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Senior Backend Engineer
Gaya
Remote, United States
As a Senior Backend Engineer at Gaya, you'll architect and scale the systems that power insurance automation for thousands of users. You'll establish engineering best practices, lead…
Added 2 mins ago
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Utilities- Solutions Architect
Medina Talent Group
Remote, United States
- $130,000 to $150,000 USD / year
We are looking for a Solution Architect for a major utility provider’s Enterprise Strategy & Architecture group. Reporting to the Lead Enterprise Architect, the successful candidate in the…
Added 2 mins ago
ServiceNow Architect
Medina Talent Group
Henderson, NV · Dallas, TX · Irvine, CA
The Architect, Enterprise Architecture – ServiceNow Platform & Solution Architect holds dual accountability for the technical foundation of the ServiceNow platform and the end-to-end design…
Added 2 mins ago
Network Support Engineer
Mibura Inc.
Remote, United States
Added 2 mins ago
Modern Work Technology Specialist
Mibura Inc.
Remote, United States
Added 4 mins ago
Founding Frontend/UX Engineer
Solstice Health
New York City, NY
Added 4 mins ago
Founding Engineer (Applied AI & ML Ops)
Solstice Health
New York City, NY
Scope, architect, and build SOTA agents and pipelines while supporting customers directly.
Added 4 mins ago
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AI Developer
SunCore Digital
Scottsdale, AZ · Bellevue, WA
- $135,000 to $165,000 USD / year
SunCore Digital is seeking an experienced AI Developer to design, build, and deploy intelligent systems that power our next generation of client‑facing and internal automation tools. This…
Added 4 mins ago
AI Full Stack Engineer (Volunteer)
Solution Community
Remote, United States
Advanced, daily, hands-on proficiency with Claude Code, Codex, or an equivalent AI coding agent - able to architect, generate, debug, and ship full applications with AI as the primary…
Added 5 mins ago
AI/Machine Learning Engineer, Neuro-AI
Cahira Technologies
Boston, MA
We are seeking AI/Machine Learning Engineers who will architect and implement the core AI pipelines that drive our innovative solutions. This is a unique opportunity to build the future of…
Added 6 mins ago
Senior Mechanical Engineer
Fabri
Billerica, MA
Fabri is seeking a Senior Mechanical Engineer to architect, design, and deliver the in-house equipment and infrastructure that defines our manufacturing processes. This is a foundational…
Added 6 mins ago
Principal Systems Engineer
Fabri
Boston, MA
Fabri is seeking a Principal Systems Engineer to architect, design, and deliver the in-house equipment and infrastructure that defines our manufacturing processes. This is a foundational…
Added 10 mins ago
GL
Prompt Engineer (Founding Team)
Gradientflo Labs
San Francisco, CA
- $24,000 to $32,000 USD / year
You will be the language architect of Vibecoderz. The TutorAgent and its family of sub-agents only think as clearly as the prompts that guide them - and you will design those “thought…
Added 10 mins ago
GL
Product Manager (Founding Team)
Gradientflo Labs
San Francisco, CA
- $24,000 to $40,000 USD / year
You’ll be the voice of the user and the architect of Vibecoderz’ product vision. As the first Product Manager, you will define the “what” and “why” across our platform: from the TutorAgent…
