Senior Android Engineer (Contract) - Real-Time Messaging

Randstad Technologies Recruitment; City Of London; On-site; GBP 111,000 - 166,000; Full time

Job summary

Randstad Technologies Recruitment seeks a Senior Android Engineer (contract) to develop in-app messaging and social features for the Core Experience. This role involves indirect mentoring across cross-functional teams and guiding performance-focused Android implementations.

Based in London, you will work on high-impact mobile features under IR35 conditions, collaborating with product and backend teams to ensure scalable, secure user experiences.

Qualifications

• 8+ years of Kotlin/Android development experience.
• Experience with real-time data sync and API performance optimization.
• Familiarity with agentic tools such as Cursor/Claude.

Responsibilities

• Develop in-app messaging and social features for the Core Experience.
• Lead cross-team projects and mentor junior engineers (indirect management).

Skills

Kotlin/Android

Real-time sync/API performance

Tools

Cursor/Claude tools

Job description

Randstad Technologies Recruitment seeks a Senior Android Engineer (contract) to develop in-app messaging and social features for the Core Experience. This role involves indirect mentoring across cross-functional teams and guiding performance-focused Android implementations.

Based in London, you will work on high-impact mobile features under IR35 conditions, collaborating with product and backend teams to ensure scalable, secure user experiences.