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Senior Backend Engineer
Gaya
Remote, United States
As a Senior Backend Engineer at Gaya, you will be critical in enhancing and scaling our backend systems. You will be responsible for improving our API infrastructures, optimizing core…
Added just now
Lead Engineer
Gaya
Remote, United States
As a Lead Engineer at Gaya, you will take on a crucial leadership role in shaping our platform's front-end and back-end architecture. You will be instrumental in driving the development of…
Added just now
Backend Engineer
Gaya
Remote, United States
As a Backend Engineer at Gaya, you will work hand-in-hand with our Senior Backend Engineer to build, test, and scale the backend systems powering insurance automation for thousands of…
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AI Software Engineer
Gaya
Remote, United States
We're looking for a software engineer to help build, maintain, and evolve the production services behind those systems. The work is varied by design: AI extraction pipelines, background job…
Added 2 mins ago
Mechanical Engineer, Production Operations (Starship)
SpaceX
Starbase, TX · Brownsville, TX
OPERATIONS ENGINEER, STARSHIP PRODUCTION (STARBASE)
Added 2 mins ago
CO
Lead Software Engineer
Connections Outsourcing
Remote, United States
- $180,000 to $255,000 USD / year
5–15 years of professional experience as a full-stack engineer, with proven product ownership.
Added 2 mins ago
AI Engineer - Equity Only
Luupli
Remote, United States
As an AI Engineer at Luupli, you will play a pivotal role in developing intelligent systems and orchestrating agentic workflows that power Luupli’s AI features. Your work will span…
Added 2 mins ago
MT
Site Reliability Engineer
Medina Talent Group
Irvine, CA
- $125,000 to $155,000 USD / year
As a Site Reliability Engineer, you will be immersed in a high-performing and frequently challenged team responsible for the reliability, scalability, and operational excellence of product…
Added 2 mins ago
MT
Lead Engineer
Medina Talent Group
Irvine, CA
- $135,000 to $150,000 USD / year
The Lead Engineer for Enterprise Applications is responsible for driving the design, development, modernization, and lifecycle management of enterprise application portfolios. This role…
Added 2 mins ago
MT
Forward Deployment Engineer- San Diego Hybrid
Medina Talent Group
San Diego, CA
- $155,000 to $200,000 USD / year
Added 2 mins ago
MT
Forward Deployment Engineer-Healthcare experience preferred/ 100% remote
Medina Talent Group
Remote, United States
- $150,000 to $190,000 USD / year
Added 2 mins ago
Telecom Supply Chain Manager
Mibura Inc.
Remote, United States
…an AI accelerated computing era. As a Connectivity Delivery Engineer, Cloud Interconnection + Wireless, you will perform a key role in delivering the core infrastructure and foundational…
Added 2 mins ago
Network Support Engineer
Mibura Inc.
Remote, United States
Join our team as a Network Support Engineer, where your technical & analytical skills, proactive mindset, and passion for solving complex problems with the internet will come into play.…
Added 3 mins ago
Staff/Senior Software Engineer, CAD App (Full stack)
Motif
Remote, United States
Added 3 mins ago
Staff/Principal Software Engineer, 3D Modeling
Motif
Remote, United States
Added 3 mins ago
Senior Power Systems Engineer
Analog Devices Inc.
CA
DC/HV Power System Engineer within Datacenter Infrastructure
Added 3 mins ago
Senior Power Systems Engineer
Analog Devices Inc.
CA
DC/HV Power System Engineer within Datacenter Infrastructure
Added 4 mins ago
SH
Founding Product Engineer
Solstice Health
New York City, NY
- $150,000 to $275,000 USD / year
…life sciences marketing content. We’re looking for a Product Engineer to join our founding team and help design, build, and scale the core product experience end to…
Added 4 mins ago
SH
Founding Full-Stack Engineer (Backend-leaning)
Solstice Health
New York City, NY
- $150,000 to $275,000 USD / year
Added 4 mins ago
Founding Frontend/UX Engineer
Solstice Health
New York City, NY
Added 4 mins ago
SH
Founding Forward Deployed Engineer
Solstice Health
New York City, NY
- $160,000 to $300,000 USD / year
As a Forward Deployed Engineer at Solstice, you’ll sit at the intersection of engineering, product, and customer success.
Added 4 mins ago
Founding Engineer (Applied AI & ML Ops)
Solstice Health
New York City, NY
Added 4 mins ago
AI Design Engineer
Solstice Health
New York City, NY
…compliant, compelling content at scale. As our Founding AI Design Engineer, you’ll be the creative force behind how that content looks, feels, and communicates visually, bringing together…
Added 4 mins ago
SD
Mobile Test Engineer
SunCore Digital
Scottsdale, AZ · Bellevue, WA
- $135,000 to $155,000 USD / year
SunCore Digital is seeking a Mobile QA Engineer, Flutter to own hands-on testing of our Flutter-based mobile applications across supported Android and iOS devices.
Added 4 mins ago
TS
Principal/Staff HPC Network Engineer
The San Francisco Compute Company
San Francisco, CA
- $250,000 to $325,000 USD / year

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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