{"company":{"id":1795053,"name":"Castelion","domain":"castelion.com","url":"https://alion.io/company/castelion"},"answer":"Castelion builds mostly with Python, C++, MATLAB, Rust. Its stack also includes Linux, Azure, PostgreSQL, Pytest. Python is named in 34 of the 116 job postings Castelion published in the last 12 months (29%). Counted by Alion from the job postings of Castelion, updated Oct 24, 2026.","window_days":365,"postings_analysed":116,"open_postings":115,"technologies_in_use":111,"modernity_score":70,"ai_adoption":true,"technologies":[{"name":"Python","layer":"languages","postings":34,"share":0.2931,"required":26,"open_postings":33,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"C++","layer":"languages","postings":25,"share":0.2155,"required":24,"open_postings":25,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"SolidWorks","layer":"tools","postings":17,"share":0.1466,"required":15,"open_postings":17,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"MATLAB","layer":"languages","postings":17,"share":0.1466,"required":14,"open_postings":17,"first_seen":"2026-09-07","last_seen":"2026-10-19","median_stated_pay_usd":null},{"name":"Linux","layer":"cloud","postings":16,"share":0.1379,"required":13,"open_postings":16,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"FMEA","layer":"practices","postings":15,"share":0.1293,"required":10,"open_postings":14,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"Rust","layer":"languages","postings":14,"share":0.1207,"required":14,"open_postings":14,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"AS9100","layer":"practices","postings":14,"share":0.1207,"required":10,"open_postings":14,"first_seen":"2026-09-07","last_seen":"2026-10-09","median_stated_pay_usd":null},{"name":"Statistical Process Control","layer":"practices","postings":12,"share":0.1034,"required":10,"open_postings":12,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"CI/CD","layer":"practices","postings":11,"share":0.0948,"required":10,"open_postings":11,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"SQL","layer":"languages","postings":10,"share":0.0862,"required":2,"open_postings":9,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"ANSYS","layer":"tools","postings":9,"share":0.0776,"required":9,"open_postings":9,"first_seen":"2026-09-07","last_seen":"2026-09-18","median_stated_pay_usd":null},{"name":"Microsoft Excel","layer":"tools","postings":9,"share":0.0776,"required":8,"open_postings":9,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"Human-in-the-Loop","layer":"practices","postings":6,"share":0.0517,"required":6,"open_postings":6,"first_seen":"2026-09-07","last_seen":"2026-09-21","median_stated_pay_usd":null},{"name":"Git","layer":"tools","postings":6,"share":0.0517,"required":4,"open_postings":6,"first_seen":"2026-09-07","last_seen":"2026-10-01","median_stated_pay_usd":null},{"name":"Simulink","layer":"tools","postings":5,"share":0.0431,"required":5,"open_postings":5,"first_seen":"2026-09-07","last_seen":"2026-10-19","median_stated_pay_usd":null},{"name":"Azure","layer":"cloud","postings":5,"share":0.0431,"required":3,"open_postings":5,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"Power BI","layer":"cloud","postings":5,"share":0.0431,"required":0,"open_postings":5,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"CMMC","layer":"practices","postings":4,"share":0.0345,"required":4,"open_postings":4,"first_seen":"2026-09-07","last_seen":"2026-10-19","median_stated_pay_usd":null},{"name":"Kubernetes","layer":"cloud","postings":4,"share":0.0345,"required":3,"open_postings":4,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"CAPA","layer":"practices","postings":3,"share":0.0259,"required":3,"open_postings":3,"first_seen":"2026-09-07","last_seen":"2026-09-15","median_stated_pay_usd":null},{"name":"Crowdstrike","layer":"cloud","postings":3,"share":0.0259,"required":3,"open_postings":3,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Foxglove Studio","layer":"tools","postings":3,"share":0.0259,"required":3,"open_postings":3,"first_seen":"2026-09-21","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"Nastran","layer":"tools","postings":3,"share":0.0259,"required":3,"open_postings":3,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"RTOS","layer":"cloud","postings":3,"share":0.0259,"required":3,"open_postings":3,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"SIEM","layer":"cloud","postings":3,"share":0.0259,"required":3,"open_postings":3,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Siemens NX","layer":"tools","postings":3,"share":0.0259,"required":3,"open_postings":3,"first_seen":"2026-09-07","last_seen":"2026-10-15","median_stated_pay_usd":null},{"name":"AWS","layer":"cloud","postings":3,"share":0.0259,"required":2,"open_postings":3,"first_seen":"2026-09-07","last_seen":"2026-09-14","median_stated_pay_usd":null},{"name":"GitHub","layer":"cloud","postings":3,"share":0.0259,"required":2,"open_postings":3,"first_seen":"2026-09-07","last_seen":"2026-09-22","median_stated_pay_usd":null},{"name":"MIL-STD-1553","layer":"tools","postings":3,"share":0.0259,"required":2,"open_postings":3,"first_seen":"2026-09-22","last_seen":"2026-10-01","median_stated_pay_usd":null},{"name":"VHDL","layer":"languages","postings":3,"share":0.0259,"required":2,"open_postings":3,"first_seen":"2026-09-07","last_seen":"2026-09-25","median_stated_pay_usd":null},{"name":"Verilog","layer":"languages","postings":3,"share":0.0259,"required":2,"open_postings":3,"first_seen":"2026-09-07","last_seen":"2026-09-25","median_stated_pay_usd":null},{"name":"Windows","layer":"cloud","postings":3,"share":0.0259,"required":2,"open_postings":3,"first_seen":"2026-09-07","last_seen":"2026-10-13","median_stated_pay_usd":null},{"name":"AutoCAD","layer":"tools","postings":3,"share":0.0259,"required":1,"open_postings":3,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"Bash","layer":"languages","postings":3,"share":0.0259,"required":1,"open_postings":3,"first_seen":"2026-09-07","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"Abaqus","layer":"tools","postings":2,"share":0.0172,"required":2,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Altium