Senior Full Stack JS Engineer

Why Join Us?

🔹 100% remote| 🌎 Global team| ⏳ Full-time

Ifyou’re looking towork on
cutting-edge AI products
, solve
challenging problems
, and bepartofafast-moving,
high-talent team
, you’ll love ithere.

Join Nine Two Three  AIStudio, a
remote-first
product design, engineering, and marketing studio, founded in2012 and based in Boston. Webuild
AI-powered web and mobile apps
for big brands and fast-moving startups.

You’ll work with
really smart people
— the kind of teammates who challenge you, push you forward, and make you better. Wemove
fast
and focus on
getting things done
.
We’ve been
growing
20% every year
for the last 5years, which means there’s plenty ofroom for career growth and promotions. Our work speaks for itself—someofour customers foundus through
five layers of referrals
. That’s how much people appreciate what wedo.

Werun on
clear processes
and strong leadership, sowhile wemove quickly, we
don’t dochaos
. Wedohigh-quality work, and wedoitright.

Wefocus on products with apositive impact invarious domains from
sports and health, to logistics and nuclear
. But ifyou’re into gambling, adult entertainment, orcrypto, we’re not your place.

Lead, not just code
— Seniors atNine Two Three  don’t just write great code—they lead projects, guide teams, and ensure execution quality:

• Connect the dots
  between product vision, technical feasibility, and business needs.
• Communicate
  options, trade-offs, costs, and timelines clearly toboth our team and client.
• Lead projects end-to-end
  — from technical strategy to execution.
• Architect solutions
  and apply best practices for scalable, AI-powered products.
• Guide and mentor
  engineers, ensuring quality while delivering fast.
• Translate business needs into
  technical decisions
  , explaining trade-offs and timelines.
• Solve hard problems
  , direct implementation, and coordinate technical challenges with clients

Who We’re Looking For
True senior
engineers— not just people with years of experience, but those who
own
solutions and
drive
execution.

• 5+years of experience
  inFull Stack Software Development (React, Node.js, Python, SQL)
• Strong knowledge of
  cloud platforms
  (AWS, Azure orGCP).
• Clear and thorough understanding of
  design patterns
  and software development
  best practices
• Great communicators
  who can explain options, trade-offs, and technical details toclients and teams.
• Ability tobreak down complex problems into manageable tasks;
• Passion maintaining code style and standards and holding people accountable;
• Hands-on experience with microservices architecture;
• Experience with React.js, Node.js, JavaScript and Typescript (atleast 5years);
• RESTful API design and implementation;
• OAuth and single sign-on (SAML);
• Leaders who
  ensure execution quality
  , push teams forward, and keep projects ontrack.
• Strong communication and analytical skills
• Relational and no-SQL databases— MySQL, PostgreSQL, Redis etc;
• Solid understanding of
  principles
  of JavaScript/Type Script languages
• Ability to
  freely express
  /present/discuss ideas in English (B2-C1level)
• Flexibility with working hours to participate in meetings with Eastern USA.

🚫
Not for you
? Ifyou’re looking for apure coding role where someone else makes the decisions, this isn’t it.

• Annual paid vacation:
  20days-off
  per year during the first 3years, further increasing to
  25days
  inlater years.
• Paid sick leave,
  10national holidays
  and
  2company
  days-off.
• Well-being
  budget.
• Maternity/paternity
  leave.
• Accounting assistance.
• Reimbursement of expenses for professional development
  courses/certifications
  (upto
  100% in agreement with the Manager).
• Hardware upon business needs.
• Strong positive
  engineering culture
  , atightly-knit team of professionals with a
  good sense ofhumor
  .

Wemake the process fast and responsive. Short HR interview, Technical Q&A, Hands-on Practical Session (nobubble sorts), CTO interview (sometimes), Offer.

Apply now
and lead the next generation ofAI-powered products.