Senior Backend Engineer

trtwo; Milano; On-site; EUR 55,000 - 70,000; Full time

Benefits offered by this job

Stock options

Job summary

trtwo is seeking a Senior Backend Engineer to design and build scalable microservices for a fintech payments platform. You will work on RESTful APIs, high‑performance data stores, and secure code practices within a remote‑first environment.

You’ll collaborate with product, compliance, and infrastructure teams, mentor engineers, and contribute to the technical roadmap while supporting on-call incident response.

Qualifications

• 5+ years backend development in Java or Python
• Strong PostgreSQL/Redis knowledge and message queues (Kafka/RabbitMQ)
• Experience with microservices architecture and container orchestration
• Understanding of PCI-DSS compliance and secure coding practices

Responsibilities

• Design and implement RESTful APIs and event-driven microservices for payment processing
• Optimize database queries and ensure sub-100ms responses 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

Skills

Backend dev (Java/Python)

PostgreSQL

Redis

Kafka/RabbitMQ

Microservices

PCI-DSS security

Tools

PostgreSQL

Redis

Kafka

RabbitMQ

Kubernetes

Job description

Career path toward Staff Engineer or Engineering Manager within 2-3 years

Salary Range: 55,000 - 70,000 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