Backend Engineer (AI Platform)

TL;DR

Backend Engineer (AI Platform): Developing new features for the User Profile service to power personalization, experimentation, and AI features for hirify.global Conversational AI. Focus on building User Profile 2.0 capabilities including historical data arrays, AI-ready attribute representations, and integration with ML feature stores.

Company

hirify.global is the world’s #1 health & fitness app worldwide on a mission to build a better future for female health.

What you will do

• Develop new features for the User Profile service, which powers personalization, experimentation, and AI features including hirify.global Conversational AI.
• Build User Profile 2.0 capabilities including historical data arrays, AI-ready attribute representations, and integration with ML feature stores.
• Design and implement data pipelines that deliver user attributes to AI/ML systems for personalized content generation and predictive models.
• Enable inner-source contributions by establishing contribution guidelines, quality gates, and architectural standards for product teams.
• Ensure compliance with healthcare regulations (HIPAA, SOC 2, GDPR) and implement privacy-first design patterns.

Requirements

• 7+ years of professional experience building distributed backend systems at scale.
• Fluency in Scala, Java, or Python, with a willingness to work primarily in Scala.
• Deep experience with AWS services, particularly DynamoDB, EKS, and serverless architectures.
• Strong understanding of observability and how to use it to drive operational excellence.
• Experience building high-throughput, low-latency APIs serving millions of users.
• Solid understanding of databases (SQL and NoSQL) and experience designing APIs that prioritize reliability and performance.

Nice to have

• Experience with ML infrastructure, feature stores, or data platforms that serve AI/ML workloads.
• Healthcare compliance framework experience (HIPAA, SOC 2, GDPR).
• Experience in the MedTech or HealthTech domain.

Culture & Benefits

• Competitive salary and annual reviews.
• Paid holiday, sick leave, and female health leave.
• Flexible office + home working, up to 2 months a year working abroad.
• 5-week fully paid sabbatical at 5-year hirify.globalversary.
• hirify.global Premium for friends & family, plus more health, pension, and wellbeing perks.