Senior Python Engineer

Radley James; New York (NY); On-site; USD 250,000 - 350,000; Full time

Job summary

Radley James is partnering with a leading financial technology organization in New York to hire a Senior Software Engineer specializing in Python. You will take a leading role designing high-performance, distributed backend systems supporting institutional trading, financing, and capital markets.

This senior IC position offers technical ownership, architectural influence, and opportunities to work on mission-critical platforms at the intersection of financial markets and cutting-edge

Qualifications

• 8+ years of professional software engineering experience in backend systems.
• Strong Python expertise for scalable applications.
• Experience in financial services and capital markets.
• Knowledge of trade processing and post-trade workflows.
• Design of distributed, high-throughput data-intensive apps.
• Proficiency with PostgreSQL.
• Experience with AWS and modern cloud infrastructure.
• Familiarity with Kafka or Snowflake.

Responsibilities

• Architect and develop highly scalable, distributed backend systems supporting institutional trading, financing and risk management.
• Build robust, high-performance Python services handling complex financial transactions and large volumes of market data.
• Design and optimise data processing pipelines supporting real-time financial analytics.
• Develop integrations with exchanges, trading platforms and external financial counterparties.
• Take technical ownership of core trading infrastructure, improving reliability, scalability and performance.
• Collaborate with quantitative researchers, trading teams and business stakeholders to deliver sophisticated financial technology solutions.
• Drive architectural decisions, establish engineering best practices and mentor other engineers.
• Ensure critical systems meet demanding production reliability, availability and performance standards.

Skills

Python

Distributed systems

AWS

Kafka

PostgreSQL

Snowflake

Financial services

Job description

Senior Software Engineer – Python | Capital Markets

Location: New York, NY

Compensation: Up to $350,000 Base + Performance Bonus + Benefits

Employment Type: Full-Time

The Opportunity

We're partnering with a leading financial technology organisation that is transforming the infrastructure behind institutional trading, financing and capital markets.

They're looking for an exceptional Senior Software Engineer to take a leading role in designing and developing high-performance, distributed systems supporting complex trading operations across traditional and digital asset classes.

This is a senior individual contributor opportunity offering significant technical ownership, architectural influence and the chance to work on mission-critical platforms at the intersection of financial markets and cutting-edge engineering.

You'll work alongside experienced engineers, quantitative researchers and financial markets specialists, tackling challenging problems involving trade processing, real-time data and large-scale financial infrastructure.

What You'll Be Doing

• Architect and develop highly scalable, distributed backend systems supporting institutional trading, financing and risk management.
• Build robust, high-performance Python services handling complex financial transactions and large volumes of market data.
• Design and optimise data processing pipelines supporting real-time financial analytics.
• Develop integrations with exchanges, trading platforms and external financial counterparties.
• Take technical ownership of core trading infrastructure, improving reliability, scalability and performance.
• Collaborate with quantitative researchers, trading teams and business stakeholders to deliver sophisticated financial technology solutions.
• Drive architectural decisions, establish engineering best practices and mentor other engineers.
• Ensure critical systems meet demanding production reliability, availability and performance standards.

What We're Looking For

• 8+ years of professional software engineering experience, with significant experience building production-grade backend systems.
• Strong expertise in Python, including designing and developing complex, scalable applications.
• Extensive experience within financial services, ideally investment banking, hedge funds, prime brokerage or institutional trading.
• Strong understanding of trade processing and the end-to-end trade lifecycle, particularly post-trade workflows.
• Proven ability to design distributed systems and high-throughput, data-intensive applications.
• Strong experience with relational databases, ideally PostgreSQL.
• Experience with AWS and modern cloud infrastructure.
• Familiarity with Kafka, Snowflake or similar data technologies.

Interested?

If you're a senior Python engineer with a strong background in capital markets, trading infrastructure or post-trade systems, we'd be keen to speak with you.