Frontend Developer

Icon Solutions; Greater London; On-site; GBP 70,000 - 90,000; Full time

Job summary

Icon Solutions is seeking an experienced Frontend Software Engineer to build new product modules and enhance the internal UI dashboarding toolkit used by clients. You will work on high-fidelity prototypes, design systems, and production-grade code.

You will apply TypeScript, Web standards, and UX principles, while collaborating with teams across PMs, BAs, and backend services built on Java/Spring. A strong emphasis on security, CI/CD, and agile delivery will shape your contributions.

Qualifications

• Experience frontend or full-stack engineer with TypeScript and web standards.
• Strong knowledge of OWASP Top 10 and API security principles.
• Understanding of REST, contracts, versioning, pagination, idempotency, and OAuth/SAML/JWT/RBAC.
• Awareness of software supply-chain hygiene and twelve-factor app principles.
• Proficiency in Java and Spring Boot for backend service inspection.
• Experience with CI/CD, Git and signed-commit workflows.
• Familiarity with Agile delivery using Jira and Confluence.
• Clear written communication and proactive ownership.

Responsibilities

• Run discovery with BAs and PMs to capture personas and requirements.
• Design and build high-fidelity prototypes on realistic data.
• Develop and evolve a design system with WCAG AA compliance and Storybook.
• Make design decisions using established UX principles amid conflicting requirements.
• Deliver production quality code with test-first approaches (TDD/BDD).
• Secure APIs that UI tools depend on, with proper authorization and scoping.
• Contribute to architecture, design decisions, and technical discussions.
• Support cutting-edge agentic UX design beyond basic interfaces.
• Collaborate with teams using Spring framework and related technologies.
• Push to a Node repository and manage asynchronous requests and real-time messaging.
• Support DevOps in highly transactional environments; work with Docker/Kubernetes.

Skills

TypeScript

Front-end development

UX laws

OWASP Top 10 / API Security

REST / API concepts

OAuth / SAML / JWT / RBAC

Software supply-chain hygiene

Twelve-factor principles

Java

Spring Boot

CI/CD

Git

Storybook

Jira

Confluence

Docker

Kubernetes

Unix scripting

MongoDB

Tools

Java

Spring Boot

CI/CD

Git

Storybook

Jira

Confluence

Docker

Kubernetes

Unix scripting

MongoDB

Job description

The Icon Payments Framework (IPF) provides institutions with faster and more cost-effective access to payments through an advanced and highly flexible payments specific platform which seamlessly integrates with core and back-office banking applications.

This is an exciting opportunity for an experienced Frontend Software Engineer to work on unique product platform. The role will require working and creating new product modules as well as working on the UI dashboarding toolkit used internally and by clients.

About You

• Experienced frontend or full-stack Engineer, with strong TypeScript and web standards.
• Working knowledge of the 12 UX laws (such as Hick's, Fitts's, Miller's and Jakob's) and when one outweighs another.
• Strong understanding of OWASP: the Top 10, the API Security Top 10 and ASVS.
• Strong understanding of API principles: REST, contracts and versioning, pagination, idempotency, error handling and least-privilege (OAuth, SAML, JWT, RBAC).
• Awareness of software supply-chain hygiene.
• Familiarity with twelve-factor principles for containerised services.
• Java and Spring Boot skills sufficient to read and change the services behind the UI.
• Experience with CI/CD, Git and signed-commit workflows.
• Agile delivery experience using Jira and Confluence.
• Clear written communication, and a self-starter who takes ownership.

What Do Our Frontend Engineers Do?

• Run discovery with BAs and PMs, and capture personas, user stories and stack-neutral requirements.
• Design and build high-fidelity prototypes on realistic data.
• Found and evolve a multiple design system: WCAG AA accessibility and Storybook.
• Make and justify design decisions using established UX principles, including choosing between conflicting ones.
• Deliver production quality code
• Work test-first where it applies, using TDD and BDD.
• Design, review and secure the APIs these tools depend on, including granular authorisation and scoping.
• Contribute to architecture, design decisions and technical discussions.
• Cutting edge agentic UX design, not just web interfaces.
• Experience with the Spring framework and technologies
• Experience of pushing to a node repository
• Good understanding of asynchronous request handling and partial page updates.
• Automation environment provisioning using Ansible
• Previous experience with real-time messaging systems
• DevOps experience gained within highly transactional software environments
• Knowledge and/or experience of Docker and Kubernetes
• Knowledge of Unix sys admin and scripting
• Knowledge of document-based data stories e.g. MongoDB