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Stack AV

Senior Software Engineer, ML Platform

Remote, United States

Apply on job-boards.greenhouse.io About employer

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Job details

Experience: 5+ years of relevant domain experience.
Posting language: English
Posted: Nov 12, 2026

Original job description

About Stack:

Stack is developing revolutionary AI and advanced autonomous systems designed to enhance safety, reliability, and efficiency of modern operations. Stack's autonomous technology incorporates cutting-edge advancements in artificial intelligence, robotics, machine learning, and cloud technologies, empowering us to create innovative solutions that address the needs and challenges of the dynamic trucking transportation industry. With decades of experience creating and deploying real world systems for demanding environments, the Stack team is dedicated to developing an autonomous solution ecosystem tailored to the trucking industry's unique demands.

If you are an Internal Candidate, please apply via our Internal Job Board.

About the Role:

In the ML Data Understanding team, our mission is to provide trusted and useful data to efficiently power all of Stack's ML applications end-to-end from mining to training to safety evaluation. We work hand-in-hand with AV autonomy teams to provide cutting-edge solutions to all their data needs, working across data engineering, mining, modeling and infrastructure. In particular, we provide services to find (data mining), curate (datasets), annotate (data labeling), search and serve (high throughput data access) data for all ML needs.

Data Mining: We are building a framework and infrastructure to find interesting events quickly and flexibly. As part of this mission, you would be setting the direction for and helping us build an inference service using LLMs, open-world models and vector databases.
Semantic Search for Data Mining: We are building the infrastructure of a highly scalable semantic search service for multimodal data to find interesting events quickly and flexibly. As part of this mission, you would be setting the direction for and helping us build an inference service using the latest AI models & approaches.
Dataset management for training: We are building state of the art infrastructure to support machine learning training and inference workloads using OSS components such as Ray, Spark, Lance and Iceberg.

Responsibilities:

Leverage AI-assisted software engineering to architect next-generation multimodal semantic search and data discovery platforms for autonomous driving development.
Investigate and apply frontier large language models, visual language models, and state-of-the-art Retrieval Augmented Generation (RAG) techniques.
Build out agentic data mining, semantic search, and data curation workflows as part of a recursive self-improvement machine learning loop.
Develop data understanding platform infrastructure for real-time querying/vector databases and batch/stream processing using technologies like Ray, Spark, LanceDB, or similar.
Deliver end-to-end data mining solutions that span onboard (C++) and offboard (ML & Data Infra) infrastructure to accelerate AV product development.
Develop e2e solution for real-time semantic search services (text/images/videos) and vector DBs.
Discover and identify key issues in existing ML infra and proactively improve system performance.
Build low latency/high throughput batch or stream processing pipelines.
Drive technical discussions across multiple orgs and deliver solutions on a timely basis.
Write readable and high-performance Python/C++ code.

Qualifications:

Experience with both ML platforms and building ML-based applications.
5+ years of relevant domain experience.
Proven track record of building scalable, reliable infrastructure in a fast-paced environment.
Deep understanding of design trade-offs with the ability to articulate those trade-offs and achieve alignment with others.
Hands-on background in developing semantic search infrastructure, generating multimodal (video/image/audio) embeddings, and managing vector databases.
Experience with multi-modal data indexing, model training infrastructure, model optimization, or large data processing pipelines.
Experience in building ML models or infrastructure in autonomous vehicles, perception, and decision-making domains (desirable but not required).

We are proud to be an equal opportunity workplace. We believe that diverse teams produce the best ideas and outcomes. We are committed to building a culture of inclusion, entrepreneurship, and innovation across gender, race, age, sexual orientation, religion, disability, and identity.

Check out our Privacy Policy.

Please Note: Pursuant to its business activities and use of technology, Stack AV complies with all applicable U.S. national security laws, regulations, and administrative requirements, which can restrict Stack AV’s ability to employ certain persons in certain positions pursuant to a range of national security-related requirements. As such, this position may be contingent upon Stack AV verifying a candidate’s residence, U.S. person status, and/or citizenship status. This position may also involve working with software and technologies subject to U.S. export control regulations. Under these regulations, it may be necessary for Stack AV to obtain a U.S. government export license prior to releasing its technologies to certain persons. If Stack AV determines that a candidate’s residence, U.S. person status, and/or citizenship status will require a license, prohibit the candidate from working in this position, or otherwise be subject to national security-related restrictions, Stack AV expressly reserves the right to either consider the candidate for a different position that is not subject to such restrictions, on whatever terms and conditions Stack AV shall establish in its sole discretion, or, in the alternative, decline to move forward with the candidate’s application.

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More about this job

Skills

ML
Data engineering
Data mining
Apache Spark
Machine learning
Python
C++
Process data
Decision making
Security regulations

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Work requirements

Jobs in the United States