At BOLD, we design and build the next generation of high-performance battery systems for the world’s most demanding industries — from Formula 1 and hypercars to aerospace, marine and defense. Our mission: to deliver energy systems where every millisecond and every degree matter.As a Senior Composite Design Engineer - F1, you will play a key role in the design and development of composites laminates, and structures. You should possess an understanding of the materials and processes utilized in high-end composite structures applications (Prepreg, cores, tooling, and trimming methodologies).What You Will DoAnalysis and verification of initial specifications. Statements of works – Drawing and layup table specificationExperienced in design and developing of composites laminates and structures. Full understanding of material and processes used in high end applications composites structures (Prepreg, cores, mouldings and trimming methodologies)Experience in the design and manufacturing process of composites tooling, patterns and CFRP moulds for autoclave and OoA processesExperience designing of composites components and tooling using CATIA V5 or Siemens NX.Good work practice of surfaces and solids.Broad understanding of CATIA/NX functions and the structuring of Generator files, publications and save management structure for large master product filesExcellent understanding or parametric modelling and stable tree structures required to support agile geometry developmentExperience in drafting of drawings using CATIA V5 (V6)/Siemens NX for composites component, tooling, jigs, and fixtures to support manufacturing requirements. Understanding of the applications of GD&T and process limitations of composites materials when tolerancing and defining geometriesExcellent time management and leadership skills,



able to support Jr designers with technical queries in both materials and CATIA/NX structures for parametric modellingAble to work to a project plan and manage technical requirements vs workload to a schedule, maintain active communication in an agile environment of adherence to project plans and set targets. Leveraging on cloud base collaborative platforms such as MS Office suite and Cloud project management toolsMaintain an up-to‑date technical awareness of the business requirementsWork closely with the technical leads and Project management office to coordinate and effectively plan and program the designs to ensure the assembly team have enough time to meet key dates and deadlinesMinimum RequirementsWhat You Bring+5 years of experience working as a Composite Design EngineerEV/Motorsport industry experienceMechanical Engineering Degree or equivalent R&D design experienceExcellent knowledge and experience of Catia v5/3DX and/or Siemens NXStructural Design experienceIn‑depth knowledge of composite manufacturing processes, especially for prepreg components, including tooling, inserts, cores, and all associated processesProficient EnglishDesirable SkillsFEA and/or CFD experienceVast knowledge of materials used in motorsport and aerospace applications (metallic alloys/technical polymers/composites)Why Join BOLDHigh‑growth, multicultural environment:



Be part of a fast‑scaling company driving innovation in advanced electrification.Competitive CompensationsLife InsurancePrivate health insurance - Reduced cost for employees and family.Subsidised canteenFlexible work schedule and up to 5 remote days/month.Monthly Town HallAbout BOLDAt Bold, we’re a diverse, international team with backgrounds in automotive, motorsport, aerospace, defense and aviation.We combine creativity and engineering rigour to deliver high‑performance, safe and sustainable energy systems for the world’s most demanding applications.We Operate Through Two DivisionsBOLD Applied Engineering (BAE )– Provides top‑tier professional engineering services, primarily to elite motorsport teams (especially Formula 1), in areas such as composite design, mechanical engineering, aerodynamics and systems integration. This expertise is transferred directly to complex defence sector programmes.BOLD Technology (BT) – Designs, develops and manufactures high‑voltage battery systems and electric propulsion system components for defence applications, tactical vehicles, military platforms, aviation and advanced mobility. BOLD is an international benchmark in defence electrification, supplying systems to United States Army programmes and collaborating with leading defence primes in the US and Europe.Inclusion & DiversityBOLD is an equal opportunity employer. We foster a culture where ideas thrive based on merit and competence, regardless of age, disability, race, religion, gender, sexual orientation, or family circumstances.Privacy PolicyBOLD respects your privacy and is committed to protecting the personal information you share with us, please refer to Bold’s Privacy Policy for more details.#J-18808-Ljbffr

📌 Senior Composite Design Engineer (Madrid)
🏢 Bold
📍 Madrid