Senior Engineer focusing on backend development, architecture, and team mentorship at Paymenttools. Joining a mission to transform payment transactions in Europe.
Responsibilities
Contribute to architecture and system design in a complex backend landscape, influencing how the system evolves
Be hands-on with coding, solving complex problems while mentoring and supporting the team
Evolve existing systems and ensure scalable, maintainable, and robust solutions
Make informed decisions in ambiguous or complex situations, balancing short-term delivery with longer-term system health
Collaborate closely with adjacent teams and stakeholders, ensuring clear communication of technical decisions
Actively mentor and coach team members, supporting their professional growth
Support the team in taking technical direction, helping shape systems and practices without being the sole decision-maker
Requirements
7+ years of experience in backend engineering, ideally in high-throughput or regulated systems
Passion for coding, with deep knowledge of Java and/or Kotlin (JVM) and frameworks like Spring / Spring Boot
Experience with microservices, distributed systems, and API design
Proven experience in architectural decisions and system design at a senior level
Strong communication skills to explain technical concepts clearly and align teams and stakeholders
Experience with cloud environments (AWS or GCP) and Docker/Kubernetes
Knowledge of CI/CD, monitoring, and system operations (e.g., Prometheus, Grafana)
Solid understanding of security concepts (authN/authZ, encryption, secure data handling)
Strong experience with relational databases, ideally complemented by NoSQL
Curiosity for emerging technologies, e.g., AI-driven development or systems
Experience with concurrency and parallelism is a plus
Fluent English; German skills are a plus.
Benefits
Deutschland ticket, subsidized subscription
1.000 euro annual learning and development budget + internal training platforms
Discounts on travel, fashion, technology, and more through our corporate benefits
REWE discount card for discounts for REWE group retailers
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