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About the Role

Join King as a Senior Principal AI/ML Engineer in the Decision Automation team for Candy Crush Saga. This role involves turning fragmented AI/ML and decisioning approaches into scalable, production-grade systems that support faster experimentation, safer adaptation, and more coherent player experiences across the game. It is a hands-on senior technical leadership role focused on shaping direction through architecture, code, prototyping, design reviews, and deep technical judgment.

Responsibilities

Influence technical direction across Candy Crush Saga in AI/ML and decisioning through credibility, clarity, and delivery
Stay hands-on through meaningful production coding, technical prototyping, and implementation work on critical paths
Set a high bar for production AI/ML engineering, including reliability, observability, maintainability, and quality of execution
Mentor senior engineers and raise the standard of technical judgment, design quality, and cross-team collaboration
Lead the shared architecture for AI/ML and automated decisioning systems used across multiple components in Candy Crush Saga
Help unify fragmented approaches into reusable technical foundations that improve consistency, speed, and scalability
Partner with product and game teams to turn high-value opportunities into reusable capabilities rather than one-off solutions

Requirements

Deep experience building and shipping production AI/ML systems with meaningful business impact
Strong applied expertise in areas such as personalization and causal inference
Track record of connecting AI/ML methodology with real production guardrails, constraints and operational use
Proven ability to influence technical direction across teams through credibility, clarity, and execution
Experience defining shared patterns, technical standards, or architectural direction in complex environments
Ability to lead senior-level technical discussions with substance and precision
Excellent communication skills, with the ability to explain complex technical ideas clearly to both technical and non-technical audiences
Proven ability to influence across departments and align teams around shared technical direction
Strong mentoring capability, especially with senior engineers and technical leaders
Comfortable representing technical work in high-visibility forums, internally and externally
Able to shape product bets through technical insight and co-create reusable capabilities with cross-functional partners
Effective working across engineering, analytics, product, and platform teams
Strong judgment in translating business goals into scalable technical systems

Skills

AI/ML
Decision Automation
Personalization
Causal Inference
Production AI/ML Engineering
Reliability
Observability
Maintainability
Quality of Execution
Technical Leadership
Architecture
Prototyping
Design Reviews
Technical Judgment
Communication
Collaboration
Mentoring
Large-scale experimentation platforms
Personalization systems
Decisioning infrastructure
Game technology
Player-facing optimization
Content adaptation systems

Location

Stockholm
Barcelona
London

Work Type

Full-time

Experience Level

Senior Principal
Senior

About the Company

King is a leading interactive entertainment company for the mobile world with more than 20 years of history of delivering some of the world’s most iconic games in the mobile gaming industry, including the world-famous Candy Crush franchise, as well as other mobile titles such as Farm Heroes Saga.
King games are played by more than 200 million monthly active users.
King, part of Microsoft (NASDAQ: MSFT), has Kingsters in Stockholm, Malmö, London, Barcelona, Berlin, Dublin, San Francisco, New York, Los Angeles and Malta.