Sedna
Marketplaces · Software
2 legal entities
11Open roles7 posted in 30 days+2 this week
38 daysTime to fillmedian of 10 closed rolesmarket: 38 days
Lately:+2 roles posted this weekFollow changes →
Facts
as of Nov 15, 2026The Intelligent Operating System for Shipping. Sedna connects communication, workflows, and operational data in one intelligent platform, giving maritime teams visibility and control to make faster, more confident and data-driven decisions.
It is hiring: 11 open roles, 7 of them posted in the last 30 days.
- Legal name
- John Street London WC1N 2EB. Sedna Communications Ltd
- Founded
- 2017
- Employees
- 201-500estimated range
- Legal entities
- 2 in 2 countries
- Open roles
- 11 in 5 citiesAlion job postings
- Register numbers
- CRN 13367033
- Official records
- Companies House 13367033
- Website
- sedna.com
As of Nov 15, 2026, Alion lists 11 open roles at Sedna. It was founded in 2017.
Sources: company registers, GLEIF, Wikidata, the company's site, Alion job postingsReport a mistake
What the registers and the postings say about this employer.
Legal entity active
John Street London WC1N 2EB. Sedna Communications Ltd
Not checked
Sanctions lists
OFAC SDN, EU consolidated
No match
Phishing reports
OpenPhish, Phishing.Database
None
Layoff notices
US WARN notices on file
None
Full employer checkScam signs in adverts, mail records, visa registers, domain history
Sources: company registers, the Alion truth index, OFAC and EU sanctions lists, US WARN notices
Hiring
All open roles →Hiring at full speed: most open roles are fresh.
Backend is the largest family, 24 of open roles.
7Posted in 30 days64% of open roles are fresh
73%Remote roles8 of 11
5Hiring offices
Can they hire you from United States?by your location
Closed for your country
Companies like this one (Software, 201-500, EEA) name United States in 2% of remote postings
No posting offers visa sponsorship. Remote roles: 8.
Time to fillmedian days to close a role
Alion signals0-100
Demand74
Pay35
Your chance65
How badly they need people, whether they pay, how realistic getting in is.
Open roles over time−100%
Sep 28This week
Open roles a week: 11 then, 0 now
Where the openings areshare of open roles · trend
Benefits named in postingsshare of open roles
Contract type
Full-Time 1
Visa sponsorship: none statedRelocation: none stated
Source: the company's careers site, read by Alion several times a day; market medians from all open roles of the same family
Footprint
Hiring in 5 cities in 5 countries.
5Cities
5Countries
LondonBusiest site
Loading the map
| Site | Type | Open roles | Hires most for | Engineering |
|---|---|---|---|---|
| London United Kingdom | Support & operations | 3 | Marketing, Customer Success, Industrial Engineering | 0% |
| Athens Greece | Support & operations | 3 | Backend, Customer Success, Industrial Engineering | 33% |
| Copenhagen Denmark | Support & operations | 2 | Backend, Customer Success | 50% |
| Cape Town South Africa | Engineering / R&D | 1 | Backend | 100% |
| Bergen Norway | Engineering / R&D | 1 | Backend | 100% |
| Singapore Singapore | Regional office | 0 | ||
| Middlesbrough United Kingdom | Regional office | 0 |
Source: office addresses in postings and company registers
Financials
Funding rounds, investors and revenue on record.
Venture - Series UnknownLatest round
7Rounds and grants
Money by yearUSD, rounds and grants
Sources: funding announcements, grant and company registers
Tech stack
Full chapter →Technologies named in job postings at Sedna over the last 12 months, by layer, with the share of postings for each.
18Technologies in use
14Postings analysed
81/100Stack modernity
Frameworks & librariesPlaywright 29%React.js 29%
Cloud & platformsAWS 29%GitLab CI 29%Postman 29%Microsoft Entra ID 14%
Sign in to see how your skills match this stackSign In
Full Sedna tech stack18 technologies · by team · pay by technology · changes · similar stacks
Source: the technologies named in the company's postings and on its site
Milestones
Each milestone is dated by its source: registers, filings, the press
Newsroom
Jul 14, 20252025
News · Nature
Trans-Neptunian objects (TNOs) with large perihelion distances (q 60 au) and semi-major axes (a 200 au) provide insights into the early evolution of the Solar System and the exis…
Jul 6, 20252025
News · Hackaday
caption id="attachment_790634" align="alignright" width="320" Image of Sedna, taken by the Hubble Space telescope in 2004. (Credit: NASA)/captionWhile for most people Pluto is th…
Jul 1, 20252025
News · arXiv.org
Abstract page for arXiv paper 2506.17732: Feasibility study of a mission to Sedna -- Nuclear propulsion and advanced solar sailing concepts
Jun 30, 20252025
Jun 27, 20252025
News · phys.org
Sources: the outlets named on each headline, each story once