Replay tech stack
Replay builds mostly with Python, TypeScript, JavaScript, Node JS. Its stack also includes React.js, AWS, Amazon S3, DynamoDB. Python is named in 4 of the 11 job postings Replay published in the last 12 months (36%). Counted by Alion from the job postings of Replay, updated Oct 16, 2026.
What programming languages does Replay use?
Python is named in 36% of job postings at Replay, followed by TypeScript (27%), JavaScript (27%), Node JS (18%).
What frameworks and libraries does Replay use?
React.js is named in 27% of job postings at Replay, followed by LangChain (9%), LangGraph (9%), ONNX Runtime (9%).
What databases does Replay use?
DynamoDB is named in 9% of job postings at Replay, followed by PostgreSQL (9%).
DynamoDB
1 9%
PostgreSQL
1 9%
What cloud and platforms does Replay use?
AWS is named in 18% of job postings at Replay, followed by Amazon S3 (9%), Figma (9%).
What developer tools does Replay use?
Claude Code is named in 9% of job postings at Replay, followed by Cursor (9%), Storybook (9%), TensorRT (9%).
What AI and ML technologies does Replay use?
LLM is named in 36% of job postings at Replay.
LLM
4 36%
Which engineering practices does Replay ask for?
Synthetic Data is named in 73% of job postings at Replay, followed by AI Agents (27%), Machine Learning (27%), Multimodal AI (18%).
Synthetic Data
8 73%
AI Agents
3 27%
Multimodal AI
2 18%
NER
2 18%
CI/CD
1 9%
Data Augmentation
1 9%
Embeddings
1 9%
Show all (21)
What does each Replay team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
3 postingsHow does your stack fit Replay?
How modern is the Replay stack?
Replay scores 75 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.
Companies with a stack like Replay
Questions about the Replay tech stack
What programming languages does Replay use?
The languages named in Replay job postings are Python (36%), TypeScript (27%), JavaScript (27%), Node JS (18%), SQL (18%), as a share of the 11 postings of the last 12 months.
Does Replay use React.js?
Yes. React.js is named in 3 of 11 job postings (27%) and required in 3 of them.
What cloud and platforms does Replay use?
The cloud and platforms named in Replay job postings are AWS (2), Amazon S3 (1), Figma (1) (postings in brackets).
What skills do you need for a Backend job at Replay?
Backend postings at Replay most often require Node JS (2), Python (2), React.js (2), TypeScript (2), out of 3 postings in the last 12 months.
Is the Replay tech stack changing?
No new technology has appeared in Replay job postings in the last six months.
How modern is the Replay tech stack?
Replay scores 75 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 Replay tech stack?
Alion reads every job posting Replay publishes and tags the technologies each one names. The figures on this page count the 11 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, "Replay tech stack: 41 technologies from 11 job postings", as of Oct 16, 2026. https://alion.io/company/replay/technologies