Python Developer (Front Office) - Inside IR35 - Up to £700 per day

Hunter Bond; Greater London; Hybrid; GBP 77,000 - 129,000; Full time

Job summary

Hunter Bond is seeking an experienced Senior Full Stack Engineer to design, develop and support market data platforms within a Global Markets context. You will work on end-to-end solutions spanning front-end, backend, APIs and data layers in production-grade environments.

The role emphasizes Python backend and NoSQL data stores, with gRPC REST APIs, and collaboration with trading and data teams to deliver scalable, reliable analytics platforms.

Qualifications

• Experience designing and maintaining full-stack applications spanning UI, backend services, APIs and data layers.
• Strong background in market data platforms, data analytics and production-grade systems.
• Proficiency with Python and polyglot backend development is preferred.
• Hands-on experience with NoSQL databases (MongoDB, HBase) and distributed data stores.
• Experience building scalable, reliable APIs, including REST and gRPC.
• Strong debugging, analytical and problem-solving skills in production environments.

Responsibilities

• Design, develop and maintain full-stack applications spanning user interfaces, backend services, APIs and databases.
• Build and enhance market data platforms supporting analytics, data distribution and downstream consumption.
• Develop and integrate APIs and services using REST and gRPC.

Skills

Full stack engineering

Python

gRPC

NoSQL

MongoDB

HBase

REST APIs

Distributed systems

Debugging

Collaboration

Tools

MongoDB

HBase

gRPC

REST

Job description

Senior Full Stack Engineer – Market Data Platforms

Inside IR35 - Up to £700 per day

Hybrid in Central London

6-Month Initial Contract (3-Year Project Scope)

October Start possible!

Technologies: Python | gRPC | MongoDB | HBase

We are seeking an experienced Senior Full Stack Engineer to design, develop and support market data platforms within a Global Markets environment.

The role involves building end-to-end technology solutions across front-end applications, backend services, APIs and data layers. You will contribute to platforms that support critical market data analytics, distribution and consumption, ensuring solutions are scalable, performant and reliable in production-critical environments.

The ideal candidate will combine strong full-stack engineering capabilities with experience working with large datasets, distributed systems and market data technologies. You will collaborate closely with trading, analytics and data teams to translate complex business requirements into robust technical solutions.

Key Responsibilities

• Design, develop and maintain full-stack applications spanning user interfaces, backend services, APIs and databases.
• Build and enhance market data platforms supporting analytics, data distribution and downstream consumption.
• Develop and integrate APIs and services using technologies such as REST and gRPC.
• Work with large-scale NoSQL and distributed data stores, including MongoDB, HBase or similar technologies.
• Troubleshoot complex production issues, conduct root cause analysis (RCA) and drive resolutions through to completion.
• Translate business requirements into scalable, maintainable and practical technical solutions.
• Collaborate with Front Office trading, analytics, data and technology teams to deliver effective solutions.
• Identify opportunities to improve platform performance, scalability, reliability and overall engineering quality.
• Support integrations with analytics platforms and downstream systems.
• Contribute to the design and evolution of distributed systems and polyglot technology architectures.
• Strong full-stack development experience across front-end applications, backend APIs and data layers.
• Proficiency in Python or experience with polyglot backend development.
• Experience designing, building and consuming REST APIs and/or gRPC services.
• Hands-on experience with NoSQL databases such as MongoDB, HBase or equivalent distributed data stores.
• Strong debugging, analytical and problem-solving skills in production environments.
• Proven ability to take ownership of technical issues, from investigation and root cause analysis through to resolution.
• Experience developing data-intensive applications and working with large datasets.
• Strong communication and collaboration skills, with the ability to work effectively across business and technology teams.

Preferred Domain Experience

• Experience working within a Front Office trading or Global Markets environment, ideally covering Fixed Income, FX or Derivatives.
• Understanding of market data concepts, distribution and consumption.
• Knowledge of trade lifecycles and associated data flows.
• Awareness of how market data feeds into pricing, risk calculations and analytics.
• Experience with enterprise trading systems or market data platforms.
• Understanding of regulatory and compliance considerations within banking or financial services.

Technical & Data Expertise

• Databases: MongoDB, HBase or similar distributed data stores.
• Communication: gRPC and high-performance API services.
• Data modelling: Market data schemas, instrument data and metadata-heavy taxonomies, including FRTB-related structures.
• Integration: Connecting market data platforms with analytics and downstream systems.
• Architecture: Distributed systems and polyglot technology environments.
• Experience working with market data platforms or third-party market data vendor systems.
• Exposure to data streaming or real-time processing frameworks.
• Familiarity with cloud platforms or distributed infrastructure environments.
• Previous experience within global banking or financial services.

Experience Level

We anticipate candidates with approximately 9–15 years of professional experience, although this is flexible for individuals with particularly relevant technical expertise.