Senior Fullstack Engineer owns end-to-end features from frontend interfaces to backend infrastructure, shipping production systems with high uptime. Requires 5+ years experience, TypeScript/Node.js/React proficiency, SQL, and strong product instincts for fast iteration in a remote startup environment.
Salary not listed
Remote5+ YOEFullstack Engineering
About the role
Responsibilities
Take end-to-end ownership of features and products across the stack, from Agora interfaces to reliable backend infrastructure.
Work closely with product, design, operations, finance, external partners, and customers to gather requirements, prototype quickly, and ship with confidence.
Own from first prototype through launch, iteration, and beyond.
Basic Qualifications
5+ years of fullstack development experience, with 3+ years in TypeScript/Node.js and a modern frontend framework (React preferred).
Fluency with relational databases and SQL.
Proven ability to ship production systems, frontend and backend, with high uptime and minimal maintenance burden.
Strong product instincts and an eye for good design; work from Figma files and push back when needed.
Comfortable working directly with external partners and customers on requirements gathering, integration, and iterative feature development.
MVP mindset: scope milestones, ship, learn, and iterate fast.
Strong commitment to clean code principles and automated testing.
Deep understanding of API design, versioning, documentation, and modern authentication patterns.
Excellent communication skills and experience collaborating across product, design, and operations in remote, asynchronous environments.
Preferred Qualifications
Experience in fast-paced, high-growth startup environments where you've worn many hats.
Track record of prototyping and launching customer-facing products, not just internal tools.
Familiarity with performance profiling, latency reduction, and service-level adherence.
Background in designing and operating event-driven architectures.
Expertise in Docker, Kubernetes, Prometheus, and Grafana.
Passion for building tools that improve how people work with money.
Hands-on experience building in crypto, including onchain libraries and services, and integrating with blockchain infrastructure.
Experience integrating or interacting with blockchain node software (e.g., Geth, Solana validators).
Senior Software Engineer building custom payments workflows and integrations with multiple payment service providers (PSPs) at an AI-native revenue platform. Requires 5+ years experience specializing in payments systems, complex system design, and strong AI interest.
175k – 240k/yr
On-site5+ YOEFullstack Engineering
Senior Software Engineer, Merchant Onboarding
TabsNew York, NY
Senior Software Engineer building the full merchant onboarding journey at Tabs, an AI-native revenue platform. Own core backend services, product surfaces, internal tooling, and data flows end-to-end for finance teams. 5-8 years experience; fullstack TypeScript/React skills preferred.
175k – 240k/yr
On-site5+ YOEFullstack Engineering
Senior Product Engineer
AurelianSeattle, WA
Senior Product Engineer who owns outcomes end-to-end: talks to 911 dispatch customers, identifies problems, defines roadmap/prioritization, then builds and ships features across the AI call-handling and dispatcher-assistant platform. Requires product thinking, high ownership, customer empathy, and comfort across the full stack.
160k – 220k/yr
On-site4+ YOEFullstack Engineering
Senior Engineer I
SimplePracticeSanta Monica, CA +1
Senior full-stack engineer (heavy backend focus) building the next-generation practice management platform at SimplePractice. Develop features end-to-end with Ruby on Rails, Ember.js, AI/ML, and LLMs; requires 8+ years experience and compliance knowledge (PCI/HIPAA).
217k – 217k/yr
Hybrid8+ YOEFullstack Engineering
Senior Software Engineer
CarbonSunnyvale, CA
Senior Software Engineer building and scaling customer-facing web applications and modern APIs that integrate with backend services and control Carbon's global 3D printer network. Requires 5+ years experience with deep React expertise, API design, cloud platforms, and comfort working across the full web-to-backend stack.