SIX tech stack
SIX builds mostly with Python, SQL, Java, JavaScript. Its stack also includes Kubernetes, Linux, Spring Boot, Angular. Python is named in 38 of the 92 job postings SIX published in the last 12 months (41%). Counted by Alion from the job postings of SIX, updated Nov 11, 2026.
What programming languages does SIX use?
Python is named in 41% of job postings at SIX, followed by SQL (30%), Java (22%), JavaScript (12%).
Python
38 41%
SQL
28 30%
Java
20 22%
JavaScript
11 12%
TypeScript
9 10%
Bash
5 5%
C++
3 3%
PowerShell
3 3%
Show all (14)
What frameworks and libraries does SIX use?
Spring Boot is named in 12% of job postings at SIX, followed by Angular (7%), OpenTelemetry (3%), Hibernate (2%).
Spring Boot
11 12%
Angular
6 7%
OpenTelemetry
3 3%
Hibernate
2 2%
LangChain
1 1%
LangGraph
1 1%
Selenium
1 1%
Show all (9)
What databases does SIX use?
MS SQL is named in 1% of job postings at SIX, followed by MySQL (1%), OpenSearch (1%), PostgreSQL (1%).
What cloud and platforms does SIX use?
Kubernetes is named in 21% of job postings at SIX, followed by Linux (16%), OpenShift (16%), Azure (16%).
Kubernetes
19 21%
OpenShift
15 16%
Azure
15 16%
GitLab
12 13%
Databricks
11 12%
Power BI
11 12%
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What developer tools does SIX use?
Ansible is named in 16% of job postings at SIX, followed by Rest API (11%), ArgoCD (10%), Prometheus (10%).
Ansible
15 16%
Rest API
10 11%
ArgoCD
9 10%
Prometheus
9 10%
Docker
8 9%
Terraform
7 8%
Helm
6 7%
Show all (28)
Which engineering practices does SIX ask for?
CI/CD is named in 42% of job postings at SIX, followed by AI Agents (12%), Platform Engineering (11%), Incident Management (5%).
CI/CD
39 42%
AI Agents
11 12%
Platform Engineering
10 11%
Incident Management
5 5%
GitOps
4 4%
Show all (28)
What does each SIX team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
18 postingsDevOps
13 postingsFinance
11 postingsData Science
10 postingsAnalytics
10 postingsAI/ML
6 postingsHow does your stack fit SIX?
How modern is the SIX stack?
SIX scores 71 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: 1; legacy ones: 0.
How common is the SIX stack in its industry?
Share of the 1,283 companies in the same industries, whose stack Alion knows, that use each technology.
What sets SIX apart
Companies with a stack like SIX
Worldpay
88 shared technologies
Sonata Software
87 shared technologies
Miratech
87 shared technologies
Hexaware Technologies
88 shared technologies
Depository Trust & Clearing Corporation
97 shared technologies
Unisys
98 shared technologies
Netcompany
88 shared technologies
NTT DATA Romania
88 shared technologies
Questions about the SIX tech stack
What programming languages does SIX use?
The languages named in SIX job postings are Python (41%), SQL (30%), Java (22%), JavaScript (12%), TypeScript (10%), as a share of the 92 postings of the last 12 months.
Does SIX use Spring Boot?
Yes. Spring Boot is named in 11 of 92 job postings (12%) and required in 11 of them.
What cloud and platforms does SIX use?
The cloud and platforms named in SIX job postings are Kubernetes (19), Linux (15), OpenShift (15) (postings in brackets).
What skills do you need for a Backend job at SIX?
Backend postings at SIX most often require Java (12), Spring Boot (8), GitLab (7), Rest API (7), out of 18 postings in the last 12 months.
Is the SIX tech stack changing?
No new technology has appeared in SIX job postings in the last six months.
How modern is the SIX tech stack?
SIX scores 71 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: 1; legacy ones: 0.
How does Alion know the SIX tech stack?
Alion reads every job posting SIX publishes and tags the technologies each one names. The figures on this page count the 92 postings of the last 12 months and were updated on Nov 11, 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, "SIX tech stack: 118 technologies from 92 job postings", as of Nov 11, 2026. https://alion.io/company/six/technologies