Firstup tech stack
Firstup builds mostly with Ruby, JavaScript, Node JS, SQL. Its stack also includes AWS, Ruby on Rails, GCP, React.js. Ruby is named in 9 of the 14 job postings Firstup published in the last 12 months (64%). Counted by Alion from the job postings of Firstup, updated Oct 17, 2026.
What programming languages does Firstup use?
Ruby is named in 64% of job postings at Firstup, followed by JavaScript (50%), Node JS (43%), SQL (36%).
What frameworks and libraries does Firstup use?
Ruby on Rails is named in 50% of job postings at Firstup, followed by React.js (36%), Commander.js (7%), Cypress (7%).
What databases does Firstup use?
Amazon Redshift is named in 29% of job postings at Firstup, followed by Snowflake (29%), StarRocks (29%), Trino (29%).
What cloud and platforms does Firstup use?
AWS is named in 64% of job postings at Firstup, followed by GCP (36%), Databricks (29%), Apache Kafka (29%).
AWS
9 64%
GCP
5 36%
Databricks
4 29%
Apache Kafka
4 29%
Spark
4 29%
Kubernetes
4 29%
Datadog
3 21%
Show all (14)
What developer tools does Firstup use?
Docker is named in 21% of job postings at Firstup, followed by Copilot (14%), Helm (14%), CircleCI (7%).
Docker
3 21%
Copilot
2 14%
Helm
2 14%
CircleCI
1 7%
Rest API
1 7%
Terraform
1 7%
Vite
1 7%
Show all (9)
What AI and ML technologies does Firstup use?
LLM is named in 29% of job postings at Firstup, followed by Claude (21%), ChatGPT (7%), Gemini (7%).
Which engineering practices does Firstup ask for?
AI Agents is named in 14% of job postings at Firstup, followed by SLI/SLO/SLA (14%), Agentic Workflows (7%), Anomaly Detection (7%).
AI Agents
2 14%
SLI/SLO/SLA
2 14%
Anomaly Detection
1 7%
CI/CD
1 7%
Incident Management
1 7%
Shift-Left
1 7%
What does each Firstup team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
4 postingsData Science
4 postingsHow does your stack fit Firstup?
How is the Firstup 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 Firstup stack?
Firstup scores 86 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: 4; legacy ones: 0.
How common is the Firstup stack in its industry?
Share of the 160 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Firstup apart
Companies with a stack like Firstup
Questions about the Firstup tech stack
What programming languages does Firstup use?
The languages named in Firstup job postings are Ruby (64%), JavaScript (50%), Node JS (43%), SQL (36%), TypeScript (36%), as a share of the 14 postings of the last 12 months.
Does Firstup use Ruby on Rails?
Yes. Ruby on Rails is named in 7 of 14 job postings (50%) and required in 4 of them.
What cloud and platforms does Firstup use?
The cloud and platforms named in Firstup job postings are AWS (9), GCP (5), Databricks (4) (postings in brackets).
What skills do you need for a Backend job at Firstup?
Backend postings at Firstup most often require Node JS (4), Ruby (4), TypeScript (4), React.js (2), out of 4 postings in the last 12 months.
Is the Firstup tech stack changing?
Yes. Amazon Redshift, Databricks, Snowflake, StarRocks first appeared in Firstup job postings in the last six months.
How modern is the Firstup tech stack?
Firstup scores 86 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: 4; legacy ones: 0.
How does Alion know the Firstup tech stack?
Alion reads every job posting Firstup publishes and tags the technologies each one names. The figures on this page count the 14 postings of the last 12 months and were updated on Oct 17, 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, "Firstup tech stack: 52 technologies from 14 job postings", as of Oct 17, 2026. https://alion.io/company/firstup-io/technologies