Post-training jobs hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $325,849/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.
abundant.ai • HQ: San Francisco, United States • Reinforcement Learning • AI Training Data & Annotation • Startup • Hiring 9
HQ: San Francisco, United States • Reinforcement Learning • AI Training Data & Annotation • Startup • Hiring 9
Abundant is an applied research lab focused on scaling reinforcement learning for safe and reliable agentic capabilities. It provides environments and datasets for reinforcement learning to leading AI labs and hires researchers and alignment specialists. The company is headquartered in San Francisco, United States.
vertiv.com • HQ: Westerville, United States • HVAC & Refrigeration • Power Supplies & Power Electronics • Servers & Data Center Hardware • 5000+ employees • Est. 2016 • Trust B • Hiring 1558, 135 new
HQ: Westerville, United States • HVAC & Refrigeration • Power Supplies & Power Electronics • Servers & Data Center Hardware • 5000+ employees • Est. 2016 • Trust B • Hiring 1558, 135 new
Vertiv is an American company that supplies the power and cooling infrastructure data centres depend on, formed in 2016 when Emerson Electric sold its network power division to Platinum Equity. Its products cover uninterruptible power supplies, switchgear and busway, precision air and liquid cooling, racks and the monitoring software that runs them, sold to hyperscale operators, colocation providers and enterprises. Headquartered in Westerville, Ohio and listed on the New York Stock Exchange, it has become one of the most direct beneficiaries of artificial intelligence build-out because dense computing requires liquid cooling it already makes.
We're Fetch - vets, data whizzes, techies, and insurance experts transforming the way we care for our pets. Working with dozens of Aussie pet parents and vets, we've rethought the system to be easier, fairer, and more connected. We're building a subscription and accompanying app that brings together insurance, prevention, insights, and rewards to simplify pet health and help more Aussie pets thrive.
afterquery.com • HQ: San Francisco, United States • LLM & Generative AI • Foundation Models • Artificial Intelligence • 201-500 employees • Startup • Trust B • Hiring 30
HQ: San Francisco, United States • LLM & Generative AI • Foundation Models • Artificial Intelligence • 201-500 employees • Startup • Trust B • Hiring 30
AfterQuery captures how experts reason and turns real-world professional work into high-quality training data for frontier foundation models.
aisi.gov.uk • HQ: London, United Kingdom • AI Governance & Compliance • AI Research Labs • AI Safety & Alignment • Est. 2023 • Hiring 4
HQ: London, United Kingdom • AI Governance & Compliance • AI Research Labs • AI Safety & Alignment • Est. 2023 • Hiring 4
The AI Security Institute is the United Kingdom government body that tests advanced artificial intelligence models for risks relevant to national security and public safety. Its researchers run pre deployment evaluations together with frontier laboratories, covering cyber offence capability, chemical and biological uplift, autonomous replication and the robustness of model safeguards. The institute publishes its evaluation methodology and the Inspect open source testing framework, and it funds external alignment research through a dedicated grant programme.
langchain.com • HQ: San Francisco, United States • LLM & Generative AI • AI Development Tools • AI Evaluation & Observability • AI Agents • 1001-5000 employees • Est. 2023 • Trust A • Hiring 104, 7 new
HQ: San Francisco, United States • LLM & Generative AI • AI Development Tools • AI Evaluation & Observability • AI Agents • 1001-5000 employees • Est. 2023 • Trust A • Hiring 104, 7 new
LangChain is an American company founded in 2023 around an open source framework of the same name that became, almost by accident, the default way developers chained language model calls into working applications. It has since built commercial products around the framework: LangSmith for tracing, evaluating and monitoring model applications, and LangGraph for building stateful agent workflows, on the argument that the hard part is not calling a model but knowing whether the result was any good. Headquartered in San Francisco and backed at a multi-billion dollar valuation, it monetises observability and orchestration rather than the framework itself.