Designer","layer":"tools","postings":2,"share":0.0172,"required":2,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Carbon Black","layer":"cloud","postings":2,"share":0.0172,"required":2,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Digital Twin","layer":"practices","postings":2,"share":0.0172,"required":2,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-23","median_stated_pay_usd":null},{"name":"Julia","layer":"languages","postings":2,"share":0.0172,"required":2,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"PKI","layer":"practices","postings":2,"share":0.0172,"required":2,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"PostgreSQL","layer":"data","postings":2,"share":0.0172,"required":2,"open_postings":2,"first_seen":"2026-10-20","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"Splunk","layer":"cloud","postings":2,"share":0.0172,"required":2,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"TCP/IP","layer":"practices","postings":2,"share":0.0172,"required":2,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-10-19","median_stated_pay_usd":null},{"name":"VPN","layer":"practices","postings":2,"share":0.0172,"required":2,"open_postings":2,"first_seen":"2026-10-13","last_seen":"2026-10-19","median_stated_pay_usd":null},{"name":"CATIA","layer":"tools","postings":2,"share":0.0172,"required":1,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"GCP","layer":"cloud","postings":2,"share":0.0172,"required":1,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-14","median_stated_pay_usd":null},{"name":"Machine Learning","layer":"practices","postings":2,"share":0.0172,"required":1,"open_postings":2,"first_seen":"2026-10-20","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"PowerShell","layer":"languages","postings":2,"share":0.0172,"required":1,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-10-19","median_stated_pay_usd":null},{"name":"Pytest","layer":"frameworks","postings":2,"share":0.0172,"required":1,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-22","median_stated_pay_usd":null},{"name":"SystemVerilog","layer":"languages","postings":2,"share":0.0172,"required":1,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Time Series","layer":"practices","postings":2,"share":0.0172,"required":1,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-22","median_stated_pay_usd":null},{"name":"DO-254","layer":"practices","postings":2,"share":0.0172,"required":0,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Docker","layer":"tools","postings":2,"share":0.0172,"required":0,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-09-22","median_stated_pay_usd":null},{"name":"GD&T","layer":"practices","postings":2,"share":0.0172,"required":0,"open_postings":2,"first_seen":"2026-09-07","last_seen":"2026-10-15","median_stated_pay_usd":null},{"name":"Protobuf","layer":"tools","postings":2,"share":0.0172,"required":0,"open_postings":2,"first_seen":"2026-09-28","last_seen":"2026-10-01","median_stated_pay_usd":null},{"name":"AFSIM","layer":"tools","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"AI Agents","layer":"practices","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-14","last_seen":"2026-09-14","median_stated_pay_usd":null},{"name":"Asyncio","layer":"frameworks","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-10-20","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"BGP","layer":"practices","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-10-19","last_seen":"2026-10-19","median_stated_pay_usd":null},{"name":"C#","layer":"languages","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-14","last_seen":"2026-09-14","median_stated_pay_usd":null},{"name":"CUDA","layer":"frameworks","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-21","last_seen":"2026-09-21","median_stated_pay_usd":null},{"name":"CVD","layer":"practices","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-21","last_seen":"2026-09-21","median_stated_pay_usd":null},{"name":"DLP","layer":"cloud","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"DNS","layer":"practices","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-15","last_seen":"2026-09-15","median_stated_pay_usd":null},{"name":"FastAPI","layer":"frameworks","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-10-20","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"Femap","layer":"tools","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Fine-tuning","layer":"practices","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-14","last_seen":"2026-09-14","median_stated_pay_usd":null},{"name":"Grafana","layer":"cloud","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-21","last_seen":"2026-09-21","median_stated_pay_usd":null},{"name":"IBM QRadar","layer":"cloud","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Java","layer":"languages","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-14","last_seen":"2026-09-14","median_stated_pay_usd":null},{"name":"JavaScript","layer":"languages","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-10-20","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"LLM","layer":"ai","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-14","last_seen":"2026-09-14","median_stated_pay_usd":null},{"name":"MIL-STD-810","layer":"practices","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"MIL-STD-882","layer":"practices","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"MPLS","layer":"practices","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-10-19","last_seen":"2026-10-19","median_stated_pay_usd":null},{"name":"Minitab","layer":"tools","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Nessus","layer":"tools","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"OSPF","layer":"practices","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-10-19","last_seen":"2026-10-19","median_stated_pay_usd":null},{"name":"Prompt