Upstart tech stack
Upstart builds mostly with Python, SQL, Kotlin, Java. Its stack also includes AWS, Kubernetes, React.js, Ruby on Rails. Python is named in 46 of the 102 job postings Upstart published in the last 12 months (45%). Counted by Alion from the job postings of Upstart, updated Nov 11, 2026.
What programming languages does Upstart use?
Python is named in 45% of job postings at Upstart, followed by SQL (25%), Kotlin (23%), Java (22%).
Python
46 45%
SQL
25 25%
Kotlin
23 23%
Java
22 22%
JavaScript
16 16%
Ruby
15 15%
TypeScript
11 11%
Go
10 10%
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What frameworks and libraries does Upstart use?
React.js is named in 12% of job postings at Upstart, followed by Ruby on Rails (6%), React Native (4%), Next.js (4%).
React.js
12 12%
Ruby on Rails
6 6%
React Native
4 4%
Next.js
4 4%
FastAPI
2 2%
Jest
2 2%
Flask
1 1%
PyTorch
1 1%
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What databases does Upstart use?
Amazon Redshift is named in 3% of job postings at Upstart, followed by Snowflake (3%), PostgreSQL (3%), Apache Iceberg (1%).
Amazon Redshift
3 3%
Snowflake
3 3%
PostgreSQL
3 3%
Apache Iceberg
1 1%
ClickHouse
1 1%
Delta Lake
1 1%
Google BigQuery
1 1%
Pinecone
1 1%
What cloud and platforms does Upstart use?
AWS is named in 25% of job postings at Upstart, followed by Kubernetes (18%), Databricks (9%), Looker (9%).
AWS
25 25%
Kubernetes
18 18%
Databricks
9 9%
Apache Kafka
8 8%
Spark
5 5%
GCP
5 5%
Tableau
5 5%
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What developer tools does Upstart use?
gRPC is named in 8% of job postings at Upstart, followed by Rest API (6%), Terraform (6%), Claude Code (4%).
gRPC
8 8%
Rest API
6 6%
Terraform
6 6%
Claude Code
4 4%
GraphQL
4 4%
ArgoCD
4 4%
Docker
3 3%
AWS CDK
2 2%
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What AI and ML technologies does Upstart use?
LLM is named in 2% of job postings at Upstart.
LLM
2 2%
Which engineering practices does Upstart ask for?
Machine Learning is named in 43% of job postings at Upstart, followed by CI/CD (17%), A/B Testing (15%), Platform Engineering (9%).
CI/CD
17 17%
Platform Engineering
9 9%
AI Agents
7 7%
Incident Management
4 4%
Service Mesh
4 4%
Show all (22)
What does each Upstart team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
32 postingsAI/ML
12 postingsAnalytics
7 postingsHow does your stack fit Upstart?
How much does Upstart pay by technology?
Median stated pay of the postings that name each technology, against the median of all Upstart postings with stated pay: $231k across 79 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Python | 36 | $231k | 0% |
| SQL | 21 | $218k | −6% |
| AWS | 20 | $231k | 0% |
| Kotlin | 18 | $231k | 0% |
| Java | 18 | $231k | 0% |
| Kubernetes | 13 | $264k | +14% |
| Ruby | 12 | $231k | 0% |
| Databricks | 9 | $231k | 0% |
| Looker | 9 | $218k | −6% |
| JavaScript | 8 | $231k | 0% |
How is the Upstart 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 Upstart stack?
Upstart scores 76 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: 1; legacy ones: 0.
How common is the Upstart stack in its industry?
Share of the 1,986 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Upstart apart
Companies with a stack like Upstart
Questions about the Upstart tech stack
What programming languages does Upstart use?
The languages named in Upstart job postings are Python (45%), SQL (25%), Kotlin (23%), Java (22%), JavaScript (16%), as a share of the 102 postings of the last 12 months.
Does Upstart use React.js?
Yes. React.js is named in 12 of 102 job postings (12%) and required in 7 of them.
What cloud and platforms does Upstart use?
The cloud and platforms named in Upstart job postings are AWS (25), Kubernetes (18), Databricks (9) (postings in brackets).
What skills do you need for a Backend job at Upstart?
Backend postings at Upstart most often require Kotlin (19), Java (18), Python (18), Ruby (10), out of 32 postings in the last 12 months.
Is the Upstart tech stack changing?
Yes. OpenAI Codex, Amazon S3, Helm, Amazon CloudWatch first appeared in Upstart job postings in the last six months.
How modern is the Upstart tech stack?
Upstart scores 76 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: 1; legacy ones: 0.
How does Alion know the Upstart tech stack?
Alion reads every job posting Upstart publishes and tags the technologies each one names. The figures on this page count the 102 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, "Upstart tech stack: 123 technologies from 102 job postings", as of Nov 11, 2026. https://alion.io/company/upstart/technologies