1st Source tech stack
1st Source builds mostly with SQL, SAS, Visual Basic. Its stack also includes Windows, Power BI. Windows is named in 25 of the 28 job postings 1st Source published in the last 12 months (89%). Counted by Alion from the job postings of 1st Source, updated Oct 16, 2026.
What programming languages does 1st Source use?
SQL is named in 7% of job postings at 1st Source, followed by SAS (4%), Visual Basic (4%).
SAS 
What cloud and platforms does 1st Source use?
Windows is named in 89% of job postings at 1st Source, followed by Power BI (4%), Tableau (4%).
What developer tools does 1st Source use?
Microsoft Excel is named in 7% of job postings at 1st Source.
Which engineering practices does 1st Source ask for?
A/B Testing is named in 4% of job postings at 1st Source.
How does your stack fit 1st Source?
How is the 1st Source 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 1st Source stack?
1st Source scores 58 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: 1.
How common is the 1st Source stack in its industry?
Share of the 1,096 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like 1st Source
Questions about the 1st Source tech stack
What programming languages does 1st Source use?
The languages named in 1st Source job postings are SQL (7%), SAS (4%), Visual Basic (4%), as a share of the 28 postings of the last 12 months.
Does 1st Source use Windows?
Yes. Windows is named in 25 of 28 job postings (89%) and required in 25 of them.
What cloud and platforms does 1st Source use?
The cloud and platforms named in 1st Source job postings are Windows (25), Power BI (1), Tableau (1) (postings in brackets).
Is the 1st Source tech stack changing?
Yes. Microsoft Excel, Windows first appeared in 1st Source job postings in the last six months.
How modern is the 1st Source tech stack?
1st Source scores 58 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: 1.
How does Alion know the 1st Source tech stack?
Alion reads every job posting 1st Source publishes and tags the technologies each one names. The figures on this page count the 28 postings of the last 12 months and were updated on Oct 16, 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, "1st Source tech stack: 8 technologies from 28 job postings", as of Oct 16, 2026. https://alion.io/company/1stsource-com/technologies