Head of Business Unit: Cables & Wires

About sun.store 

• sun.store is the biggest B2B marketplace for solar and energy storage components in Europe — ranked #1 fastest-growing startup in Europe by Sifted's Future 50 in 2024. 

• Launched in October 2023, we already process €100m+ GMV annually, serve 45,000+ B2B users across 40+ countries, operate as a truly pan-European platform (90% of transactions cross borders), and are backed by leading VC investors. 

• The European wire and cable market is projected to grow from €37 billion in 2025 to over €56 billion by 2033, driven by solar PV deployment, EV charging rollout, and grid modernisation. The solar cable segment alone is growing at 9–11% CAGR through 2030. This is a massive, infrastructure-grade opportunity — and we are building the B2B marketplace to capture it. 

 

Responsibilities 

• Business Unit P&L: Own the GMV, revenue, and margin targets for the Cables & Wires BU. Define success metrics, build the operational model, and be accountable for results. 

• Supplier Development: Identify, recruit, and onboard key cable manufacturers, wholesalers, and distributors across Europe. Build the assortment from the ground up. 

• Pricing & Assortment Strategy: Develop sharp, data-driven pricing frameworks. Monitor copper and aluminium price fluctuations, competitor dynamics, and buyer demand signals to maintain competitive positioning without sacrificing margin. 

• Demand Activation: Drive buyer acquisition and conversion in the cables category. Design promotions, bundles, and content strategies that help installers and wholesalers make fast purchasing decisions. 

• Operational Excellence: Coordinate with Logistics, Product, and Operations to ensure smooth fulfillment, accurate listings, and reliable cross-border delivery for high-volume, heavy cable orders. 

• Market Intelligence: Monitor European cables market dynamics — pricing trends, new certifications, regulation changes— and translate insights into category strategy. 

• AI-First Operations: Leverage automation, pricing intelligence tools, and AI-assisted workflows to manage a high-SKU, commodity-intensive category at scale without proportional headcount growth. 

 

Requirements 

• 5+ years of experience in category management, commercial development, or business development. 

• Minimum 3 years of experience in the cables&wires category, proven with strong network of contacts. 

• Proven track record of building or scaling a product category or business unit from scratch — you know what it takes to go from zero to revenue. 

• Strong supplier relationship skills — comfortable negotiating commercial terms, managing partnerships, and building long-term agreements with manufacturers and distributors. 

• Data-driven approach — you use pricing, conversion, margin, and inventory data to guide sourcing and growth decisions. 

• Readiness to work in a hybrid model from our office in Warsaw, Poland. 

• Fluency in English (C1+) — the working language of the company. 

 

Candidate Profile & Mindset 

• Category specialist meets platform builder: You understand the cables business — the products, the supply chain, the buyers. And you are excited about building a digital marketplace around it. 

• Startup spirit: Readiness to thrive in a dynamic environment and build processes from scratch. We look for someone who wants to test and apply new approaches every day — this mindset matters the most. 

• AI-First operator: We are a lean organisation that scales through automation, not headcount. Candidates motivated primarily by managing large teams are not the right fit. We need someone who builds high-output, technology-driven systems. 

• Ownership mindset: This is your business unit. You define the strategy, make the calls, and are fully accountable for the results. We offer autonomy in exchange for ownership.