Added 10 mins ago
GL
Head of Product Design (Founding Team)
Gradientflo Labs
San Francisco, CA
- $24,000 to $32,000 USD / year
Architect a block-based design system that scales across Byte Courses, TutorAgent, and Vibe Browser.
Added 10 mins ago
GL
Head of Data Analytics
Gradientflo Labs
San Francisco, CA
- $12,000 to $24,000 USD / year
Architect and optimize the Developer Graph in Neo4j.
Added 10 mins ago
GL
Head of Community (Founding Team)
Gradientflo Labs
San Francisco, CA
- $24,000 to $32,000 USD / year
You will be the voice, host, and architect of the Vibecoderz community. From Discord to global hackathons, you’ll create spaces where developers not only learn - they vibe.
Added 10 mins ago
GL
Full Stack Developer (Founding Team)
Gradientflo Labs
San Francisco, CA
- $40,000 to $60,000 USD / year
As our founding Full Stack Developer, you’ll own end-to-end delivery of features - from Next.js interfaces and block-based editors to FastAPI microservices and GCP workflows. You’ll ensure…
Added 10 mins ago
GL
DevOps Engineer (Founding Team)
Gradientflo Labs
San Francisco, CA
- $24,000 to $32,000 USD / year
…and security posture from day zero. You’ll ensure that when a developer ships code, it’s live in production safely, quickly, and traceably. You’ll architect the serverless-first cloud…
Added 10 mins ago
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Chief Technology Officer (Tech - Founding Pillar)
Gradientflo Labs
San Francisco, CA
- $40,000 to $60,000 USD / year
You will be the architect, strategist, and cultural driver of Vibecoderz’ engineering DNA. This isn’t a CTO role that floats above the codebase - this is a hands-on, deeply technical…
Added 10 mins ago
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Chief People Office (People - Founding Pillar)
Gradientflo Labs
San Francisco, CA
- $32,000 to $40,000 USD / year
You’ll act as a recruiter, negotiator, compliance leader, and culture architect - someone who understands what top engineers, designers, and marketers want in a product-first company, and…
Added 10 mins ago
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Chief Marketing Officer (GTM - Founding Pillar)
Gradientflo Labs
San Francisco, CA
- $40,000 to $60,000 USD / year
You’ll be the growth engine and cultural architect of Vibecoderz. As founding CMO, your mandate is to build Vibecoderz into the default home for AI-native developer learning. Think Notion’s…
Added 10 mins ago
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AI Engineer (Founding Engineer – AI)
Gradientflo Labs
San Francisco, CA
- $24,000 to $32,000 USD / year
You will be the intelligence architect of Vibecoderz. As the AI Engineer, you’ll design, implement, and optimize the multi-agent orchestration system that powers the TutorAgent,…
Added 11 mins ago
Technical Architect (Frontend/Backend) Internship
Metasys
Remote, United States
The Technical Architect (Frontend/Backend) is responsible for establishing the technical foundation and ensuring architectural coherence across all distinct application layers: the…
Added 11 mins ago
Site Reliability Engineer Internship
Metasys
Remote, United States
Observability & Alerting: Architect, maintain, and optimize the comprehensive observability stack (Prometheus, Grafana, Loki, Tempo, OpenTelemetry). Develop high-fidelity alerting and…

