Remote
Anywhere
$210K–$240K
💻Engineering
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Senior ML Engineer (Applied AI)
🔹 100% remote | 🌎 Global team | ⏳ Full-time
NineTwoThree AI Studio is a premier product design, engineering, and marketing firm specializing in custom AI, web, and mobile applications for established brands and funded startups. We are based in Massachusetts but with an American and European staff and a strong, collaborative remote culture.
We’re a team that loves doing good work with great people. Our relatively small size keeps us fast and nimble. The wealth of knowledge, experience and talent paired with proven recipes and best practices allows us to find opportunities to help new products succeed.
With a portfolio of over 150 launched products over 13 years, NineTwoThree has garnered recognition as a top AI agency in the U.S., earning accolades such as inclusion in the Inc. 5000 list for four consecutive years and being named among the top 50 AI firms alongside industry leaders like Microsoft, NVIDIA, and IBM. We’ve built AI and ML tech for big brands like Consumer Reports, FanDuel, and Nara, as well as startups in legal tech, logistics, education, and more.
As a Senior ML Engineer at NineTwoThree AI Studio, you will sit at the intersection of production-grade software engineering, advanced natural language processing, and client delivery. We build custom, high-impact AI systems for brands and startups across diverse industries (such as healthcare, logistics, and fintech).
Instead of siloed academic research, this role demands a product-minded builder. You will design, optimize, and deploy robust LLM applications, custom predictive analytics, and agentic workflows directly into our clients' software ecosystems, taking absolute ownership of features from prototype to production.
We value your time and ours and make the process fast and easy. Our interview process takes the following steps: a short interview with the HR, 2nd technical interview with ML Engineer and CTO (optional), 3rd live-coding interview, Offer.
Performance Bonus
PTO / Vacation
Sick Days
Paid Holidays
Flexible Hours
Parental Leave
Certification Support
Learning & Development Budget
Mentorship Program
Defined Career Pathways
Each open role is scoped to a single country rather than being open worldwide, so the eligible location is whatever the posting names. There is no published company-wide list of countries you can be hired in, and openings have appeared in both Europe and the Americas, so the role you are applying to is the thing to check.
The company does not publish a required number of overlap hours, so there is no stated block of the day you have to be online with the rest of the team. The constraint is meeting-shaped instead: internal and client meetings sit in western European or Eastern American working hours, and because this is client-services work, some of that timing is set by the client rather than internally. Headquarters is in the Eastern Time Zone and each role is scoped to one country, so how much of your day those windows cover depends on where the role is based. Outside them you choose your own hours.
The careers page lists 20 working days of paid time off per year for the first three years, rising to 25 days after that, plus 5 days of paid sick leave and 10 national holidays of your own choosing.
Yes. NineTwoThree reimburses expenses for professional development courses and certifications, and the careers page describes constant learning through tools and mentorship as part of the job rather than a side benefit.
No. There are no salary bands, ranges, or pay-transparency statements on the careers page, so compensation is something you discuss directly during the hiring process. They do state the engagement model up front: payment runs through Deel for W2 employees, direct contractors and 1099 contracts.
