Junior Software Engineer (Java / Kotlin / JVM)

Junior Software Engineer (Java / Kotlin / JVM)

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Contract Overview

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Role: Junior Software Engineer (Java/ Kotlin/ JVM)

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Location: Victoria, London

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Length: 12 months

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Start: ASAP

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Rate: £200 per day

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Status: Inside IR35

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Pattern: Hybrid working

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About the Role

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I'm currently recruiting for a Junior Software Engineer to join a digital product team working across modern financial services technology.

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This role would suit someone with a few years' commercial software engineering experience, particularly across Java, Kotlin and JVM-based backend development. The successful candidate will be working on modern applications and services that support customer-facing digital products, with a focus on clean code, APIs, service-based architecture and production-quality software delivery.

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Experience within digital banking, fintech, financial services or insurance would be beneficial, although the main priority is strong backend engineering capability and a genuine interest in building reliable, scalable applications.

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Client

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The client is a leading global financial services organisation with a major digital technology function. The team is responsible for building and supporting customer-facing digital products used at scale, with a strong focus on modern engineering, secure platforms, API-led development and high-quality customer experiences.

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Key Responsibilities

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* Build, maintain and improve backend services using Java, Kotlin and JVM technologies

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* Work across the full software delivery lifecycle, from design and development through to testing, deployment and production support

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* Develop and integrate APIs that support customer-facing digital products and internal platforms

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* Contribute to both greenfield and brownfield development projects

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* Participate in code reviews, technical discussions and system design conversations

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* Work closely with product, engineering and wider technology teams to refine requirements and deliver new features

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* Write clean, maintainable and well-tested code

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* Support live applications and help ensure performance, reliability and quality in production environments

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* Use modern engineering practices, including source control, CI/CD, automated testing and monitoring

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Skills and Experience

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* A few years' commercial experience in software engineering

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* Strong hands-on experience with Java, Kotlin and JVM-based backend development

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* Understanding of service-based architecture and API-led development

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* Experience working with live applications and production environments

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* Good understanding of computer science fundamentals, data structures and software design principles

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* Experience with software testing, including unit testing and integration testing

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* Experience working with databases such as PostgreSQL, MongoDB or Redis

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* Familiarity with Git and source code control platforms such as GitHub, Bitbucket or GitLab

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* Experience working in Agile or Scrum environments

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* Good communication skills and the ability to work collaboratively across technical and non-technical teams

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Useful Technical Experience

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* Kotlin

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* Java

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* JVM

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* Ktor or Spring

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* REST APIs

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* PostgreSQL

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* MongoDB

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* Redis

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* GitHub Actions or other CI/CD tools

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* Docker

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* Kubernetes

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* AWS, GCP or Azure

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* Monitoring and logging tools such as CloudWatch, Prometheus, OpenSearch or Elasticsearch

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* Jira, Trello or similar delivery tools

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Desirable Experience

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* Experience or interest in AI tools and how they can support software development

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* Experience using tools such as GitHub Copilot, Devin or similar AI-assisted development tools

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* Ability to review, challenge, correct and improve AI-generated code or technical output

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* Experience in digital banking, fintech, financial services or insurance

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* Full stack experience, particularly with React or modern web technologies

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* Cloud deployment or container orchestration experience

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* A curious, adaptable and problem-solving mindset

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Important Information

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No visa sponsorship available. Candidates must already have the right to work in the UK.

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Salt contact

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Robert Sprigens, Senior Consultant -

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*Rates depend on experience and client requirements