Senior Software Engineer, iOS
As a senior software engineer, the individual is a core team member on whom the team relies to consistently deliver high-quality solutions. They take ownership to help the team reach their goals, including actively sharing knowledge and providing feedback. The engineer can identify and initiate activities to address improvement areas within the team. With a mature view on technical governance, they have a long-term perspective of the team's components and applications.
This position is for an exceptional Senior iOS Developer who is keen to work on Native Apps. The engineer will be working with great colleagues from diverse backgrounds who are passionate about what they do. This passion will ignite creativity in a fast-paced yet fun, Agile environment where technology and problem solving are key.
- Design, implement, test and deploy high-quality iOS apps with a focus on performance and scalability, using the most appropriate techniques and design patterns.
- Work closely with a Product Owner, Engineer Team Lead and the rest of your team - confidently contributing to architectural discussions and proactively challenging and improving requirements.
- Develop in Swift using your expert knowledge of Xcode, applying good practices such as TDD and BDD with a shift-left mindset to catch defects early.
- Actively contribute to and improve best practices - from logging and performance testing to CI/CD pipeline maintenance.
- Conduct and receive code reviews constructively, helping to raise the bar across the team.
- Break down technical GAP documents and requirements into well-defined, deliverable work items.
- Take ownership of incident management and the writing, execution and analysis of performance tests.
- Represent the team effectively in stakeholder discussions, using domain concepts and language with confidence.
- Apply appropriate code analysis tools to continuously improve code quality and security.
- Solid software engineering background with at least 6 years' experience of iOS app development (required)
- Expert knowledge of iOS SDK, Swift and Objective-C (required)
- Proven ability to write high-quality, performant code independently, drawing on experience across different systems and architectures (required)
- Strong experience with multithreaded programming and network protocol design, including RESTful web services (required)
- Experienced in test automation, TDD, BDD and quality assurance best practices (required)
- Experienced in incident management and risk assessment (required)
- Understanding of secure development principles and impact analysis (required)
- Excellent written and verbal English with strong communication skills for both team and stakeholder engagement (required)
- Experience with Agile methodologies and a track record of suggesting process improvements (nice-to-have)
- Knowledge of programming design patterns (nice-to-have)
- Familiarity with Atlassian tools such as BitBucket, JIRA and Confluence (nice-to-have)
FDJ United is one of Europe's largest gaming and betting groups, formed after French lottery operator La Française des Jeux (FDJ) acquired Kindred Group - the company behind Unibet - in 2024 and rebranded the enlarged group in 2025. Headquartered in Boulogne-Billancourt, France, it operates lottery, online sports betting, casino and poker across multiple European markets and Australia. Its portfolio includes well-known online brands such as Unibet, 32Red and Maria Casino, alongside FDJ's French lottery and retail network. The group is listed on the Euronext Paris exchange.