plus.ai • HQ: Santa Clara, United States • Road Transport • Autonomous Driving • 201-500 employees • Est. 2016 • Trust C • Hiring 41
HQ: Santa Clara, United States • Road Transport • Autonomous Driving • 201-500 employees • Est. 2016 • Trust C • Hiring 41
PlusAI is an autonomous driving technology company headquartered in Santa Clara, California, that develops SuperDrive virtual driver software for factory-built autonomous heavy trucks together with truck makers, plus the HyperFoundry AI data platform. Founded in 2016, it runs a testing facility in Fremont and operations in Texas, keeps a European head office in Munich, and in 2025 agreed to go public through a merger with Churchill Capital Corp IX. Its openings are mainly for research and machine learning engineers in motion planning, reinforcement learning and vision-language-action models, software verification and validation engineers, data engineers and program managers.
baidu.com • HQ: Beijing, China • Advertising • Foundation Models • Cloud Platforms (IaaS & PaaS) • Autonomous Driving • LLM & Generative AI • Search Engines • 5000+ employees • Est. 2000 • MOEX: BIDU-RM • Trust C • Hiring 1350, 39 new
HQ: Beijing, China • Advertising • Foundation Models • Cloud Platforms (IaaS & PaaS) • Autonomous Driving • LLM & Generative AI • Search Engines • 5000+ employees • Est. 2000 • MOEX: BIDU-RM • Trust C • Hiring 1350, 39 new
Baidu is a Chinese technology company founded in 2000 by Robin Li and Eric Xu that operates the dominant search engine in mainland China. Around search it has built a large advertising business, the Baidu Maps and Baijiahao content platforms, and an AI Cloud division selling compute, data and model services to enterprises and government. The company was one of the first Chinese firms to commit heavily to artificial intelligence, developing the ERNIE family of large language models and the Apollo autonomous driving stack that powers its Apollo Go robotaxi fleet in several Chinese cities.
sieve.ai • HQ: San Francisco, United States • Generative Video • Computer Vision • Photo & Video Editing Software • 11-50 employees • Est. 2016 • Trust A • Hiring 13, 2 new
HQ: San Francisco, United States • Generative Video • Computer Vision • Photo & Video Editing Software • 11-50 employees • Est. 2016 • Trust A • Hiring 13, 2 new
Sieve is a video artificial intelligence infrastructure company headquartered in San Francisco, California, and founded in 2021. The company provides APIs and a serverless runtime for video understanding and generation tasks such as transcription, dubbing, object tracking, background removal, and highlight extraction. It sells to developers building video products who would otherwise assemble and host several separate models themselves.
snorkel.ai • HQ: Redwood City, United States • MLOps • Machine Learning • AI Training Data & Annotation • Est. 2019 • Startup • Trust A • Hiring 46, 3 new
HQ: Redwood City, United States • MLOps • Machine Learning • AI Training Data & Annotation • Est. 2019 • Startup • Trust A • Hiring 46, 3 new
Snorkel AI was founded in 2019 by Stanford researchers who developed programmatic labelling, where subject matter experts write rules that generate training data instead of annotating examples by hand. Its platform now covers data curation, model fine-tuning and expert evaluation for enterprise and frontier model builders. Banks, insurers and government agencies use it to specialise models on proprietary knowledge.
inmobi.com • HQ: Bengaluru, India • Advertising • 501-1000 employees • Est. 2007 • Trust A • Hiring 62, 2 new
HQ: Bengaluru, India • Advertising • 501-1000 employees • Est. 2007 • Trust A • Hiring 62, 2 new
InMobi is a global adtech and consumer technology multinational headquartered in Bengaluru, India, with a major corporate presence in Singapore, San Francisco, and London. Founded in 2007 (originally as mKhoj), it made history in 2011 by becoming India's first unicorn startup.
generalrobotics.com • Redmond • Robotic Software & Control Systems • Military Robotics • Trust B • Hiring 13
Redmond • Robotic Software & Control Systems • Military Robotics • Trust B • Hiring 13
General Robotics builds the GRID platform for physical AI and robotics and delivers robotics projects for customers. Its engineers work on manipulation, humanoid, teleoperation and field robotics as well as technical art, with teams in Redmond and Singapore. The company is based in the United States.
