Founding Fullstack Engineer - Core
Join our core engineering team to build and scale cloud-native services and full-stack solutions. You’ll work across frontend and backend systems, drive technical initiatives, and play a key role in delivering high-quality, production-ready features. This role gives you ownership and autonomy — you’ll move fast, learn fast, and push the boundaries of what’s possible.
What You’ll Be Working On
🚀 Core Development
Write scalable business logic for our cloud-native backend services.
Drive and implement frontend solutions with modern frameworks.
Collaborate closely with product, design, and engineering teams to build end-to-end functionality.
Quickly adopt and adapt to new technologies — stepping out of your comfort zone is part of the daily routine.
🛠 Engineering Citizenship
Maintain, refactor, and migrate existing services.
Participate in code reviews to ensure high standards.
Handle on-call rotations and incident management.
Improve developer processes and experience across the full lifecycle from coding to operations.
💡 Technical Leadership
Write technical designs and lead discussions on emerging products.
Drive initiatives that align with business OKRs, conducting research and designing solutions for long-term impact.
Contribute to every stage of product development — from ideation to prototyping, A/B testing, and scaling architectures.
✅ Technical Quality
Employ automated testing to ensure reliability and resilience of features.
Implement rigorous release practices including code reviews, CI/CD pipelines, and deployment automation.
🎯 Autonomy & Ownership
Drive projects independently without constant guidance from Tech Leads/CTO.
Communicate technical decisions effectively in meetings, Slack discussions, design docs, and daily updates.
What We’re Looking for
Strong Vibe Coder
Able to produce high-quality, production-ready code at speed.
Demonstrates taste and craftsmanship — The Way of Code.
1+ years of full-stack development experience, building consumer or business-facing products.
Proficiency in TypeScript, with experience in Python and Go (optional, but a plus).
Hands-on experience with Supabase, Postgres, Firebase.
Experience developing microservices in Node.js, Python, and Go.
Strong frontend expertise with React, Next.js, Electron (optional).
Infrastructure at scale: multi-tenant systems, load balancing, sticky sessions, caching, MQ.
Monitoring and observability with OpenTelemetry, Grafana, Datadog.
Analytics & experimentation platforms: PostHog, Amplitude, Optimizely.
Containerized services: Docker, ECS, Kubernetes.
Proven ability to deliver production-level code with robust error handling, unit tests, and E2E coverage.
Preferred Qualifications
Hackathon winner or equivalent hands-on builder track record.
Deep experience with Kubernetes and AWS.
Strong DevOps background, including building CI/CD pipelines for automated testing and software release.
Experience with WebSocket & Server-Sent Events (SSE).
Crawler and automation expertise: large-scale scraping, Selenium, Appium.
Data wrangling with BigQuery, plus data pipelines using Spark, Apache Beam, DBT, Airflow.
Experience building data lake and data warehouse solutions
What We can Bring to You
AI-native Development: Free-flow of coolest AI tools (Claude, Cursor, Devin, Zapier Agents.. you name it!). We may ask you to spend >= X tokens
True Ownership: We empower our engineers to think like company founders, proactively identify and own problems. You'll have significant autonomy from concept, design, tool to deployment.
Be Real, Be a Dreamer: We value creative and intelligent methods to achieve bigger dreams. Here you can push the boundary, collaborate with smart people, and build futuristic products together
High Aesthetic for Tech & Product: We champaign deep passions and high standard for technology and product. You can hold up your own taste on code quality, product design, system robustness, and the beauty of the final user experience
Hybrid Work: Provide flexibility for work, animal-and-plants friendly offices across China, India, and US. Sometime we organize offsite hackathon and fun parties!
Unlimited Pay Day-offs: Good life brings creativity. We value efficiency and impact, over unproductive overtime
Interview Process
15-min Intro Call - Learn more about our mission and hiring expectations
Online Assignment Use any tools you like within OA system
Two Rounds of Video Chats – One with 1-hour live coding exercise and another with 30-min deep dive. Just real problem solving on technical and soft skills, including some deep dives in your past projects.
Paid Work Trial (4-5 Days) – If the fit feels right, you’ll dive right in and build with us. Get paid to show your skills in action.
About Final Round AI
Based in San Francisco, California, Final Round AI is revolutionizing the job interview process with cutting-edge technology. Our AI-native platform is powered by cutting-edge design and technology and developed via agentic workflow and newest development paradigm. Our mission is to help all-level candidates from students to senior managers to stand out, feel confident, and secure the job you’ve always wanted.
Backed by some of Silicon Valley's leading venture capital firms, Final Round AI continues to grow rapidly. Our team is expanding, and we’re looking for hacker-minded and visionary problem-solver and leaders to join a fast-paced, dynamic environment. With over one million candidates from 100+ countries already securing their dream jobs, Final Round AI is transforming careers and breaking new ground.