Trajectory tech stack
Trajectory builds mostly with TypeScript, JavaScript. Its stack also includes OpenAI, Hugging Face, JAX, PyTorch. OpenAI is named in 6 of the 6 job postings Trajectory published in the last 12 months (100%). Counted by Alion from the job postings of Trajectory, updated Oct 2, 2026.
What programming languages does Trajectory use?
TypeScript is named in 17% of job postings at Trajectory, followed by JavaScript (17%).
TypeScript
1 17%
JavaScript
1 17%
What frameworks and libraries does Trajectory use?
JAX is named in 17% of job postings at Trajectory, followed by PyTorch (17%), React.js (17%).
What cloud and platforms does Trajectory use?
OpenAI is named in 100% of job postings at Trajectory, followed by Hugging Face (83%), Figma (17%), GitHub (17%).
What developer tools does Trajectory use?
Claude Code is named in 100% of job postings at Trajectory, followed by Braintrust (83%), Windsurf (83%).
Which engineering practices does Trajectory ask for?
AI Agents is named in 100% of job postings at Trajectory, followed by Post-training (17%).
AI Agents
6 100%
What does each Trajectory team work with?
The technologies each team's postings require most often, with the number of postings that require them.
AI/ML
4 postingsHow does your stack fit Trajectory?
How modern is the Trajectory stack?
Trajectory scores 77 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 0; legacy ones: 0.
Companies with a stack like Trajectory
Questions about the Trajectory tech stack
What programming languages does Trajectory use?
The languages named in Trajectory job postings are TypeScript (17%), JavaScript (17%), as a share of the 6 postings of the last 12 months.
Does Trajectory use OpenAI?
Yes. OpenAI is named in 6 of 6 job postings (100%) and required in 5 of them.
What cloud and platforms does Trajectory use?
The cloud and platforms named in Trajectory job postings are OpenAI (6), Hugging Face (5), Figma (1) (postings in brackets).
What skills do you need for a AI/ML job at Trajectory?
AI/ML postings at Trajectory most often require Windsurf (4), Braintrust (3), Claude Code (3), Hugging Face (3), out of 4 postings in the last 12 months.
Is the Trajectory tech stack changing?
No new technology has appeared in Trajectory job postings in the last six months.
How modern is the Trajectory tech stack?
Trajectory scores 77 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 0; legacy ones: 0.
How does Alion know the Trajectory tech stack?
Alion reads every job posting Trajectory publishes and tags the technologies each one names. The figures on this page count the 6 postings of the last 12 months and were updated on Oct 2, 2026.
Method and citation
Alion reads every job posting the company publishes and tags the technologies each one names. Shares count the postings of the last 12 months, open and closed; the company's own products are counted apart. How we count
Alion, "Trajectory tech stack: 14 technologies from 6 job postings", as of Oct 2, 2026. https://alion.io/company/trajectory-2/technologies