diff --git a/api/nexus/client/opportunities.ts b/api/nexus/client/opportunities.ts
new file mode 100644
index 00000000..3b1d91bd
--- /dev/null
+++ b/api/nexus/client/opportunities.ts
@@ -0,0 +1,112 @@
+import type { VercelRequest, VercelResponse } from "@vercel/node";
+import { getAdminClient } from "../../_supabase";
+
+export default async function handler(req: VercelRequest, res: VercelResponse) {
+  const admin = getAdminClient();
+
+  // Only authenticated requests
+  const authHeader = req.headers.authorization;
+  if (!authHeader) {
+    return res.status(401).json({ error: "Unauthorized" });
+  }
+
+  const token = authHeader.replace("Bearer ", "");
+  const { data: { user }, error: authError } = await admin.auth.getUser(token);
+
+  if (authError || !user) {
+    return res.status(401).json({ error: "Invalid token" });
+  }
+
+  try {
+    if (req.method === "GET") {
+      // List client's opportunities
+      const status = req.query.status as string | undefined;
+      const limit = parseInt((req.query.limit as string) || "50", 10);
+      const offset = parseInt((req.query.offset as string) || "0", 10);
+
+      let query = admin
+        .from("nexus_opportunities")
+        .select(`
+          *,
+          applications:nexus_applications(id, status, creator_id)
+        `)
+        .eq("posted_by", user.id)
+        .order("created_at", { ascending: false });
+
+      if (status) {
+        query = query.eq("status", status);
+      }
+
+      const { data: opportunities, error: oppError } = await query.range(
+        offset,
+        offset + limit - 1
+      );
+
+      if (oppError) {
+        return res.status(500).json({ error: oppError.message });
+      }
+
+      return res.status(200).json({
+        opportunities: opportunities || [],
+        limit,
+        offset,
+      });
+    }
+
+    if (req.method === "POST") {
+      // Create new opportunity
+      const {
+        title,
+        description,
+        category,
+        required_skills,
+        budget_type,
+        budget_min,
+        budget_max,
+        timeline_type,
+        duration_weeks,
+        location_requirement,
+        required_experience,
+        company_name,
+      } = req.body;
+
+      if (!title || !description || !category || !budget_type) {
+        return res.status(400).json({
+          error: "Missing required fields: title, description, category, budget_type",
+        });
+      }
+
+      const { data: opportunity, error: createError } = await admin
+        .from("nexus_opportunities")
+        .insert({
+          posted_by: user.id,
+          title,
+          description,
+          category,
+          required_skills: Array.isArray(required_skills) ? required_skills : [],
+          budget_type,
+          budget_min: budget_min || null,
+          budget_max: budget_max || null,
+          timeline_type: timeline_type || "flexible",
+          duration_weeks: duration_weeks || null,
+          location_requirement: location_requirement || "remote",
+          required_experience: required_experience || "any",
+          company_name: company_name || null,
+          status: "open",
+          published_at: new Date().toISOString(),
+        })
+        .select()
+        .single();
+
+      if (createError) {
+        return res.status(500).json({ error: createError.message });
+      }
+
+      return res.status(201).json(opportunity);
+    }
+
+    return res.status(405).json({ error: "Method not allowed" });
+  } catch (error: any) {
+    return res.status(500).json({ error: error?.message || "Server error" });
+  }
+}