Start with the five-company bench contrast before outreach
Elastic 56, MongoDB 43, HashiCorp 36, Fastly 20, Datadog 18: five records add to 173. Platform engineering, DevOps, and support titles stay outside this page's scope.
How the SRE seat is cut: spelled-out Site Reliability Engineer only
The seat is spelled-out Site Reliability Engineer only; Senior joins the same family. Five exclusive homepage records total 173 as of 2026-09-17 PT (9/17).
Denominator: sum of current Site Reliability Engineer profiles across Elastic, MongoDB, HashiCorp, Fastly, and Datadog exclusive company homepage records, as of 2026-09-17 PT (9/17).
Elastic 56 on its exclusive company record anchors the pack
Elastic sets the top of the range. Its own exclusive company homepage record, www.elastic.co, carries 56 current Site Reliability Engineer profiles as of 2026-09-17 PT (9/17). Nobody else in the pack comes close, and because the record is exclusive to Elastic, that 56 is not inflated by acquired or parent brands; it reads the bench depth on Elastic's own homepage record.
Denominator: current profiles on the Elastic exclusive company homepage record (www.elastic.co) matching Site Reliability Engineer / Senior Site Reliability Engineer title phrases, as of 2026-09-17 PT (9/17).
MongoDB 43 follows on its own exclusive company record
MongoDB follows on its own exclusive company homepage record, www.mongodb.com, with 43 current Site Reliability Engineer profiles as of 2026-09-17 PT (9/17). Against Elastic, this rung is narrower under the same seat definition; the difference is bench depth rather than a different scope. For a database infrastructure name, that gives a comparable cross-read on the SRE seat.
Denominator: current profiles on the MongoDB exclusive company homepage record (www.mongodb.com) matching Site Reliability Engineer / Senior Site Reliability Engineer title phrases, as of 2026-09-17 PT (9/17).
HashiCorp 36 holds the middle rung
HashiCorp holds the middle rung with 36 current Site Reliability Engineer profiles on its own exclusive company homepage record, www.hashicorp.com, as of 2026-09-17 PT (9/17). At 36, it sits below Elastic and MongoDB and above Fastly and Datadog, which makes it the hinge of the gradient. For TA teams, the middle rung is often the most under-read band: it lacks the head-brand default attention without being a thin tail bench.
Denominator: current profiles on the HashiCorp exclusive company homepage record (www.hashicorp.com) matching Site Reliability Engineer / Senior Site Reliability Engineer title phrases, as of 2026-09-17 PT (9/17).
Fastly 20 and Datadog 18 close the tail on their own records
Fastly opens the tail with 20 current Site Reliability Engineer profiles on its own exclusive company homepage record, www.fastly.com, and Datadog closes it with 18 on www.datadoghq.com, both as of 2026-09-17 PT (9/17). The two tail benches are close to each other, yet each is counted only on its own record, so neither absorbs the other. A tail bench is not a dismissal: for hiring moves that need a precise seat picture, 20 and 18 are still reachable, comparable pools.
Denominator: Fastly maps 20 current Site Reliability Engineer profiles on www.fastly.com and Datadog maps 18 on www.datadoghq.com, matching Site Reliability Engineer / Senior Site Reliability Engineer title phrases; both as of 2026-09-17 PT (9/17).
The pack total of 173 comes from five exclusive company records
The pack total is 173 current Site Reliability Engineer profiles, the sum of the five exclusive company homepage records: 56 + 43 + 36 + 20 + 18 = 173, as of 2026-09-17 PT (9/17). Because the five records do not overlap on the seat being counted, the total is a clean addition rather than a deduplicated estimate. For TA teams, 173 is the pack size that can be cited directly, while 56 and 43 are the two head readings that can stand on their own.
Denominator: sum of current Site Reliability Engineer profiles across Elastic, MongoDB, HashiCorp, Fastly, and Datadog exclusive company homepage records, as of 2026-09-17 PT (9/17).
