Senior Frontend Software Engineer (React)

We are the Intelligent Internet Platform. We connect People, Places and Things anywhere, managing Internet Performance better than anyone else, while providing One Global Experience, giving Visibility, Control and Security through expereoOne.

Expereo believes in the power of Internet connectivity. As the world's largest provider of managed internet, SD-WAN/SASE, and Cloud connectivity solutions, we power enterprises and government sites worldwide, helping to enhance every business' productivity with flexible and optimal Internet performance.

As a trusted partner of Fortune 500 enterprises and carriers, our continued aim and success in helping both our customers and partners depends solely on the talented individuals that make Expereo a dynamic, effective, multicultural, and equitable environment.

About the role

We are building a new Digital Office to accelerate Expereo’s transformation through the Single‑Threaded Owner (STO) model. As a Software Engineer (Front End) in either the Commercial XP or In‑Life XP STO, you will be part of a full‑stack, outcome‑driven squad focused on delivering intuitive, performant, scalable digital experiences.

You will design and implement modern front‑end applications, shared UI components, and frameworks that support automation, observability, and a fully programmable platform. This role is ideal for engineers who thrive in impact‑driven, cross‑functional teams and enjoy building elegant user experiences backed by solid engineering rigor.

Key Responsibilities

Front‑End Application Development

Build and maintain dynamic, responsive web applications using modern front‑end frameworks (e.g., React, Vue, Angular).

Develop reusable UI components, design systems, and cross‑STO shared libraries.

Integrate front‑end applications with internal/external APIs and platform services.

Performance, Quality & Reliability

Ensure front‑end applications meet the highest standards of performance, accessibility, and security.

Implement automated testing across unit, integration, and end‑to‑end layers.

Build observability into user‑facing applications, enabling proactive monitoring and rapid issue resolution.

Automation & Standardization

Promote consistent coding patterns and architectural standards across squads.

Contribute to CI/CD pipelines for front‑end delivery, including build optimization and automated quality gates.

Drive improvements that reduce manual processes and accelerate release cycles.

Facilitating Innovation

Support Partner with designers, architects, and back‑end engineers to explore new product capabilities.

Support initiatives like agentic AI enablement, data‑driven UX, and programmable network experiences.

Contribute to reference implementations and front‑end engineering guardrails.

Requirements

Must Have

Strong proficiency with JavaScript and TypeScript.

Experience with modern frameworks such as React, Vue, or Angular.

Understanding of component‑based architecture and state‑management patterns (Redux, Zustand, Vuex, etc.).

Experience integrating with REST APIs, GraphQL and microservices.

Familiarity with front‑end build tools (Vite, Babel,..) and CI/CD pipelines.

Familiarity with css frontends (Tailwind, Bulma, ...)

Knowledge of automated testing frameworks (Jest, Cypress, Playwright).

Understanding of accessibility (WCAG), UI performance tuning, and responsive design.

Nice to have

Exposure to agentic AI Experience with design systems or component libraries (Storybook, MUI, Chakra).

Exposure to agentic AI concepts or data‑driven UI architectures.

Familiarity with AI Agents and tools (Cursor, Claude Code, Codex)

Familiarity with programmable networks or observability tooling.

Experience with low‑code platforms (Mendix, Salesforce).

Understanding of security best practices in the front‑end (content security policy, dependency scanning, RBAC patterns).

Mindset

Builder mentality with strong ownership.

Code-first, automation-first approach.

A full-stack learning approach to ensure team resilience.

Benefits

What We Offer

• A dynamic, international work environment with growth opportunities
• Exposure to cutting-edge technologies and large-scale global networks
• Learning and development support to build your career in product management
• Competitive compensation and benefits

Private Healthcare Plan

Pension Plan

• Hybrid working
• 25 days Holiday

Beyond the Job

We’re proud of our focus on Environment, Social and Governance as well as the passion we display for the communities where we live and work.

EEO (Equal Employments Opportunities) Statement

Expereo is an Equal Opportunities employer who aims to support and celebrate every employee that comes through our doors. We respect and support all of our people regardless of background, religion, nationality, sexual orientation, age, or physical condition.

Visit website

Expereo is a Manage Network as a Services company that connects people, places and things anywhere. We empower global companies to be future-ready. Meeting the business demands of today and accelerating performance and growth for tomorrow. We deliver secure, global network connectivity to enterprise and government sites in over 190 countries, providing a global service that delivers what a network needs – from design and deployment, to management. Our offices are located across the globe in the Netherlands, the United Kingdom, Poland, United States, Singapore, Philippines, United Arab Emirates, Argentina, Brazil, and Spain.