Light tech stack
Light builds mostly with Ruby, Python, JavaScript. Its stack also includes AWS, ElasticSearch, Ruby on Rails, Amazon CloudWatch. Ruby is named in 2 of the 3 job postings Light published in the last 12 months (67%). Counted by Alion from the job postings of Light, updated Oct 1, 2026.
What programming languages does Light use?
Ruby is named in 67% of job postings at Light, followed by Python (33%), JavaScript (33%).
What frameworks and libraries does Light use?
Ruby on Rails is named in 67% of job postings at Light, followed by React Native (33%), Django (33%), React.js (33%).
What databases does Light use?
ElasticSearch is named in 67% of job postings at Light.
ElasticSearch
2 67%
What cloud and platforms does Light use?
AWS is named in 67% of job postings at Light, followed by Amazon CloudWatch (33%), Sentry (33%).
What developer tools does Light use?
Claude Code is named in 33% of job postings at Light, followed by Cursor (33%), OpenAI Codex (33%), Docker (33%).
What AI and ML technologies does Light use?
LLM is named in 67% of job postings at Light, followed by ChatGPT (33%).
Which engineering practices does Light ask for?
A/B Testing is named in 33% of job postings at Light, followed by ETL/ELT (33%), Prompt Engineering (33%), Semantic Search (33%).
Prompt Engineering
1 33%
Semantic Search
1 33%
Embeddings
1 33%
How does your stack fit Light?
How is the Light stack changing?
Read from the dates of the postings themselves: a technology is new when the first posting that names it appeared in the last six months, rising or falling when its share of postings moved between the last two quarters.
How modern is the Light stack?
Light scores 87 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: 2; legacy ones: 0.
How common is the Light stack in its industry?
Share of the 947 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like Light
Questions about the Light tech stack
What programming languages does Light use?
The languages named in Light job postings are Ruby (67%), Python (33%), JavaScript (33%), as a share of the 3 postings of the last 12 months.
Does Light use Ruby on Rails?
Yes. Ruby on Rails is named in 2 of 3 job postings (67%) and required in 1 of them.
What cloud and platforms does Light use?
The cloud and platforms named in Light job postings are AWS (2), Amazon CloudWatch (1), Sentry (1) (postings in brackets).
Is the Light tech stack changing?
Yes. LLM, Ruby on Rails, AWS, ElasticSearch first appeared in Light job postings in the last six months.
How modern is the Light tech stack?
Light scores 87 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: 2; legacy ones: 0.
How does Alion know the Light tech stack?
Alion reads every job posting Light publishes and tags the technologies each one names. The figures on this page count the 3 postings of the last 12 months and were updated on Oct 1, 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, "Light tech stack: 23 technologies from 3 job postings", as of Oct 1, 2026. https://alion.io/company/light-blog/technologies