At a Glance
- Tasks: Lead a critical upgrade project for legacy Ember applications in a remote setting.
- Company: Join a well-established financial services product business making impactful upgrades.
- Benefits: Enjoy fully remote work and the flexibility of a contract role outside IR35.
- Other info: Engagement lasts 2-3 months, starting on 21st July 2025.
- Why this job: Be part of a focused engineering team modernising essential applications with cutting-edge tech.
- Qualifications: 5 years of Ember.js experience and solid Node.js knowledge required.
- Location: Remote (UK)
- Duration: 2-3 months
- Start: 21st July 2025
- Engagement: Outside IR35
- 5 Years ember experience required (Minimum requirement)
The Opportunity
A well-established financial services product business is looking for a Senior Ember.js Engineer to lead a critical upgrade project across its legacy Ember applications. These applications are part of a wider FX payments back-office platform, with components that have not been updated in several versions and are now reliant on unsupported versions of Ember.js and Node.js.
This is a focused engineering engagement. You’ll work within a mono-repo ecosystem, modernising the codebase, resolving dependencies, and ensuring successful delivery of a clean, stable, and production-ready upgrade.
What is Required.
- Working closely with internal engineering leadership and DevOps support, you will:
- Upgrade Ember.js from ~v3.20.5 to Ember 6.x (Octane) .
- Upgrade Node.js to v20+ across all associated packages.
- Migrate and validate shared packages within a monorepo (Lerna/Yarn Workspaces).
- Run and maintain comprehensive test coverage (unit, integration, and UAT).
- Identify and deprecate outdated libraries and plugins.
- Optionally consolidate “common” and “domain-common” packages into a single repo (without impacting delivery timelines)
Tech Stack:
- Frontend : Ember.js (Octane), Glimmer, Handlebars
- Tooling : Lerna, Yarn Workspaces, ESLint, Prettier
- Testing : QUnit, qunit-dom, ember-qunit
- CI/CD : AWS Amplify
- Auth : Keycloak (OAuth2 integration)
- Languages : TypeScript, JavaScript
- Misc : Ember Engines, Babel, Sass, ember-auto-import, ember-fetc
Skill-Set
- Deep experience upgrading and maintaining Ember.js applications (ideally 3.x → 5.x/6.x).
- Solid grasp of Node.js environments and version migrations (especially v20+).
- Familiarity with monorepo structures , including Lerna and Yarn Workspaces.
- Experience working with Ember Engines and component libraries.
- Strong testing mindset – you’ve worked with QUnit or equivalent test runners in Ember.
- Good communicator – able to work autonomously and update stakeholders clearly.
Deliverables
- Technical Upgrade Plan
- Comprehensive Test Plan and Cases
- Clean builds and validated UAT release
- Post-upgrade performance and stability report
Contract Role: Senior Ember.js Engineer Outside IR35 Fully Remote in Norwich employer: Halian
Join a well-established financial services product business that values innovation and technical excellence, offering a fully remote work environment in the UK. As a Senior Ember.js Engineer, you'll be part of a collaborative culture that prioritises employee growth through challenging projects and modern technologies, while enjoying the flexibility of working outside IR35. This role not only allows you to lead critical upgrades but also provides an opportunity to enhance your skills in a supportive and dynamic setting.
StudySmarter Expert Advice🤫
We think this is how you could land Contract Role: Senior Ember.js Engineer Outside IR35 Fully Remote in Norwich
✨Tip Number 1
Familiarise yourself with the latest features and improvements in Ember.js, especially the transition from version 3.x to 6.x. This will not only help you during the interview but also demonstrate your commitment to staying updated with the technology.
✨Tip Number 2
Showcase your experience with monorepo structures like Lerna and Yarn Workspaces. Be prepared to discuss specific projects where you've successfully managed dependencies and upgrades within a mono-repo environment.
✨Tip Number 3
Highlight your testing mindset by discussing your experience with QUnit or similar test runners. Prepare examples of how you've implemented comprehensive test coverage in previous projects, as this is crucial for the role.
✨Tip Number 4
Emphasise your communication skills and ability to work autonomously. Be ready to provide examples of how you've effectively communicated project updates to stakeholders in past roles, as this will be key in collaborating with internal engineering leadership.
We think you need these skills to ace Contract Role: Senior Ember.js Engineer Outside IR35 Fully Remote in Norwich
Some tips for your application 🫡
Tailor Your CV:Make sure your CV highlights your experience with Ember.js, especially any upgrades you've managed. Include specific projects where you've worked with Node.js and monorepo structures like Lerna and Yarn Workspaces.
Craft a Strong Cover Letter:In your cover letter, emphasise your deep experience with upgrading Ember.js applications and your familiarity with the required tech stack. Mention your ability to work autonomously and communicate effectively with stakeholders.
Showcase Relevant Projects:If you have a portfolio or GitHub repository, include links to relevant projects that demonstrate your skills in upgrading Ember.js and working with Node.js. This will give the hiring team concrete examples of your capabilities.
Highlight Your Testing Experience:Since a strong testing mindset is crucial for this role, make sure to mention your experience with QUnit or similar test runners. Discuss how you've maintained comprehensive test coverage in past projects.
How to prepare for a job interview at Halian
✨Showcase Your Ember.js Expertise
Make sure to highlight your deep experience with upgrading and maintaining Ember.js applications, especially the transition from versions 3.x to 6.x. Be prepared to discuss specific challenges you've faced and how you overcame them.
✨Demonstrate Your Node.js Knowledge
Since the role requires solid grasp of Node.js environments, be ready to talk about your experience with version migrations, particularly to v20+. Share examples of how you've managed dependencies and resolved issues in past projects.
✨Familiarity with Monorepo Structures
Discuss your experience with monorepo structures, specifically using Lerna and Yarn Workspaces. Prepare to explain how you've effectively managed shared packages and any strategies you've used to streamline workflows.
✨Communicate Clearly and Effectively
As a good communicator, it's essential to demonstrate your ability to work autonomously while keeping stakeholders updated. Practice articulating your thoughts clearly and concisely, especially when discussing technical concepts.
