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Temelion is a technology company.
Temelion offers an AI-powered platform designed to automate and optimize pre-construction workflows for building design engineers. Its core product streamlines complex technical documentation and deliverables, enhancing precision, ensuring compliance, and accelerating project timelines. The platform provides key capabilities such as rapid Go/No Go assessments, automated technical proposal generation, precise contractor bid comparisons, and the automation of electrical engineering deliverables, significantly reducing manual effort and potential errors.
The company was founded in 2025 by Jérôme Joaug, Rodolphe Héliot, and Sébastien Gilles. These serial entrepreneurs identified a critical need within the construction industry for a solution to combat the inefficiencies inherent in pre-construction phases, particularly the extensive time spent on administrative tasks and the challenges of synchronizing data across various engineering specialties. Their collective experience underscored the potential for AI to transform these bottleneck-ridden processes.
Temelion primarily serves building design engineers and engineering teams, enabling them to focus on high-value engineering tasks rather than repetitive paperwork. The company's vision is to free engineers from administrative burdens, allowing them to concentrate on design and technical challenges. It aims to empower engineering teams to deliver compliant, high-quality projects more efficiently, fostering quicker decision-making and improved overall project outcomes.
Temelion has raised $4.0M across 1 funding round.
Temelion has raised $4.0M in total across 1 funding round.
Temelion has raised $4.0M in total across 1 funding round.
Temelion's investors include 360 Capital Partners, Canaan Partners Israel, OurCrowd, Chaim Meir Tessler, kobi marenko, ISAI, Kima Ventures, SE Ventures.
# Temelion: AI-Powered Pre-Construction Engineering
Temelion is an AI platform that automates repetitive workflows for building design engineers, enabling them to generate technical documentation, manage project requirements, and streamline pre-construction deliverables with greater speed and accuracy[1][2]. The company serves engineering consultancies and design firms during the pre-construction phase, addressing a critical pain point: engineers spend excessive hours on document-heavy, repetitive tasks that distract from higher-value design work[2].
Founded in 2025 by Jérôme Joaug (Chief Product Officer), Rodolphe Héliot (CEO), and Sébastien Gilles (Chief Technology Officer), Temelion closed a €3.2 million seed round in September 2025 led by 360Capital, with participation from ISAI Build Venture, SE Ventures, and Kima Ventures[2]. The company is based at Station F in Paris with an additional office in Toulouse[1]. The founding team comprises serial entrepreneurs with decades of experience in high-growth companies and multiple successful exits, bringing deep expertise in both technology and the built environment[1][2].
Temelion operates at the intersection of construction technology (ConTech) and enterprise AI automation, riding two powerful trends: the digitalization of traditionally analog construction processes and the deployment of AI to eliminate knowledge-worker drudgery. The timing is particularly relevant as engineering firms face labor shortages and pressure to deliver projects faster while maintaining quality—problems that automation directly addresses[2].
The company's focus on pre-construction workflows targets a less-saturated segment of ConTech compared to on-site project management tools, positioning it as a specialized solution for a specific but high-value pain point. By automating the upstream engineering phase, Temelion influences how quickly and accurately projects move from design to execution, with downstream implications for construction timelines and costs[1][2].
Temelion is well-positioned to capture market share among French engineering consultancies in the near term, with the €3.2 million seed round explicitly earmarked for commercial expansion in France and product refinement across trade-specific workflows[2]. The company's next phase will likely depend on successful integrations with industry-standard tools and demonstrated ROI metrics that resonate with design firm economics.
The broader opportunity extends beyond France: as engineering firms globally grapple with the same document-heavy bottlenecks, Temelion's playbook could scale internationally. Success will hinge on whether the platform can maintain accuracy and compliance—critical in regulated construction environments—while genuinely freeing engineers from repetitive work. If executed well, Temelion could become a foundational tool in the pre-construction phase, much as project management software became essential on-site.
Temelion has raised $4.0M across 1 funding round. Most recently, it raised $4.0M Seed in September 2025.
| Date | Round | Lead Investors | Other Investors |
|---|---|---|---|
| Sep 1, 2025 | $4.0M Seed | 360 Capital Partners | Canaan Partners Israel, OurCrowd, Chaim Meir Tessler, kobi marenko, ISAI, Kima Ventures, SE Ventures |