Senior Software Engineer, Back End Developer - Core Domain

Please note that this opportunity requires relocation to our Milan office.

Satispay was born to revolutionise everyday payments – making them simple, fair, and accessible to everyone. Now, the focus has moved even further, aiming to shape the future of money. We're a movement empowering millions of people, driven by a shared purpose to tackle big challenges. And we’re just getting started.

You will be joining the Core Team focused on critical systems. This includes managing interactions with external banks, orchestrating payments, and providing the foundational infrastructure for Identity and Access Management. Additionally, the team is responsible for risk‑related services, specifically credit risk management and fraud detection.

We move quickly, think boldly, and trust each other to challenge the norm, learning and growing as we go. If you’re looking for more than just your next job – if you want to build something impactful with a talented team – you’re in the right place.

As a Senior Software Engineer, Back End Developer in the Core Team
, you’ll play a defining and strategic role in shaping the backbone of our payment platform. You will work on the mission‑critical engines that power Satispay, ensuring reliability, consistency, and security for millions of users.

Here’s what your day‑to‑day will look like:

• Define Technical Strategy: You will define the long‑term technical vision for our most critical domains. You will architect complex subsystems that serve as the foundation for the entire company, balancing cross‑product requirements with the need for extreme speed and reliability.
• Architect Core Financial Systems: You will design and scale the high‑throughput engines responsible for our transaction ledger, payment orchestration, and integrations with external banks, ensuring our "source of truth" is always accurate and available.
• Own Identity & Security Infrastructure: You will provide the base infrastructure for Identity and Access Management (IAM). You will build and maintain the authentication and authorization layers that secure and protect our users.
• Engineer Risk & Fraud Solutions: You will develop and optimize sophisticated services dedicated to managing credit risk and fraud detection, implementing logic that protects the company in real‑time.
• Technical Thought Leadership: You will be a key contributor to the product development lifecycle by actively defining requirements. This involves collaborating closely with Product Managers, technical leads, and business stakeholders to translate high‑level objectives into clear and actionable requirements. Your responsibilities will include conducting analysis, documenting detailed specifications, and ensuring that all defined requirements are traceable, verifiable, and align with the overall strategic goals and technical architecture.
• Develop Talent: Mentor the next generation of engineers, fostering a culture of precision, operational excellence thinking, and high‑quality engineering in a high‑paced environment. Drive the adoption of AI‑powered tools and methodologies within the team to significantly accelerate development cycles and enhance output quality and efficiency.

Expect challenges, collaboration, and the freedom to bring your ideas to life. Our tech stack includes (but it’s not limited to) Postgre

SQL, Java, and Spring Boot. We rely on AWS for our infrastructure, with microservices deployed on EC2/ECS, S3 for storage, AWS Lambda for serverless functions, and Kinesis and Elastic Search for log streaming. You'll take ownership of your work from start to finish.

We need a visionary problem‑solver, who excels in cross‑team collaboration with deep expertise. Does it sound like you?

• Extensive
  
  Experience:
  
  You have at least 7 years of related experience in back‑end software engineering. You have a proven track record of architecting and maintaining microservices in a high‑paced environment, building high‑throughput systems capable of serving millions of users with high availability.
• Tech Expertise: You possess a deep experience working with Java and a strong understanding of cloud platforms…