Mid-Senior Swift Developer — Brussels

Company Description

Optisuite empowers opticians with innovative digital tools to enhance efficiency, improve the customer experience, and drive business growth. Through streamlined workflows, real-time insights, and interactive tools, Optisuite transforms daily operations in optical stores. By integrating technology with precision, our platform enables opticians to focus on delivering exceptional customer care. Join Optisuite and be part of shaping the future of optical retail through smart, modern solutions. Headquartered in Brussels, Optisuite is revolutionizing the optical industry.

Find out exactly what skills, experience, and qualifications you will need to succeed in this role before applying below.

Join us at the right moment: early team members have the opportunity to participate in our ESOP (Employee Stock Ownership Plan), giving you a real stake in the company you help build.

Role Description

This is a full-time on-site role for a Senior Swift Developer based in Brussels. The Senior Swift Developer will be responsible for designing, developing, and maintaining high-quality iOS applications. Responsibilities include collaborating with cross-functional teams, implementing back-end integrations, troubleshooting issues, and optimizing application performance. The role also involves mentoring junior team members and contributing to Optisuite's innovative approach to optical technology.

Qualifications

• A solid foundation in Computer Science and Object-Oriented Programming (OOP)
• Proficiency in Software Development and Programming, with expertise in Swift for iOS
• Experience in Back-End Web Development and working with APIs
• Strong problem-solving skills and attention to detail
• Ability to collaborate in a team environment and mentor less experienced developers
• Familiarity with UI/UX principles and mobile application testing
• Bachelor’s degree in Computer Science or a related field; relevant certifications are a plus
• Prior experience in the optical or retail technology domain is an advantage
• Swift 5 / SwiftUI — native iOS UI development, state management
• UIKit — legacy screens, custom views, animations
• ARKit / RealityKit
• Swift Package Manager — dependency management
• XCTest / SwiftUI Tests xqknzec — unit and UI test coverage
• Xcode & Instruments — profiling, debugging, App Store submission

Languages

• English or French + good working knowledge of English

Nice to have

• ERP API experience — third-party integrations
• OAuth2 — authentication flows
• Prior SaaS product experience — a strong differentiator

5+ years of experience required · Senior level · Brussels, Belgium

What we offer

• Competitive salary
• 1 day/week remote (work from home)
• Permanent contract
• The opportunity to participate in our ESOP
• Brussels-based, August 2026 start