Lead Backend Engineer

We're looking for a Lead Software Engineer to join our Communities Team, which empowers businesses and creators to build vibrant, branded spaces where members can connect, share content, and engage in meaningful discussions. Communities power social interaction and collaboration across web and mobile for over 1 million active users, helping creators and agencies deepen relationships with their audiences.

As a Lead Engineer, you'll architect and scale the systems behind posts, feeds, notifications, memberships, and moderation workflows - all while ensuring data security, privacy, and reliability in a multi-tenant environment. You'll tackle complex problems in real-time updates, multi-tenant access control, and performance optimisation while collaborating with product and infrastructure teams to shape the long-term technical roadmap. This role offers the opportunity to deliver a highly engaging experience at scale for the growing creator and business ecosystem.

• Lead the design and development of scalable, high-performance systems improve reliability, latency, and throughput across time-sensitive APIs and workflows
• Own features end-to-end, from architecture and implementation to testing, deployment, and ongoing optimisation.
• Work hands-on with technologies like NestJS, Firestore, Mongo
  
  DB, Postgre
  
  SQL, Redis, queuing systems, and service mesh-based microservices.
• Drive technical direction across both product features and platform layers to ensure stability, scalability, and maintainability.
• Integrate and optimise AI-assisted development tools, improving developer productivity while ensuring accuracy and minimising hallucinations.
• Collaborate closely with product, design, and AI teams to deliver impactful, user-facing features and backend systems.
• Mentor and support other engineers, fostering a culture of technical excellence, learning, and ownership.
• Proactively identify and solve performance bottlenecks, scalability challenges, and security concerns in a multi-tenant environment.

• 6+ years of backend engineering experience, including designing fault-tolerant systems and working on high-scale platforms.
• Deep expertise in distributed systems, event-driven architectures, and asynchronous job processing.
• Strong experience with relational and No
  
  SQL data models (especially with complex temporal data).
• Knowledge of modern front-end frameworks (e. g., React, Vue, Angular) and building full-stack web applications.
• Proven track record of architecting complex systems and delivering scalable, high-performance web apps in production.
• Strong understanding of software design patterns, API design, and microservices architecture in a multi-tenant environment.
• Skilled in guiding technical architecture, making high-impact engineering decisions, and mentoring fellow engineers.
• Experience with code quality practices, automated testing, CI/CD pipelines, and dev tooling optimisation.
• Excellent problem-solving skills, with clear and collaborative communication across cross-functional teams.
• Preferred Experience:
  
  Experience with AI tools and contributions to open-source tools, internal platforms, or engineering blogs.