) or above

Tasks

  • Collaborate with Tendem Agents on repetitive tasks
  • Provide system integration expertise
  • Ensure reliable and scalable data connectivity
  • Design integrations between core business systems
  • Evaluate integrations between CRMs, ad platforms, email tools
  • Build workflows using APIs and webhooks
  • Optimize real-time and batch data pipelines
  • Connect databases across platforms
  • Synchronize data in Airtable, Google Sheets, Notion
  • Ensure real-time data transfer and consistency
  • Troubleshoot data flow performance issues
  • Improve latency and failure handling
  • Support automated communication systems
  • Integrate messaging, outreach, and calling workflows

Work Experience

  • 2 - 3 years

Education

  • Bachelor's degreeOR
  • Master's degree

Languages

  • EnglishBusiness Fluent

Tools & Technologies

  • API integrations
  • automation
  • backend systems
  • software development
  • REST APIs
  • webhooks
  • JSON
  • SaaS tools
  • Airtable
  • Google Sheets
  • Notion
  • data pipelines
  • communication systems
  • email
  • messaging APIs
  • outreach automation

Benefits

Bonuses & Incentives

  • Performance-based bonus programs
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