Senior Backend Engineer
Pubblicato il 21-10-2026 - trtwo in Milano
Career path toward
Staff Engineer or Engineering Manager within 2-3 years
Salary Range: 55,********,000 EUR/year + stock options
A leading company in the fintech and digital payments sector is looking for a Senior Backend Engineer to join their core payments team.
You will design and build scalable microservices processing millions of transactions daily across European markets, working closely with product, compliance, and infrastructure teams to deliver secure, high-performance APIs.
Responsibilities
Design and implement RESTful APIs and event?driven microservices for payment processing
Optimize database queries and ensure sub?100ms response times at scale
Collaborate with DevOps to manage CI/CD pipelines and Kubernetes deployments
Conduct code reviews and mentor mid?level engineers
Participate in on?call rotation and incident response
Contribute to architecture decisions and technical roadmap
Must?have Requirements
5+ years backend development experience with Java or Python
Strong knowledge of PostgreSQL, Redis and message queues (Kafka/RabbitMQ)
Experience with microservices architecture and container orchestration
Understanding of PCI?DSS compliance and secure coding practices
Nice?to?have Requirements
Experience in fintech or payment processing
Knowledge of open banking APIs (PSD2)
Familiarity with Terraform and infrastructure as code
Contributions to open?source projects
Personal Requirements
Strong ownership mindset and ability to work independently
Excellent problem?solving under pressure
Clear communication skills in a remote?first environment
Passion for building reliable systems
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