N-Sea
As a Senior Tender Manager at N-Sea, you play a pivotal role in securing new business and shaping the commercial success of our projects across Survey, UXO and IRM service lines. You lead the end-to-end tendering process, from opportunity evaluation through to submission and negotiation, ensuring high-quality, competitive and risk-balanced proposals.
You act as the central coordinator between commercial, operational and technical teams, driving alignment and ensuring that client requirements are translated into executable, winning solutions.
Key responsibilities
Qualifications
Requirements
What we offer
About N-Sea
N-Sea is an end-to-end subsea services provider. With a fleet of 14 multipurpose vessels and a range of in-house systems and equipment, N-Sea delivers smart, fit-for-purpose solutions for subsea infrastructure projects in every stage of the offshore asset life cycle for customers in the international offshore energy industry. Our bespoke solutions focus on specific subsea capabilities, such as survey, UXO ID & clearance, cable repair & installation, or IRM, construction & decommissioning.
With the support of an experienced, multidiscipline offshore operations team, we integrate these bespoke capabilities into a single project, delivering a smart, fit-for-purpose, safe and sustainable solution that improves the efficiency of subsea projects and reduces projects risks for our customers.
N-Sea Group is a privately owned company headquartered in the Netherlands, with more than 500 people working offshore and onshore, onboard vessels and in facilities across Europe and the Middle East, and a revenue of more than €200M in 2025.
N-Sea. Smart Subsea Solutions.
We are a recognised IND sponsor and can support visa applications. We welcome applications from candidates of all backgrounds.

N-Sea is een geïntegreerde leverancier van totale subsea-oplossingen op het gebied van Survey, UXO-identificatie en -verwijdering (munitie), IRM & Constructie, en reparatie en installatie van onderzeese kabels. Wij leveren effectieve en kostenefficiënte oplossingen voor subsea-infrastructuren en bedrijfsmiddelen die voldoen aan de behoeften van de internationale olie-, gas- en duurzame energiesector, met oog voor een veilige omgeving.
Aantal medewerkers: Meer dan 500 professionals verspreid over internationale locaties.
Sectoren: Onderzeese surveys, identificatie en verwijdering van onontplofte munitie (UXO), inspectie, reparatie en onderhoud (IRM), reparatie en installatie van onderzeese kabels en datamanagement.
Gewenst opleidingsniveau: HBO voor technische/operationele functies; HBO/Bachelor of hoger voor functies in engineering, recht en management.
Gewenste opleiding: Hydrografische landmeting, geotechniek, werktuigbouwkunde/elektrotechniek, rechten of financiën/salarisadministratie.
Carrièreniveau: Alle niveaus, inclusief stagiairs, projectingenieurs, senior specialisten en medewerkers op het hoofdkantoor.