FullStack Engineer

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 Five9

Five9 is a global leader in cloud software for the enterprise contact center market, powering billions of customer interactions annually. Since 2001, Five9 has been at the forefront of the cloud revolution, helping organizations deliver exceptional customer experiences, improve productivity, and achieve measurable business outcomes.

We are expanding our engineering and delivery teams in Bangalore and are seeking passionate professionals to help design, implement, and scale Five9’s next-generation cloud-native services.

Key Responsibilities

• Develop information systems by designing, developing, and installing software solutions
• Prioritize tasks effectively, communicate clearly, and deliver within stipulated timelines.
• Apply strong analytical capabilities to implement solutions based on agreed designs.
• Stay on the leading edge of development practices.
• Be passionate about great technologies, especially open source.
• Make informed decisions quickly and take ownership of services and applications at scale.
• Work collaboratively with others to achieve goals.

Qualifications & Skills

• 5 to 6 years of experience in the full development lifecycle.
• Excellent understanding of front-end technologies such as Angular IO, JavaScript, HTML5, CSS3, Bootstrap 3.0, NGRX, and RXJS.
• Strong proficiency in C#, OOPS concepts, .NET Core, Entity Framework, and ASP.NET Core, preferably with a Linux-based development background.
• Experience working with event-driven architectures and Publisher–Subscriber patterns.
• Hands-on experience in building reusable Angular components.
• Expertise in responsive UI/UX design.
• Good understanding of user authentication and authorization across multiple systems, servers, and environments.
• Strong unit testing, debugging, and problem-solving skills.
• Proficient in version control systems such as GIT and Azure DevOps (ADO).
• Experience working in Agile/Scrum development environments.
• Cloud exposure on at least platform — Google Cloud Platform (GCP), Microsoft Azure, or Amazon Web Services (AWS).
• Proficiency with RDBMS (SQL Server, MySQL, PostgreSQL) and NoSQL databases (MongoDB, Redis, DynamoDB).
• Knowledge or experience in the Contact Center domain is an added advantage.
• Exposure to Salesforce development will be an added advantage.

Why Five9

At Five9, we believe that technology is as powerful as the people behind it. You’ll be part of a team that values collaboration, innovation, and accountability, and you’ll have the opportunity to make a meaningful impact on how global enterprises engage with their customers.

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.

View our privacy policy, including our privacy notice to California residents here:

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

• 5 to 6 years of experience in the full development lifecycle.
• Excellent understanding of front-end technologies such as Angular IO, JavaScript, HTML5, CSS3, Bootstrap 3.0, NGRX, and RXJS.
• Strong proficiency in C#, OOPS concepts, .NET Core, Entity Framework, and ASP.NET Core, preferably with a Linux-based development background.
• Experience working with event-driven architectures and Publisher–Subscriber patterns.
• Hands-on experience in building reusable Angular components.
• Expertise in responsive UI/UX design.
• Good understanding of user authentication and authorization across multiple systems, servers, and environments.
• Strong unit testing, debugging, and problem-solving skills.
• Proficient in version control systems such as GIT and Azure DevOps (ADO).
• Experience working in Agile/Scrum development environments.
• Cloud exposure on at least platform — Google Cloud Platform (GCP), Microsoft Azure, or Amazon Web Services (AWS).
• Proficiency with RDBMS (SQL Server, MySQL, PostgreSQL) and NoSQL databases (MongoDB, Redis, DynamoDB).
• Knowledge or experience in the Contact Center domain is an added advantage.
• Exposure to Salesforce development will be an added advantage.