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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 1 min ago
AI Full Stack Engineer (Volunteer)
Solution Community
Remote, United States
Volunteer AI Full Stack Engineer (AI-Native / Rapid Development)
Added 1 min ago
AI/Machine Learning Engineer, Neuro-AI
Cahira Technologies
Boston, MA
Are you an exceptional AI/ML Engineer with a passion for transforming human capabilities and treating neurological diseases? Join Cahira Technologies, a groundbreaking neurotech startup…
Added 2 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 2 mins ago
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Senior Foundry Engineer
Fabri
Boston, MA · Billerica, MA
- $115,000 to $140,000 USD / year
Fabri is seeking a Senior Foundry Engineer to build and own the process development of high-performance superalloy castings for demanding aerospace and space-industry applications. This…
Added 2 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 2 mins ago
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Operations Engineer
Fabri
Billerica, MA
- $120,000 to $130,000 USD / year
Fabri is seeking a hands-on Operations Engineer to join our fast-growing foundry team.
Added 2 mins ago
Metallurgical Process Engineer
Fabri
Billerica, MA · Boston, MA
Fabri is seeking a Metallurgical Process Engineer to build and own the solidification science behind high-performance investment castings for demanding aerospace and space-industry…
Added 2 mins ago
Sr. SDE, AWS Agentic WorkSpaces - Forefront (Agentic Harness)
Amazon.com Services LLC
Seattle, WA
…into our consoles and SDK. As a Senior Software Development Engineer you will be a key contributor to our agentic harness - the always-on platform layer that hosts our LLM agents: the agent…
Added 3 mins ago
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AI Marketing Project Manager
Together We Talent
Remote, United States
- $50 to $60 USD / hour
This is not an AI Engineer or AI Developer position. The Project Manager will serve as the critical bridge between Marketing business owners and AI development teams, translating marketing…
Added 3 mins ago
Software Engineer, XR Developer
Aether
Remote, United States
We're looking for a sharp, ambitious Frontend Engineer with strong CAD / 3D skills to take ownership of key parts of our in-browser solar configurator - a Three.js-powered design engine…
Added 6 mins ago
Billing Engineer
Tailscale
Remote, United States
We’re seeking a highly skilled and motivated Software Engineer to join our growing team. You will work as part of the engineering team to:
Added 6 mins ago
Billing Engineer
Tailscale
Remote, United States
We’re seeking a highly skilled and motivated Software Engineer to join our growing team. You will work as part of the engineering team to:
Added 6 mins ago
UI
Embedded Systems Engineer
Ulysses Inc.
San Francisco, CA
- $140,000 to $180,000 USD / year
We're looking for an Embedded Systems Engineer to own the firmware, electronics integration, and low-level hardware that make our underwater robotic systems work. You'll write the embedded…
Added 6 mins ago
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Prompt Engineer (Founding Team)
Gradientflo Labs
San Francisco, CA
- $24,000 to $32,000 USD / year
…will design those “thought patterns.” As the founding Prompt Engineer, you’ll build a prompt library and evaluation system that ensures Vibecoderz produces consistent, safe, and…
Added 6 mins ago
GL
Head of Growth (Founding Team)
Gradientflo Labs
San Francisco, CA
- $24,000 to $32,000 USD / year
…and monetization levers. You know how to run growth like an engineer: structured, data-driven, and always…
Added 6 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 6 mins ago
GL
DevOps Engineer (Founding Team)
Gradientflo Labs
San Francisco, CA
- $24,000 to $32,000 USD / year
As the founding DevOps engineer, you will design our CI/CD pipelines, observability stack, infra-as-code, and security posture from day zero. You’ll ensure that when a developer ships code,…
Added 6 mins ago
GL
Chief Technology Officer (Tech - Founding Pillar)
Gradientflo Labs
San Francisco, CA
- $40,000 to $60,000 USD / year
From low-level system design (Firestore schemas, Pub/Sub orchestration, Redis caches, Neo4j Developer Graph) to pixel-perfect UX outcomes (latency budgets, real-time TutorAgent flows, Vibe…
Added 6 mins ago
GL
Backend Developer (Founding Team)
Gradientflo Labs
San Francisco, CA
- $32,000 to $40,000 USD / year
Data Modeling & Schemas - Define Firestore schemas for users, courses, artifacts, results, and certifications. Manage Neo4j Developer Graph integration.
Added 6 mins ago
GL
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 8 mins ago
Support Engineer Internship
Metasys
Remote, United States
The Support Engineer / Customer Success role is the primary technical interface for our users. You'll provide timely, expert technical support to both our e-commerce customers and internal…
Added 8 mins ago
Site Reliability Engineer Internship
Metasys
Remote, United States
The Site Reliability Engineer (SRE) is responsible for the ultimate stability, performance, and scalability of our entire integrated supply chain e-commerce platform. You will apply…
Added 8 mins ago
Security Engineer Internship
Metasys
Remote, United States
The Security Engineer is a critical role responsible for implementing and enforcing robust security practices across our entire integrated supply chain e-commerce platform. You will…
Added 8 mins ago
Frontend Engineer Internship
Metasys
Remote, United States
The Frontend Engineer is essential for bringing our supply chain e-commerce vision to life by building high-performance, responsive, and accessible user interfaces. You will be responsible…

