01
TRCI-26-04884
Senior Front-End Developer (React/TypeScript)
Contract role in Paris (occasional remote) for a senior front-end engineer to design, evolve and maintain complex React web interfaces. The focus is advanced React with TypeScript, strong Redux state architecture including async side-effects, and performance/scalability work (Core Web Vitals, caching, CDN). The engineer will integrate REST/GraphQL APIs, contribute to CI/CD industrialization (Git, Jenkins), and implement automated unit/integration testing. Agile (Scrum/Kanban) collaboration is expected; experience with accessibility and Design Systems is valued, and media/video streaming exposure is a plus.
Position summary
- Location
- France
- Workplace
- On-site
- Employment
- Contract
- Experience
- Minimum 4 years and Maximum 10 years
Role overview
Why This Role Matters.
Contract role in Paris (occasional remote) for a senior front-end engineer to design, evolve and maintain complex React web interfaces. The focus is advanced React with TypeScript, strong Redux state architecture including async side-effects, and performance/scalability work (Core Web Vitals, caching, CDN). The engineer will integrate REST/GraphQL APIs, contribute to CI/CD industrialization (Git, Jenkins), and implement automated unit/integration testing. Agile (Scrum/Kanban) collaboration is expected; experience with accessibility and Design Systems is valued, and media/video streaming exposure is a plus.
Your Impact
Deliver Enterprise Value
Help organisations solve complex business problems through modern technology, consulting expertise and measurable outcomes.
Collaboration
Work Across Teams
Collaborate with consultants, architects, engineers and client stakeholders throughout the project lifecycle.
Growth
Learn Continuously
Gain exposure to enterprise technologies, certifications, mentoring and real-world project experience.
Career Path
Grow With Ubique
Build a long-term consulting career with opportunities to take on greater responsibility and leadership over time.
Responsibilities
What You'll Be Doing.
Every role at Ubique contributes directly to solving meaningful business challenges for our clients.
02
Define and optimize the state management architecture with Redux and asynchronous effects management.
03
Ensure code that is modular, reusable, documented, maintainable, and compliant with front-end best practices.
04
Improve application performance by leveraging Core Web Vitals, caching, and CDN optimization.
05
Integrate and secure REST and GraphQL API consumption.
06
Contribute to developments associated with MongoDB and Elasticsearch when functional and technical needs require it.
07
Implement or strengthen Git and Jenkins pipelines and CI/CD processes.
08
Define and automate a unit testing and integration strategy to secure deliveries.
09
Participate in Agile Scrum or Kanban rituals and practices and formalize architecture choices.
10
Contribute to the improvement of digital accessibility and the structuring of a Design System.
11
Provide, where relevant, expertise related to media platforms and video streaming.
12
Use Jira and Confluence for project tracking, documentation, and collaboration.
Technology stack
Tools & Technologies.
The platforms and technologies you'll use to build modern, enterprise-grade solutions.
01
React
Required
02
React.js
Required
03
TypeScript
Required
04
Redux
Required
05
Hooks
Required
06
Context API
Required
07
Core Web Vitals
Required
08
performance
Required
09
caching
Required
10
CDN
Required
11
REST
Required
12
GraphQL
Required
13
MongoDB
Required
14
Elasticsearch
Required
15
Git
Required
16
Jenkins
Required
17
CI/CD
Required
18
unit testing
Required
19
integration testing
Required
20
Agile
Required
Requirements
Skills & Experience.
We value curiosity, collaboration and continuous learning. If you don't meet every requirement but believe you can make an impact, we'd still love to hear from you.
Essential
Required Qualifications
React.js
TypeScript
Redux (state management architecture)
Asynchronous side-effects management with Redux (e.g., thunks/sagas/observables)
React Hooks
React Context API
Front-end performance optimization (Core Web Vitals)
Caching strategies
CDN optimization
REST API integration
GraphQL API integration
Git
Jenkins
CI/CD pipelines
Automated unit testing
Integration testing
Agile Scrum or Kanban
Technical documentation / knowledge transfer
Preferred
Nice to Have
Design System contribution
Web accessibility (a11y)
Media platforms / video streaming experience
Jira
Confluence
MongoDB (environment understanding / contributions when needed)
Elasticsearch (environment understanding / contributions when needed)
What you'll gain
More Than Just A Job.
We're committed to helping every team member grow professionally, personally and technically while working on meaningful projects.
Global Exposure
Collaborate with international clients and multicultural teams on enterprise programmes.
Continuous Learning
Expand your expertise through mentoring, certifications and hands-on project experience.
Career Growth
Take ownership, develop leadership skills and grow your consulting career over time.
Flexible Working
Hybrid and remote collaboration designed around trust and delivering exceptional outcomes.
People First
Join a supportive culture where collaboration, respect and long-term relationships come first.
Enterprise Projects
Work on meaningful technology initiatives for leading organisations across industries.
Apply
Apply for Senior Front-End Developer (React/TypeScript)
One page, about two minutes. We only ask for what we actually need to have a first conversation.