Senior Back-End Developer (Platform)

Hercle; Milano; Hybrid; EUR 50,000 - 70,000; Full time

Benefits offered by this job

Competitive salary

Career and personal growth opportunities

Flexible working arrangements

Collaborative work environment

Job summary

A fast-growing fintech company in Italy is seeking an experienced Senior Back-End Developer to design and maintain core systems for trading and infrastructure. You will work with C# in a high-performance environment, collaborating with teams and optimizing system performance. The role offers competitive salary, flexible working arrangements, and opportunities for personal growth.

Qualifications

• 5+ years of experience developing back-end systems in C#/.NET.
• Strong understanding of object-oriented programming and software design patterns.
• Experience with performance optimization.

Responsibilities

• Design and develop high-performance back-end systems using C#.
• Implement APIs and microservices.
• Collaborate with cross-functional teams.

Skills

C#

Back-end development

SQL databases

NoSQL databases

Concurrency

Problem-solving

Attention to detail

Education

Bachelor's degree in Computer Science or related field

Tools

C#/.NET

Git

CI/CD

Job description

Senior Back-End Developer (Platform) at Hercle

About The Company

Hercle is a fast-growing fintech building institutional-grade infrastructure that bridges fiat, stablecoins, and digital assets, enabling cross-border transactions at scale and in real time. Serving over 200 clients globally, Hercle provides banks, brokers, payment service providers, and fintechs with seamless solutions for cross-border payments, trading, and treasury management.

Working at Hercle

We’re a lean, ambitious team where everyone gets real responsibility from day one, with the freedom to move fast and the support to grow. You'll work at the intersection of global finance and digital assets, solving complex problems for some of the world's largest financial institutions. Hercle is a flat, collaborative environment where ideas matter more than titles. People here are self-starters who take initiative and help each other succeed. If you're curious, driven, and excited to shape how money moves globally, we’d love to meet you.

About The Role

We are looking for a talented and experienced C# Back-End Developer to join our engineering team. You will be responsible for designing, building, and maintaining the core back-end systems that power Hercle’s trading and infrastructure platforms. Your work will directly support mission-critical services that operate at high throughput and low latency in dynamic digital asset markets.

Key Responsibilities

• Design and develop high-performance, scalable, and reliable back-end systems using C#.
• Implement APIs, microservices, and real-time data pipelines that integrate with internal and external systems.
• Collaborate closely with trading, product, and infrastructure teams to understand requirements and deliver high-quality solutions.
• Optimize system performance and ensure stability in high-frequency, low-latency environments.
• Write clean, maintainable, and well-documented code, following industry best practices.
• Participate in code reviews and knowledge sharing across the development team.
• Proactively identify bottlenecks and bugs, and devise solutions to address them.
• Maintain and improve CI/CD pipelines and contribute to infrastructure automation.

Requirements

• Bachelor’s degree in Computer Science, Engineering, or related technical field.
• 5+ years of experience developing back-end systems in C#/.NET.
• Strong understanding of object-oriented programming, software design patterns, and distributed systems.
• Experience working with SQL and NoSQL databases.
• Solid understanding of concurrency, multithreading, and performance optimization.
• Familiarity with CI/CD, version control systems (e.g., Git), and testing frameworks.
• Excellent problem-solving skills and attention to detail.
• Comfortable in fast-paced environments and able to take ownership of deliverables.

Why Joining Hercle?

• Competitive salary.
• Career and personal growth opportunities.
• Flexible working arrangements (remote/hybrid).
• Collaborative and forward-thinking work environment.

If you're interested, feel free to reach out and send us your CV!

By submitting this application, I confirm that all the information given by me in this application for employment and any additional documents attached hereto are true to the best of my knowledge and that I have not wilfully suppressed any material fact. I confirm I have disclosed if applicable any previous employment with Hercle. I accept that if any of the information given by me in this application is in any way false or incorrect, my application may be rejected, any offer of employment may be withdrawn or my employment with Hercle may be terminated summarily or I may be dismissed. By submitting this application, I agree that my personal data will be processed in accordance with Hercle's Candidate Privacy Notice