New opportunity

Founding AI Engineer

NOSCEN · Sunnyvale, United States

About this role

Noscen is hiring a Founding AI Engineer in Sunnyvale, CA, to build the intelligence layer for its hardware-and-software AI life copilot. The role focuses on context engineering, memory, and systems for a personalized assistant that uses multimodal signals while protecting user privacy and data boundaries.

Responsibilities

  • Build systems that understand real-world user context from multimodal inputs, and design memory and personalization infrastructure that develops insights over time.
  • Develop retrieval and reasoning systems that supply relevant context when the assistant needs to act.
  • Own AI pipelines, model workflows, APIs, storage, evaluation, monitoring, and privacy-first data handling from implementation through product use.
  • Collaborate with product, design, and engineering teams to turn ambiguous user needs into robust AI capabilities.

Requirements

  • Bachelor’s degree or above in computer science or a related field; at least 3 years of full-time work experience in a related field and at least 2 years of generative AI experience building and shipping applied systems end to end.
  • Experience shipping systems using LLMs, VLMs, or multimodal models, including running, adapting, and evaluating open-source models such as DeepSeek, Qwen, or Llama.
  • Deep understanding of context engineering, including approaches such as RAG, memory systems, embeddings, retrieval and ranking, MCP servers, and agent frameworks. Strong Python and backend/systems engineering skills, ownership, clear communication, and the ability to turn ambiguous ideas into working systems are required.

Preferred

Experience with Docker, Kubernetes, AWS, GCP, or Azure, or with an early-stage startup.

Compensation is $150,000–$250,000 per year, with early-stage equity and health, dental, and vision coverage. H1-B and green card sponsorship are available for qualified candidates.

For full details about this role, click “Apply on company site” to view the employer’s original posting.

Skills for this role

Multimodal AIGenerative AILLMsVLMsContext EngineeringMemory SystemsRAGEmbeddingsRetrievalRankingMCP ServersAgent FrameworksOpen-Source ModelsModel EvaluationPythonBackend EngineeringAPI DevelopmentAI PipelinesMonitoringPrivacy-First Data HandlingDockerKubernetesAWSGCPAzureCross-Functional CollaborationCommunication

Your skill match

Checking your profile…

YOUR NEXT STEP

Get interview-ready for this role

A focused preparation guide, built around this job’s responsibilities and requirements.

✦ AI-generated guide
Preparation suggestions, not the employer’s actual interview questions. Always check the original posting for current requirements.
01

Understand the role

What matters most

  • Multimodal context understanding

    The role calls for systems that interpret real-world context from multimodal inputs. Prepare to explain how you would turn signals into usable context for an assistant, including how you would evaluate whether the interpretation is useful.

  • Memory and personalization

    The role requires context and memory systems that support insights and personalization over time while protecting user privacy and data boundaries. Prepare to discuss what should be retained, retrieved, updated, or excluded.

  • Timely retrieval and reasoning

    The role calls for giving the assistant the right context at the right moment. Prepare to explain retrieval and ranking choices, and how you would test whether supplied context improves the assistant’s response.

  • End-to-end AI system ownership

    The engineer will own pipelines, model workflows, APIs, storage, evaluation, and monitoring. Prepare to describe the decisions and checks involved in taking an applied AI system from implementation into product use.

  • Turning ambiguity into capabilities

    The role involves working with product, design, and engineering to translate ambiguous human needs into robust AI capabilities. Prepare to show how you would narrow a vague need into a testable system behavior.

Likely challenges to think through

  • Useful context without overinterpretation

    A likely design challenge, not a reported problem: multimodal signals may be incomplete or ambiguous, while the assistant needs to act at a useful moment. Prepare an approach that weighs confidence, timeliness, and the option to avoid an unsupported inference.

  • Personalization within data boundaries

    A likely trade-off, not a reported problem: longer-lived memory may improve personalization but increases privacy and data-boundary concerns. Prepare to explain retention, access, and evaluation choices without assuming a specific company policy.

