Senior Backend Engineer

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

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