Senior Backend Engineer

We’re on a mission to reshape how companies provide Corporate mobility to their employees. As a fast-growing SaaS startup in the mobility tech space, we help modern employers offer smart, flexible, and sustainable commuting solutions to their teams — from public transit to bike leasing and shared mobility services.Backed by forward-thinking investors and trusted by top enterprise clients, we’re about to scale rapidly across Europe. We are looking for a Senior Backend Engineer to continue developing our platform.

Tasks

As a Senior Backend Engineer you will play a key part in shaping both the technical vision and the execution of the backend systems that power our corporate mobility platform. In addition to designing, developing, and maintaining scalable and robust backend infrastructure, you will define system architecture, and drive key technical decisions that influence the future of our platform.

You’ll tackle complex challenges around performance, reliability, and security while aligning the team around best practices. Your work will directly impact how thousands of employees move every day, and how our platform scales to meet the needs of a growing enterprise customer base.

• Design, develop, and deploy high-performance, scalable, and secure code in NestJS and Typescript in collaboration with other engineers, designers and product managers.
• Optimize database queries and schema designs for improved performance and scalability (PostgreSQL, TypeORM).
• Implement and manage message queues and event-driven architectures to ensure reliable data processing and inter-service communication (BullMQ, Redis)
• Ensure the stability and reliability of our systems through robust testing, monitoring, and debugging.
• Exchange and mentor other engineers and contribute to a culture of technical excellence and continuous learning.

Requirements

• 5+ years of experience in backend development, with at least 2 years in high-load systems (a degree in computer science a plus)
• Strong proficiency in Node.js and Typescript
• Deep understanding of relational databases (PostgreSQL) and experience optimizing queries and indexes
• Experience implementing message queues (BullMQ, RabbitMQ, or similar) and event-driven architectures
• Strong knowledge of ORMs and their impact on performance (e.g., TypeORM, Prisma)
• Familiarity with distributed systems and microservices architectures a plus
• Proficiency in writing efficient and scalable APIs
• Strong debugging and performance optimization skills
• Experience with caching strategies (Redis, Memcached) is a plus
• Excellent problem-solving skills and attention to detail
• Excellent written and verbal communication in English

Benefits

• Mobility perks for your own commuting
• Family first, be there in your family key moments. Pick up your kid from school, go to the doctor visit or just take care of them
• Work from anywhere: the office, your house, the beach or wherever you prefer
• One of the nicest offices across Berlin directly in Mitte with free coffee and beverages
• Regular team activities to enjoy together
• A motivated and fun crew to grow and learn together