Gradientflo Labs

AI Engineer (Founding Engineer – AI)

San Francisco, CA, United States

$24,000 to $32,000 USD / year

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Job details

Pay: $24,000 to $32,000 USD / year
Posting language: English

Original job description

Role Overview 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, PlannerAgent, ScreenPerceptionAgent, and CodeAgent. This is not a research-only role. It’s applied AI at scale: integrating Gemini models, Pub/Sub protocols, LangSmith evals, and Neo4j graphs into a production-grade learning platform. You’ll work closely with Backend, Prompt, and Frontend engineers to ensure AI capabilities feel seamless, fast, and trustworthy for 150M+ developers worldwide. You’ll use Linear for task management, Notion for specs and experiments, and GitHub for code reviews, making the AI system’s evolution transparent and collaborative.

Key Responsibilities

Multi-Agent Orchestration - Implement TutorAgent and sub-agents using the Google Agent Development Kit (ADK), ensuring modularity and reliability.
Model Integration - Integrate Gemini Pro, Gemini Vision, and Gemini Live API for multimodal reasoning (text, vision, voice).
Communication Protocols - Design and maintain Agent-to-Agent (A2A) communication via Google Pub/Sub. Guarantee low-latency, async messaging.
Context & Memory Systems - Build working memory in Redis, long-term user data in Firestore, and Developer Graph in Neo4j to support adaptive tutoring.
Artifact Generation - Collaborate with Prompt Engineers to refine artifact workflows: slides, quizzes, code snippets, and runnable mini-apps.
Evaluation & Guardrails - Build evaluation pipelines in LangSmith/Langfuse to test prompt stability, reduce hallucinations, and monitor drift.
RAG & Vibe Browser - Integrate retrieval-augmented generation (RAG) pipelines with GitHub docs, StackOverflow, and MDN for contextual support.
Adaptive Learning Loops - Implement performance-tracking systems that adapt course flow based on learner progress and quiz outcomes.
Scaling & Optimization - Benchmark and optimize model selection via hybrid routers (Gemini Flash for speed, Pro/Claude for depth).
Security & Safety - Implement guardrails against unsafe generations, prompt injection, and biased outputs.
Cross-Team Collaboration - Translate PM requirements into AI system designs, coordinate with Backend for APIs, and FE for real-time outputs.

Success Metrics

90 Days (Probation):

TutorAgent and PlannerAgent integrated with Gemini Pro + Pub/Sub messaging.
Redis working memory and Firestore user schema live.
LangSmith evaluation pipeline created with baseline metrics (<15% hallucination rate).

12 Months:

Orchestrate 10+ specialized agents in production.
Reduce TutorAgent response latency <3s end-to-end.
Adaptive learning system live with >40% improvement in learner retention.
AI drift monitoring and guardrails automated in CI/CD.

Must-Haves

10+ years in applied AI/ML engineering.
Expertise in LLM orchestration frameworks (LangChain, CrewAI, ADK).
Deep experience with multimodal model integration (text, voice, vision).
Strong knowledge of messaging systems (Pub/Sub, Kafka, or similar).
Proven delivery of AI-first products in production environments.

Nice-to-Haves

Research background in NLP, RLHF, or agentic AI systems.
Contributions to open-source AI frameworks.
Prior work on developer-focused AI products.
Startup/founding engineer experience.

Tech Stack Visibility

Core AI: Google ADK, Gemini Pro, Gemini Vision, Gemini Live API
Communication: Google Cloud Pub/Sub
Memory: Redis (working), Firestore (archival), Neo4j Aura (Developer Graph)
Eval & Prompting: LangSmith, Langfuse, hybrid model router
Infra: Cloud Run, API Gateway, GitHub Actions
Tools: Linear (execution), Notion (PRDs/experiments), GitHub (repos)

Assessment Objective: Validate ability to design and implement a production-ready multi-agent system.

Challenge (Candidate PoC):

Build a TutorAgent that:
Takes input: “Teach me React Hooks.”
Delegates to sub-agents:
CurriculumAgent → outline
ContentAgent → lessons
CodeAgent → runnable code snippet
QuizAgent → quiz JSON
Stores all results in Firestore + Developer Graph (Neo4j).
Communicates via Pub/Sub.
Add a Learning Adaptation Loop:
If quiz score <60%, regenerate lesson with simplified examples.
Evaluation & Guardrails:
Set up LangSmith eval pipeline with at least 20 golden prompts.
Implement guardrail filter to block unsafe outputs.
Performance Targets:
TutorAgent orchestration end-to-end <3s.
Sub-agent response <1.5s each.

Deliverables:

Multi-agent orchestration codebase.
Firestore + Neo4j schema examples.
Evaluation report (accuracy, latency, hallucination rate).
GitHub repo with CI integration.
5-min Loom demo walkthrough.

Evaluation Criteria:

Architecture & Orchestration Design (30%)
Model Integration & Multimodal Handling (20%)
Evaluation & Guardrails Implementation (20%)
Performance & Scalability (15%)
Documentation & Testing (15%)

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