Senior Platform Engineer (C#/Python) - Remote

ABC Arbitrage SA; Île-de-France; Hybrid; EUR 80,000 - 120,000; Full time

Benefits offered by this job

Profit sharing

Remote up to 50%

Competitive package

Job summary

ABC Arbitrage SA is seeking an experienced Software Engineer to join our Core Platform team in Île-de-France. You will design and build core services in C#/.NET and maintain Python libraries that power our data and research ecosystem.

You will work across distributed computing, data infrastructure, messaging, and internal APIs, building tooling to improve developer productivity. A permanent contract with up to 50% remote work is offered.

Qualifications

• 5 to 8 years of professional software development experience.
• Strong software engineering fundamentals and ability to learn over language/framework.
• Experience building backend or systems software in languages such as C#, C++, Rust, Go or Java.
• Understanding of distributed systems, concurrency and software performance.
• Care about API design, clean abstractions and developer experience.
• Value code quality, automated testing, maintainability and backward compatibility.
• Ability to take ownership of a technical problem from design to production.
• Value code reviews and knowledge sharing.

Responsibilities

• Design and build core services, frameworks and libraries in C#/.NET.
• Design and maintain Python libraries, SDKs and integration layers.
• Work on distributed computing, data infrastructure, messaging and internal APIs.
• Build tools and abstractions to hide infrastructure complexity and boost productivity.
• Design APIs that provide a consistent experience across C# and Python.
• Address performance, security, reliability, scalability of systems.
• Collaborate with engineers to translate needs into reusable capabilities.
• Take ownership of topics from architecture to production.
• Investigate production issues and design sustainable fixes.
• Contribute to engineering standards and code reviews.

Skills

5-8 years exp

Distributed systems

API design

Backend development

Ownership

Learning mindset

Tools

C#

Python

C++

Rust

Go

Java

Job description

ABC Arbitrage SA is seeking an experienced Software Engineer to join our Core Platform team in Île-de-France. You will design and build core services in C#/.NET and maintain Python libraries that power our data and research ecosystem.

You will work across distributed computing, data infrastructure, messaging, and internal APIs, building tooling to improve developer productivity. A permanent contract with up to 50% remote work is offered.