horizon3.ai • HQ: San Francisco, United States • Vulnerability Management • Cybersecurity AI • Penetration Testing • 1001-5000 employees • Est. 2019 • Trust B • Hiring 134, 13 new
HQ: San Francisco, United States • Vulnerability Management • Cybersecurity AI • Penetration Testing • 1001-5000 employees • Est. 2019 • Trust B • Hiring 134, 13 new
Horizon3.ai is a cybersecurity company that specializes in autonomous threat detection and proactive security validation. Its flagship platform, NodeZero, acts as an autonomous penetration testing solution that continuously discovers, tests, and verifies exploitable vulnerabilities across an organization's internal and external infrastructure. By simulating real-world attacker tactics, Horizon3.ai enables IT and security teams to fix critical security gaps before adversaries can exploit them.
scale.com • HQ: San Francisco, United States • LLM & Generative AI • AI Evaluation & Observability • AI Training Data & Annotation • 1001-5000 employees • Est. 2016 • Trust B • Hiring 166, 7 new
HQ: San Francisco, United States • LLM & Generative AI • AI Evaluation & Observability • AI Training Data & Annotation • 1001-5000 employees • Est. 2016 • Trust B • Hiring 166, 7 new
Scale AI is an American company founded in San Francisco in 2016 that supplies the training data, evaluation and tooling behind large artificial intelligence systems. It began with human-labelled annotation for autonomous driving and computer vision, then expanded into reinforcement learning from human feedback, expert data generation, model evaluation and full-stack deployment platforms for enterprises and governments. In 2025 Meta acquired a large minority stake and hired co-founder Alexandr Wang, after which the company continued under new leadership serving defence, public sector and commercial customers.
hume.ai • HQ: New York, United States • AI Training Data & Annotation • AI Evaluation & Observability • Speech & Audio AI • 51-200 employees • Est. 2021 • Startup • Hiring 9
HQ: New York, United States • AI Training Data & Annotation • AI Evaluation & Observability • Speech & Audio AI • 51-200 employees • Est. 2021 • Startup • Hiring 9
Real human ratings, in a single API call. The human evaluation layer for voice, speech, and conversational AI.
analog.com • HQ: Wilmington, United States • Sensors & Transducers • Analog & Power Semiconductors • 5000+ employees • Est. 1965 • Trust B • Hiring 672, 45 new
HQ: Wilmington, United States • Sensors & Transducers • Analog & Power Semiconductors • 5000+ employees • Est. 1965 • Trust B • Hiring 672, 45 new
Analog Devices designs signal processing, power management and sensing semiconductors. Its data converters and amplifiers are staples of industrial automation, automotive and communications systems. The company expanded significantly through the acquisitions of Linear Technology and Maxim Integrated.
reflection.ai • HQ: New York, United States • AI Research Labs • Foundation Models • 501-1000 employees • Est. 2024 • Startup • Trust A • Hiring 42, 2 new
HQ: New York, United States • AI Research Labs • Foundation Models • 501-1000 employees • Est. 2024 • Startup • Trust A • Hiring 42, 2 new
Reflection AI is a company founded in 2024 by former Google DeepMind researchers who worked on AlphaGo and large language models. It builds autonomous coding agents and has committed to releasing frontier open-weight models as an American counterweight to Chinese open model releases. The company raised a very large round in 2025 to fund training at frontier scale.
≈ $212k – $425k per year (Estimated) • Equity • Staff+ • In office (San Francisco, New York, United States, London, United Kingdom) • Master's Degree • Full-Time • Staff • English
≈ $189k – $380k per year (Estimated) • Equity • Staff+ • In office (New York, San Francisco, United States, London, United Kingdom) • Bachelor's Degree • Full-Time • Staff
≈ $205k – $411k per year (Estimated) • Equity • Staff+ • In office (San Francisco, New York, United States, London, United Kingdom) • Full-Time • Staff
