---
title: 'Senior Quality Engineer at Five9'
canonical: 'https://feeny.ai/job/senior-quality-engineer-five9-porto-x1h2xeyp0y6v'
type: 'job'
last_seen: '2026-11-05'
---

# Senior Quality Engineer at Five9

- **Company:** Five9
- **Location:** Porto, Portugal
- **Work type:** hybrid
- **Posted:** 2026-11-03
- **Last confirmed live:** 2026-11-05
- **Apply:** https://www.five9.com/about/careers/job-detail?gh_jid=6241789004

## Job description

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.

## About the role

As a Senior Quality Engineer, you’ll join the Core Software Quality Engineering organization and help ensure every Five9 release is reliable. You’ll work in a delivery team that owns an end-to-end, complex backend solution. You’ll build and maintain automated tests for our web frontend and REST APIs, and help modernize the Python-based framework behind them.

## What you’ll do

- Design, write, and maintain end-to-end automated tests for the Five9 Virtual Contact Center application as part of a delivery team.
- Analyze test results using framework and product logs, and investigate failures down to root cause.
- Extend and support the Python automation framework, and build internal tools that make testing faster and more reliable.
- Modernize the framework by improving CI/CD integration, parallel execution, and stability, and by reducing flaky tests.
- Identify weak points in existing automated flows, fix them, and track their efficiency over time.
- Partner with Development, DevOps, and TechOps to align automation priorities with company strategy.
- Take part in Agile ceremonies (stand-ups, sprint planning, Increment planning) and contribute ideas that improve our tools and processes.

## What you bring

- 5+ years of experience in test automation roles, with a track record of owning framework design or technical decisions.
- Hands-on experience with Python 3 (other OOP languages are a plus).
- Solid knowledge of programming techniques and algorithms, including OOP and multithreading.
- Experience automating REST APIs and/or SDK-type interfaces (Python, Java, C++, etc.).
- Strong Linux skills.
- Solid understanding of the software development lifecycle and testing methodologies.
- Experience with version control and issue tracking (Git, JIRA).
- Strong analytical and troubleshooting skills, and a collaborative approach to working across teams.

## Nice to have

- Experience with Selenium.
- Experience designing or extending test automation frameworks (pytest, Robot Framework, or custom).
- Familiarity with CI/CD tools (Jenkins, GitLab CI, GitHub Actions).
- Experience with Docker, Kubernetes, or cloud environments (AWS/GCP).
- Knowledge of contact center, telephony, or CCaaS technologies (WebRTC, SIP, CTI).
- Experience mentoring other engineers.

Workplace location: This role is fully remote for candidates who reside outside Porto, Maia, Matosinhos, Gondomar, Valongo e Vila Nova de Gaia.  Candidates who reside within those municipalities would be required to work in-office 3 days a week.

Benefits:

- Five9 Shares
- Bonus Scheme
- 10% Flex Benefit
- Meal Allowance
- Medical Insurance
- Life Insurance
- 25 day Annual Leave + Public Holidays

Five9 embraces diversity and is committed to building a team that represents a variety of backgrounds, perspectives, and skills.  The more inclusive we are, the better we are.  Five9 is an equal opportunity employer.

Five9 is committed to providing reasonable accommodations for qualified individuals with disabilities throughout the application and interview process. If you need assistance or an accommodation due to a disability, please contact us at accommodations@five9.com to request an accommodation. Requests will be handled confidentially and in accordance with applicable law.

View our privacy policy, including our privacy notice to California residents here: https://www.five9.com/pt-pt/legal.

Note: Five9 will never request that an applicant send money as a prerequisite for commencing employment with Five9.

## About Five9

## Company Overview
- **One-liner**: Five9 provides a leading cloud contact center platform (CCaaS) that enables organizations to deliver digital engagement, analytics, workforce optimization, and AI-powered customer experiences.
- **Entity Type**: Public (NASDAQ: FIVN)
- **Headquarters**: San Ramon, California, USA (with additional offices in San Francisco, Toronto, London, Munich, Porto, Madrid, São Paulo, and Mandaluyong City)
- **Founded**: 2001
- **Founders**: Not publicly available

## Core Business
- **Primary industry/industries**: Cloud Contact Center as a Service (CCaaS), Customer Experience (CX) software, AI & Automation, Workforce Optimization
- **Target customers**: Enterprise, mid-market, and SMB organizations across all verticals (B2B/B2C)
- **Mission or purpose statement**: “Our vision is to make customer service a more human experience.” [five9.com](https://www.five9.com/about)

## Products & Services
- **Five9 Cloud Contact Center Platform**: Core omnichannel contact center solution (voice, email, chat, SMS, social) with intelligent routing and IVR.
- **Digital Engagement**: Integrated digital channels including SMS, web chat, email, and social messaging.
- **Five9 Analytics**: Real-time and historical reporting, speech analytics, and sentiment analysis to improve agent performance and customer outcomes.
- **Workforce Optimization (WFO)**: Workforce management, quality management, and recording (acquired Virtual Observer in 2021).
- **AI & Automation Suite**:
  - **Intelligent Virtual Agent (IVA)**: Conversational AI chatbot and voice bot for self-service (acquired Inference Solutions in 2021).
  - **Agent Assist 2.0**: AI-powered real-time agent guidance and summarization (using OpenAI).
  - **Voice AI Agents**: Generative AI agents for automated customer interactions.
- **Professional Services**: Implementation, integration, and consulting services.
- **Aceyus VUE**: Data and reporting integration platform (acquired in 2022).

