Yooshin Engineering

Founded in 1966, Yooshin is a comprehensive construction engineering firm that became the first civil engineering company to list on KOSDAQ in 2002.

Its core business spans feasibility studies, design, and construction management services across the full range of SOC sectors, including roads/airports, railways/structures, urban planning, construction supervision, and other design services, with design and supervision services historically accounting for a substantial share of revenue based on past disclosed segment data.

In 2025 the company completed a small-scale merger with the unlisted CE-Tech, expanding into the EPC (engineering, procurement, construction) segment; CE-Tech had previously specialized in steel structure fabrication and construction of incineration and utility plants.

Through this merger, Yooshin is pursuing a transition from a design/supervision-focused business into a comprehensive EPC contractor covering the construction of power and incineration plants as well.

Overseas, the company has carried out projects across Asia, the Middle East, and Africa, including transport network design in Vietnam, an arterial road master plan in Myanmar, and bridge projects in the Philippines.

Domestic competitors include large integrated engineering firms such as Dohwa Engineering, Korea Engineering Consultants Corp, Saman Corporation, and Kunhwa Engineering, with Yooshin generally classified as a mid-tier engineering firm relative to larger contractors in terms of capital scale.

The company was the first in its industry to obtain KEPIC (Korea Electric Power Industry Code) certification in 2010, and it continues to leverage this credential to pursue expansion into nuclear and plant-related business.

Amid stagnant growth in the domestic SOC industry, the company is pursuing a strategy of diversifying its technology portfolio through entry into new fields such as nuclear power, waste incineration, and renewable energy.

Consolidated revenue reached KRW 385.5 billion in 2025, up 13.5% from KRW 339.6 billion in 2024, continuing a growth trend from KRW 341.1 billion in 2023 and KRW 304.0 billion in 2022.

However, operating profit of KRW 9.2 billion in 2025, while up from KRW 5.8 billion in 2024, fell well short of the KRW 18.3 billion and KRW 20.9 billion recorded in 2023 and 2022 respectively, with the operating margin declining sharply from 6.9% in 2022 and 5.4% in 2023 to just 1.7% in 2024 and 2.4% in 2025.

The net profit trajectory is even more dramatic: net profit attributable to owners was relatively stable at KRW 18.3 billion in 2022 and KRW 20.1 billion in 2023, surged to KRW 24.4 billion in 2024, then plunged to KRW 10.5 billion in 2025.

The unusually high 2024 net profit relative to operating profit suggests a one-off factor was involved.

On a quarterly basis, operating profit improved through the second half of 2025 -- KRW 1.75 billion in Q2, KRW 1.38 billion in Q3, and KRW 4.50 billion in Q4 -- before the company swung to an operating loss of KRW 0.76 billion in Q1 2026, with net profit shrinking to just KRW 0.37 billion.

Operating profit then rebounded sharply to KRW 6.79 billion in Q2 2026, with net profit of KRW 5.12 billion, underscoring pronounced quarter-to-quarter volatility.

Cash flow also improved substantially, with operating cash flow reaching KRW 39.0 billion in 2025 versus just KRW 0.16 billion in 2024, though this compares to KRW 3.2 billion in 2022 and KRW 31.9 billion in 2023, indicating significant year-to-year variability.

The debt ratio fell from 98.9% in 2022 to 86.6% in 2023, then rose again to 98.7% in 2024 and 118.7% in 2025, a pattern likely linked to the asset and liability changes associated with the CE-Tech merger.

The domestic construction engineering industry faces persistent challenges from stagnant growth in the SOC sector and a construction-industry structure that remains difficult to shift away from onsite-construction dominance.

The 2026 government SOC budget was finalized at KRW 27.7 trillion, its highest level in four years, with the Ministry of Land, Infrastructure and Transport budget also reaching a record KRW 62.8 trillion.

However, industry observers argue that SOC budget expansion alone is unlikely to drive a broad recovery, noting that the private sector, which accounts for roughly 80% of construction investment, remains in a prolonged slump.

As the construction cost index hits record highs, a widening gap between budgeted and actual construction costs at the time of order placement is increasingly cited as a factor behind rising unexecuted budgets.

In this environment, the shrinking share of large-scale civil engineering projects relative to growing maintenance and safety-related budgets is prompting design/supervision-focused firms to adapt their business structures.

Some in the industry argue that Korea's construction sector needs to shift from a construction-centric to an engineering-centric structure, a shift that could create a more favorable environment for engineering specialists like Yooshin while also intensifying competition.

New infrastructure sectors such as nuclear power, renewable energy, and data centers are cited as potential growth drivers that could offset SOC-sector weakness, though these areas also feature intense competition between large integrated engineering firms and specialized EPC contractors.

The company appears to be sustaining revenue growth on the back of the CE-Tech merger and expanding overseas business, while facing profitability challenges from rising personnel and other costs.

The SOC budget expansion reflected in the 2026 government budget and plans for new SOC project awards could provide a favorable environment for Yooshin's design and supervision order base.

Having already secured KEPIC certification for nuclear-sector entry, the company continues to pursue a strategy of expanding its technology platform into new areas including waste incineration, energy, and plant engineering.

With a ranking among Engineering News-Record's global design firms and a portfolio of new technologies and patents, further attempts to expand into higher-value nuclear, plant, and renewable energy business are expected to continue.

However, as the Q1 2026 operating loss illustrated, the cost structure during the early phase of EPC expansion may remain unstable, making it necessary to monitor upcoming quarterly results to assess whether the EPC business achieves earnings stability.

Overseas, the company continues to expand contracted service projects across Asia, the Middle East, and Africa, leaving regional order performance as an ongoing variable for future results.

Amid continued construction cost inflation and private-sector weakness, Yooshin's results, given its relatively high exposure to public-sector orders, are also expected to be influenced by the pace of government SOC budget execution.