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Allegis Global Solutions

Java Developer

On site

London, United kingdom

Senior

Freelance

09-10-2025

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Skills

Java TypeScript SQL Cassandra CI/CD DevOps Docker Kubernetes Azure DevOps Product Knowledge Architecture Databases Azure react JS Spring Redux Spring Boot CI/CD Pipelines OpenShift Kafka

Job Specifications

Java Developer - Investment Banking
Rate: PS750/day PAYE (Equiv. to PS1,040 Umbrella)
Contract: 2+ years project (extensions)
Location: London, UK
Flexi: Mostly remote (once a week onsite)
Core skills:
Java, Spring Boot & RX Java
Financial markets domain knowledge
(Nice to have) Web UI technologies incl. JS, React, Redux, Webpack
About the Team
FM Digital Channels is a global team driven to provide world class technology in support of the bank's Financial Markets business. Our projects is centrered around the bank's strategic, in-house built pricing, execution, and trade processing platform. We bring a deep understanding of the domain, a scientific approach, and innovative solutions to bear on the challenges of best servicing our customers in a highly competitive environment. This is a rare opportunity to join international team of smart technologists serving global business in the financial market's domain. The culture in the team is open, intellectual, and fun. Learning opportunities are plentiful and career advancement is always waiting for those high-energized talents willing and able to step up.
The Key Responsibilities
As a senior developer, you'll be joining a local development team, responsible for driving forwards the specific aspect of our global platform, and delivering quality solutions to business-critical customer requirements. Based in London, your team will collaborate in a dynamic global organisation, with fellow engineers, business analysts, project managers and business stakeholders across multiple locations. You will be expected to quickly learn existing design and coding patterns, consistently apply and collaboratively evolve them while delivering increasingly complex and exciting projects for our customers.
Participate in all stages of delivery - from requirements gathering to post-release customer support,
Build new functionality, carefully ensuring adherence to existing coding patterns,
Own and collaborate on technical design,
Break large projects into tasks, delegate them to other developers, own and coordinate the consolidated delivery of the solution,
Coach others to minimise the amount of review iterations for their deliveries,
Develop yourself towards the goal of becoming a senior full-stack developer.
The Key Requirements
Technical skills:
Versatile Java developer with good software design principles,
With 7+ years of relevant experience,
Expert in Core Java, Spring Framework, RX Java, REST, Reactive Web Services,
Experienced in micro-services and container technologies, eg Kubernetes, OpenShift, Helm, Docker,
Familiar with CI/CD pipelines, eg Azure DevOps,
Experience with SQL databases and other distributed data stores, eg Cassandra and Hazelcast,
Experience with messaging technologies, eg Kafka and Solace,
Good knowledge of design patterns and best practices,
Able to design the solution to complex and/or ambiguous business problem that may require changes in existing architecture or frameworks,
Writing efficient, clear, well-tested code, and able to articulate what was built and why,
Built complex, Real Time (event-driven), transactional applications,
Optimized performance of latency sensitive systems,
Delivered features across full stack,
Preferably with React & TypeScript as Front End technology stack.
Functional skills:
Financial Market domain knowledge, preferably investment banking,
Derivatives product knowledge,
e-trading technology experience.
Soft skills:
Good team player, but able to deliver autonomously when required,
Effective communicator, fluent in English (speaking and writing),
Experienced in driving requirements and development efforts,
Experienced in the end-to-end design, development and support complex systems.
Proactive self-starter, keen problem solver,
With strong sense of ownership and ability to deal with ambiguity.
Thanks for considering us!

About the Company

At Allegis Global Solutions (AGS), we're in the human enterprise business. We help companies all over the world transform their people into a competitive advantage. It's not about filling seats. It's about designing workforces to meet missions. With services in 100+ countries, we have a point of view on the future of work that enables us to be a transformative partner in the way work gets done for our clients' organizations. Our Run, Grow, Transform operating philosophy meets clients where they are at on their individual wor... Know more