Junior Fullstack Engineer

Small businesses represent 99.9% of all companies, yet they're still forced to choose between clunky, outdated enterprise phone systems or their personal phones. This multi-billion dollar market has been overlooked for decades, left to cobble together solutions that slow them down instead of helping them grow.Quo is changing that. We bring calls, texts, and customer information together into one easy-to-use, AI-powered platform. We're not just building a phone system. We're setting a new standard for how businesses connect with their customers.Driven by our values, we move fast, build with determination, and obsess over delivering value to the businesses that have been underserved for far too long.Today, Quo is trusted by more than 120,000 companies and rated #1 in customer satisfaction on G2. We're backed by Y Combinator, Tiger Global, Craft Ventures, Slow Ventures, and other top-tier investors. It's safe to say we're onto something big.About The Role
We're looking for a Junior Fullstack Engineer who is building their foundation and wants to grow quickly alongside experienced teammates. You'll work in one of two engineering squads, Gateway or Connect, shipping real features across our React web app and Node backend that small businesses rely on every day. You'll have a dedicated mentor, well-scoped work, and plenty of room to learn how a world-class production SaaS platform is built, run, and scaled.Gateway
Gateway owns the front door to Quo: how businesses sign up, choose a plan, pay, verify their business for compliance, and bring their existing phone numbers with them. You'll work on everything from the sign-up, plan, and checkout experiences customers see to the systems behind them, like billing and subscriptions, pricing and trials, taxes, account and trust verification, and number porting.Connect
Connect makes Quo part of the rest of a small business's tech stack. You'll help build and maintain integrations with tools like HubSpot and Salesforce, including the in-app experiences customers use to connect and manage them, and contribute to Quo's public API and webhooks, which let customers send messages, sync contacts, and log calls and messages in the other apps they use every day.Some Of The Things You’ll Do
Spend most of your time writing, testing, and shipping code in TypeScript, across our React frontend and Node backend.Build user-facing features in our web app, working from designs in Figma and our shared component library.Own well-scoped tasks end to end: understand the customer problem behind a ticket, build and test the change, and confirm it works once it's live.Investigate and fix bugs reported by customers and our support team.Review your teammates' code and learn from their reviews of yours.Write tests and documentation alongside your code, so the next person can pick up where you left off.Use AI coding tools to move faster while maintaining personal growth.Work closely with your mentor and squads, ask questions early, and grow toward owning larger pieces of work.Technical Stack And Tools
Our web app is built with React and TypeScript, using GraphQL and Relay for data fetching.We build UI with Vite, Vanilla Extract, and React Aria, and develop components in Storybook.We test with Vitest and React Testing Library.Our backend is built on Node using TypeScript.Our architecture is event-driven microservices with RabbitMQ at the center, with a federated GraphQL layer.We use a variety of databases for different purposes: Postgres, Elasticsearch, and Redis.Observability and delivery tools.Other tools: Claude Code and other AI coding tools, Linear, Notion, Slack, and Figma.About You
You have at least 2 years of software engineering experience in formal, full-time work environmentsYou've built web interfaces with React and TypeScriptYou've written backend code, such as APIs or services, using Node and TypeScriptYou enjoy working across the stack, from building interfaces people use to the APIs and data behind them.You have a solid grasp of programming fundamentals, including HTML and CSS, data structures, APIs, databases, and writing tests, and you're eager to deepen them.You display a strong sense of ownership of your work by monitoring performance, usage, and errors after it ships.You're curious. You seek to understand the "why" behind things so you can better plan and build the "how."You use AI tools in your work and think critically about what they produce.You care about the people who use what you build. You practice empathy and thoughtfulness as you weigh trade-offs.You strive for code that's readable, testable, and maintainable, and you leave things better than you found them.Nice To Have
Experience with SQL databases such as Postgres.Exposure to REST or GraphQL APIs, GraphQL clients like Relay or Apollo, or building against third-party APIs.Familiarity with web accessibility or component-driven development.Familiarity with message queues or event-driven systems.Interest in payments, billing, or SaaS integrations.Compensation
The annual base salary range for this position is as follows, plus equity and benefits:SF Bay Area, Los Angeles, Seattle, Portland, Boston, New York, and Washington, DC Metro: $141,000 - $166,000 USDAll other US Locations: $127,000 - $150,000 USDCanada: $130,000 - $153,000 CADThe ranges displayed reflect the target for new hire salaries, and within each range, individual pay is determined by your skills and experience, as well as relevant education. Your recruiter can share more and answer questions about the specific salary range during the hiring process.Salary is just one component of Quo's total compensation package. Your total rewards package will include equity, extensive medical coverage, a monthly lifestyle stipend, and a flexible PTO policy.Who we are
We're a remote-first company with a culture of trust, autonomy, and action. As we rapidly grow, we're intentionally building communities in a handful of hub cities while continuing to hire great talent wherever they happen to live. If you're looking for a place to do your best work, we'd love to hear from you.And remember, there's no such thing as a 'perfect' candidate. We're looking for optimists with grit and determination, who are excited to face the challenges of a growing startup. Quo is the type of company where you can grow, and we encourage you to apply for this role even if you don't think you meet all the requirements.We are committed to creating an inclusive and diverse work environment. It is important that you are able to bring your authentic self to work every day. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. #PostLI
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