Company lists · Data refreshed September 2026

Top 25 Refinery engineering firms based in Curitiba, Brazil

Name: Refinery engineering firms based in Curitiba, Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 97 companies tracked

RevenueBase identified 97 refinery engineering firms headquartered in Curitiba, Brazil as of September 2026 and tracks 1,447 professional contacts across them, including 146 with verified work emails. Sao Paulo is the largest hub.

This list covers refinery engineering firms headquartered in Curitiba, Brazil, 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 17, 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 17, 2026 86% judged on-target in blind review

97Companies

1,447Contacts tracked

146Verified emails

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The 25 largest refinery engineering firms based in Curitiba, Brazil

Ranked by team size

Top 25 of 97 refinery engineering firms based in Curitiba, Brazil, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to refinery engineering firms: 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	ACV Tecline Engenharia Ltda	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	501-1,000	557 contacts →
	Indirect evidence “A ACV Tecline é uma empresa especializada na prestação de serviços voltados, principalmente, para empresas do setor de energia, com destaque para as áreas de petróleo e gás.” Source: RevenueBase Database · checked Sep 17, 2026
2	G5 Engenharia	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	51-200	135 contacts →
	Indirect evidence “A G5 Engenharia é uma empresa de consultoria, projeto e de gerenciamento de implantação de obras de infra-estrutura, atuando principalmente no ramo de energia, mineração…” Source: RevenueBase Database · checked Sep 17, 2026
3	Possebon Engenharia E Serviços	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	51-200	98 contacts →
	Indirect evidence “Com sede em Curitiba (PR), a POSSEBON iniciou suas atividades em 31 de julho de 1981, na área de engenharia civil.” Source: RevenueBase Database · checked Sep 17, 2026
4	NJB	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	51-200	92 contacts →
	Indirect evidence “A empresa NJB - Engenharia e Gerenciamento, nasceu no ano de 1990, com foco principal no desenvolvimento e gerenciamento de projetos de Geração e Cogeração de Energia…” Source: RevenueBase Database · checked Sep 17, 2026
5	OMS Engenharia Ltda	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	51-200	65 contacts →
	Indirect evidence “A OMS Engenharia é uma empresa especializada em engenharia one-stop-shop.” Source: RevenueBase Database · checked Sep 17, 2026
6	Protium Dynamics	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	11-50	22 contacts →
	Indirect evidence “Somos uma empresa de engenharia especializada em soluções completas de hidrogênio para os setores de petróleo, gás, mineração e energia.” Source: RevenueBase Database · checked Sep 17, 2026
7	DEX Engenharia E Consultoria	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	11-50	17 contacts →
	Indirect evidence “A DEX Engenharia e Consultoria conta com uma equipe multidisciplinar, composta de engenheiros, consultores, técnicos, projetistas e desenhistas trabalhando de maneira integrada.” Source: RevenueBase Database · checked Sep 17, 2026
8	Michelena Climatização	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence “A MICHELENA CLIMATIZAÇÃO foi criada em 1980 para atuar em projetos, instalações e manutenções de sistemas de ar condicionado.” Source: RevenueBase Database · checked Sep 17, 2026
9	Crossfire Engenharia	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “A CROSSFIRE lhe abre as portas da proteção e prevenção contra incêndios, desenvolvendo alta tecnologia em todo seguimento da engenharia, realizando de forma completa todo…” Source: RevenueBase Database · checked Sep 17, 2026
10	Omatic Engenharia	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	1-10	14 contacts →
	Indirect evidence “Omatic is an inovative and high performance company.” Source: RevenueBase Database · checked Sep 17, 2026
11	Roka Engenharia	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “A ROKA Engenharia foi fundada em 1992, com prestação de serviços em Engenharia Elétrica e Mecânica.” Source: RevenueBase Database · checked Sep 17, 2026
12	Projecalc Engenharia	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “A Projecalc Engenharia foi estabelecida em junho de 2017 como uma empresa especializada em engenharia de estruturas.” Source: RevenueBase Database · checked Sep 17, 2026
13	Engecell	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “A Engecell ajuda os setores de celulose, farmacêutica, química e alimentícia a tornar seus projetos multidisciplinares em realidades sustentáveis.” Source: RevenueBase Database · checked Sep 17, 2026
14	Mgcalc Engenharia E Consultoria EM Estruturas	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “QUEM SOMOS A MGCALC Engenharia e Consultoria em Estruturas é uma empresa focada em serviços de engenharia para estruturas metálicas e mistas de pequeno, médio e grande porte…” Source: RevenueBase Database · checked Sep 17, 2026
15	Intelligrid	Partial evidence	Curitiba, BrazilHQ checked Sep 17, 2026	1-10	10 contacts →
	Partial evidence “Fundada em 1994, a IntelliGrid é uma empresa de engenharia focada no desenvolvimento e execução de empreendimentos em regime EPC (Engineering, Procurement, and Construction) e…” Source: RevenueBase Database · checked Sep 17, 2026
16	Fatorial Engenharia	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “Empresa criada visando a entrega de uma solução diferenciada em projetos de Construção Civil para o mercado.” Source: RevenueBase Database · checked Sep 17, 2026
17	Open Solutions Engenharia & Consultoria	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	1-10	8 contacts →
	Indirect evidence “OPEN SOLUTIONS: Soluções em Engenharia & Consultoria desde 2016.” Source: RevenueBase Database · checked Sep 17, 2026
18	Rinaldi Engenharia Civil	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Localizada em Curitiba-PR, é especializada na prestação de serviços na área da construção civil industrial e comercial.” Source: RevenueBase Database · checked Sep 17, 2026
19	Syncron Engenharia E Gerenciamento Ltda	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	11-50	4 contacts →
	Indirect evidence “Com especialização em Desenvolvimento de Projetos, a Syncron se destaca desde 2012 como fornecedora de serviços e soluções de engenharia para uma ampla gama de segmentos…” Source: RevenueBase Database · checked Sep 17, 2026
20	Desimec	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “A Desimec foi idealizada em 2008 e iniciou efetivamente suas atividades no ano de 2015 com o propósito de trazer soluções inovadoras às necessidades de seus clientes.” Source: RevenueBase Database · checked Sep 17, 2026
21	JMC Engenharia	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	11-50	3 contacts →
	Indirect evidence “Uma empresa de Engenharia, que atua no mercado da Construção Civil com o objetivo de tornar possível o sonho de seus clientes.” Source: RevenueBase Database · checked Sep 17, 2026
22	Tresso Engenharia	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “A Tresso Engenharia foi fundada para desempenhar serviços de excelência em engenharia às empresas que buscam soluções eficazes, robustas e inteligentes.” Source: RevenueBase Database · checked Sep 17, 2026
23	3rk Engenharia Ltda	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence “A 3RK Engenharia atua no desenvolvimento de projetos de engenharia e consultoria técnica, oferecendo análises, laudos, estudos de viabilidade e soluções sob medida para cada…” Source: RevenueBase Database · checked Sep 17, 2026
24	Laplace Automação Industrial Ltda	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	201-500	1 contacts →
	Indirect evidence “A LAPLACE Automação Industrial Ltda.” Source: RevenueBase Database · checked Sep 17, 2026
25	Envicon Química & Meio Ambiente	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	1-10	1 contacts →
	Indirect evidence “Vivemos em mundo cada vez mais competitivo e globalizado, onde são apresentados novos desafios e oportunidades a cada dia.” Source: RevenueBase Database · checked Sep 17, 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: refinery engineering firms. 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 refinery engineering firms.
Partial evidence: Its own public description names part of refinery engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name refinery engineering firms. 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 97 refinery engineering firms based in Curitiba, Brazil

