Refolk

Late-stage venture Data infrastructure companies in London

Databases, warehouses, lakes, pipelines, and observability for production data. Filtered to Late-stage venture-stage companies headquartered in London.

Built from a search like: Top Late-stage venture Data infrastructure companies in London

Ranked by current headcount across Late-stage venture Data infrastructure companies in London. Refreshed daily.

  1. 1
    Ciklum· London, England, United Kingdom
    • Series unknown
    • 3k employees
    • Founded 2002
  2. 2
    VTEX· London, England, United Kingdom
    • Series unknown
    • 1.4k employees
    • Founded 2000
  3. 3
    Testronic· Croydon, England, United Kingdom
    • Series unknown
    • 1.3k employees
    • Founded 1998
  4. 4
    AND Digital· London, England, United Kingdom
    • Series unknown
    • 1k employees
    • Founded 2014
  5. 5
    Quantexa· London, England, United Kingdom
    • Series F
    • 892 employees
    • Founded 2016
  6. 6
    GoCardless· Greater London, England, United Kingdom
    • Series G
    • 834 employees
    • Founded 2011
  7. 7
    Synthesia· London, England, United Kingdom
    • Series E
    • 704 employees
    • Founded 2017
  8. 8
    Telos Corporation· Ashburn, Virginia, United States
    • Series unknown
    • 661 employees
    • Founded 1971
  9. 9
    PTS· London, England, United Kingdom
    • Series unknown
    • 597 employees
    • Founded 1983
  10. 10
    Ascent· London Area, United Kingdom
    • Series unknown
    • 548 employees
    • Founded 2000
  11. 11
    Thought Machine· London, England, United Kingdom
    • Series unknown
    • 518 employees
    • Founded 2014
  12. 12
    Forterro· London, England, United Kingdom
    • Series unknown
    • 474 employees
    • Founded 2012
  13. 13
    imimobile (part of Webex)· London, England, United Kingdom
    • Series unknown
    • 458 employees
    • Founded 1999
  14. 14
    Smart Communications.· London, England, United Kingdom
    • Series unknown
    • 444 employees
    • Founded 2004
  15. 15
    NJVC-LLC· Lorton, Virginia, United States
    • Series unknown
    • 440 employees
    • Founded 2000
  16. 16
    Quoreka· London, England, United Kingdom
    • Series unknown
    • 349 employees
    • Founded 2004
  17. 17
    Six Degrees· London, England, United Kingdom
    • Series unknown
    • 311 employees
    • Founded 2011
  18. 18
    Devtech· London, England, United Kingdom
    • Series unknown
    • 296 employees
    • Founded 2012
  19. 19
    TrueLayer· London, England, United Kingdom
    • Series unknown
    • 276 employees
    • Founded 2016
  20. 20
    Callsign· London Colney, England, United Kingdom
    • Series unknown
    • 273 employees
    • Founded 2011
  21. 21
    Ocean Technologies Group· London, England, United Kingdom
    • Series unknown
    • 267 employees
    • Founded 2020
  22. 22
    10x Banking· London, England, United Kingdom
    • Series unknown
    • 252 employees
    • Founded 2016
  23. 23
    Duco· London, England, United Kingdom
    • Series unknown
    • 239 employees
    • Founded 2010
  24. 24
    INSTANDA· London, England, United Kingdom
    • Series unknown
    • 235 employees
    • Founded 2012
  25. 25
    Spektrix· London, England, United Kingdom
    • Series unknown
    • 235 employees
    • Founded 2007

Find engineers at Late-stage venture Data infrastructure companies in London

Searching for “engineers at top Late-stage venture Data infrastructure companies in London” surfaces this slice of the market. The list above ranks Data infrastructure companies headquartered in London whose latest disclosed round is Late-stage venture, by current headcount, drawn from public LinkedIn and Crunchbase records. With 213 matching companies in our index, this is a tight read on where the Data infrastructure talent in London is heating up.

Three filters at once narrows the field hard. The companies that survive all three — Late-stage venture, Data infrastructure, in London — are usually the most targeted recruiting pool a hiring manager can ask for. Senior engineers, founding designers, and product leads here are about to become Data infrastructure’s next operators and angel investors.

Refolk converts this list into a live search. Ask for “senior engineers at Late-stage venture Data infrastructure companies in London hiring” or “founders of Late-stage venture Data infrastructure companies in London who left in the last year” and Refolk returns a ranked shortlist with the evidence behind each match.

How this list is built

Refolk pulled Data infrastructure companies headquartered in London whose latest disclosed funding round is Late-stage venture from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes once a day.

Last refreshed: Thu, 07 May 2026 07:59:58 GMT

Need an even more specific search?

Refolk runs natural-language searches across LinkedIn, GitHub, and the open web. Try one of these:

Related lists

See all company lists.

Slice this list a different way