  • Building broadly while keeping the system measurable

    A likely founding-role challenge, not a reported problem: owning architecture and delivery from scratch can compete with thorough evaluation and monitoring. Prepare to explain what you would validate first, what you would defer, and how you would detect failures after release.

03

Practice your answers

Technical practice

How would you turn multimodal signals into a useful picture of a user's current context?

What to coverSuggested preparation: Explain how you would combine signals while accounting for missing, conflicting, or uncertain inputs. Discuss how you would test whether the resulting context helps the assistant respond usefully.

How would you design memory that supports personalization over time?

What to coverSuggested preparation: Distinguish short-lived context from information worth retaining, and explain how memories could be updated or corrected. Address the trade-off between useful continuity and unnecessary retention.

How would you retrieve and rank context for an assistant response?

What to coverSuggested preparation: Walk through a retrieval approach using embeddings, ranking, or RAG where appropriate. Explain how you would balance relevance, freshness, and the amount of context supplied to the model.

How would you decide when an assistant has enough context to reason or take action?

What to coverSuggested preparation: Describe how you would handle incomplete or contradictory context before producing an answer or action. Discuss the trade-off between timely assistance and acting on weak evidence.

How would you compare open-source models for this assistant?

What to coverSuggested preparation: Explain how you would run and evaluate candidate LLMs, VLMs, or multimodal models against the intended tasks. Discuss when adapting a model might be worthwhile rather than changing its context or retrieval pipeline.

How would you structure the Python backend and AI pipeline from inputs to assistant output?

What to coverSuggested preparation: Sketch the responsibilities of model workflows, APIs, storage, and pipeline components without assuming a particular stack. Explain how you would make failures observable and keep component boundaries clear.

How would you protect user privacy and data boundaries in context and memory systems?

What to coverSuggested preparation: Explain where sensitive information could enter, persist, or cross a boundary in a personalized assistant. Discuss how you would limit access and retention while preserving useful functionality.

How would you evaluate and monitor the assistant after launch?

What to coverSuggested preparation: Separate checks of context quality, retrieval, personalization, and end-to-end usefulness. Explain what monitoring would help identify degraded behavior or privacy-related failures without unnecessarily exposing user data.

When would you use an MCP server or agent framework in this system?

What to coverSuggested preparation: Explain what each could contribute to giving a model external context or capabilities. Weigh that benefit against added complexity, reliability concerns, and data-boundary risks.

How would you troubleshoot an assistant that gives irrelevant responses despite having relevant stored context?

What to coverSuggested preparation: Trace the path from stored information through retrieval, ranking, context assembly, and model output. Explain how you would isolate the failure before changing the model or pipeline.

Behavioural practice

Tell me about a time you turned an ambiguous need into a working AI capability.

What to coverSuggested preparation: Use a real situation/action/result example, explaining how you clarified the need and chose an initial implementation. State what the result showed and what you changed as you learned.

Describe a time you owned an applied AI system from implementation through use.

What to coverSuggested preparation: Use a real situation/action/result example that distinguishes your decisions from the team's work. Explain how you handled evaluation, operational issues, or follow-through after shipping.

Tell me about a time you worked with product, design, and engineering on an uncertain problem.

What to coverSuggested preparation: Use a real situation/action/result example showing how you communicated technical trade-offs and resolved differing priorities. Describe the resulting decision and its effect on the work.

Describe a time you balanced fast execution with a data or user-protection concern.

What to coverSuggested preparation: If you have a relevant real example, explain the situation, your action, and the result. Focus on how you made the trade-off visible and preserved an appropriate boundary rather than claiming speed and protection never conflicted.

Tell me about a time feedback changed your technical approach.

What to coverSuggested preparation: Use a real situation/action/result example that shows how you listened, tested an assumption, and revised your approach. Explain what improved and what you learned.

02

Sharpen your knowledge

Topics to prepare

  • Multimodal context understanding

    Sketch how signals from a wearable companion could become a time-ordered account of user context; identify uncertainty and conflicting signals. Relevant because the role builds understanding from multimodal inputs.

