23d ago

Senior Software Engineer - Frontend

PortugalPortugalRemotesenior
OtherSoftware EngineerEngineerSoftware Engineering
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Quick Summary

Key Responsibilities

Implement UX designs by working with UX Designers on a day-to-day basis, using React/Redux based framework. Build custom widgets for dashboards developed using Google Looker Studio plugins.

Requirements Summary

5+ years software development experience. React/Redux focus. Highly proficient in JavaScript and TypeScript. Experience in operational c

Technical Tools
OtherSoftware EngineerEngineerSoftware Engineering

Join us in bringing joy to customer experience.  Five9 is a leading provider of cloud contact center software, bringing the power of cloud innovation to customers worldwide.   

Living our values everyday results in our team-first culture and enables us to innovate, grow, and thrive while enjoying the journey together. We celebrate diversity and foster an inclusive environment, empowering our employees to be their authentic selves. 

Five9 has led the cloud revolution in contact centers, helping organisations transition from legacy premise-based solutions to the cloud. The cloud contact center market has become the hot space for innovation in real-time communications, and is the tip of the spear for the application of Artificial Intelligence, especially Generative AI and Large Language Models (LLM). Our innovative AI team is responsible for developing a suite of leading edge AI products built upon industry-leading AI tech from vendors like OpenAI, Google, and Amazon. These products include enterprise voice and chatbots (think: ChatGPT for businesses), agent assistance, and conversation analytics. This team - the fastest growing at Five9 - is seeking a talented and experienced Senior Front End React/Redux Software Engineer. In this role, you will be part of the team that builds software that brings AI technologies to users. Prior AI experience is not required - you will receive on-the-job experience for some of the hottest skills on the market. An ideal candidate for us is an experienced engineer who is passionate about building high performance web platforms and applications, a brilliant problem solver and a creative self-starter.

 

Responsibilities

~1 min read
  • →Implement UX designs by working with UX Designers on a day-to-day basis, using React/Redux based framework.
  • →Build custom widgets for dashboards developed using Google Looker Studio plugins.
  • →Be part of an agile team to develop a scalable, highly available application platform using modern PaaS platforms such as GCP.
  • →Participate and contribute to requirements analysis and grooming.
  • →Understand how to leverage PaaS components, such as CDN, noSQL databases when developing software in order to achieve scalability, reliability, and operability.
  • →Document and communicate clearly architecture and implementation solutions.
  • →Have ownership of your code in production, including on-call, troubleshooting.

 

  • 5+ years software development experience.
  • React/Redux focus.
  • Highly proficient in JavaScript and TypeScript.
  • Experience in operational code ownership – on-call, troubleshooting, uptime
  • Experience in applying modern UI design patterns and separating concerns in a distributed system.
  • Must have experience working within an Agile/Scrum team.
  • Positive, self-motivated and enthusiastic attitude with a strong sense of ownership.
  • Strong pro-active communication skills, both verbal and written.
  • Experience in contact center software is a plus but not required.
  • Experience with custom widget development using Google Looker Studio is a plus but not required.

What We Offer

~1 min read
✓Five9 Shares
✓Bonus Scheme
✓10% Flexi Benefit
✓Meal Allowance
✓Medical Insurance
✓Life Insurance
✓25 day Annual Leave + Public Holidays

Location & Eligibility

Where is the job
Portugal
Remote within one country
Who can apply
Open to applicants worldwide

Listing Details

Posted
September 18, 2026
First seen
September 19, 2026
Last seen
October 12, 2026

Posting Health

Days active
23
Repost count
0
Trust Level
39%
Scored at
October 12, 2026

Signal breakdown

freshnesssource trustcontent trustemployer trust

Five9 is a leading provider of cloud contact centre software.

Employees
3k+
Founded
2001
Domain
View company profile
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Senior Software Engineer - Frontend