Senior Software Engineer – Supercell ID Client SDK

About the role

Supercell is looking for a Senior Software Engineer to own and evolve the Supercell ID client SDK that powers player accounts across all its games. You will work closely with game teams to deliver seamless, secure, and user‑friendly account experiences on iOS, Android and other platforms.

Key responsibilities

• Architect, build and ship the Supercell ID client SDK that runs inside every Supercell game.
• Design and implement player‑facing account flows, balancing usability, safety and platform constraints.
• Lead implementation projects, collaborating with product managers, designers, analysts, legal and game teams from idea to production.
• Shape product direction using data, feedback and real‑world usage insights.
• Work directly with game teams to keep the SDK footprint small and integrations smooth.
• Participate in the client support rotation, handling integration issues and production incidents.

Required profile

• Think like a product owner, caring about understandability, usefulness and success of features.
• Strong sense of ownership – follow work through testing, release and post‑launch impact.
• Comfort starting from a problem rather than a detailed specification and turning ambiguity into incremental value.
• Natural collaborator across disciplines, seeking the people closest to the problem.
• Commitment to engineering quality at massive scale – testability, backward compatibility and maintainability.
• Proven experience leading cross‑team projects with both engineering and non‑engineering stakeholders.

Required skills

• Experience building consumer‑facing mobile applications for iOS and/or Android using Swift, Kotlin, C++ or Flutter/Dart.
• Willingness to learn unfamiliar parts of the stack and work across native and web boundaries.
• Comfort using modern development tools, including AI‑assisted coding agents.