Gradientflo Labs

Full Stack Developer (Founding Team)

San Francisco, CA, United States

$40,000 to $60,000 USD / year

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Job details

Pay: $40,000 to $60,000 USD / year
Experience: 10+ years full stack experience with both React/Next.js (FE) and Python/FastAPI (BE).
Posting language: English

Original job description

Role Overview You will be the bridge between front-end flow and backend logic at Vibecoderz. One moment you’ll be implementing a Cmd+K command palette with buttery animations, the next you’ll be optimizing a Firestore schema to store 100K concurrent learner sessions. As our founding Full Stack Developer, you’ll own end-to-end delivery of features - from Next.js interfaces and block-based editors to FastAPI microservices and GCP workflows. You’ll ensure the TutorAgent’s intelligence and the Vibe Browser’s actions are experienced by users in real time, reliably and securely. You’ll use Linear for execution, Notion for specs, and GitHub for repos, collaborating with FE, BE, AI, Prompt, DevOps, and QA to ship polished, production-ready features at startup velocity.

Key Responsibilities

End-to-End Feature Delivery - Own user stories from PRD → FE/BE design → shipped feature, ensuring zero gaps between front and back layers.
Frontend Engineering - Build real-time collaborative UIs using Next.js, Tailwind, and shadcn/ui. Implement command palettes, block-based editors, and waveform animations.
Backend Engineering - Architect FastAPI services with async workflows, secure endpoints, and clean Firestore/Neo4j schemas.
Realtime Integration - Connect WebSocket events to FE interfaces, ensuring smooth TutorAgent streaming, live cursors, and collaboration features.
AI Workflows Integration - Expose AI outputs (artifacts, quizzes, code snippets) as APIs, and render them cleanly in the FE workspace.
Data Modeling - Define schemas across Firestore and Neo4j (Developer Graph), ensuring efficient queries and scalable structures.
Authentication & Security - Implement Firebase Authentication (Google/GitHub OAuth), JWT validation in API Gateway, and FE session handling.
Performance Optimization - Keep FE interaction latency <200ms, API p95 <100ms, and ensure SSR + RSC patterns deliver SEO-ready performance.
Testing & Reliability - Write E2E tests (FE + BE), schema validation, and contract tests to ensure regression-free deployments.
Collaboration Across Tools - Manage tasks in Linear, write clear PRDs in Notion, and maintain GitHub repo hygiene.
Problem Solving - Anticipate scaling issues across both FE and BE; propose solutions that balance developer experience and system reliability.

Success Metrics

90 Days (Probation):

Deliver one complete feature end-to-end (Text → Course → Artifact → Certification).
Deploy FastAPI → Cloud Run service with FE integration.
Workspace live with block editing, Cmd+K palette, and one AI-gen flow.

12 Months:

Handle 100K+ MAUs with <100ms p95 API latency and <200ms FE interaction latency.
Achieve feature parity with top-tier SaaS (Linear/Notion-level polish).
Zero Sev1 issues caused by FS-owned code in two consecutive quarters.
Test coverage >85% across FE + BE code.

Must-Haves

10+ years full stack experience with both React/Next.js (FE) and Python/FastAPI (BE).
Proven ability to ship end-to-end features in production SaaS products.
Strong grasp of async I/O, distributed systems, and real-time UIs.
Product company background with evidence of scaling products.
Deep understanding of SSR/CSR hybrids, caching, and API design.

Nice-to-Haves

Experience with Neo4j Graph DB.
Contributions to open-source frameworks (React, Next.js, FastAPI).
Prior work on AI-driven products or multi-agent systems.
Startup/founding engineer experience.

Tech Stack Visibility

Frontend: Next.js (App Router), React, TypeScript, Tailwind CSS, shadcn/ui, Zustand, Lucide icons, Framer Motion
Realtime: WebSockets, OT/CRDT frameworks
Backend: FastAPI, Python Async, Cloud Run, API Gateway
Data: Firestore, Neo4j Aura (Developer Graph), Redis
Workflows: Cloud Tasks, Cloud Workflows
Auth: Firebase Authentication (Google/GitHub OAuth)
CI/CD: GitHub Actions, Docker, Terraform
Observability: OpenTelemetry, Google Cloud Trace
Tools: Linear (execution), Notion (PRDs/specs), GitHub (repos)

Assessment Objective: Validate ability to build and deliver an end-to-end feature across FE + BE.

Challenge (Candidate PoC):

Build a Text → Course flow:
FE: Chat panel where user enters “Teach me React Hooks.”
BE: FastAPI endpoint /generate-course that returns structured course outline.
FE: Render outline as interactive blocks (slide, quiz, code snippet).
Add a Mini-App Sandbox:
FE: Code block with syntax highlighting + “Run” button.
BE: /generate-miniapp endpoint returning runnable JS snippet.
Execute safely in iframe with logs/errors captured.
Background Workflow:
Trigger certificate generation (mock PDF) via Cloud Task.
Fire Firestore trigger → SendGrid transactional email.
Performance:
FE interaction latency <200ms.
BE endpoint p95 <100ms.

Deliverables:

Deployed demo (Vercel + Cloud Run).
GitHub repo with FE + BE modular code.
Firestore schema + example data.
Postman collection for APIs.
5-min Loom walkthrough.

Evaluation Criteria:

Architecture & Code Quality (25%)
FE/BE Integration & UX (25%)
Real-time Performance (20%)
Data Modeling & Workflow Integration (15%)
Documentation & Testing (15%)

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