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SplitMetrics

Senior Backend Engineer – Python, AI

SplitMetrics

. Design and build backend services in Python using FastAPI .

Posted 11/6/2026full-timeRemote • Portugal, SpainSeniorWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in designing and building backend services using Python and FastAPI, with a strong focus on asynchronous job execution and integration with AI services. Proven ability to ensure data quality and system stability while collaborating effectively across teams.

Highest-signal resume keywords
Python Backend DevelopmentFastAPI FrameworkAsynchronous Task Queues (Celery, Redis, Kafka)Agentic AI IntegrationAWS Infrastructure Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
PythonFastAPIPostgreSQLS3CeleryRedisKafkaETL PipelinesLoggingMonitoring
Soft Skills
CollaborationEnthusiasm for AI
Tools & Technologies
AWSDockerKubernetesLangChainStarRocksClickHouse
Industry Keywords
MicroservicesData QualityObservabilityMCP ServersGenerative Models

Tech Stack

Tools & technologies
AWSDockerETLKafkaKubernetesMicroservicesPostgresPythonRedis

About the role

Key responsibilities & impact
  • Design and build backend services in Python using FastAPI
  • Implement asynchronous job execution and status tracking with Redis, Celery, and Kafka
  • Integrate with internal and external LLM services
  • Build and maintain external MCP servers exposing the platform to third-party AI agents and clients
  • Develop ETL pipelines
  • Ensure data quality across ingestion, transformation, and storage
  • Ensure stability, observability, and cost-efficient inference
  • Collaborate effectively across teams and functions

Requirements

What you’ll need
  • 5+ years Python backend experience
  • Strong FastAPI experience
  • Solid PostgreSQL + S3 or equivalent experience
  • Experience with async task queues such as Celery, Redis, and Kafka
  • Production experience integrating with microservices, including long-running jobs, retries, and failure handling
  • Solid hands-on experience with agentic AI, including building MCP servers, implementing agents, and working with various LLMs and generative models
  • Genuine enthusiasm for agentic AI and keeping up with field developments
  • Basic observability skills, including logging, monitoring, and alerting
  • Experience in cross-functional teams with frontend and ML
  • Experience with AWS infrastructure, Docker, and Kubernetes
  • Familiarity with LangChain or agentic workflows is a plus
  • Marketing technology background is a plus
  • Experience with StarRocks or other OLAP databases such as ClickHouse is a plus

Benefits

Comp & perks
  • Vacation and public holidays following your country's regulations
  • Additional PTOs annually for personal rejuvenation
  • Medical insurance or health care compensation
  • Paid sick leave
  • Top online/offline conferences and mobile industry events
  • Internal courses for continuous professional development
  • Micro-management-free and supportive management style
  • Semi-annual performance review sessions
  • New career opportunities through the internal mobility program
  • Corporate online events and offline team retreats
  • Collaboration between teams through shared OKRs
  • Flexible working schedule
  • Remote-first working environment
  • Coworking costs coverage program
  • Office hubs in key locations