Platform, DevOps, and support titles stay outside the 173
Platform engineering, DevOps, and support titles remain outside the 173. They may sit beside Site Reliability Engineer on the same org chart, and their work may touch reliability, but the pack counts only the one spelled-out seat, so the total stays traceable to five exclusive company homepage records as of 2026-09-17 PT (9/17). Naming the boundary lets a reader judge what each of 56, 43, 36, 20, and 18 can support in a hiring decision instead of mistaking them for the whole infrastructure function.
Denominator: sum of current Site Reliability Engineer profiles across Elastic, MongoDB, HashiCorp, Fastly, and Datadog exclusive company homepage records; platform engineering, DevOps, and support titles sit outside this denominator, as of 2026-09-17 PT (9/17).
Methodology
Counting rule for this chapter. Every figure is a count of current profiles on one named company's own exclusive homepage record — Elastic, MongoDB, HashiCorp, Fastly, or Datadog — never a rolled-up parent entity. The seat is kept deliberately narrow: one spelled-out role, Site Reliability Engineer, with Senior Site Reliability Engineer counted in the same family. All six numbers in this chapter share a single as-of date, 2026-09-17 PT, so the comparison stays date-consistent. The five company benches are shown side by side in the bench comparison (fig-infra-sre-bench-56-43-36-20-18); the five exclusive records that form the boundary of the pack are laid out in the record-boundary view (fig-infra-sre-record-boundary); the in-or-out decision for platform, DevOps, and support titles is set out in the seat classification (fig-infra-sre-seat-in-out); and the pack total is decomposed in the composition view (fig-infra-sre-pack-173-composition) as 56 + 43 + 36 + 20 + 18 = 173. Source: Metix AI.
| Metric | Value | Denominator |
|---|---|---|
| Elastic | 56 | current profiles on the Elastic exclusive homepage record (www.elastic.co) matching Site Reliability Engineer / Senior Site Reliability Engineer |
| MongoDB | 43 | current profiles on the MongoDB exclusive homepage record (www.mongodb.com) matching Site Reliability Engineer / Senior Site Reliability Engineer |
| HashiCorp | 36 | current profiles on the HashiCorp exclusive homepage record (www.hashicorp.com) matching Site Reliability Engineer / Senior Site Reliability Engineer |
| Fastly | 20 | current profiles on the Fastly exclusive homepage record (www.fastly.com) matching Site Reliability Engineer / Senior Site Reliability Engineer |
| Datadog | 18 | current profiles on the Datadog exclusive homepage record (www.datadoghq.com) matching Site Reliability Engineer / Senior Site Reliability Engineer |
Ask Metix to run the same map on your names
The published pack is fixed at 173 across the five exclusive company homepage records; the same single-seat scope can be applied to a different company record for your next hiring decision.
FAQ
- Why these five companies and not other infrastructure names?
- Because each of the five — Elastic, MongoDB, HashiCorp, Fastly, and Datadog — has its own exclusive company homepage record, so its bench can be counted directly. Together they hold 173 current Site Reliability Engineer profiles across the five exclusive company homepage records as of 2026-09-17 PT.
- Does the total of 173 include platform, DevOps, or support titles?
- No. The 173 is the sum of current Site Reliability Engineer profiles on the five exclusive company homepage records (56 + 43 + 36 + 20 + 18) as of 2026-09-17 PT; platform engineering, DevOps, and support titles are counted outside this seat.
- Why does Elastic sit at 56 while Datadog sits at 18?
- The counting rule is identical for both: current Site Reliability Engineer profiles on each company's own exclusive homepage record as of 2026-09-17 PT. Elastic's record holds 56 and Datadog's holds 18, so the gap reflects bench depth rather than a different scope.
- Can the same single-seat cut be produced for another company?
- Yes. The published pack is fixed at 173 across the five exclusive company homepage records as of 2026-09-17 PT, and the same single-seat scope can be applied to a different company record on request.
Request the infra SRE peer pack (five names · 173 current people)
The same methodology can export mapped current Site Reliability Engineer profiles at Elastic, MongoDB, HashiCorp, Fastly, and Datadog, or rerun a custom peer pack on your target companies.
Start a Mira trial