Lead Software Engineer

Reports to : Head of Software Development / CTO

Role Overview

My client is looking for an experienced and hands-on Tech Team Lead to guide one of our cross-functional engineering teams. You will lead the design and development of scalable services in their ZONOS IoT platform, contribute to architecture decisions, and mentor a talented team of backend and frontend developers. This is a high-impact role focused on delivering secure, distributed, and real-time data systems in critical infrastructure.

Key Responsibilities

• Lead and mentor a cross-functional development team (backend, frontend, QA)
• Design, develop, and maintain critical components of our ZONOS platform using Kotlin, Spring Boot, Kafka, PostgreSQL, and Oracle
• Drive architectural decisions and ensure best practices in scalability, performance, and maintainability
• Collaborate with product owners, DevOps, and QA to deliver high-quality features from concept to production
• Oversee and improve CI / CD pipelines (Docker, Kubernetes, GitLab CI)
• Conduct code reviews and pair programming sessions to foster a high-quality engineering culture
• Manage sprint planning, estimation, and delivery timelines in coordination with the product team
• Support a culture of ownership, continuous improvement, and learning

Your Profile

• 5+ years of software development experience, with at least 2 years in a leadership or senior engineering role
• Strong proficiency in Kotlin or Java, and experience with Spring Boot
• Experience with Apache Kafka, PostgreSQL, and/or Oracle
• Familiarity with containerization (Docker) and orchestration (Kubernetes)
• Experience with Angular and TypeScript is a plus
• Solid understanding of scalable system design, distributed systems, and IoT / edge computing concepts
• Excellent communication skills and a collaborative leadership style
• Fluent in English (German is a plus)

Why Join Us?

• Work on technology that impacts global energy, water, and sustainability efforts
• Flat hierarchies, open feedback culture, and flexible working models
• International, purpose-driven team with 20+ nationalities
• Opportunity to shape critical infrastructure in a high-growth environment
• Competitive salary and relocation support if needed