Full Stack Engineer (Oil/Gas/Energy/Power Background)

Lorien; Greater London; Hybrid; GBP 111,000 - 166,000; Full time

Benefits offered by this job

Hybrid working

Job summary

Lorien in London is seeking a Senior Full Stack Developer to join a high-performing Front Office technology team within a leading global investment banking environment. The role focuses on mission-critical electronic trading platforms for FX and Fixed Income, delivering scalable, low-latency applications used by traders, sales teams and clients worldwide.

As a Senior Developer you will influence architecture, design and deployment across the full software lifecycle, modernising platforms,

Qualifications

• Extensive software development experience within enterprise environments.
• Strong experience with front-end and back-end tech including HTML5, CSS, Angular and C# / .NET or Java.
• Experience with real-time streaming data and low-latency systems.
• Knowledge of RxJS or Reactive Extensions.
• Experience in Agile/Scrum environments and TDD / automated testing.
• Experience in Front Office Trading / Investment Banking with FX or rates knowledge.
• Excellent communication and stakeholder engagement skills.

Responsibilities

• Design, develop and maintain high-performance front-office trading applications.
• Participate in an Agile SDLC with analysis, development, testing and documentation.
• Collaborate with product owners, traders and support teams.
• Contribute to architecture discussions and technology direction.
• Build and maintain backend services using .NET/C# or Java.
• Deliver real-time market data processing and low-latency solutions.
• Support platform modernization and migration initiatives.
• Mentor junior developers and conduct peer reviews.
• Assist in releases and production support.
• Drive improvements in development practices and tooling.

Skills

HTML5

CSS

Angular

C# / .NET

Java

Real-time data

RxJS

Reactive programming

Agile/Scrum

TDD

Automated testing

Front Office Banking experience

Low-latency systems

Pricing/Trading platforms

Job description

Senior Full Stack Developer (Front Office Trading)

6-Month Contract London / Hybrid Working Competitive Day Rate

The Opportunity

We are currently seeking an experienced Senior Full Stack Developer to join a high-performing Front Office technology team within a leading global investment banking environment.

You will play a key role in the development and enhancement of mission-critical electronic trading platforms supporting FX and Fixed Income products. Working within a globally distributed Agile team, you'll contribute to the evolution of a next-generation trading ecosystem, delivering scalable, high-performance applications used by traders, sales teams, and clients worldwide.

The Role

As a Senior Developer, you will be involved throughout the full software development lifecycle, contributing to architecture, design, development, testing, and deployment activities.

You'll work on a suite of front-office applications undergoing significant transformation, including platform modernisation, UI convergence, service modularisation, and scalability improvements to support future business growth.

Key Responsibilities

• Design, develop and maintain high-performance front-office trading applications.
• Participate in an Agile software development lifecycle including technical analysis, development, testing, code reviews and documentation.
• Collaborate closely with product owners, business stakeholders, developers and support teams.
• Contribute to architectural discussions and influence technology direction and best practices.
• Build and maintain backend services using .NET/C# or Java.
• Deliver scalable solutions capable of processing real-time market and trading data.
• Support platform modernisation, integration and migration initiatives.
• Create reference implementations and technical documentation.
• Conduct peer reviews and mentor less experienced developers.
• Work closely with production support teams during releases and ongoing maintenance.
• Drive continuous improvement across development practices, tooling, testing and delivery processes.

Required Skills & Experience

• Extensive software development experience within enterprise environments.
• Strong commercial experience with:
• HTML5
• CSS
• Angular or similar modern front-end frameworks
• Strong backend development experience with:
• C# / .NET
• OR Java
• Experience working with real-time and streaming data technologies.
• Knowledge of Reactive programming frameworks such as:
• RxJS
• Reactive Extensions
• Strong understanding of software engineering best practices, design patterns and architecture principles.
• Experience working in Agile/Scrum environments.
• Strong understanding of:
• Test-Driven Development (TDD)
• Automated testing practices
• Excellent communication and stakeholder engagement skills.
• Strong analytical and problem-solving capabilities.
• Front Office Investment Banking experience.
• FX, FX Options or Interest Rate product knowledge.
• Knowledge of real-time messaging and market data technologies.
• Application performance profiling and optimisation expertise.
• Experience designing low-latency, highly performant software solutions.
• Exposure to pricing, execution, trade capture or booking platforms.