legacy management, Duck Conf 2026, Maria Mokbel, technical debt, startup challenges, software engineering, technical leadership, innovation in startups, legacy systems ## Introduction In the fast-paced realm of startups, innovation is often accompanied by the shadow of technical legacy. At the Duck Conf 2026, Maria Mokbel, the founding engineer and tech lead at Billy, shared her invaluable insights on how her team successfully navigated the complexities of technical legacy accumulated in just two years. This article dives deep into her experiences, the challenges faced, and the strategies implemented to "tame the legacy" in a startup environment. ## Understanding Technical Legacy ### What is Technical Legacy? Technical legacy refers to the outdated or monolithic codebases, systems, and practices that can hinder a startup’s agility and innovation. In a rapidly evolving tech landscape, legacy systems can become a bottleneck, consuming resources and slowing down product development. For startups like Billy, understanding and managing these legacies is crucial for sustained growth and competitiveness. ### The Impact of Technical Debt One of the core themes of Maria Mokbel's presentation was the concept of technical debt—an accumulation of suboptimal solutions that can lead to increased costs and reduced efficiency over time. Startups often find themselves in situations where quick fixes are adopted to meet immediate needs, resulting in a backlog of unresolved issues that can derail future progress. ## Maria Mokbel's Journey at Billy ### The Early Days: Embracing the Challenge Billy, like many startups, began its journey with an ambitious roadmap, aiming to disrupt traditional markets with innovative solutions. However, within just two years, the team was faced with an overwhelming amount of legacy code that threatened to impede their growth. Maria highlighted the importance of recognizing this challenge early on and addressing it head-first, rather than allowing it to snowball into a more significant issue. ### Strategies for Managing Technical Legacy In her talk, Maria outlined several key strategies that her team at Billy employed to effectively manage their technical legacy: #### 1. **Prioritization of Technical Debt** Maria emphasized the importance of prioritizing technical debt alongside new feature development. By allocating resources and time to address legacy code, the team ensured that they weren't continuously adding to the problems they faced. #### 2. **Establishing Clear Documentation** A crucial step in taming technical legacy is maintaining thorough documentation. Maria noted that comprehensive documentation not only aids current team members but also serves as a valuable resource for future hires. This practice helps mitigate the risks associated with knowledge silos and equips the team to make informed decisions about legacy systems. #### 3. **Incremental Refactoring** Rather than attempting a complete overhaul of their codebase, Maria advocated for an incremental approach to refactoring. By breaking down the process into manageable chunks, the team could gradually improve the quality of their code while still delivering new features to users. #### 4. **Fostering a Culture of Continuous Learning** To address technical legacy, Maria stressed the importance of fostering a culture of continuous learning within the engineering team. Encouraging team members to stay updated on best practices and emerging technologies can help prevent the accumulation of technical debt in the first place. ### Building a Resilient Team Another critical aspect of Maria's discussion revolved around team dynamics. She highlighted the need for effective communication and collaboration within the engineering team. By promoting a culture where team members felt comfortable discussing challenges and sharing their insights, they could work together more effectively to tackle legacy issues. ## The Role of Leadership ### Leading by Example Maria Mokbel's experience illustrates the pivotal role of technical leadership in managing legacy systems. As a tech lead, she recognized that her leadership style directly influenced her team's ability to embrace change and confront challenges. By modeling a proactive approach to technical debt management, she inspired her team to adopt the same mindset. ### Stakeholder Engagement To effectively manage technical legacy, it's essential for tech leads to engage with stakeholders beyond the engineering team. Maria discussed the importance of communicating the implications of technical debt to executives and product managers, ensuring that everyone understood the long-term benefits of investing in legacy management. ## Conclusion Managing technical legacy in a startup environment is no small feat, especially within the demanding landscape of rapid innovation. Maria Mokbel's insights from Duck Conf 2026 provide a roadmap for other startups facing similar challenges. By prioritizing technical debt, maintaining clear documentation, embracing incremental refactoring, and fostering a culture of continuous learning, startups can not only tame their technical legacy but also pave the way for future growth and success. As startups continue to evolve and adapt, the lessons learned from Maria's experience at Billy serve as a beacon for those navigating the turbulent waters of technical legacy. Through effective leadership and a commitment to quality, the journey from chaos to clarity is entirely possible. Source: https://blog.octo.com/duck-conf-2026-cr-apprivoiser-le-legacy-en-startup-1