Software Engineer Mobile - Senior

HumanInTech; Town of Belgium (WI); Remote; EUR 70,000 - 100,000; Full time

Job summary

HumanInTech is seeking an experienced React Native Mobile Engineer to design and develop the mobile foundations of a next-generation digital platform for a Belgian public-sector organisation.

You will work with the Digital Platform Architect, build reusable UI components, ensure cross-platform quality, and contribute to a modular, scalable mobile architecture in an Agile, full-time role in Belgium.

Qualifications

• Proven experience as a React Native Developer or Mobile Engineer.
• Experience building production mobile apps.
• Strong React Native and TypeScript skills.
• Knowledge of iOS and Android platforms.
• Experience with automated testing practices.
• Experience in Agile environments.

Responsibilities

• Design and develop mobile platform capabilities using React Native and TypeScript.
• Build reusable UI components and contribute to the Design System.
• Ensure cross-platform consistency (iOS and Android).
• Integrate REST APIs and optimize mobile performance.
• Contribute to architecture discussions and proof-of-concepts.
• Participate in code reviews and testing strategies.
• Troubleshoot, root-cause analysis, and improve stability.

Skills

React Native

TypeScript

Mobile engineering

REST APIs

Agile

Design Systems

Quality & testing

Code reviews

Performance optimization

Education

Bachelor's degree or higher

Job description

What you will do

You will be responsible for designing and developing the mobile foundations of a next-generation digital platform for a Belgian public-sector organisation. Working closely with the Digital Platform Architect, you will contribute to scalable, maintainable, and reusable mobile capabilities that support platform growth and integrations.

Your primary responsibilities include:

• Designing and developing mobile platform capabilities using React Native and TypeScript
• Contributing to modular and reusable mobile component development
• Supporting the evolution toward a platform-oriented mobile architecture
• Ensuring consistency across iOS and Android implementations
• Participating in implementation of platform integration mechanisms
• Contributing to the Design System by developing reusable UI components
• Ensuring consistency, quality, accessibility, and usability across mobile experiences
• Applying software engineering best practices and coding standards
• Participating in code reviews, technical discussions, and design activities
• Implementing automated testing strategies

You will also support troubleshooting and root cause analysis, contribute to application performance and stability improvements, collaborate with the Digital Platform Architect and Backend Engineers, participate in architecture discussions, and support proof-of-concepts and MVP initiatives.

What we are looking for

Technical requirements:

• Proven experience as React Native Developer, Mobile Engineer, or Software Engineer
• Experience developing and maintaining production mobile applications
• Strong experience with React Native and TypeScript
• Good understanding of iOS and Android platforms
• Understanding of component-based application design
• Experience building reusable UI components and Design Systems
• Experience integrating REST APIs
• Understanding of mobile architecture patterns
• Knowledge of application performance optimization techniques
• Experience with automated testing practices

Non-technical requirements:

• Strong problem-solving skills
• Ability to work autonomously and collaboratively
• Strong communication skills
• Ability to challenge technical decisions constructively
• Continuous learning mindset
• Pragmatic and delivery-oriented approach

Methodology:

• Experience working in Agile environments

Languages:

• French or Dutch (at least one mandatory)
• English (mandatory)

The setting

This is an assignment with a Belgian public-sector organisation. The work environment follows Agile methodologies, and you will be part of a collaborative team working on platform evolution and digital transformation.

You can join us for this assignment as a freelancer or as an employee of HumanInTech. Same role, same team. If you join as an employee, your employment continues beyond this assignment. When it ends, we’ll work together to find your next assignment.

Location: Belgium

Employer / contracting party: HumanInTech

Engagement: Freelance or employed by HumanInTech

Working hours: Full-time

Experience: 6–10 years or more

Education: Bachelor's or more

Published: September 2026