Lead Backend Engineer (Golang/Node JS / AWS) with German

5+ years of experience in backend development, ideally within microservices architectureStrong expertise in Node.js and GolangExperience with PostgreSQL and database design for scalable, high-performance systemsSolid knowledge of Docker and KubernetesHands-on experience with AWS services and infrastructureExperience with gRPC and REST API designFamiliarity with event-driven architectures (RabbitMQ, AWS SQS)Understanding of distributed systems and scalability principlesAbility to work independently and take ownership of complex tasksStrong problem-solving mindset and proactive attitudeVery good command of English and German (both written and spoken)Nice to have:Experience with Python (especially in ETL processes)Familiarity with NestJS frameworkExposure to Angular or Svelte frontend technologiesKnowledge of the energy or electric energy industry domainExperience working within highly agile environmentsExperienced in using AI tools in day-to-day workflow You will join the development of an advanced digital twin platform for the energy transition, designed to unify energy and climate-related data into a single, comprehensive solution.The platform supports stakeholders involved in energy transformation by providing data-driven insights and decision-making tools. It addresses key challenges such as CO₂ balancing, renewable energy expansion, power grid planning, and municipal heating strategies.Built on a modular and scalable architecture, the solution enables complex analytics and supports real-time insights in a rapidly evolving energy sector.Tech stack:Node.js (primary backend technology)Golang (microservices, gRPC-based services)Python (ETL-related components)PostgreSQLRedis (Key-Value stores)gRPC & REST APIsDocker & KubernetesAWS (cloud infrastructure)RabbitMQ / AWS SQS (event-driven architecture)NestJSAngular / Svelte (collaboration exposure)About SpyrosoftSpyrosoft is an authentic, cutting-edge software engineering company, established in 2016. In 2021 and 2022, we were among the fastest growing technology companies in Europe, according to the Financial Times. We were founded by a group of tech experts with established backgrounds in software engineering, who created an ‘engineer-to-engineer’ workplace, powered by enthusiasm, fairness and authentic relationships. Having a unique offering, which bridge the gap between technology and business, we specialise in technology solutions for industry 4.0, automotive, geospatial, healthcare & life sciences, employee experience & education and financial services industries. ,[Design, develop, and maintain scalable microservices using Node.js, Golang, and Python, Build and optimize PostgreSQL data models and queries, Develop and maintain APIs using gRPC and REST, Containerize applications with Docker and manage deployments on Kubernetes (AWS), Contribute to architecture decisions for distributed systems, Ensure system scalability, performance, and reliability, Collaborate with frontend (Angular) and backend (NestJS) teams, Work independently from concept to production delivery, Participate in agile ceremonies, code reviews, and continuous improvement initiatives] Requirements: Microservices architecture, Node.js, PostgreSQL, Docker, AWS, gRPC, REST API, RabbitMQ, Python, ETL, Nest.js, Angular, Svelte, AI