Back End Python Developer, Crypto Trading Systems

Aspire; City Of London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A proprietary trading firm in London is seeking a Back End Python Developer to enhance their crypto trading systems. Join a team dedicated to innovation and performance, where your skills in Python, APIs, and data management will drive success. Ideal candidates will bring 1-2 years of experience and a proactive approach to problem-solving.

Benefits

Autonomy and innovation

Impactful contributions

Agile team culture

Qualifications

• 1-2 years of hands-on experience with Python 3, especially with performance-focused libraries like NumPy.
• Familiarity with JIT compilers (e.g., Numba) and best practices in code management and testing.
• Experience working with APIs, Websockets, and deploying applications in Linux environments.

Responsibilities

• Develop and maintain high-performance trading systems using Python.
• Work on model deployment and order execution to trade reconciliation and exchange integration.
• Collaborate closely with a Senior Developer and contribute across the company.

Skills

Python 3

Performance-focused libraries (e.g., NumPy)

APIs

Websockets

Linux environments

Proactive mindset

Tools

JIT compilers (e.g., Numba)

SQL

C++

Job description

Back End Python Developer, Crypto Trading Systems

Are you ready to code at new heights with crypto trading?

A lean, high-performing proprietary trading firm is on the hunt for a Back End Python Developer to help build and evolve the systems that power their algorithmic trading strategies. This is a rare opportunity to join a tight-knit team of elite technologists who thrive on automation, data, and performance.

What You'll Be Doing:

• Develop and maintain high-performance trading systems using Python.
• Work on everything from model deployment and order execution to trade reconciliation and exchange integration.
• Collaborate closely with a Senior Developer and contribute across the company, from research tooling to data processing pipelines.
• Solve complex problems in an Agile, data-driven environment.

What You'll Bring:

• 1-2 years of hands-on experience with Python 3, especially with performance-focused libraries like NumPy.
• Familiarity with JIT compilers (e.g., Numba) and best practices in code management and testing.
• Experience working with APIs, Websockets, and deploying applications in Linux environments.
• A proactive mindset and the ability to tackle challenges across multiple domains.

Bonus Points For:

• Experience with SQL or other databases.
• Knowledge of lower-level languages like C++.

Why You'll Love It:

• Work with a company that's been successfully trading crypto for over 6 years.
• Be part of a small, agile team where your contributions have real impact.
• Enjoy a culture of autonomy, innovation, and deep technical focus.

We Are Aspire Ltd are a Disability Confident Committed employer.