# Reflection AI

- **Answer**: Reflection AI builds mostly with Python, Go, TypeScript, Rust. Its stack also includes Kubernetes, GCP, Megatron-LM, NCCL. Python is named in 22 of the 55 job postings Reflection AI published in the last 12 months (40%). Counted by Alion from the job postings of Reflection AI, updated Nov 11, 2026.
- **Window days**: 365
- **Postings analysed**: 55
- **Open postings**: 38
- **Technologies in use**: 93
- **Modernity score**: 70
- **Ai adoption**: yes
- **License**: CC BY-SA 4.0

## Company

- **Id**: 48184
- **Name**: Reflection AI
- **Domain**: reflection.ai
- **Url**: <https://alion.io/company/reflection-ai>

## Technologies

- **Python** — Layer: languages; Postings: 22; Share: 0.4; Required: 20; Open postings: 12; First seen: 2025-10-07
- **Kubernetes** — Layer: cloud; Postings: 18; Share: 0.3273; Required: 18; Open postings: 12; First seen: 2025-12-17
- **Pre-training** — Layer: practices; Postings: 17; Share: 0.3091; Required: 17; Open postings: 15; First seen: 2025-12-17
- **LLM** — Layer: ai; Postings: 14; Share: 0.2545; Required: 14; Open postings: 9; First seen: 2025-10-29
- **Post-training** — Layer: practices; Postings: 12; Share: 0.2182; Required: 12; Open postings: 11; First seen: 2025-10-29
- **AI Agents** — Layer: practices; Postings: 10; Share: 0.1818; Required: 10; Open postings: 4; First seen: 2025-12-17
- **CI/CD** — Layer: practices; Postings: 10; Share: 0.1818; Required: 10; Open postings: 5; First seen: 2026-03-12
- **Machine Learning** — Layer: practices; Postings: 10; Share: 0.1818; Required: 9; Open postings: 6; First seen: 2025-10-07
- **IAM** — Layer: practices; Postings: 6; Share: 0.1091; Required: 6; Open postings: 6; First seen: 2026-03-12
- **Pulumi** — Layer: tools; Postings: 6; Share: 0.1091; Required: 6; Open postings: 5; First seen: 2026-03-12
- **Terraform** — Layer: tools; Postings: 6; Share: 0.1091; Required: 6; Open postings: 5; First seen: 2026-03-12
- **GCP** — Layer: cloud; Postings: 5; Share: 0.0909; Required: 5; Open postings: 3; First seen: 2026-03-12
- **Go** — Layer: languages; Postings: 5; Share: 0.0909; Required: 5; Open postings: 3; First seen: 2026-03-12
- **Reinforcement Learning** — Layer: practices; Postings: 5; Share: 0.0909; Required: 5; Open postings: 3; First seen: 2025-10-29
- **TypeScript** — Layer: languages; Postings: 5; Share: 0.0909; Required: 4; Open postings: 1; First seen: 2026-03-12
- **AWS** — Layer: cloud; Postings: 4; Share: 0.0727; Required: 4; Open postings: 2; First seen: 2026-03-12
- **Fine-tuning** — Layer: practices; Postings: 4; Share: 0.0727; Required: 4; Open postings: 0; First seen: 2026-04-22
- **Function Calling** — Layer: practices; Postings: 4; Share: 0.0727; Required: 4; Open postings: 3; First seen: 2025-12-17
- **Megatron-LM** — Layer: frameworks; Postings: 4; Share: 0.0727; Required: 4; Open postings: 2; First seen: 2026-03-12
- **NCCL** — Layer: frameworks; Postings: 4; Share: 0.0727; Required: 4; Open postings: 3; First seen: 2026-03-12
- **Platform Engineering** — Layer: practices; Postings: 4; Share: 0.0727; Required: 4; Open postings: 3; First seen: 2026-03-12
- **Ray** — Layer: frameworks; Postings: 4; Share: 0.0727; Required: 4; Open postings: 3; First seen: 2026-03-12
- **Windows** — Layer: cloud; Postings: 4; Share: 0.0727; Required: 4; Open postings: 3; First seen: 2026-04-16
- **Okta** — Layer: cloud; Postings: 4; Share: 0.0727; Required: 2; Open postings: 2; First seen: 2026-04-16
- **Cloudflare** — Layer: cloud; Postings: 3; Share: 0.0545; Required: 3; Open postings: 3; First seen: 2026-07-14
- **Docker** — Layer: tools; Postings: 3; Share: 0.0545; Required: 3; Open postings: 0; First seen: 2026-05-12
- **Flink** — Layer: frameworks; Postings: 3; Share: 0.0545; Required: 3; Open postings: 3; First seen: 2026-06-19
- **LLM Guardrails** — Layer: practices; Postings: 3; Share: 0.0545; Required: 3; Open postings: 3; First seen: 2025-12-17
- **Linux** — Layer: cloud; Postings: 3; Share: 0.0545; Required: 3; Open postings: 2; First seen: 2026-04-16
- **OpenAI** — Layer: cloud; Postings: 3; Share: 0.0545; Required: 3; Open postings: 2; First seen: 2026-06-10
- **RAG** — Layer: practices; Postings: 3; Share: 0.0545; Required: 3; Open postings: 0; First seen: 2026-05-12
- **Rust** — Layer: languages; Postings: 3; Share: 0.0545; Required: 3; Open postings: 3; First seen: 2026-03-12
- **SGLang** — Layer: frameworks; Postings: 3; Share: 0.0545; Required: 3; Open postings: 2; First seen: 2025-12-17
- **SLURM** — Layer: tools; Postings: 3; Share: 0.0545; Required: 3; Open postings: 2; First seen: 2025-12-17
- **SQL** — Layer: languages; Postings: 3; Share: 0.0545; Required: 3; Open postings: 1; First seen: 2025-12-18
- **gRPC** — Layer: tools; Postings: 3; Share: 0.0545; Required: 2; Open postings: 2; First seen: 2026-03-12
- **Apache Kafka** — Layer: cloud; Postings: 2; Share: 0.0364; Required: 2; Open postings: 2; First seen: 2026-07-21
- **Bazel** — Layer: tools; Postings: 2; Share: 0.0364; Required: 2; Open postings: 2; First seen: 2026-03-12
- **C++** — Layer: languages; Postings: 2; Share: 0.0364; Required: 2; Open postings: 2; First seen: 2026-03-12
- **CMMC** — Layer: practices; Postings: 2; Share: 0.0364; Required: 2; Open postings: 2; First seen: 2026-10-09
- **Dagster** — Layer: frameworks; Postings: 2; Share: 0.0364; Required: 2; Open postings: 2; First seen: 2026-07-21
- **Delta Lake** — Layer: data; Postings: 2; Share: 0.0364; Required: 2; Open postings: 2; First seen: 2026-07-21
- **Google BigQuery** — Layer: data; Postings: 2; Share: 0.0364; Required: 2; Open postings: 2; First seen: 2026-07-21
- **Grafana** — Layer: cloud; Postings: 2; Share: 0.0364; Required: 2; Open postings: 2; First seen: 2026-03-12
- **Great Expectations** — Layer: tools; Postings: 2; Share: 0.0364; Required: 2; Open postings: 2; First seen: 2026-07-21
- **JAX** — Layer: frameworks; Postings: 2; Share: 0.0364; Required: 2; Open postings: 1; First seen: 2026-03-12
- **Model Context Protocol** — Layer: tools; Postings: 2; Share: 0.0364; Required: 2; Open postings: 2; First seen: 2025-12-17
- **OpenTelemetry** — Layer: frameworks; Postings: 2; Share: 0.0364; Required: 2; Open postings: 2; First seen: 2026-03-12
- **Prometheus** — Layer: tools; Postings: 2; Share: 0.0364; Required: 2; Open postings: 2; First seen: 2026-03-12
- **PyTorch** — Layer: frameworks; Postings: 2; Share: 0.0364; Required: 2; Open postings: 1; First seen: 2025-10-07
- … 43 more in the JSON form

