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Lead Backend Developer (Lead Engineer) (Remote - Europe) at Jobgether. This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Lead Backend Developer (Lead Engineer) in Europe.. As a Lead Backend Developer, you will take ownership of the architecture, design, and execution of a high-scale retail platform. You will lead a team of backend developers and AI specialists, defining technical standards, building robust microservices, and managing AWS infrastructure to support millions of daily transactions. This role offers a hands-on leadership opportunity where you can influence system design, security, observability, and API governance while collaborating with product and mobile teams. The position starts as a 4-month engagement with strong potential to transition to a full-time leadership role. You will work in a fully remote, globally distributed environment, applying your expertise to create a scalable, resilient backend ecosystem. Your work will directly impact the success of retail operations across diverse markets.. . Accountabilities. Lead the design and maintenance of the backend architecture, applying Domain-Driven Design principles for scalable microservices.. Set up and manage AWS infrastructure using Infrastructure as Code (AWS CDK), including EKS with Fargate, RDS, S3, Cognito, and CI/CD pipelines.. Develop high-quality, production-ready code in Java and Spring Boot for core backend components.. Oversee a team of backend developers, conducting code reviews, guiding best practices, and ensuring team alignment.. Define database schemas, implement migration strategies, and optimize PostgreSQL performance.. Establish API standards, documentation, and versioning to maintain a consistent and reliable platform.. Ensure backend security, including data protection, secret management, and VPC network security.. Implement observability and monitoring strategies using AWS CloudWatch and X-Ray.. Collaborate closely with product and mobile teams to deliver integrated solutions across the platform.. 8+ years of backend development experience, with extensive knowledge of Java and Spring Boot.. Proven experience building and deploying complex microservices architectures.. Deep understanding of Domain-Driven Design (DDD) principles.. Hands-on experience with AWS services: EKS, Fargate, RDS, S3, API Gateway, SQS/SNS, and Cognito.. Proficiency with Infrastructure as Code (AWS CDK) and CI/CD pipelines.. Experience integrating third-party APIs; WhatsApp Business API experience is a strong plus.. Strong database design and performance optimization skills, including PostgreSQL and Redis caching.. Demonstrated ability to lead small development teams, conduct code reviews, and enforce technical standards.. Excellent communication skills in English; Spanish is a strong advantage due to project focus.. Experience in highly scalable, high-availability, and secure backend systems.. . Company Location: France.