Jobs in the United States

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Added 1 hour ago
TT
Product Engineer
True Talent Solutions Partners
San Francisco, CA
- $185,000 to $485,000 USD / year
Join a startup support organization's engineering team to build full-stack products for admissions, events, and internal operations. You will work closely with operational teams and own…
Added 1 hour ago
TT
Full Stack Engineer
True Talent Solutions Partners
San Francisco, CA
- $230,000 to $300,000 USD / year
…reliability of AI agents in production. In this backend-leaning full-stack role, you will work closely with customers and turn real-world agent challenges into polished product…
Added 1 hour ago
TT
Founding Senior Engineer
True Talent Solutions Partners
New York, NY
- $175,000 to $225,000 USD / year
- Own full-stack development of the growth engine, with a focus on backend systems and infrastructure.
Added 2 hours ago
IG
Principal Engineer, Populus.ai and Elevate Platform
IPS Group Inc.
Remote, United States
- $125,000 to $160,000 USD / year
The Principal Engineer is the technical owner of the platform behind Populus.ai and Elevate, combining two roles in one: the platform's architect and its lead hands-on developer. You will…
Added 2 hours ago
Professional Services Data Center Deployment Engineer
Penguin Solutions
Durham, NC
…end-to-end services, and industry-leading partner solutions in a full-stack AI factory platform designed to help customers deploy and scale AI workloads with speed and…
Added 2 hours ago
C
Senior Full-Stack Engineer – E-commerce (Shopify)
CORSAIR
Milpitas, CA
- $170,000 to $185,000 USD / year
Strong communication skills - able to clearly describe a feature, and walk through an entire tech stack architecture, for both technical and non-technical audiences
Added 3 hours ago
BV
Mobile QA Engineer
Bright Vision Technologies
Fremont / East Bay, CA
- $115,000 to $165,000 USD / year
Position Type: Full-time, Direct W2 - [Not open to C2C or 1099]
Added 3 hours ago
BV
Data Quality Engineer
Bright Vision Technologies
Fremont / East Bay, CA
- $115,000 to $165,000 USD / year
Position Type: Full-time, Direct W2 - [Not open to C2C or 1099]
Added 3 hours ago
BV
Data Science Engineer
Bright Vision Technologies
Frisco / North Dallas, TX
- $115,000 to $165,000 USD / year
Position Type: Full-time, Direct W2 - [Not open to C2C or 1099]
Added 3 hours ago
BV
Lead Data Engineer
Bright Vision Technologies
Edison / Middlesex County, NJ, NJ
- $115,000 to $165,000 USD / year
Position Type: Full-time, Direct W2 - [Not open to C2C or 1099]
Added 3 hours ago
BV
Analytics Engineer
Bright Vision Technologies
Frisco / North Dallas, TX
- $115,000 to $165,000 USD / year
Bright Vision Technologies is seeking a Analytics Engineer to design, develop, test, and support enterprise software applications and services using the technology stack relevant to the…
Added 3 hours ago
BV
Senior Data Engineer
Bright Vision Technologies
Sunnyvale / South Bay, CA
- $115,000 to $165,000 USD / year
Position Type: Full-time, Direct W2 - [Not open to C2C or 1099]
Added 3 hours ago
BV
Data Engineer
Bright Vision Technologies
Sunnyvale / South Bay, CA
- $115,000 to $165,000 USD / year
Position Type: Full-time, Direct W2 - [Not open to C2C or 1099]
Added 3 hours ago
Systems Engineer, Platform Engineering
Quanta Services Management Partnership
Houston, TX
…development position on the Platform Engineering team: you’ll build full-stack features, ship apps on Databricks, and extend our tooling’s AI-assisted…
Added 3 hours ago
Senior Software Engineer
Bread Financial Payments, Inc
Columbus, OH
The Senior Software Engineer is responsible for developing and enhancing financial technology solutions by translating requirements into functional software. Engineers in this role actively…
Added 3 hours ago
Research Engineer, Post-Training
Actively AI
NY
Post-Training Recipe Development: Iterate on the full stack of datasets, training stages, and hyperparameters that determine model behavior. Measure how choices compound across evals and…
Added 3 hours ago
Senior Full Stack Engineer
Vizient, Inc.
Irving, TX
Added 3 hours ago
Lead Software Engineer
TDS Telecom
Remote, United States
The Lead Software Engineer works independently or leads teams of 5 or more people responsible for application design, development, testing, and problem resolution work teams with…
Added 3 hours ago
Senior AI Engineer
USA-Medtronic MiniMed, Inc 1017
Atlanta, GA
MiniMed is building a lean, high-leverage AI & Data Science team. We are looking for a Senior AI Engineer who builds AI capabilities hands-on and sets the standard the rest of the team…
Added 3 hours ago
AI Engineer
AEEC
Reston, VA
We are seeking a skilled, mission-driven Mid-Level AI Engineer to support an Intelligence Community (IC) customer on mission-critical applications. In this role, you will ideate, prototype,…
Added 3 hours ago
Senior AI Engineer, Banking Technology
Citigroup
Jersey City, NJ
Full‑Stack AI Engineering: Build full‑stack applications integrating LLM‑driven workflows and AI coding tools (e.g., Devin, GitHub Copilot).
Added 4 hours ago
TT
Founding Full-Stack Engineer
True Talent Solutions Partners
San Francisco, CA
- $180,000 to $240,000 USD / year
- Full-stack experience with modern cloud platforms and tools such as TypeScript, Python, React, React Native, Node.js, AWS, GCP, Supabase, or Railway.
Added 4 hours ago
Senior AI Software Engineer
Wells Fargo Bank, N. A.
MCLEAN, VA
This engineering role is suited for candidates who can contribute across the full stack while also helping shape reusable patterns for MCP-enabled tools, skills, and agent-driven workflows.
Added 4 hours ago
Lead AI Software Engineer
Wells Fargo Bank, N. A.
MCLEAN, VA
This engineering role is suited for candidates who can contribute across the full stack while also helping shape reusable patterns for MCP-enabled tools, skills, and agent-driven workflows.
Added 4 hours ago
Senior Software Engineer
Western Governors University
Salt Lake City, UT
Join a team of experienced full-stack engineers working closely together in a highly collaborative environment.

