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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. Role purpose The Core Applications team is doing greenfield work, introducing new concepts and capabilities to our suite of UI products on a modern React + TypeScript stack. As a Senior Software Engineer, you'll own significant portions of the codebase, drive technical decisions, and mentor fellow engineers. You'll collaborate closely with a distributed team across Australia and the US. This is a high-ownership role on a small, self-organizing team with direct visibility into a major product milestone. How you contribute Build and ship features on the new agent desktop in React + TypeScript + Nx, using AI coding agents as part of the daily workflow. Review and approve pull requests and provide constructive feedback that raises overall application quality. Mentor fellow engineers and help set the technical bar for the team. Collaborate async-first with engineering, product, and design across distributed time zones. Contribute to architectural decisions and async planning via written documentation, Jira, and Confluence. Skills, competencies and qualifications Required: Strong React and TypeScript proficiency; experience with other modern frameworks (Vue, Angular, Svelte) is a good signal. Testing experience with Jest and/or Playwright, with an understanding of the value of thorough test coverage. Able to operate autonomously on a small, fast-paced team; fills gaps and makes reasonable calls without constant direction. Strong written communication and collaboration skills for a remote, async-first, distributed environment. Comfortable conducting code reviews, providing constructive feedback, and mentoring less experienced engineers. Prior experience using AI coding tools and a genuine willingness to evolve those skills as the space changes. Bachelor's degree (or equivalent) in a relevant discipline. Desirable: Prior experience in CCaaS, agent desktop, or UI platform roles. Familiarity with TanStack Query and Zustand. Web accessibility knowledge; familiarity with WCAG standards and building accessible UIs. Monorepo and micro-frontend architecture experience; Nx preferred, but PNPM, Lerna, and other tools are good signals. Experience with WebSockets or real-time application development. Other requirements Working shift must be aligned to overlap with Pacific working hours. This position requires the ability to be On Call. Key relationships There are no direct reports to this role. Key stakeholders include: Service owners and their teams Technical leadership and senior management, including VPs Engineering teams Network and Telecom teams Customer service teams Compliance and infosec teams This is not a customer-facing role. 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: 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.
Here's how to pick the right one and stand out in your application.
144.883Jobs
31.687IN
81%EN
That number is real. WorkMundi's database shows 144,883 open engineer roles across the world. India has the most with 31,687 jobs, followed by the United States with 30,084. If you just finished reading one job ad and felt paralyzed by choice, you're not alone—but this scale is actually an advantage. It means you can afford to be selective.
Start by geography and language. The majority of engineer ads—117,837 of them—have the job posting text written in English. Use that as one filter, but remember: the ad text language tells you nothing about whether the role actually requires you to speak English day-to-day. Read the job description carefully. Then check which countries have the volume you're targeting. Singapore, Poland, and Australia round out the top five after India and the US.
Next, learn who's hiring. Accenture has posted 2,801 engineer roles. andurilindustries, speechify, and jobgether are also actively recruiting. If you're applying to one of these names, research their hiring patterns and interview style before you apply. That homework pays off.
When you interview, expect the question every engineer hears: 'Tell me about a time you had to debug a problem that wasn't in your job description.' Have a specific story ready—not a general one. Name the tools, the deadline pressure, and what you learned. Hiring managers listen for whether you see problem-solving as part of the role itself, not a favour.