Senior Backend Engineer (Python) - AI

Location: Remote - Europe Time Zones; other locations: Portugal and Spain. Flexible working schedule and remote-first work environment.

Company

hirify.global is a global software company building mobile marketing products for Apple Ads automation, ASO, A/B testing, and keyword and competitor insights.

What you will do

• Design and build backend services in Python with FastAPI.
• Implement asynchronous job execution and status tracking using Redis, Celery, and Kafka.
• Integrate internal and external LLM services and build agentic AI capabilities.
• Build and maintain external MCP servers for third-party AI agents and clients.
• Develop ETL pipelines and maintain data quality across ingestion, transformation, and storage.
• Ensure service stability, observability, and cost-efficient inference.

Requirements

• 5+ years of Python backend experience.
• Strong FastAPI experience and solid PostgreSQL plus S3 or equivalent experience.
• Experience with asynchronous task queues, including Celery, Redis, and Kafka.
• Production experience integrating microservices, including long-running jobs, retries, and failure handling.
• Hands-on production experience with agentic AI, including building MCP servers, implementing agents, and working with various LLMs and other generative models.
• Basic observability skills covering logging, monitoring, and alerting.
• Experience working in cross-functional teams with frontend and ML specialists.
• Experience with AWS infrastructure, Docker, and Kubernetes.

Nice to have

• Familiarity with LangChain or agentic workflows.
• Marketing technology experience, including ad platforms or creative tools.
• Experience with StarRocks or other OLAP databases such as ClickHouse.

Culture & Benefits

• Vacation and public holidays follow each employee's country regulations, with additional annual PTO.
• Medical insurance or healthcare compensation and paid sick leave.
• Conference participation, mobile industry events, and internal professional development courses.
• Supportive, non-micromanagement management style, semi-annual performance reviews, and internal mobility opportunities.
• Flexible schedule, coworking cost coverage, online events, and offline team retreats.
• Remote-first work with office hubs in key locations and collaboration across 20+ countries.