Company lists · Data refreshed September 2026

Top 25 Structural design optimization companies based in South Africa

Name: Structural design optimization companies based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 104 companies tracked

RevenueBase identified 104 structural design optimization companies headquartered in South Africa as of September 2026 and tracks 699 professional contacts across them, including 267 with verified work emails. Johannesburg is the largest hub.

This list covers structural design optimization companies headquartered in South Africa, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

104Companies

699Contacts tracked

267Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest structural design optimization companies based in South Africa

Ranked by team size

Top 25 of 104 structural design optimization companies based in South Africa, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to structural design optimization companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Sutherland	Indirect evidence	Cape Town, South AfricaHQ checked Sep 22, 2026	51-200	102 contacts →
	Indirect evidence “Sutherland is a multi-disciplinary consulting engineering company with offices in Cape Town, Johannesburg, Durban, and Nairobi, Multidisciplinary sub-disciplines include…” Source: RevenueBase Database · checked Sep 22, 2026
2	Khonzi Engineering Services	Indirect evidence	Richards Bay, South AfricaHQ checked Sep 22, 2026	51-200	40 contacts →
	Indirect evidence “Established by Nokuthula Madondo in November and based in Richards Bay, South Africa with a branch in Durban Kwazulu-Natal.” Source: RevenueBase Database · checked Sep 22, 2026
3	Sotiralis Consulting Engineers	Indirect evidence	Faerie Glen, South AfricaHQ checked Sep 22, 2026	11-50	28 contacts →
	Indirect evidence “About us: Sotiralis Consulting Engineers (Pty) Ltd was established in 2007 and is the successor of Sotiralis Consulting (Pty) Ltd (trading as Sotiralis & Associates since 1985).” Source: RevenueBase Database · checked Sep 22, 2026
4	L&s Consulting PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 22, 2026	51-200	26 contacts →
	Partial evidence “L&S Consulting (Pty) Ltd is involved in Structural and Civil Consulting Engineering, mainly for the private sector for industrial, retail and office developments.” Source: RevenueBase Database · checked Sep 22, 2026
5	DG Consulting Engineers PTY LTD	Partial evidence	City Of Tshwane, South AfricaHQ checked Sep 22, 2026	11-50	24 contacts →
	Partial evidence “DG Consulting Engineers is a Civil and Structural consulting Engineering Company based in South Africa.” Source: RevenueBase Database · checked Sep 22, 2026
6	A19 Consulting Engineers	Indirect evidence	Cape Town, South AfricaHQ checked Sep 22, 2026	11-50	23 contacts →
	Indirect evidence “Over the past 20+ years we have successfully delivered services to clients in a wide variety of residential, commercial, and industrial projects with scopes ranging from small to…” Source: RevenueBase Database · checked Sep 22, 2026
7	Resultant Consulting Engineers	Strong evidence	Johannesburg, South AfricaHQ checked Sep 22, 2026	1-10	22 contacts →
	Strong evidence “Resultant Consulting Engineers is a dynamic engineering firm specialising in structural design in the mining and heavy industrial sectors.” Source: RevenueBase Database · checked Sep 22, 2026
8	DE Villiers Consult	Partial evidence	Stellenbosch, South AfricaHQ checked Sep 22, 2026	11-50	18 contacts →
	Partial evidence “Class-leading design and economic engineering solutions.” Source: RevenueBase Database · checked Sep 22, 2026
9	Et-Global	Indirect evidence	Cape Town, South AfricaHQ checked Sep 22, 2026	11-50	15 contacts →
	Indirect evidence “ET-Global is a specialised engineering technical services company servicing local and international mining and offshore industries.” Source: RevenueBase Database · checked Sep 22, 2026
10	Maranje Consulting	Strong evidence	Centurion, South AfricaHQ checked Sep 22, 2026	11-50	15 contacts →
	Strong evidence “Structural Engineering and Design.” Source: RevenueBase Database · checked Sep 22, 2026
11	GKB Design Associates PTY LTD	Strong evidence	Pretoria, South AfricaHQ checked Sep 22, 2026	1-10	13 contacts →
	Strong evidence “GKB Design Associates is a consulting engineering company, specialising in Civil, Structural, Mechanical, Transportation and Electrical Engineering.” Source: RevenueBase Database · checked Sep 22, 2026
12	Nine DOT Solutions PTY LTD	Strong evidence	City Of Tshwane, South AfricaHQ checked Sep 22, 2026	11-50	11 contacts →
	Strong evidence “Nine Dot Solutions (Pty) Ltd focuses on analysis and design solutions to the mechanical and structural engineering fields and has successful projects in South Africa, Africa…” Source: RevenueBase Database · checked Sep 22, 2026
13	Urbanstrut Consulting Engineers	Partial evidence	Sandton, South AfricaHQ checked Sep 22, 2026	1-10	10 contacts →
	Partial evidence “Urbanstrut Consulting Engineers is a South African civil and structural engineering consultancy providing practical, technically sound engineering solutions for the built…” Source: RevenueBase Database · checked Sep 22, 2026
14	WJK Consulting Engineers	Indirect evidence	Potchefstroom, South AfricaHQ checked Sep 22, 2026	1-10	9 contacts →
	Indirect evidence “Founder and CEO WJ Kotzé (Pr.” Source: RevenueBase Database · checked Sep 22, 2026
15	SMC Structural Engineers	Partial evidence	Cape Town, South AfricaHQ checked Sep 22, 2026	11-50	8 contacts →
	Partial evidence “Shelly Maritz Consulting (Pty) Ltd - Structural Consulting Engineers” Source: RevenueBase Database · checked Sep 22, 2026
16	Carlisle & Associates	Partial evidence	Johannesburg, South AfricaHQ checked Sep 22, 2026	1-10	8 contacts →
