Lead Backend Data Engineer

What is this position about?

- Design and build scalable backend systems using Java, with deep expertise in production-grade application development.

- Lead the architecture and implementation of distributed systems, ensuring reliability, scalability, and performance across complex multi-service environments handling large-scale data processing.

- Develop and optimize concurrent and multi-threaded applications, implementing thread synchronization patterns, locks, barriers, and atomic operations for high-performance, data-intensive systems.

- Build and maintain big data pipelines and infrastructure to handle high-volume data ingestion, processing, and storage at scale.

- Manage containerized workloads using Kubernetes, defining deployment strategies, scaling policies, and resource management for backend services processing big data workloads.

- Collaborate with cross-functional teams to define service contracts, APIs, and integration patterns.

- Implement observability and monitoring solutions to ensure system health and performance visibility.

- Support production deployments, troubleshoot complex issues, and drive continuous improvement initiatives.

- Deep proficiency in Java with strong understanding of advanced language features and best practices.

- Solid expertise in concurrency patterns, multi-threading, thread synchronization (locks, barriers, mutexes), atomic operations, and volatile semantics.

- Proven hands-on experience designing and implementing distributed systems, including challenges like consistency, fault tolerance, and data replication.

- Practical knowledge of Kubernetes for container orchestration, deployment strategies, and service management (production-level exposure expected).

- Strong SQL and database design fundamentals.

- Experience with system profiling, performance analysis, and optimization techniques.

- Familiarity with monitoring and observability tools such as Grafana, Prometheus, or Loki.

- Excellent problem-solving skills and ability to debug complex, distributed system issues.

- Strong communication skills and ability to mentor and collaborate with team members.

- Experience with Spring Framework or other modern Java backend frameworks is a plus.

- Background in Kafka or event-streaming architectures is a plus.

- Familiarity with reactive programming frameworks or reactive systems design is a plus.

- Prior experience in programmatic advertising or real-time data processing systems is a plus.

What about languages?

English: Advanced (required for effective communication with global teams)
How much experience must I have?

5+ years of experience in Backend Engineering or related disciplines such as Systems Engineering or Full-Stack Development, with demonstrated expertise in distributed systems and multi-threaded application design.
Our Perks and Benefits:
Every day lunches! (headquarters):

- Vegetarian, vegan, gluten and sugar free options.

- Gourmet meals every Friday with our on-site chef!

⚖️ Flexible working options to help you strike the right balance.

💻 All the equipment you need to harness your talent (Macbook and accessories).

🍎 Snacks and beverages available everyday (headquarters).

🎉 After office events, football, tennis and game nights (headquarters).

⚽ Everyone is welcome to join our football league every Wednesday's and Friday's.

🎱 Challenge your teammates to a pool game and win the office's trophy!

🎾 Tennis courts available for friendly matches.

🎮 Not a sports person? Don't worry, we also have chess championships, game and music nights for you to join!
📚 Learning opportunities:

- AWS Certifications (we are AWS Partners).

- Study plans, courses and other certifications.

- English Lessons.

- Learn from your teammates on our Tech Tuesdays!

🧭 Mentoring and Development opportunities to shape your career path.
🎁 Anniversary and birthday gifts.

📍 Great location and even greater teammates!

So what are the next steps? Our team is eager to learn