## Market Standing
- **Valuation/Market Cap**: Publicly traded; specific metrics not provided in available sources.
- **Key Metric**: Over 3,000 customers worldwide; 350,000+ agents using the platform; 2,600+ employees; 1,450+ technology and channel partners. [five9.com](https://www.five9.com/about)
- **Notable Investors/Partners**: BT (expanded partnership for cloud adoption), MCM Telecom, XTT Mexico; partners include global SIs and technology vendors. Acquisitions: Acqueon, Aceyus VUE, Inference Solutions, Virtual Observer.
- **Growth Signals**: Named a Leader in the 2025 Gartner® Magic Quadrant™ for CCaaS (8th time); opened new European engineering hub in Porto, Portugal; expanded LATAM partnerships; introduced Agent Assist 2.0 with AI Summary; won Glassdoor Employees’ Choice Award for Best Places to Work (2022). [five9.com](https://www.five9.com/about)

## Competitive Advantages
- **Cloud-native heritage**: Born in the cloud in 2001, with 20+ years of CCaaS experience.
- **Analyst recognition**: Consistently named a Leader in Gartner Magic Quadrant, Forrester Wave, IDC MarketScape, and Aragon Research Globe.
- **High customer satisfaction**: 86 Net Promoter Score (NPS) for professional services.
- **Comprehensive AI portfolio**: Integrated IVA, Agent Assist, and Voice AI Agents differentiate from competitors.
- **Scale and reliability**: Manages billions of call minutes annually across 2,600+ concurrent agent seats (average).

## Strategic Focus
- **AI-first innovation**: Continued investment in generative AI and conversational AI to automate and enhance customer interactions.
- **Global expansion**: Strengthening presence in LATAM (new partnerships), EMEA (engineering hub in Portugal), and APAC.
- **Platform depth**: Integrating acquisitions (Acqueon, Aceyus, Inference Solutions) to provide end-to-end CX and WFO capabilities.
- **Partner ecosystem**: Deepening relationships with systems integrators and telcos (e.g., BT) to accelerate cloud migration.

## Why Work Here
- **Culture**: Fast-paced, start-up-like environment with established enterprise customers; values include honesty, respect, inclusion, transparency, ownership, and customer focus. [five9.com](https://www.five9.com/about/careers)
- **Diversity & Inclusion**: Committed to a diverse and inclusive culture where employees are empowered and heard. [five9.com](https://www.five9.com/about/careers/jobs)
- **Remote/Hybrid Policy**: Not explicitly stated; offices in multiple locations suggest hybrid/office model.
- **Benefits** (US full-time): 100% employer-paid health insurance (choice of 4 medical plans), dental, vision, life/disability insurance, 401(k), FSA, employee assistance program, commuter discounts, company equity, accrued PTO + paid holidays, company events. [five9.com](https://www.five9.com/about/careers)
- **Recognition**: Received Glassdoor Employees’ Choice Award for Best Places to Work (2022). [five9.com](https://www.five9.com/about)
- **Growth opportunities**: Internship program with impactful work and exposure to executives; career paths across development, customer success, sales, marketing, finance, and professional services.

## Sources
1. [Five9 About Page](https://www.five9.com/about)
2. [Five9 Careers Overview](https://www.five9.com/about/careers)
3. [Five9 Fact Sheet](https://www.five9.com/resources/five9-company-fact-sheet)
4. [Five9 Careers – Job Listings](https://www.five9.com/about/careers/jobs)

## Other roles at Five9

- [Partner Marketing Manager](https://feeny.ai/job/partner-marketing-manager-five9-united-states-57rby1rd8gvw) — United States
- [Executive Assistant](https://feeny.ai/job/executive-assistant-five9-united-states-h7gp9rd7q051) — United States
- [Quality Engineer II](https://feeny.ai/job/quality-engineer-ii-five9-porto-2fk0phxvdm68) — Porto, Portugal
- [Senior Global Solutions Architect](https://feeny.ai/job/senior-global-solutions-architect-five9-united-states-x59d6qrntcxc) — United States
- [NOC Technician](https://feeny.ai/job/noc-technician-five9-manila-6xwfrvqyk5x6) — Manila, Philippines
- [Manager, Network and Infrastructure Reliability](https://feeny.ai/job/manager-network-and-infrastructure-reliability-five9-bengaluru-serdn7bv5t1r) — Bengaluru, India
- [Cloud Platform Engineering Manager](https://feeny.ai/job/cloud-platform-engineering-manager-five9-colombia-1ns54705epzw) — Colombia
- [Network Engineer II – Operations](https://feeny.ai/job/network-engineer-ii-operations-five9-manila-v8y3hkt5vjsx) — Manila, Philippines
- [Senior Site Reliability Engineer - Compute Platforms](https://feeny.ai/job/senior-site-reliability-engineer-compute-platforms-five9-san-ramon-0yrmt5f359f8) — San Ramon, CA
- [Senior Site Reliability Engineer – Compute Platforms](https://feeny.ai/job/senior-site-reliability-engineer-compute-platforms-five9-irving-k0w6xygq2cbt) — Irving, TX