	Partial evidence “Carlisle & Associates is a civil and structural engineering consultancy based in Johannesburg, South Africa.” Source: RevenueBase Database · checked Sep 22, 2026
17	Watson Consulting Engineers PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 22, 2026	11-50	7 contacts →
	Indirect evidence “Engineering Excellence Our cutting-edge projects are carried out by a team of talented engineers who want to transform our communities.” Source: RevenueBase Database · checked Sep 22, 2026
18	MVW Consulting Engineers PTY LTD	Partial evidence	Bryanston, South AfricaHQ checked Sep 22, 2026	11-50	7 contacts →
	Partial evidence “MVW Consulting Engineers (Pty) Ltd is a progressive and specialist Consulting Engineering firm which offers services in the Structural and Civil Engineering.” Source: RevenueBase Database · checked Sep 22, 2026
19	Edifice Consulting Engineers	Partial evidence	Belville, South AfricaHQ checked Sep 22, 2026	11-50	6 contacts →
	Partial evidence “Edifice Consulting Engineers is a dynamic firm of engineering consultants offering consulting services in the structural and civil engineering disciplines.” Source: RevenueBase Database · checked Sep 22, 2026
20	Edge Engineering	Strong evidence	Boksburg, South AfricaHQ checked Sep 22, 2026	1-10	6 contacts →
	Strong evidence “Edge Engineering is committed to helping developers maximise their return on investments through high quality project specific civil and structural engineering designs in shorter…” Source: RevenueBase Database · checked Sep 22, 2026
21	FHI Consulting Engineers	Partial evidence	Cape Town, South AfricaHQ checked Sep 22, 2026	1-10	5 contacts →
	Partial evidence “FHI Consulting Engineers is a Cape Town based engineering firm specialising in structural engineering.” Source: RevenueBase Database · checked Sep 22, 2026
22	RJB Projects Consulting Civil Engineers	Partial evidence	Kloof, South AfricaHQ checked Sep 22, 2026	1-10	5 contacts →
	Partial evidence “RJB Projects caters to the civil and structural engineering needs of the public and private sectors of South Africa and abroad.” Source: RevenueBase Database · checked Sep 22, 2026
23	Delusch Consulting Engineers	Partial evidence	Johannesburg, South AfricaHQ checked Sep 22, 2026	1-10	5 contacts →
	Partial evidence “Formerly Barry Devenish & Associates established in 1991, we have over 80 years combined engineering and construction experience including specialised skills in structural steel…” Source: RevenueBase Database · checked Sep 22, 2026
24	ASD Engineering Consultants	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 22, 2026	11-50	4 contacts →
	Indirect evidence “ASD Consulting Engineers’ professionals are registered with the Engineering Council of South Africa, this ensures the firm’s quality services offered and that the firm is…” Source: RevenueBase Database · checked Sep 22, 2026
25	Prosento Structural Analytics	Strong evidence	Cape Town, South AfricaHQ checked Sep 22, 2026	1-10	4 contacts →
	Strong evidence “Efficient Civil/Structural Design” Source: RevenueBase Database · checked Sep 22, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: structural design optimization companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names structural design optimization companies.
Partial evidence: Its own public description names part of structural design optimization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name structural design optimization companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 104 structural design optimization companies based in South Africa

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 267 reachable decision-makers.

Free signup · no credit card

View the full list →

Structural design optimization companies based in South Africa at a glance

As of Sep 22, 2026

38.2%Verified-email coverage

6.7Average contacts per company

1-10Median size (employees)

17.3%Largest-city concentration · Johannesburg

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for South Africa, so it is reported there. Company counts and contact totals on this page are exact for South Africa, over 104 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among structural design optimization companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in South Africa whose own description of what they do matches “structural design optimization companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names structural design optimization companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among structural design optimization companies, and records with no verified work email. Companies headquartered outside South Africa are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 267 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names structural design optimization companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many structural design optimization companies are there based in South Africa?

RevenueBase identified 104 structural design optimization companies headquartered in South Africa as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Sutherland, headquartered in Cape Town, tops this list with the largest team on record.

Which city has the most structural design optimization companies?

Johannesburg leads with 18 headquartered companies, followed by Cape Town (14) and Pretoria (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 267 verified decision-maker contacts tracked across these 104 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 104 structural design optimization companies based in South Africa. Start with a free account, no credit card.

Download this list →

Related lists

Structural design optimization companies by geography

Browse the directory

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.