workable

Senior Experience Engineer (FTC)

Callsign

London, GBR

Contract

Senior

Hybrid

Discovered 2 weeks ago

TypeScriptReactNodeJavaGitLab CI/CDHelm

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Full Job Posting

Frontend craft

Set the technical standard for the estate: your code is the reference.

Lead the response to performance, accessibility or security findings, and anticipate them at design time.

Full-stack

Own services and their delivery machinery end-to-end (GitLab pipelines, charts, GitOps, infrastructure)

Design API contracts consumers can live with long-term

Execute cross-repo changes (decommissions, migrations) safely across team boundaries

Lead design review for your surface, where their design docs are the reference alongside your code.

Quality

Own testing strategy for a surface, including the release regression cycle: coordinate it, keep it honest, and drives flake to zero rather than tolerating it.

Platform

Own platform programmes (package-manager and framework migrations, test-framework transitions, runtime upgrades) end-to-end the plan

Translate roadmaps into epics others can execute

Mentor junior team members

Requirements

Key Responsibilities
Ship across the stack: TypeScript/React frontends, Node services (with some Java in the portal estate), API contracts, GitLab CI/CD, and deployment via Helm, GitOps and Terraform.
Treat the frontend craft triad - accessibility, performance, security - as engineering, with expectations that rise as you grow.
Build with AI as a core part of your workflow, with the verification discipline a regulated product demands.
Learn the domain deliberately: fraud, identity, authentication, and our clients' operational world, because product decisions made without it are guesses.
Write meaningful tests for everything you ship.
Required Skills & Experience A must:
Solid JavaScript/TypeScript and React.
Comfort somewhere beyond the frontend: an API, a service, or infrastructure.
System design and architecture, designing features that span frontend, service and configuration.
Evidence of AI-native working with stated verification.
A testing instinct: you can design a test approach and defend it.
Has owned a product surface or platform programme including its worst weeks
Can architect a frontend estate live (state, contracts, testing, deployment)
Evidence of raising a team's standards
Demonstrable product judgement
Nice to have:
Java in production; design systems or component library work; SDK or library engineering
Data visualisation
Experience in regulated industries (fintech, identity, payments).

Benefits

Pension scheme with Scottish Widows
Private medical cover with Vitality
Life assurance (4x base salary)
Personal Learning & Development Budget
Cycle to Work Scheme
Company Family Leave
25 days annual leave plus Callsign Bank Holiday
Employee Volunteering Program

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