  • Memory and personalization

    Compare short-lived context with longer-lived memory, then outline when an insight should be updated or discarded. Relevant to personalization that develops over time.

  • Retrieval and context engineering

    Trace a sample request through embeddings, retrieval, ranking, and context selection; explain how you would check whether the selected context is useful. The posting explicitly names these approaches, alongside RAG, MCP servers, and agent frameworks.

  • Privacy and data boundaries

    Draw a data-flow diagram for user signals, memory, model calls, and storage; mark where access or retention decisions are needed. Relevant to the stated privacy-first architecture, without assuming a particular policy.

  • Evaluation of applied AI

    Draft example cases for relevance, personalization, and incorrect or missing context, then choose what to measure and monitor. Relevant because the role owns evaluation and monitoring through product use.

Skills to revise

  • Build a Python context pipeline

    As a practice exercise, implement a small Python flow that accepts sample events, stores context, and exposes a retrieval API. This mirrors the posting’s Python, backend, pipeline, storage, and API responsibilities.

  • Test retrieval and ranking

    As a practice exercise, create a small set of requests with expected relevant records, run retrieval and ranking, and inspect misses. This directly exercises the advertised retrieval-and-reasoning work.

  • Run and evaluate an open-source model

    As a practice exercise, run an available open-source model and compare its outputs on a fixed set of context-rich cases; document one adaptation and its effect. The posting explicitly calls for running, adapting, and evaluating models such as DeepSeek, Qwen, or Llama.

  • Check privacy boundaries in implementation

    As a practice exercise, add tests that verify one user’s stored context is not returned for another user and that excluded data does not enter a model request. This supports the role’s privacy-first data handling.

  • Scope an ambiguous product request

    As a practice exercise, turn a vague assistant need into a brief proposal with assumptions, a working slice, evaluation cases, and questions for product and design. This reflects the role’s end-to-end ownership and cross-functional collaboration.

04

Your preparation checklist

  • Map the stated requirements

    Prepare a fact-only evidence sheet for the listed degree, 3 years of related full-time work, 2 years shipping applied generative AI systems, and Python/backend experience. Leave anything unsupported blank.

  • Prepare an end-to-end project walkthrough

    Select a relevant shipped system, if available. Be ready to explain your contribution, model choices, APIs, storage, deployment, evaluation, monitoring, and what changed after product use.

  • Sketch a multimodal context design

    Practice a design exercise for turning multimodal signals into useful assistant context. Label proposed inputs and constraints as assumptions; explain how you would clarify them before implementation.

  • Design memory and retrieval on paper

    Draft a diagram showing what the assistant stores, how it updates personalized memory, and how embeddings, retrieval, and ranking could supply context at the right moment. Explain trade-offs rather than assuming one approach fits every use.

  • Prepare model evaluation evidence

    If you have relevant work, assemble examples of running, adapting, and evaluating an open-source LLM, VLM, or multimodal model. Otherwise, outline how you would compare candidates and test whether retrieved context improves responses.

  • Work through privacy and ownership decisions

    Prepare a proposed data-flow diagram covering user-data boundaries, storage, APIs, pipeline monitoring, and evaluation. Pair it with an example of how you would turn an ambiguous product need into a working capability with product, design, and engineering.

  • Write focused questions for NOSCEN

    Ask which multimodal signals and assistant actions are in scope first, how user privacy boundaries are defined, and what the founding engineer would own initially. These are questions to resolve, not assumptions about the product.

AI-generated from the job information · Prepared Sep 30, 2026 (UTC)Useful preparation, not a guarantee of eligibility or an offer.

Availability last checked: Nov 4, 2026. Status can change after a check; confirm on the employer’s website. Report an issue · Our checking policy

KEEP EXPLORING

Similar AI jobs

Related skills and specializations in United States. Matched to this role, not your profile.

Explore more jobs
Finding similar opportunities…