feat: add salary insights

JobTrackerApi.Tests/AnalyticsSalaryTests.cs

@@ -0,0 +1,31 @@
+using JobTrackerApi.Models;
+using JobTrackerApi.Services;
+using JobTrackerApi.Tests.TestSupport;
+using Xunit;
+
+namespace JobTrackerApi.Tests;
+
+public sealed class AnalyticsSalaryTests
+{
+    [Fact]
+    public async Task Salary_insights_keep_currency_and_period_groups_separate()
+    {
+        await using var db = TestHostFactory.CreateInMemoryDb("user-1");
+        var company = new Company { Name = "Acme", OwnerUserId = "user-1" };
+        db.Companies.Add(company);
+        db.JobApplications.AddRange(
+            new JobApplication { OwnerUserId = "user-1", Company = company, JobTitle = "A", Status = "Applied", SalaryMin = 600_000, SalaryMax = 800_000, SalaryCurrency = "NOK", SalaryPeriod = "year" },
+            new JobApplication { OwnerUserId = "user-1", Company = company, JobTitle = "B", Status = "Applied", SalaryMin = 700_000, SalaryMax = 900_000, SalaryCurrency = "NOK", SalaryPeriod = "year" },
+            new JobApplication { OwnerUserId = "user-1", Company = company, JobTitle = "C", Status = "Applied", SalaryMin = 50, SalaryMax = 70, SalaryCurrency = "EUR", SalaryPeriod = "hour" });
+        await db.SaveChangesAsync();
+
+        var result = await new AnalyticsService(db).GetAnalyticsOverviewAsync(default);
+
+        Assert.Equal(2, result.SalaryInsights.Count);
+        var nok = Assert.Single(result.SalaryInsights, x => x.Currency == "NOK" && x.Period == "year");
+        Assert.Equal(2, nok.Count);
+        Assert.Equal(600_000, nok.Minimum);
+        Assert.Equal(900_000, nok.Maximum);
+        Assert.Equal(750_000, nok.AverageMidpoint);
+    }
+}

JobTrackerApi/Services/AnalyticsService.cs

@@ -85,7 +85,11 @@ namespace JobTrackerApi.Services
                     j.SavedAt,
                     j.CompanyId,
                     CompanyName = j.Company.Name,
-                    CompanySource = j.Company.Source
+                    CompanySource = j.Company.Source,
+                    j.SalaryMin,
+                    j.SalaryMax,
+                    j.SalaryCurrency,
+                    j.SalaryPeriod
                 })
                 .ToListAsync(cancellationToken);
 
@@ -176,6 +180,23 @@ namespace JobTrackerApi.Services
                 .Select(p => new StageDurationDto(p.Stage, p.MedianDays, p.Count))
                 .ToList();
 
+            var salaryInsights = activeJobs
+                .Where(j => (j.SalaryMin is not null || j.SalaryMax is not null)
+                    && !string.IsNullOrWhiteSpace(j.SalaryCurrency)
+                    && !string.IsNullOrWhiteSpace(j.SalaryPeriod))
+                .GroupBy(j => new { Currency = j.SalaryCurrency!.ToUpperInvariant(), Period = j.SalaryPeriod!.ToLowerInvariant() })
+                .Select(g => new SalaryInsightDto(
+                    g.Key.Currency,
+                    g.Key.Period,
+                    g.Count(),
+                    g.Min(j => j.SalaryMin ?? j.SalaryMax!.Value),
+                    g.Max(j => j.SalaryMax ?? j.SalaryMin!.Value),
+                    Math.Round(g.Average(j => ((j.SalaryMin ?? j.SalaryMax!.Value) + (j.SalaryMax ?? j.SalaryMin!.Value)) / 2m), 0)))
+                .OrderByDescending(x => x.Count)
+                .ThenBy(x => x.Currency)
+                .ThenBy(x => x.Period)
+                .ToList();
+
             return new AnalyticsOverviewDto(
                 Funnel: funnel,
                 ResponseRateBySource: responseRateBySource,
@@ -183,7 +204,8 @@ namespace JobTrackerApi.Services
                 MedianDaysToFirstResponse: medianDays,
                 TotalResponses: activeJobs.Count(j => j.ResponseReceived || j.ResponseDate is not null),
                 TotalActive: activeJobs.Count,
-                TimeInStage: timeInStage
+                TimeInStage: timeInStage,
+                SalaryInsights: salaryInsights
             );
         }
     }

