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Allegis Global Solutions

Back End Developer

Hybrid

London, United kingdom

Mid level

Freelance

19-12-2025

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Skills

Java CI/CD DevOps Docker Test Problem-solving Programming Team Spirit Agile Spring

Job Specifications

Location: London, UK

Industry: Investment Banking

We’re looking for an experienced Backend Developer to join a leading investment bank and help drive innovation that empowers people and businesses across Asia, Africa, and the Middle East. This role is part of the Blade function, delivering strategic initiatives that make a real impact. Prior banking experience is highly desirable.

The Key Responsibilities

As a senior developer, you’ll be driving our platform forwards and delivering quality solutions to business-critical customer requirements. Based in London, you will collaborate in a dynamic global team with fellow technologists, business analysts, project managers and business stakeholders across multiple locations.

Key Attributes

An excellent Java developer with good software design principles and the ability to write robust code and accompanying test suites
Ability to write efficient, clear code and be able to articulate what has been implemented and why
Self-starter who can drive/facilitate requirements and development effort
Take ownership and responsibility for the full development lifecycle
Experience working in an agile development environment
A team player, capable of engaging with other teams
Experience in the end-to-end design, development and support of financial markets systems
Experience with real-time (event-driven) architectures
Being a full-stack web developer is a plus

Technical skills:

5+ years hands on development with investment banking IT experience
Core Java (essential), Concurrency, Spring
RX Java is a plus
Experience in micro-services and container technologies (preferably Docker) is a plus
Familiarity with CI/CD and DevOps
Experience with distributed data stores a plus
Functional programming experience a plus

Functional skills:

Financial Market domain knowledge
Investment banking is a strong plus
Derivatives knowledge is a plus
e-trading technology experience is a plus

Soft skills:

Fluent in English (speaking and writing)
Strong ownership and ability to deal with ambiguity
Outstanding problem-solving skills
Proactive, self-starter, autonomous
Good team spirit

Rate: GBP 600 - 650/day (negotiable)

PAYE inside IR35 (Annual leave: 38 days including Bank Holidays + 3% Pension + 15% Employees NI)

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