You will play a key role in the development, optimization, and maintenance of backend systems, combining hands-on engineering with technical investigation and architectural contributions.

• Design, develop, and deploy scalable, resilient backend services using cloud-first architectures, NoSQL databases, and event-driven technologies.

• Investigate complex backend issues, lead technical troubleshooting, identify root causes, and define clear paths toward resolution.

• Optimize system performance, reliability, availability, and data integrity as the platform scales.

• Build and maintain well-structured, self-documented APIs using NestJS, GraphQL, and REST.

• Develop and maintain real-time application features using WebSockets.

• Contribute to architectural decisions and technical direction, working independently and taking ownership of complex initiatives.

• Collaborate with cross-functional teams, including Product Management and QA, to design, deliver, and improve high-quality features.

• Implement effective unit and integration tests to ensure code quality and system stability.

• Apply observability and monitoring practices to identify issues, track performance, and improve operational resilience.

• Develop a strong understanding of the product and its mobile-first environment to ensure backend solutions support user and business needs.

Requirements

The ideal candidate is an experienced backend engineer with strong Node.js expertise, a solid understanding of cloud infrastructure and distributed systems, and the ability to contribute independently in a collaborative product environment.

• At least 5 years of professional backend development experience using Node.js.

• Strong proficiency in TypeScript.

• Demonstrated experience building backend services and self-documented APIs with NestJS, using GraphQL and/or REST.

• Strong understanding of event-driven architectures, NoSQL databases, and cloud-native application development.

• Hands-on experience with AWS services, particularly ECS, DynamoDB, SQS, EventBridge, and PostgreSQL.

• Practical experience developing real-time features using WebSockets.

• Familiarity with observability and monitoring tools such as Sentry, Datadog, CloudWatch, and Amplitude.

• Experience writing reliable unit and integration tests.

• Previous experience in a mobile-first organization, with the ability to understand product requirements from an engineering perspective.

• Strong problem-solving and analytical skills, including the ability to investigate complex systems and work through technical challenges independently.

• Full professional proficiency in English.

• Strong collaboration and communication skills, with the flexibility to adapt to different working approaches.

Additional experience that would be an advantage:

• Experience with Infrastructure as Code tools, particularly Terraform.

• Familiarity with specialized services and platforms such as Apollo, Firebase Authentication, Stream Chat, Cloudflare, and Snowflake.

• Knowledge of globally distributed systems and large-scale application architecture.

• Interest or experience in machine learning and AI-powered recommendation engines.

• A test-driven mindset, with an emphasis on automation, efficiency, and continuous improvement.

• Familiarity with mobile development technologies, particularly React Native.

Benefits

• Health insurance: Access to health coverage.

• Well-being support: Dedicated well-being coverage.

• Sports benefits: Sport coverage to support an active lifestyle.

• Learning budget: Financial support for continuous learning and professional development.

• Paid vacation: Paid annual leave.

• Paid sick leave: Time off to recover when needed.

• Public holidays: All public holidays are paid days off.

• Remote working: Work remotely as part of an international, distributed team.

• Integrated team experience: Work directly with the client's team, using its tools and technologies and collaborating closely with its members.

• Long-term collaboration: Join an extended-team model designed around projects that can last several years.

• Team connection: Opportunities to participate in client visits, team-building activities, and informal team events.