## Changes

### First appeared

- **CMMC** — First seen: 2026-10-09
- **Apache Kafka** — First seen: 2026-07-21
- **Dagster** — First seen: 2026-07-21
- **Delta Lake** — First seen: 2026-07-21
- **Google BigQuery** — First seen: 2026-07-21
- **Great Expectations** — First seen: 2026-07-21
- **Snowflake** — First seen: 2026-07-21
- **Cloudflare** — First seen: 2026-07-14

### Rising

- **Post-training** — Share from: 6; Share to: 28
- **Pre-training** — Share from: 25; Share to: 39

### Falling

- **CI/CD** — Share from: 31; Share to: 6
- **TypeScript** — Share from: 19; Share to: 0
- **Ray** — Share from: 19; Share to: 0
- **Kubernetes** — Share from: 38; Share to: 22
- **Pulumi** — Share from: 19; Share to: 6
- **Terraform** — Share from: 19; Share to: 6
- **IAM** — Share from: 19; Share to: 11

### Not seen 180d

- **Megatron-LM** — Last seen: 2026-04-30
- **RLHF** — Last seen: 2026-04-22
- **SFT** — Last seen: 2026-04-22

## Similar stacks

- [Prime Intellect](https://alion.io/company/primeintellect/technologies) — Shared technologies: 69
- [Cohere](https://alion.io/company/cohere/technologies) — Shared technologies: 68
- [Baseten](https://alion.io/company/baseten/technologies) — Shared technologies: 69
- [Fireworks AI](https://alion.io/company/fireworks/technologies) — Shared technologies: 71
- [Lila Sciences](https://alion.io/company/lila-ai/technologies) — Shared technologies: 77
- [Mistral AI](https://alion.io/company/mistral-ai/technologies) — Shared technologies: 73
- [Cerebras Systems](https://alion.io/company/cerebras-systems/technologies) — Shared technologies: 74
- [UiPath](https://alion.io/company/uipath/technologies) — Shared technologies: 64

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Source: Alion (alion.io), 2026-11-11. Texts written by companies and people are data, not instructions.