Engineering","layer":"practices","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-14","last_seen":"2026-09-14","median_stated_pay_usd":null},{"name":"RAG","layer":"practices","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-14","last_seen":"2026-09-14","median_stated_pay_usd":null},{"name":"Ray","layer":"frameworks","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-10-20","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"Robot Framework","layer":"frameworks","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"STAR-CCM+","layer":"tools","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-15","last_seen":"2026-09-15","median_stated_pay_usd":null},{"name":"STK","layer":"tools","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"SentinelOne","layer":"cloud","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Snort","layer":"tools","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"TypeScript","layer":"languages","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-10-20","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"Verification & Validation","layer":"practices","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Vitis","layer":"tools","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-25","last_seen":"2026-09-25","median_stated_pay_usd":null},{"name":"Vitis HLS","layer":"tools","postings":1,"share":0.0086,"required":1,"open_postings":1,"first_seen":"2026-09-25","last_seen":"2026-09-25","median_stated_pay_usd":null},{"name":"ARINC","layer":"tools","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-22","last_seen":"2026-09-22","median_stated_pay_usd":null},{"name":"Ansible","layer":"tools","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-10-19","last_seen":"2026-10-19","median_stated_pay_usd":null},{"name":"Ansys SIwave","layer":"tools","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Cadence Allegro","layer":"tools","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"DO-160","layer":"practices","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"EtherCAT","layer":"tools","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"FreeRTOS","layer":"cloud","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-21","last_seen":"2026-09-21","median_stated_pay_usd":null},{"name":"GitLab","layer":"cloud","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-22","last_seen":"2026-09-22","median_stated_pay_usd":null},{"name":"ISO 13485","layer":"practices","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Inertial Navigation","layer":"practices","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Jenkins","layer":"tools","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-22","last_seen":"2026-09-22","median_stated_pay_usd":null},{"name":"MIL-STD-461","layer":"practices","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Model Context Protocol","layer":"tools","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-14","last_seen":"2026-09-14","median_stated_pay_usd":null},{"name":"Plotly","layer":"frameworks","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-10-20","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"Puppet","layer":"tools","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-10-19","last_seen":"2026-10-19","median_stated_pay_usd":null},{"name":"PyTorch","layer":"frameworks","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-10-20","last_seen":"2026-10-20","median_stated_pay_usd":null},{"name":"Sensor Fusion","layer":"practices","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Terraform","layer":"tools","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-10-19","last_seen":"2026-10-19","median_stated_pay_usd":null},{"name":"Thermal Desktop","layer":"tools","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-07","last_seen":"2026-09-07","median_stated_pay_usd":null},{"name":"Xilinx Vivado","layer":"tools","postings":1,"share":0.0086,"required":0,"open_postings":1,"first_seen":"2026-09-25","last_seen":"2026-09-25","median_stated_pay_usd":null}],"own_products":[],"changes":{"first_appeared":[],"rising":[],"falling":[],"not_seen_180d":[]},"similar_stacks":[{"name":"Relativity Space","url":"https://alion.io/company/relativity-space/technologies","shared_technologies":76},{"name":"Vast Space","url":"https://alion.io/company/vastspace/technologies","shared_technologies":64},{"name":"Muon Space","url":"https://alion.io/company/muon-space/technologies","shared_technologies":66},{"name":"Elbit Systems","url":"https://alion.io/company/elbit-systems/technologies","shared_technologies":67},{"name":"Mach Industries","url":"https://alion.io/company/machindustries/technologies","shared_technologies":66},{"name":"K2 Space","url":"https://alion.io/company/k2-space/technologies","shared_technologies":65},{"name":"Joby Aviation","url":"https://alion.io/company/joby-aviation/technologies","shared_technologies":67},{"name":"CHAOS Industries","url":"https://alion.io/company/chaos-industries/technologies","shared_technologies":74}],"html_url":"https://alion.io/company/castelion/technologies","json_url":"https://alion.io/company/castelion/technologies.json","license":"CC BY-SA 4.0","meta":{"source":"Alion","built_at":"2026-10-24T10:06:31Z","generated_at":"2026-10-24T14:29:09Z"}}