Models/AnalyticsDtos.cs

@@ -21,6 +21,8 @@ namespace JobTrackerApi.Models
 
     public sealed record StageDurationDto(string Stage, double MedianDays, int Count);
 
+    public sealed record SalaryInsightDto(string Currency, string Period, int Count, decimal Minimum, decimal Maximum, decimal AverageMidpoint);
+
     public sealed record AnalyticsOverviewDto(
         List<FunnelStagePoint> Funnel,
         List<ResponseRatePoint> ResponseRateBySource,
@@ -28,6 +30,7 @@ namespace JobTrackerApi.Models
         double? MedianDaysToFirstResponse,
         int TotalResponses,
         int TotalActive,
-        List<StageDurationDto> TimeInStage
+        List<StageDurationDto> TimeInStage,
+        List<SalaryInsightDto> SalaryInsights
     );
 }

docs/product/roadmap.md

@@ -309,7 +309,7 @@ Features:
 Possible future features:
 
 - Interview preparation.
-- Salary insights.
+- Salary insights. ✅ Dashboard groups comparable tracked ranges by currency and pay period (2026-07-31).
 - Career analytics.
 - Skill recommendations.
 - Learning paths.

job-tracker-ui/src/components/DashboardView.tsx

@@ -50,6 +50,7 @@ type OverviewAnalytics = {
   totalResponses: number;
   totalActive: number;
   timeInStage?: { stage: string; medianDays: number; count: number }[];
+  salaryInsights?: { currency: string; period: string; count: number; minimum: number; maximum: number; averageMidpoint: number }[];
 };
 type TagTrendResponse = { months: string[]; series: { tag: string; counts: number[] }[] };
 
@@ -528,6 +529,28 @@ export default function DashboardView() {
         ) : null}
       </Box>
 
+
+      {(overview?.salaryInsights?.length ?? 0) > 0 ? (
+        <Box sx={{ mt: 2 }}>
+          <SectionCard>
+            <Typography variant="h6">Salary insights</Typography>
+            <Typography variant="body2" color="text.secondary" sx={{ mt: 0.5, mb: 1.5 }}>Comparable ranges from jobs in your tracker. Currencies and pay periods stay separate.</Typography>
+            <Box sx={{ display: "grid", gridTemplateColumns: { xs: "1fr", md: "repeat(3, 1fr)" }, gap: 1.5 }}>
+              {overview!.salaryInsights!.map((item) => {
+                const money = new Intl.NumberFormat(undefined, { style: "currency", currency: item.currency, maximumFractionDigits: 0 });
+                return (
+                  <Box key={item.currency + item.period} sx={{ p: 1.5, borderRadius: 3, backgroundColor: alpha(theme.palette.primary.main, 0.05) }}>
+                    <Typography variant="caption" color="text.secondary">{item.currency} · per {item.period} · {item.count} {item.count === 1 ? "job" : "jobs"}</Typography>
+                    <Typography variant="h6" sx={{ mt: 0.5 }}>{money.format(item.averageMidpoint)}</Typography>
+                    <Typography variant="body2" color="text.secondary">Range {money.format(item.minimum)}–{money.format(item.maximum)}</Typography>
+                  </Box>
+                );
+              })}
+            </Box>
+          </SectionCard>
+        </Box>
+      ) : null}
+
       <Box sx={{ display: "grid", gridTemplateColumns: { xs: "1fr", xl: "1.15fr 0.85fr" }, gap: 2, mt: 2 }}>
         {!summaryResource.loading && !summaryResource.error ? (
         <SectionCard>