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Refinery engineering firms based in Curitiba, Brazil at a glance

As of Sep 17, 2026

10.1%Verified-email coverage

14.9Average contacts per company

1-10Median size (employees)

382.5%Largest-city concentration · Sao Paulo

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole Brazil list rather than for Curitiba, so it is reported there. Company counts and contact totals on this page are exact for Curitiba, over 97 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 refinery engineering firms, 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 Curitiba, Brazil whose own description of what they do matches “refinery engineering firms”. 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 refinery engineering firms), 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 refinery engineering firms, and records with no verified work email. Companies headquartered outside Curitiba 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, 146 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 17, 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.

Refinery engineering firms by metro in Brazil

Refinery engineering firms in Sao Paulo371
Refinery engineering firms in Rio De Janeiro175
Refinery engineering firms in Belo Horizonte166
Refinery engineering firms in Curitiba97
Refinery engineering firms in Porto Alegre69
Refinery engineering firms in Campinas58
Refinery engineering firms in Salvador57
Refinery engineering firms in Goiania49
Refinery engineering firms in Recife45
Refinery engineering firms in Sao Jose Dos Campos44
Refinery engineering firms in Fortaleza33
Refinery engineering firms in Sorocaba33
Refinery engineering firms in Joinville32
Refinery engineering firms in Vitoria29
Refinery engineering firms in Florianopolis26
Refinery engineering firms in Mogi Das Cruzes25

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 refinery engineering firms, 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 refinery engineering firms are there based in Curitiba, Brazil?

RevenueBase identified 97 refinery engineering firms headquartered in Curitiba, Brazil 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?

ACV Tecline Engenharia Ltda, headquartered in Curitiba, tops this list with the largest team on record.

Which city has the most refinery engineering firms?

Sao Paulo leads with 371 headquartered companies, followed by Rio De Janeiro (175) and Belo Horizonte (166).

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 146 verified decision-maker contacts tracked across these 97 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 17, 2026.

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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.