Senior Mobile Engineer (Flutter/Dart) — Lead & Deliver

Zenzero Solutions Ltd; United Kingdom; Remote; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Private health insurance

Generous holiday + birthday day off

Enhanced pension contributions

Regular social events

Job summary

Zenzero Solutions Ltd is seeking a Senior Mobile Developer to lead design, development and delivery of mobile and cross-platform apps. You will be the primary technical authority and collaborate with clients and internal teams to shape requirements and technical decisions.

You will combine hands-on Flutter/Dart work with leadership, modernising legacy code when needed, and guiding junior developers while delivering robust app solutions across iOS and Android.

Qualifications

• Minimum 5 years commercial development experience.
• Flutter / Dart - strong commercial experience building cross-platform mobile apps.
• iOS and Android development principles and deployment processes.
• Experience working with legacy app development technologies and codebase migration.
• RESTful API design and integration.
• Version control (Git) and collaborative development workflows.
• Strong communication skills - comfortable dealing directly with clients.

Responsibilities

• Lead the design, development and delivery of mobile and cross-platform applications.
• Act as the primary technical authority for app development within the DDS team.
• Work with clients and internal stakeholders to understand requirements and deliver solutions.
• Maintain and modernise legacy application codebases where required.
• Mentor junior and mid-level developers on app development best practices.
• Contribute to technical planning, estimation and architecture decisions.
• Native iOS (Swift) or Android (Kotlin / Java) development.
• CI/CD pipelines and mobile app deployment (App Store / Play Store).
• Microsoft Azure or other cloud platforms.
• UX/UI principles for mobile applications.
• Private health insurance
• Generous holiday allowance + a day off on your birthday
• Enhanced pension contributions
• Regular social events across all our offices

Skills

Flutter/Dart

Cross-platform mobile

iOS development

Android development

RESTful APIs

Git

Client communication

Legacy code/ migration

Job description

Zenzero Solutions Ltd is seeking a Senior Mobile Developer to lead design, development and delivery of mobile and cross-platform apps. You will be the primary technical authority and collaborate with clients and internal teams to shape requirements and technical decisions.

You will combine hands-on Flutter/Dart work with leadership, modernising legacy code when needed, and guiding junior developers while delivering robust app solutions across iOS and Android.