Citizen tech stack
Citizen builds mostly with Swift, Go, Python. Its stack also includes BigQuery, Google BigQuery, Crashlytics, Figma. Swift is named in 2 of the 4 job postings Citizen published in the last 12 months (50%). Counted by Alion from the job postings of Citizen, updated Sep 26, 2026.
What programming languages does Citizen use?
Swift is named in 50% of job postings at Citizen, followed by Go (25%), Python (25%).
What frameworks and libraries does Citizen use?
SwiftUI is named in 25% of job postings at Citizen.
SwiftUI
1 25%
What databases does Citizen use?
BigQuery is named in 50% of job postings at Citizen, followed by Google BigQuery (50%), MySQL (25%), PostgreSQL (25%).
BigQuery 
What cloud and platforms does Citizen use?
Crashlytics is named in 25% of job postings at Citizen, followed by Figma (25%), GCP (25%), Google GKE (25%).
What developer tools does Citizen use?
Bitrise is named in 25% of job postings at Citizen, followed by Model Context Protocol (25%), SPM (25%), TestFlight (25%).
Which engineering practices does Citizen ask for?
Human-in-the-Loop is named in 50% of job postings at Citizen, followed by AI Agents (25%), LLM Guardrails (25%).
How does your stack fit Citizen?
How is the Citizen 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 Citizen stack?
Citizen scores 70 out of 100 (Modern). 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 common is the Citizen stack in its industry?
Share of the 47 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like Citizen
Questions about the Citizen tech stack
What programming languages does Citizen use?
The languages named in Citizen job postings are Swift (50%), Go (25%), Python (25%), as a share of the 4 postings of the last 12 months.
Does Citizen use BigQuery?
Yes. BigQuery is named in 2 of 4 job postings (50%) and required in 2 of them.
What cloud and platforms does Citizen use?
The cloud and platforms named in Citizen job postings are Crashlytics (1), Figma (1), GCP (1) (postings in brackets).
Is the Citizen tech stack changing?
Yes. BigQuery, Google BigQuery, Swift first appeared in Citizen job postings in the last six months.
How modern is the Citizen tech stack?
Citizen scores 70 out of 100 (Modern). 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 Citizen tech stack?
Alion reads every job posting Citizen publishes and tags the technologies each one names. The figures on this page count the 4 postings of the last 12 months and were updated on Sep 26, 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, "Citizen tech stack: 21 technologies from 4 job postings", as of Sep 26, 2026. https://alion.io/company/citizen-2/technologies