Senior Backend Engineer

Join GLS/NXT as a Senior Backend Engineer and help shape the future of out\-of\-home delivery. We’re building the OOH Platform \- a scalable system that empowers carriers across multiple countries to deploy, manage, and optimize parcel locker networks with ease.

At GLS/NXT, you’ll work at the intersection of startup energy and enterprise muscle \- moving fast, experimenting freely, and owning your work end\-to\-end. We care deeply about solving real user problems and building reliable, high\-quality backend systems that make logistics smarter and more connected.

If you’re driven by impact, thrive in a collaborative and fast\-moving environment, and love turning complex challenges into elegant and simple technical solutions, we’d love to have you on board. Let’s build the future of logistics \- together.

Tasks
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• Design, build, and maintain server\-side applications with a focus on performance, scalability, and reliability.


• Collaborate with cross\-functional teams to define, design, and ship new features and improvements.


• Drive best practices in code quality, security, and testing across the development lifecycle.


• Troubleshoot, debug, and upgrade existing software systems proactively and effectively.


• Stay current with emerging technologies and industry trends to continuously drive innovation within the team.

• 5\+ years of proven experience as a Backend Engineer or in a similar role within a cross\-functional team environment.


• Proficiency in Kotlin for backend development.


• Strong hands\-on experience with Spring Boot, building robust and scalable services.


• Solid experience with SQL and relational databases, including schema design and performance optimization.


• Experience with event\-driven architectures (e.g., Kafka, SNS/SQS).


• Proficiency in REST API design principles, microservices architecture, and cloud\-based services (preferably AWS).


• Experience deploying applications using containerization and orchestration tools (e.g., Docker, Kubernetes).


• Comfortable working in an Agile environment, embracing incremental delivery and continuous feedback.


• Strong problem\-solving and analytical skills, with a keen eye for debugging and performance tuning.


• Excellent written and verbal communication skills in English, with the ability to explain complex technical concepts clearly to diverse audiences.

• Dynamic workplace: A digital environment with international projects and space to learn and grow


• Flexible work conditions: Hybrid working mode with a tailored remote policy


• Focus on learning: A personal budget (1\.000€) for learning and development initiatives


• Physical space for ideas: A great office space in Berlin Mitte with top\-tier equipment


• Transparent and competitive compensation: A salary package that reflects your expertise and experience.


• Active participation: A clear bonus system enabling participation in your and the team’s performance


• Engaging team culture: Monthly team cooking, regular events and offsites


• Vacation policy: 30 days of yearly holiday


• Reward system: Rewards for the recommendation of additional team members

GLS/NXT was founded with the mission to build the next generation of logistic experiences driven by technology \- core, adjacent \& beyond. More specifically, our sphere of interest is the Logistics and eCommerce sector. We are entrepreneurs and hence always start with the user's needs. We are located between Corporate and Startups and leverage the benefits from both (startup speed and corporate muscle). GLS/NXT inhabits different project teams, acting as startups with business responsibility and setting their own vision and mission. GLS/NXT is part of the GLS IT Services GmbH.

Commitment to Diversity

GLS/NXT is an equal opportunity employer, which means we do not discriminate on the basis of race, colour, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression. We celebrate diversity and are committed to creating an inclusive environment for all employees.

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