Lead Software Developer

Ncounter LTD; Greater London; On-site; GBP 70,000 - 90,000; Full time

Job summary

A global investment firm is seeking a Python-focused Software Developer to enhance their Post Trade engineering group. The role involves designing and delivering high-performance components to automate the entire post-trade workflow, ensuring accuracy and compliance. Candidates should have a strong background in software engineering with at least 5 years of experience in Python, along with experience in data-intensive services, PostgreSQL, and architecture design. This position offers the chance to work in a cutting-edge trading environment while taking ownership of critical production systems.

Qualifications

• 5 years of Python engineering experience in trading or post trade domains.
• Proven experience with data intensive services and databases.
• Ability to design scalable and high availability systems.

Responsibilities

• Design and deliver high-performance components for post-trade workflows.
• Own production systems and improve reliability.
• Shape architecture for advanced trading environments.

Skills

Python engineering

Data-intensive services

PostgreSQL

Distributed architectures

Debugging

Education

Strong Computer Science background

Tools

C++

Spark

Kafka

Job description

Software Developer Post-Trade Automation

Ncounter are supporting a globally recognised systematic investment firm in hiring a Python focused Software Developer to join their Post Trade engineering group. This team builds and operates the pipelines that sit at the heart of post trade processing, powering millions of transactions and ensuring accuracy, timeliness and compliance across global markets.

You will design and deliver high performance components that automate the full lifecycle of post trade workflows, from ingesting transaction feeds through to booking, enrichment, reconciliation and analytics. This is a hands on engineering role where you will own production systems, improve reliability, optimise data flows and help shape the architecture behind one of the most advanced trading environments in the industry.

The environment is deeply technical, collaborative and quality driven, with strong expectations around software engineering standards, data integrity, and scalable distributed design.

Core Requirements

• Strong Computer Science background with 5 years Python engineering in trading or post trade domains
• Proven experience building data intensive services and working with PostgreSQL and data frame tooling

Background in trade booking and FIX protocol integration

• Ability to design and implement scalable, high availability and distributed architectures
• Experience building reporting and reconciliation tooling and working with large transactional datasets
• Understanding of OTC products including CDS, Interest Rate Swaps and Variance Swaps

Highly Desirable

• Experience with C++, Spark, Kafka or other distributed compute tools
• Exposure to position keeping, risk, or PnL systems
• Strong debugging, profiling and optimisation capability across data pipelines

If you want to work at the intersection of software engineering, distributed systems and financial markets and enjoy taking ownership of critical production platforms, Ncounter would like to speak with you. Please get in touch for a confidential discussion.