Actively AI

Research Engineer, Post-Training

NY, United States

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Job details

Posting language: English
Posted: Nov 7, 2026

Original job description

About Actively AI

Actively AI is defining a new category: Intelligence-Led Revenue.

Revenue organizations have always been bottlenecked on human capacity. Reps triage which accounts get attention. Context disappears at every handoff. On any given day, the vast majority of accounts have exactly zero people thinking about them.

Actively addresses this at the structural level. Our platform deploys Per-Account AgentsTM across our customers’ TAM, working 24/7 to research, identify opportunities, and advance next steps without being asked. Leading enterprises including Ramp, Ironclad, and Samsara are already making this shift.

Our co-founders are former Stanford AI researchers, and the team comes from Harvard, CMU, Berkeley, Brex, Scale AI, and Google. We've raised $68M from TCV, First Harmonic, Bain Capital Ventures, First Round Capital, and more.

About the Role:

We're looking for research engineers to help accelerate post-training models specific to the GTM and sales domain. Our product which is used by thousands of sales reps and leaders daily across the entire lifecycle of prospecting, deal execution, expansion, and retention, and there is substantial insane demand for higher quality intelligence across these tasks. This role involves working directly with our founders to help us fine-tune intelligence and push the Pareto Frontier in our domain.

What You'll Accomplish

• Post-Training Recipe Development: Iterate on the full stack of datasets, training stages, and hyperparameters that determine model behavior. Measure how choices compound across evals and production performance, not just isolated benchmarks.

• Evaluation Design and Integrity: Build evals that actually capture what matters. The loop never ends: define, optimize, realize the gaps, and rebuild. You'll be responsible for making numbers go up and making sure the numbers mean something.

• Deep Understanding: When training produces results that don't make sense, you dig until you understand why. The goal isn't just to fix it; it's to carry that understanding forward to the next problem. This requires rapidly understanding domain context.

• Alignment and Agent Behavior: Apply and advance techniques like RLHF, RLAIF, and constitutional approaches to shape how agents reason, act, and collaborate with humans in long-horizon tasks.

• Scaling and Exploration: Measure how performance scales with data and compute, and develop new methodologies when existing ones hit ceilings. We expect both rigor and invention.

We are looking for evidence of:

• A track record of advancing ML systems through post-training, alignment, or related methods: RLHF, RLAIF, preference modeling, reward learning, or equivalent

• Strong fundamentals in probability, statistics, and ML theory. The ability to look at experimental data and distinguish real effects from noise and bugs

• Evidence of original contributions or working on similar problems in industry

• Unique ability to understand the end user tasks, domain, and build user empathy and intuition around judging what good, great, and bad looks like.

Why Join

At Actively, you write playbooks rather than follow them. You own outcomes, not just tasks, and see directly how your work changes what customers can do - across a product and go-to-market motion that is scaling fast.

The team is high-caliber and low-ego: people who work from first principles, move with urgency, and care deeply about building something that drives real value. If that's the kind of challenge you're looking for, Actively is the right place.

Benefits

🚀 Competitive Early-Stage Equity
⚕ Health, Dental, Vision Coverage
💡 Unlimited PTO + Recharge Days
🍽️ Catered Lunch on Tuesday & Friday, Dinners every day!
🍿 Fully Stocked Kitchen
💻 Cutting-Edge Tech & Tools
🌴 Annual Off-sites & Monthly Events
🚆 Commuter Benefits
🏢 Cozy Office in NYC

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Skills

Research
Sales
Cold calling
ML
Statistics

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