Senior Mobile Application Architect / Tech Lead

Overview

We are seeking an experienced Senior Mobile Application Architect / Tech Lead to lead the technical design and delivery of a large-scale mobile application transformation program. The role is responsible for defining the target architecture, establishing development foundations, driving Kotlin Multiplatform adoption, and ensuring high-quality delivery across the entire project lifecycle.

Key Responsibilities

Technical Leadership & Architecture

• Define and maintain a scalable, secure, and maintainable mobile architecture.
• Lead technical decision-making and architecture reviews.
• Align technology choices with long-term digital and business objectives.
• Support Project Managers, Architects, Product Owners, and Business Analysts with technical expertise.

Sprint 0 & Development Foundations

• Establish development environments, coding standards, and governance frameworks.
• Define Git strategies, CI/CD pipelines, testing frameworks, and quality controls.
• Prepare technical documentation, development guidelines, and onboarding materials.
• Ensure teams can rapidly and efficiently start development activities.

Kotlin Multiplatform (KMP) Leadership

• Lead the adoption and implementation of Kotlin Multiplatform.
• Define shared and platform-specific architecture layers.
• Ensure maintainability, scalability, and performance of KMP solutions.
• Provide technical coaching and guidance to development teams.
• Evaluate alternative cross-platform technologies, including Flutter.

Delivery & Team Enablement

• Perform technical estimations, risk assessments, and release planning.
• Support backlog refinement, solution design, and feature decomposition.
• Define onboarding strategies and development best practices.
• Mentor developers and foster technical excellence across teams.

AI & Innovation Governance

• Define and implement AI-assisted development practices.
• Promote the use of AI for analysis, coding, testing, documentation, and delivery activities.
• Establish governance, security, compliance, and best practices for AI usage.
• Measure productivity gains and support continuous innovation initiatives.

Required Skills & Experience

• Minimum 5 years of experience as a Tech Lead on large-scale mobile projects.
• Strong expertise in mobile application architecture and technical leadership.
• Proven experience delivering Kotlin Multiplatform applications in production.
• Advanced Android development expertise and solid knowledge of native iOS development.
• Experience establishing Sprint 0 foundations, development standards, and governance.
• Strong knowledge of CI/CD, DevSecOps, automated testing, and quality assurance practices.
• Experience with Jira, Confluence, and Agile delivery frameworks.
• Proven ability to coach development teams and support technical decision-making.
• Experience working with high-traffic or large-scale mobile applications.

Soft Skills

• Strong leadership and coaching abilities.
• Excellent communication and stakeholder management skills.
• Strategic mindset with long-term architectural vision.
• Pragmatic, delivery-focused, and results-oriented approach.
• Passion for innovation and emerging technologies.

Languages

• French and/or Dutch.
• English is an asset.

Location

• Brussels, Belgium.
• Onsite presence required 2–3 days per week.
• No remote option.

Nice to Have

• Experience with Flutter.
• Experience in transportation, mobility, or real-time applications.
• Cloud, Mobile Architecture, AI, or Software Engineering certifications.
• Experience implementing AI governance frameworks in software delivery environments.